HEADER    HYDROLASE                               26-JUN-20   6XKF              
TITLE     THE CRYSTAL STRUCTURE OF 3CL MAINPRO OF SARS-COV-2 WITH OXIDIZED      
TITLE    2 CYS145 (SULFENIC ACID CYSTEINE).                                     
COMPND    MOL_ID: 1;                                                            
COMPND   2 MOLECULE: 3C-LIKE PROTEINASE;                                        
COMPND   3 CHAIN: A, B;                                                         
COMPND   4 EC: 3.4.22.69;                                                       
COMPND   5 ENGINEERED: YES                                                      
SOURCE    MOL_ID: 1;                                                            
SOURCE   2 ORGANISM_SCIENTIFIC: SEVERE ACUTE RESPIRATORY SYNDROME CORONAVIRUS   
SOURCE   3 2;                                                                   
SOURCE   4 ORGANISM_COMMON: 2019-NCOV;                                          
SOURCE   5 ORGANISM_TAXID: 2697049;                                             
SOURCE   6 GENE: REP, 1A-1B;                                                    
SOURCE   7 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                                 
SOURCE   8 EXPRESSION_SYSTEM_TAXID: 562                                         
KEYWDS    SARS-COV-2, 3CL MAIN PROTEASE, STRUCTURAL GENOMICS, CENTER FOR        
KEYWDS   2 STRUCTURAL GENOMICS OF INFECTIOUS DISEASES, CSGID, HYDROLASE         
EXPDTA    X-RAY DIFFRACTION                                                     
AUTHOR    K.TAN,N.I.MALTSEVA,L.F.WELK,R.P.JEDRZEJCZAK,L.COATES,A.Y.KOVALEVSKYI, 
AUTHOR   2 A.JOACHIMIAK,CENTER FOR STRUCTURAL GENOMICS OF INFECTIOUS DISEASES   
AUTHOR   3 (CSGID)                                                              
REVDAT   2   18-OCT-23 6XKF    1       REMARK                                   
REVDAT   1   08-JUL-20 6XKF    0                                                
JRNL        AUTH   K.TAN,N.I.MALTSEVA,L.F.WELK,R.P.JEDRZEJCZAK,L.COATES,        
JRNL        AUTH 2 A.Y.KOVALEVSKYI,A.JOACHIMIAK                                 
JRNL        TITL   THE CRYSTAL STRUCTURE OF 3CL MAINPRO OF SARS-COV-2 WITH      
JRNL        TITL 2 OXIDIZED CYS145 (SULFENIC ACID CYSTEINE).                    
JRNL        REF    TO BE PUBLISHED                                              
JRNL        REFN                                                                
REMARK   2                                                                      
REMARK   2 RESOLUTION.    1.80 ANGSTROMS.                                       
REMARK   3                                                                      
REMARK   3 REFINEMENT.                                                          
REMARK   3   PROGRAM     : PHENIX 1.17.1_3660                                   
REMARK   3   AUTHORS     : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN            
REMARK   3               : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE,           
REMARK   3               : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER,            
REMARK   3               : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY,              
REMARK   3               : REETAL PAI,RANDY READ,JANE RICHARDSON,               
REMARK   3               : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI,           
REMARK   3               : NICHOLAS SAUTER,JACOB SMITH,LAURENT                  
REMARK   3               : STORONI,TOM TERWILLIGER,PETER ZWART                  
REMARK   3                                                                      
REMARK   3    REFINEMENT TARGET : ML                                            
REMARK   3                                                                      
REMARK   3  DATA USED IN REFINEMENT.                                            
REMARK   3   RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80                           
REMARK   3   RESOLUTION RANGE LOW  (ANGSTROMS) : 37.72                          
REMARK   3   MIN(FOBS/SIGMA_FOBS)              : 1.340                          
REMARK   3   COMPLETENESS FOR RANGE        (%) : 95.9                           
REMARK   3   NUMBER OF REFLECTIONS             : 47849                          
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT.                                     
REMARK   3   R VALUE     (WORKING + TEST SET) : 0.192                           
REMARK   3   R VALUE            (WORKING SET) : 0.190                           
REMARK   3   FREE R VALUE                     : 0.239                           
REMARK   3   FREE R VALUE TEST SET SIZE   (%) : 5.090                           
REMARK   3   FREE R VALUE TEST SET COUNT      : 2435                            
REMARK   3                                                                      
REMARK   3  FIT TO DATA USED IN REFINEMENT (IN BINS).                           
