HEADER HYDROLASE INHIBITOR 02-JUL-14 4TX4 TITLE CRYSTAL STRUCTURE OF A SINGLE-DOMAIN CYSTEINE PROTEASE INHIBITOR FROM TITLE 2 COWPEA (VIGNA UNGUICULATA) COMPND MOL_ID: 1; COMPND 2 MOLECULE: CYSTEINE PROTEINASE INHIBITOR; COMPND 3 CHAIN: B, A; COMPND 4 FRAGMENT: UNP RESIDUES 15-97; COMPND 5 SYNONYM: CYSTATIN; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: VIGNA UNGUICULATA; SOURCE 3 ORGANISM_COMMON: COWPEA; SOURCE 4 ORGANISM_TAXID: 3917; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: ARCTICEXPRESS (DE3); SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PET302 KEYWDS CYSTEINE PROTEASE INHIBITOR, HYDROLASE INHIBITOR EXPDTA X-RAY DIFFRACTION AUTHOR H.M.PEREIRA,N.VALADARES,J.E.MONTEIRO-JUNIOR,C.P.S.CARVALHO, AUTHOR 2 T.B.GRANGEIRO REVDAT 6 27-DEC-23 4TX4 1 REMARK REVDAT 5 01-JAN-20 4TX4 1 REMARK REVDAT 4 17-APR-19 4TX4 1 REMARK REVDAT 3 13-SEP-17 4TX4 1 REMARK REVDAT 2 31-MAY-17 4TX4 1 JRNL REVDAT 1 14-OCT-15 4TX4 0 JRNL AUTH J.E.MONTEIRO JUNIOR,N.F.VALADARES,H.D.PEREIRA,F.H.DYSZY, JRNL AUTH 2 A.J.DA COSTA FILHO,A.F.UCHOA,A.S.DE OLIVEIRA, JRNL AUTH 3 C.P.DA SILVEIRA CARVALHO,T.B.GRANGEIRO JRNL TITL EXPRESSION IN ESCHERICHIA COLI OF CYSTEINE PROTEASE JRNL TITL 2 INHIBITORS FROM COWPEA (VIGNA UNGUICULATA): THE CRYSTAL JRNL TITL 3 STRUCTURE OF A SINGLE-DOMAIN CYSTATIN GIVES INSIGHTS ON ITS JRNL TITL 4 THERMAL AND PH STABILITY. JRNL REF INT. J. BIOL. MACROMOL. V. 102 29 2017 JRNL REFN ISSN 1879-0003 JRNL PMID 28389401 JRNL DOI 10.1016/J.IJBIOMAC.2017.04.008 REMARK 2 REMARK 2 RESOLUTION. 1.95 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (PHENIX.REFINE: 1.9_1692) 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) : 1.95 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 27.34 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.990 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.5 REMARK 3 NUMBER OF REFLECTIONS : 17573 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.174 REMARK 3 R VALUE (WORKING SET) : 0.173 REMARK 3 FREE R VALUE : 0.195 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 879 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 27.3416 - 3.5417 0.95 2832 150 0.1658 0.1688 REMARK 3 2 3.5417 - 2.8121 1.00 2819 148 0.1736 0.1957 REMARK 3 3 2.8121 - 2.4569 1.00 2800 147 0.1760 0.1877 REMARK 3 4 2.4569 - 2.2323 1.00 2793 147 0.1721 0.2542 REMARK 3 5 2.2323 - 2.0724 1.00 2774 146 0.1743 0.2225 REMARK 3 6 2.0724 - 1.9503 0.97 2676 141 0.2005 0.2311 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) : 0.190 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 18.980 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 29.74 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 : 0.014 1327 REMARK 3 ANGLE : 1.322 1788 REMARK 3 CHIRALITY : 0.079 193 REMARK 3 PLANARITY : 0.007 229 REMARK 3 DIHEDRAL : 15.566 486 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 7 REMARK 3 TLS GROUP : 1 REMARK 3 SELECTION: CHAIN 'B' AND (RESID 16 THROUGH 34 ) REMARK 3 ORIGIN FOR THE GROUP (A): -6.0525 -6.2047 16.4632 REMARK 3 T TENSOR REMARK 3 T11: 0.2031 T22: 0.2086 REMARK 3 T33: 0.2479 T12: 0.0442 REMARK 3 T13: -0.0241 T23: -0.0605 REMARK 3 L TENSOR REMARK 3 L11: 3.0059 L22: 2.9489 REMARK 3 L33: 6.7270 L12: -0.3350 REMARK 3 L13: 0.3977 L23: -1.2032 REMARK 3 S TENSOR REMARK 3 S11: -0.3674 S12: -0.2259 S13: 0.4079 REMARK 3 S21: 0.4659 S22: 0.3067 S23: -0.0170 REMARK 3 S31: -0.3296 S32: -0.1281 S33: -0.0026 REMARK 3 TLS GROUP : 2 REMARK 3 SELECTION: CHAIN 'B' AND (RESID 35 THROUGH 53 ) REMARK 3 ORIGIN FOR THE GROUP (A): -1.5492 -11.1838 18.8491 REMARK 3 T TENSOR REMARK 3 T11: 0.1762 T22: 0.2093 REMARK 3 T33: 0.2037 T12: -0.0027 REMARK 3 T13: -0.0040 T23: -0.0490 REMARK 3 L TENSOR REMARK 3 L11: 1.2398 L22: 1.7269 REMARK 3 L33: 0.4309 L12: 1.0504 REMARK 3 L13: -0.5252 L23: 0.2066 REMARK 3 S TENSOR REMARK 3 S11: 0.0039 S12: -0.0297 S13: -0.2999 REMARK 3 S21: 0.1636 S22: 0.1006 S23: -0.1307 REMARK 3 S31: 0.0381 S32: 0.1501 S33: -0.0271 REMARK 3 TLS GROUP : 3 REMARK 3 SELECTION: CHAIN 'B' AND (RESID 54 THROUGH 94 ) REMARK 3 ORIGIN FOR THE GROUP (A): 18.6114 -1.1940 8.9981 REMARK 3 T TENSOR REMARK 3 T11: 0.1390 T22: 0.1718 REMARK 3 T33: 0.2015 T12: 0.0456 REMARK 3 T13: -0.0335 T23: -0.0465 REMARK 3 L TENSOR REMARK 3 L11: 1.8087 L22: 1.2633 REMARK 3 L33: 3.4025 L12: 0.0385 REMARK 3 L13: -1.2251 L23: 0.4328 REMARK 3 S TENSOR REMARK 3 S11: -0.0426 S12: -0.1508 S13: 0.1561 REMARK 3 S21: -0.0318 S22: 0.0044 S23: 0.0436 REMARK 3 S31: -0.3733 S32: -0.2973 S33: 0.0101 REMARK 3 TLS GROUP : 4 REMARK 3 SELECTION: CHAIN 'A' AND (RESID 15 THROUGH 39 ) REMARK 3 ORIGIN FOR THE GROUP (A): 23.0412 -5.7994 7.1615 REMARK 3 T TENSOR REMARK 3 T11: 0.1786 T22: 0.1792 REMARK 3 T33: 0.1952 T12: 0.0405 REMARK 3 T13: -0.0064 T23: -0.0097 REMARK 3 L TENSOR REMARK 3 L11: 3.4958 L22: 2.6801 REMARK 