REMARK   3   BIN  RESOLUTION RANGE  COMPL.    NWORK NFREE   RWORK  RFREE        
REMARK   3     1 37.7200 -  4.6400    0.91     2639   134  0.1551 0.1707        
REMARK   3     2  4.6400 -  3.6800    0.95     2673   154  0.1396 0.1789        
REMARK   3     3  3.6800 -  3.2200    0.93     2605   114  0.1815 0.2088        
REMARK   3     4  3.2200 -  2.9200    0.96     2722   114  0.1984 0.2634        
REMARK   3     5  2.9200 -  2.7100    0.98     2666   209  0.2023 0.2694        
REMARK   3     6  2.7100 -  2.5500    0.98     2751   154  0.2129 0.2890        
REMARK   3     7  2.5500 -  2.4200    0.96     2665   132  0.2175 0.2588        
REMARK   3     8  2.4200 -  2.3200    0.97     2704   157  0.2110 0.2791        
REMARK   3     9  2.3200 -  2.2300    0.98     2656   187  0.2053 0.3204        
REMARK   3    10  2.2300 -  2.1500    0.98     2723   118  0.2150 0.3081        
REMARK   3    11  2.1500 -  2.0900    0.98     2758   141  0.2266 0.2723        
REMARK   3    12  2.0900 -  2.0300    0.98     2712   143  0.2358 0.3125        
REMARK   3    13  2.0300 -  1.9700    0.98     2740   124  0.2459 0.3557        
REMARK   3    14  1.9700 -  1.9200    0.95     2637   137  0.2504 0.2901        
REMARK   3    15  1.9200 -  1.8800    0.95     2635   149  0.2750 0.3553        
REMARK   3    16  1.8800 -  1.8400    0.96     2631   147  0.2866 0.3027        
REMARK   3    17  1.8400 -  1.8000    0.90     2497   121  0.3077 0.3722        
REMARK   3                                                                      
REMARK   3  BULK SOLVENT MODELLING.                                             
REMARK   3   METHOD USED        : FLAT BULK SOLVENT MODEL                       
REMARK   3   SOLVENT RADIUS     : 1.11                                          
REMARK   3   SHRINKAGE RADIUS   : 0.90                                          
REMARK   3   K_SOL              : NULL                                          
REMARK   3   B_SOL              : NULL                                          
REMARK   3                                                                      
REMARK   3  ERROR ESTIMATES.                                                    
REMARK   3   COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED)     : 0.270            
REMARK   3   PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 29.140           
REMARK   3                                                                      
REMARK   3  B VALUES.                                                           
REMARK   3   FROM WILSON PLOT           (A**2) : NULL                           
REMARK   3   MEAN B VALUE      (OVERALL, A**2) : NULL                           
REMARK   3   OVERALL ANISOTROPIC B VALUE.                                       
REMARK   3    B11 (A**2) : NULL                                                 
REMARK   3    B22 (A**2) : NULL                                                 
REMARK   3    B33 (A**2) : NULL                                                 
REMARK   3    B12 (A**2) : NULL                                                 
REMARK   3    B13 (A**2) : NULL                                                 
REMARK   3    B23 (A**2) : NULL                                                 
REMARK   3                                                                      
REMARK   3  TWINNING INFORMATION.                                               
REMARK   3   FRACTION: NULL                                                     
REMARK   3   OPERATOR: NULL                                                     
REMARK   3                                                                      
REMARK   3  DEVIATIONS FROM IDEAL VALUES.                                       
REMARK   3                 RMSD          COUNT                                  
REMARK   3   BOND      :  0.006           4914                                  
REMARK   3   ANGLE     :  0.864           6683                                  
REMARK   3   CHIRALITY :  0.052            750                                  
REMARK   3   PLANARITY :  0.006            872                                  
REMARK   3   DIHEDRAL  : 18.943           1772                                  
REMARK   3                                                                      
REMARK   3  TLS DETAILS                                                         
REMARK   3   NUMBER OF TLS GROUPS  : 9                                          
REMARK   3   TLS GROUP : 1                                                      
REMARK   3    SELECTION: CHAIN 'A' AND (RESID 1 THROUGH 83 )                    
REMARK   3    ORIGIN FOR THE GROUP (A):   8.9472  12.6436  42.9211              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.2549 T22:   0.2723                                     
REMARK   3      T33:   0.2661 T12:  -0.0235                                     
REMARK   3      T13:   0.0595 T23:   0.0112                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   1.5004 L22:   2.7298                                     
REMARK   3      L33:   2.9428 L12:   0.8796                                     
REMARK   3      L13:   1.6934 L23:   0.9980                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0790 S12:   0.1702 S13:   0.0843                       
REMARK   3      S21:  -0.0845 S22:   0.0617 S23:  -0.2294                       
REMARK   3      S31:  -0.0902 S32:   0.2915 S33:   0.0434                       
REMARK   3   TLS GROUP : 2                                                      
REMARK   3    SELECTION: CHAIN 'A' AND (RESID 84 THROUGH 155 )                  
REMARK   3    ORIGIN FOR THE GROUP (A):  -1.0904   6.3491  40.4787              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.2258 T22:   0.2758                                     
REMARK   3      T33:   0.2692 T12:  -0.0045                                     
REMARK   3      T13:   0.0069 T23:   0.0325                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   1.2796 L22:   5.2236                                     
REMARK   3      L33:   1.9830 L12:   0.5771                                     
REMARK   3      L13:   0.9478 L23:   0.6740                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0003 S12:   0.1174 S13:   0.0107                       
REMARK   3      S21:  -0.1956 S22:   0.0764 S23:   0.3343                       
REMARK   3      S31:   0.0342 S32:  -0.0878 S33:  -0.0892                       
REMARK   3   TLS GROUP : 3                                                      
REMARK   3    SELECTION: CHAIN 'A' AND (RESID 156 THROUGH 213 )                 
REMARK   3    ORIGIN FOR THE GROUP (A):  -0.9362  -4.5433  44.1635              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.2273 T22:   0.2123                                     
REMARK   3      T33:   0.2302 T12:  -0.0042                                     
REMARK   3      T13:   0.0222 T23:   0.0267                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   3.0287 L22:   1.6591                                     
REMARK   3      L33:   1.0340 L12:   1.9788                                     
REMARK   3      L13:   1.4342 L23:   0.9117                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.1295 S12:  -0.0059 S13:  -0.2321                       
REMARK   3      S21:   0.1112 S22:  -0.0414 S23:  -0.2268                       
REMARK   3      S31:   0.0910 S32:  -0.0457 S33:  -0.1002                       
REMARK   3   TLS GROUP : 4                                                      
REMARK   3    SELECTION: CHAIN 'A' AND (RESID 214 THROUGH 237 )                 
REMARK   3    ORIGIN FOR THE GROUP (A): -19.2232 -23.3000  40.0467              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.2447 T22:   0.2652                                     
REMARK   3      T33:   0.3077 T12:  -0.0629                                     
REMARK   3      T13:   0.0259 T23:   0.0203                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   3.5670 L22:   3.7622                                     
REMARK   3      L33:   4.6248 L12:   0.8924                                     
REMARK   3      L13:  -0.5386 L23:   0.7391                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.0583 S12:  -0.0237 S13:  -0.2947                       
REMARK   3      S21:   0.2164 S22:  -0.0065 S23:   0.1778                       
REMARK   3      S31:   0.3381 S32:  -0.4899 S33:  -0.0138                       
REMARK   3   TLS GROUP : 5                                                      
REMARK   3    SELECTION: CHAIN 'A' AND (RESID 238 THROUGH 260 )                 
REMARK   3    ORIGIN FOR THE GROUP (A): -21.1753 -12.6580  43.8185              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.1903 T22:   0.2311                                     
REMARK   3      T33:   0.2573 T12:  -0.0891                                     
REMARK   3      T13:   0.0193 T23:   0.0118                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   7.2241 L22:   7.8433                                     
REMARK   3      L33:   6.0657 L12:  -5.2863                                     
REMARK   3      L13:   0.8834 L23:  -0.3310                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.4866 S12:  -0.3708 S13:   0.3943                       
REMARK   3      S21:   0.1843 S22:   0.3764 S23:   0.1062                       
REMARK   3      S31:  -0.2931 S32:  -0.5288 S33:   0.1009                       
REMARK   3   TLS GROUP : 6                                                      
REMARK   3    SELECTION: CHAIN 'A' AND (RESID 261 THROUGH 306 )                 
REMARK   3    ORIGIN FOR THE GROUP (A): -15.8086 -13.1310  34.4990              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.2498 T22:   0.3160                                     
REMARK   3      T33:   0.1926 T12:  -0.0576                                     
REMARK   3      T13:  -0.0076 T23:   0.0239                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   4.7048 L22:   6.3609                                     
REMARK   3      L33:   3.2791 L12:  -0.7031                                     
REMARK   3      L13:  -0.3782 L23:   1.3685                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0791 S12:   0.1839 S13:   0.2328                       
REMARK   3      S21:  -0.3895 S22:  -0.1771 S23:  -0.0745                       
REMARK   3      S31:  -0.2374 S32:   0.0086 S33:   0.0843                       
REMARK   3   TLS GROUP : 7                                                      
REMARK   3    SELECTION: CHAIN 'B' AND (RESID 1 THROUGH 155 )                   
REMARK   3    ORIGIN FOR THE GROUP (A): -15.3307   9.9957  15.1872              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.3420 T22:   0.2911                                     
REMARK   3      T33:   0.3079 T12:   0.0535                                     
REMARK   3      T13:  -0.0361 T23:  -0.0115                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   1.3886 L22:   2.2188                                     
REMARK   3      L33:   4.2335 L12:   0.4094                                     
REMARK   3      L13:   1.9179 L23:   0.9440                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:  -0.3491 S12:  -0.2832 S13:   0.2691                       
REMARK   3      S21:  -0.1391 S22:   0.0137 S23:   0.2862                       
REMARK   3      S31:  -0.6555 S32:  -0.5450 S33:   0.2477                       
REMARK   3   TLS GROUP : 8                                                      
REMARK   3    SELECTION: CHAIN 'B' AND (RESID 156 THROUGH 214 )                 
REMARK   3    ORIGIN FOR THE GROUP (A):  -9.8830  -3.9389  12.5749              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.2307 T22:   0.2601                                     
REMARK   3      T33:   0.1697 T12:  -0.0109                                     
REMARK   3      T13:   0.0249 T23:   0.0004                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   4.5932 L22:   3.0353                                     
REMARK   3      L33:   1.3637 L12:  -2.0576                                     
REMARK   3      L13:   1.9646 L23:  -0.9261                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.1389 S12:  -0.0609 S13:  -0.1426                       
REMARK   3      S21:  -0.1778 S22:  -0.1003 S23:   0.2684                       
REMARK   3      S31:   0.0651 S32:  -0.0677 S33:  -0.0470                       
REMARK   3   TLS GROUP : 9                                                      
REMARK   3    SELECTION: CHAIN 'B' AND (RESID 215 THROUGH 306 )                 
REMARK   3    ORIGIN FOR THE GROUP (A):   7.0393 -15.3729  17.8992              
REMARK   3    T TENSOR                                                          
REMARK   3      T11:   0.2507 T22:   0.3224                                     
REMARK   3      T33:   0.3300 T12:   0.0411                                     
REMARK   3      T13:  -0.0126 T23:   0.0057                                     
REMARK   3    L TENSOR                                                          
REMARK   3      L11:   7.2017 L22:   4.1719                                     
REMARK   3      L33:   4.7213 L12:   1.2962                                     
REMARK   3      L13:   1.2033 L23:  -0.1090                                     
REMARK   3    S TENSOR                                                          
REMARK   3      S11:   0.0684 S12:  -0.1479 S13:  -0.8353                       
REMARK   3      S21:   0.0174 S22:   0.0347 S23:  -0.1958                       
REMARK   3      S31:   0.3287 S32:   0.2486 S33:  -0.0984                       
REMARK   3                                                                      
REMARK   3  NCS DETAILS                                                         
REMARK   3   NUMBER OF NCS GROUPS : NULL                                        
REMARK   3                                                                      
REMARK   3  OTHER REFINEMENT REMARKS: NULL                                      
REMARK   4                                                                      
REMARK   4 6XKF COMPLIES WITH FORMAT V. 3.30, 13-JUL-11                         
REMARK 100                                                                      
REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 29-JUN-20.                  
REMARK 100 THE DEPOSITION ID IS D_1000250314.                                   
REMARK 200                                                                      
REMARK 200 EXPERIMENTAL DETAILS                                                 
REMARK 200  EXPERIMENT TYPE                : X-RAY DIFFRACTION                  
REMARK 200  DATE OF DATA COLLECTION        : 26-MAY-20                          
REMARK 200  TEMPERATURE           (KELVIN) : 100                                
REMARK 200  PH                             : 8.0                                
REMARK 200  NUMBER OF CRYSTALS USED        : 1                                  
REMARK 200                                                                      
REMARK 200  SYNCHROTRON              (Y/N) : Y                                  
REMARK 200  RADIATION SOURCE               : APS                                
REMARK 200  BEAMLINE                       : 19-ID                              
REMARK 200  X-RAY GENERATOR MODEL          : NULL                               
REMARK 200  MONOCHROMATIC OR LAUE    (M/L) : M                                  
REMARK 200  WAVELENGTH OR RANGE        (A) : 0.97918                            
REMARK 200  MONOCHROMATOR                  : SI 111                             
REMARK 200  OPTICS                         : NULL                               
REMARK 200                                                                      
REMARK 200  DETECTOR TYPE                  : PIXEL                              
REMARK 200  DETECTOR MANUFACTURER          : DECTRIS PILATUS3 S 6M              
REMARK 200  INTENSITY-INTEGRATION SOFTWARE : HKL-3000                           
REMARK 200  DATA SCALING SOFTWARE          : HKL-3000                           
REMARK 200                                                                      
REMARK 200  NUMBER OF UNIQUE REFLECTIONS   : 48010                              
REMARK 200  RESOLUTION RANGE HIGH      (A) : 1.800                              
REMARK 200  RESOLUTION RANGE LOW       (A) : 38.000                             
REMARK 200  REJECTION CRITERIA  (SIGMA(I)) : -3.000                             
REMARK 200                                                                      
REMARK 200 OVERALL.                                                             
REMARK 200  COMPLETENESS FOR RANGE     (%) : 96.5                               
REMARK 200  DATA REDUNDANCY                : 2.700                              
REMARK 200  R MERGE                    (I) : 0.08900                            
REMARK 200  R SYM                      (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR THE DATA SET  : 19.0000                            
REMARK 200                                                                      
REMARK 200 IN THE HIGHEST RESOLUTION SHELL.                                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.80                     
REMARK 200  HIGHEST RESOLUTION SHELL, RANGE LOW  (A) : 1.83                     
REMARK 200  COMPLETENESS FOR SHELL     (%) : 97.4                               
REMARK 200  DATA REDUNDANCY IN SHELL       : 2.50                               
REMARK 200  R MERGE FOR SHELL          (I) : 0.97300                            
REMARK 200  R SYM FOR SHELL            (I) : NULL                               
REMARK 200  <I/SIGMA(I)> FOR SHELL         : NULL                               
REMARK 200                                                                      
REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH                              
REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT        
REMARK 200 SOFTWARE USED: HKL-3000                                              
REMARK 200 STARTING MODEL: 6YB7                                                 
REMARK 200                                                                      
REMARK 200 REMARK: NULL                                                         
REMARK 280                                                                      
REMARK 280 CRYSTAL                                                              
REMARK 280 SOLVENT CONTENT, VS   (%): 39.05                                     
REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.02                     
REMARK 280                                                                      
REMARK 280 CRYSTALLIZATION CONDITIONS: 0.15M AMMONIUM SULFATE,0.1M TRIS,15%     
REMARK 280  PEG4000, PH 8.0, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 289K    
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY                                            
REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1                         
REMARK 290                                                                      
REMARK 290      SYMOP   SYMMETRY                                                
REMARK 290     NNNMMM   OPERATOR                                                
REMARK 290       1555   X,Y,Z                                                   
REMARK 290       2555   -X,Y+1/2,-Z                                             
REMARK 290                                                                      
REMARK 290     WHERE NNN -> OPERATOR NUMBER                                     
REMARK 290           MMM -> TRANSLATION VECTOR                                  
REMARK 290                                                                      
REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS                            
REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM             
REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY                
REMARK 290 RELATED MOLECULES.                                                   
REMARK 290   SMTRY1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 290   SMTRY3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 290   SMTRY1   2 -1.000000  0.000000  0.000000        0.00000            
REMARK 290   SMTRY2   2  0.000000  1.000000  0.000000       26.89550            
REMARK 290   SMTRY3   2  0.000000  0.000000 -1.000000        0.00000            
REMARK 290                                                                      
REMARK 290 REMARK: NULL                                                         
REMARK 300                                                                      
REMARK 300 BIOMOLECULE: 1                                                       
REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM                
REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN                  
REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON               
REMARK 300 BURIED SURFACE AREA.                                                 
REMARK 350                                                                      
REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN           
REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE                
REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS          
REMARK 350 GIVEN BELOW.  BOTH NON-CRYSTALLOGRAPHIC AND                          
REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN.                               
REMARK 350                                                                      
REMARK 350 BIOMOLECULE: 1                                                       
REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC                           
REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC                    
REMARK 350 SOFTWARE USED: PISA                                                  
REMARK 350 TOTAL BURIED SURFACE AREA: 3810 ANGSTROM**2                          
REMARK 350 SURFACE AREA OF THE COMPLEX: 25160 ANGSTROM**2                       
REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -21.0 KCAL/MOL                        
REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B                                  
REMARK 350   BIOMT1   1  1.000000  0.000000  0.000000        0.00000            
REMARK 350   BIOMT2   1  0.000000  1.000000  0.000000        0.00000            
REMARK 350   BIOMT3   1  0.000000  0.000000  1.000000        0.00000            
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT                     
REMARK 500                                                                      
REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT.                            
REMARK 500                                                                      
REMARK 500  ATM1  RES C  SSEQI   ATM2  RES C  SSEQI           DISTANCE          
REMARK 500   OE1  GLU B   240     O    HOH B   501              2.14            
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 500                                                                      
REMARK 500 GEOMETRY AND STEREOCHEMISTRY                                         
REMARK 500 SUBTOPIC: TORSION ANGLES                                             
REMARK 500                                                                      
REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS:            
REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER;               
REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE).                             
REMARK 500                                                                      
REMARK 500 STANDARD TABLE:                                                      
REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2)                    
REMARK 500                                                                      
REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI-           
REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400            
REMARK 500                                                                      
REMARK 500  M RES CSSEQI        PSI       PHI                                   
REMARK 500    ASP A  33     -128.66     53.10                                   
REMARK 500    ASN A  51       71.85   -160.17                                   
REMARK 500    ASN A  84     -122.10     52.25                                   
REMARK 500    TYR A 154      -90.92     59.36                                   
REMARK 500    SER A 301      -41.81   -146.07                                   
REMARK 500    ASP B  33     -125.64     50.54                                   
REMARK 500    ASN B  51       73.84   -156.41                                   
REMARK 500    ASN B  84     -116.30     47.36                                   
REMARK 500    TYR B 154      -89.72     75.14                                   
REMARK 500                                                                      
REMARK 500 REMARK: NULL                                                         
REMARK 800                                                                      
REMARK 800 SITE                                                                 
REMARK 800 SITE_IDENTIFIER: AC1                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: binding site for residue EDO A 401                 
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC2                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: binding site for residue CL A 402                  
REMARK 800                                                                      
REMARK 800 SITE_IDENTIFIER: AC3                                                 
REMARK 800 EVIDENCE_CODE: SOFTWARE                                              
REMARK 800 SITE_DESCRIPTION: binding site for residue EDO B 401                 
DBREF  6XKF A    1   306  UNP    P0DTD1   R1AB_SARS2    3264   3569             
DBREF  6XKF B    1   306  UNP    P0DTD1   R1AB_SARS2    3264   3569             
SEQRES   1 A  306  SER GLY PHE ARG LYS MET ALA PHE PRO SER GLY LYS VAL          
SEQRES   2 A  306  GLU GLY CYS MET VAL GLN VAL THR CYS GLY THR THR THR          
SEQRES   3 A  306  LEU ASN GLY LEU TRP LEU ASP ASP VAL VAL TYR CYS PRO          
SEQRES   4 A  306  ARG HIS VAL ILE CYS THR SER GLU ASP MET LEU ASN PRO          
SEQRES   5 A  306  ASN TYR GLU ASP LEU LEU ILE ARG LYS SER ASN HIS ASN          
SEQRES   6 A  306  PHE LEU VAL GLN ALA GLY ASN VAL GLN LEU ARG VAL ILE          
SEQRES   7 A  306  GLY HIS SER MET GLN ASN CYS VAL LEU LYS LEU LYS VAL          
SEQRES   8 A  306  ASP THR ALA ASN PRO LYS THR PRO LYS TYR LYS PHE VAL          
SEQRES   9 A  306  ARG ILE GLN PRO GLY GLN THR PHE SER VAL LEU ALA CYS          
SEQRES  10 A  306  TYR ASN GLY SER PRO SER GLY VAL TYR GLN CYS ALA MET          
SEQRES  11 A  306  ARG PRO ASN PHE THR ILE LYS GLY SER PHE LEU ASN GLY          
SEQRES  12 A  306  SER CSX GLY SER VAL GLY PHE ASN ILE ASP TYR ASP CYS          
SEQRES  13 A  306  VAL SER PHE CYS TYR MET HIS HIS MET GLU LEU PRO THR          
SEQRES  14 A  306  GLY VAL HIS ALA GLY THR ASP LEU GLU GLY ASN PHE TYR          
SEQRES  15 A  306  GLY PRO PHE VAL ASP ARG GLN THR ALA GLN ALA ALA GLY          
SEQRES  16 A  306  THR ASP THR THR ILE THR VAL ASN VAL LEU ALA TRP LEU          
SEQRES  17 A  306  TYR ALA ALA VAL ILE ASN GLY ASP ARG TRP PHE LEU ASN          
SEQRES  18 A  306  ARG PHE THR THR THR LEU ASN ASP PHE ASN LEU VAL ALA          
SEQRES  19 A  306  MET LYS TYR ASN TYR GLU PRO LEU THR GLN ASP HIS VAL          
SEQRES  20 A  306  ASP ILE LEU GLY PRO LEU SER ALA GLN THR GLY ILE ALA          
SEQRES  21 A  306  VAL LEU ASP MET CYS ALA SER LEU LYS GLU LEU LEU GLN          
SEQRES  22 A  306  ASN GLY MET ASN GLY ARG THR ILE LEU GLY SER ALA LEU          
SEQRES  23 A  306  LEU GLU ASP GLU PHE THR PRO PHE ASP VAL VAL ARG GLN          
SEQRES  24 A  306  CYS SER GLY VAL THR PHE GLN                                  
SEQRES   1 B  306  SER GLY PHE ARG LYS MET ALA PHE PRO SER GLY LYS VAL          
SEQRES   2 B  306  GLU GLY CYS MET VAL GLN VAL THR CYS GLY THR THR THR          
SEQRES   3 B  306  LEU ASN GLY LEU TRP LEU ASP ASP VAL VAL TYR CYS PRO          
SEQRES   4 B  306  ARG HIS VAL ILE CYS THR SER GLU ASP MET LEU ASN PRO          
SEQRES   5 B  306  ASN TYR GLU ASP LEU LEU ILE ARG LYS SER ASN HIS ASN          
SEQRES   6 B  306  PHE LEU VAL GLN ALA GLY ASN VAL GLN LEU ARG VAL ILE          
SEQRES   7 B  306  GLY HIS SER MET GLN ASN CYS VAL LEU LYS LEU LYS VAL          
SEQRES   8 B  306  ASP THR ALA ASN PRO LYS THR PRO LYS TYR LYS PHE VAL          
SEQRES   9 B  306  ARG ILE GLN PRO GLY GLN THR PHE SER VAL LEU ALA CYS          
SEQRES  10 B  306  TYR ASN GLY SER PRO SER GLY VAL TYR GLN CYS ALA MET          
SEQRES  11 B  306  ARG PRO ASN PHE THR ILE LYS GLY SER PHE LEU ASN GLY          
SEQRES  12 B  306  SER CSX GLY SER VAL GLY PHE ASN ILE ASP TYR ASP CYS          
SEQRES  13 B  306  VAL SER PHE CYS TYR MET HIS HIS MET GLU LEU PRO THR          
SEQRES  14 B  306  GLY VAL HIS ALA GLY THR ASP LEU GLU GLY ASN PHE TYR          
SEQRES  15 B  306  GLY PRO PHE VAL ASP ARG GLN THR ALA GLN ALA ALA GLY          
SEQRES  16 B  306  THR ASP THR THR ILE THR VAL ASN VAL LEU ALA TRP LEU          
SEQRES  17 B  306  TYR ALA ALA VAL ILE ASN GLY ASP ARG TRP PHE LEU ASN          
SEQRES  18 B  306  ARG PHE THR THR THR LEU ASN ASP PHE ASN LEU VAL ALA          
SEQRES  19 B  306  MET LYS TYR ASN TYR GLU PRO LEU THR GLN ASP HIS VAL          
SEQRES  20 B  306  ASP ILE LEU GLY PRO LEU SER ALA GLN THR GLY ILE ALA          
SEQRES  21 B  306  VAL LEU ASP MET CYS ALA SER LEU LYS GLU LEU LEU GLN          
SEQRES  22 B  306  ASN GLY MET ASN GLY ARG THR ILE LEU GLY SER ALA LEU          
SEQRES  23 B  306  LEU GLU ASP GLU PHE THR PRO PHE ASP VAL VAL ARG GLN          
SEQRES  24 B  306  CYS SER GLY VAL THR PHE GLN                                  
MODRES 6XKF CSX A  145  CYS  MODIFIED RESIDUE                                   
MODRES 6XKF CSX B  145  CYS  MODIFIED RESIDUE                                   
HET    CSX  A 145       7                                                       
HET    CSX  B 145       7                                                       
HET    EDO  A 401       4                                                       
HET     CL  A 402       1                                                       
HET    EDO  B 401       4                                                       
HETNAM     CSX S-OXY CYSTEINE                                                   
HETNAM     EDO 1,2-ETHANEDIOL                                                   
HETNAM      CL CHLORIDE ION                                                     
HETSYN     EDO ETHYLENE GLYCOL                                                  
FORMUL   1  CSX    2(C3 H7 N O3 S)                                              
FORMUL   3  EDO    2(C2 H6 O2)                                                  
FORMUL   4   CL    CL 1-                                                        
FORMUL   6  HOH   *138(H2 O)                                                    
HELIX    1 AA1 SER A   10  GLY A   15  1                                   6    
HELIX    2 AA2 HIS A   41  CYS A   44  5                                   4    
HELIX    3 AA3 GLU A   47  ASN A   51  5                                   5    
HELIX    4 AA4 ASN A   53  ARG A   60  1                                   8    
HELIX    5 AA5 SER A   62  HIS A   64  5                                   3    
HELIX    6 AA6 ILE A  200  ASN A  214  1                                  15    
HELIX    7 AA7 THR A  226  TYR A  237  1                                  12    
HELIX    8 AA8 THR A  243  LEU A  250  1                                   8    
HELIX    9 AA9 LEU A  250  GLY A  258  1                                   9    
HELIX   10 AB1 ALA A  260  GLY A  275  1                                  16    
HELIX   11 AB2 THR A  292  CYS A  300  1                                   9    
HELIX   12 AB3 SER B   10  GLY B   15  1                                   6    
HELIX   13 AB4 HIS B   41  CYS B   44  5                                   4    
HELIX   14 AB5 GLU B   47  ASN B   51  5                                   5    
HELIX   15 AB6 ASN B   53  ARG B   60  1                                   8    
HELIX   16 AB7 SER B   62  HIS B   64  5                                   3    
HELIX   17 AB8 ILE B  200  ASN B  214  1                                  15    
HELIX   18 AB9 THR B  226  TYR B  237  1                                  12    
HELIX   19 AC1 THR B  243  LEU B  250  1                                   8    
HELIX   20 AC2 LEU B  250  GLY B  258  1                                   9    
HELIX   21 AC3 ALA B  260  GLY B  275  1                                  16    
HELIX   22 AC4 THR B  292  GLY B  302  1                                  11    
SHEET    1 AA1 7 VAL A  73  LEU A  75  0                                        
SHEET    2 AA1 7 PHE A  66  ALA A  70 -1  N  ALA A  70   O  VAL A  73           
SHEET    3 AA1 7 MET A  17  CYS A  22 -1  N  THR A  21   O  LEU A  67           
SHEET    4 AA1 7 THR A  25  LEU A  32 -1  O  LEU A  27   N  VAL A  20           
SHEET    5 AA1 7 VAL A  35  PRO A  39 -1  O  VAL A  35   N  LEU A  32           
SHEET    6 AA1 7 VAL A  86  VAL A  91 -1  O  LEU A  87   N  CYS A  38           
SHEET    7 AA1 7 VAL A  77  GLN A  83 -1  N  SER A  81   O  LYS A  88           
SHEET    1 AA2 5 LYS A 100  PHE A 103  0                                        
SHEET    2 AA2 5 CYS A 156  GLU A 166  1  O  PHE A 159   N  LYS A 102           
SHEET    3 AA2 5 VAL A 148  ASP A 153 -1  N  ASN A 151   O  SER A 158           
SHEET    4 AA2 5 THR A 111  TYR A 118 -1  N  SER A 113   O  PHE A 150           
SHEET    5 AA2 5 SER A 121  ALA A 129 -1  O  CYS A 128   N  PHE A 112           
SHEET    1 AA3 3 LYS A 100  PHE A 103  0                                        
SHEET    2 AA3 3 CYS A 156  GLU A 166  1  O  PHE A 159   N  LYS A 102           
SHEET    3 AA3 3 HIS A 172  THR A 175 -1  O  ALA A 173   N  MET A 165           
SHEET    1 AA4 7 VAL B  73  GLN B  74  0                                        
SHEET    2 AA4 7 PHE B  66  ALA B  70 -1  N  ALA B  70   O  VAL B  73           
SHEET    3 AA4 7 MET B  17  CYS B  22 -1  N  THR B  21   O  LEU B  67           
SHEET    4 AA4 7 THR B  25  LEU B  32 -1  O  LEU B  27   N  VAL B  20           
SHEET    5 AA4 7 VAL B  35  PRO B  39 -1  O  VAL B  35   N  LEU B  32           
SHEET    6 AA4 7 VAL B  86  VAL B  91 -1  O  LEU B  87   N  CYS B  38           
SHEET    7 AA4 7 VAL B  77  GLN B  83 -1  N  GLN B  83   O  VAL B  86           
SHEET    1 AA5 5 TYR B 101  PHE B 103  0                                        
SHEET    2 AA5 5 CYS B 156  GLU B 166  1  O  PHE B 159   N  LYS B 102           
SHEET    3 AA5 5 VAL B 148  ASP B 153 -1  N  ASN B 151   O  SER B 158           
SHEET    4 AA5 5 THR B 111  TYR B 118 -1  N  SER B 113   O  PHE B 150           
SHEET    5 AA5 5 SER B 121  ALA B 129 -1  O  SER B 123   N  ALA B 116           
SHEET    1 AA6 3 TYR B 101  PHE B 103  0                                        
SHEET    2 AA6 3 CYS B 156  GLU B 166  1  O  PHE B 159   N  LYS B 102           
SHEET    3 AA6 3 HIS B 172  THR B 175 -1  O  ALA B 173   N  MET B 165           
LINK         C   SER A 144                 N   CSX A 145     1555   1555  1.33  
LINK         C   CSX A 145                 N   GLY A 146     1555   1555  1.33  
LINK         C   SER B 144                 N   CSX B 145     1555   1555  1.34  
LINK         C   CSX B 145                 N   GLY B 146     1555   1555  1.34  
SITE     1 AC1  3 PHE A 140  CSX A 145  HIS A 163                               
SITE     1 AC2  2 LYS A   5  EDO B 401                                          
SITE     1 AC3  4  CL A 402  ARG B   4  LYS B   5  HOH B 515                    
CRYST1   44.878   53.791  115.261  90.00 100.97  90.00 P 1 21 1      4          
ORIGX1      1.000000  0.000000  0.000000        0.00000                         
ORIGX2      0.000000  1.000000  0.000000        0.00000                         
ORIGX3      0.000000  0.000000  1.000000        0.00000                         
SCALE1      0.022283  0.000000  0.004321        0.00000                         
SCALE2      0.000000  0.018590  0.000000        0.00000                         
SCALE3      0.000000  0.000000  0.008838        0.00000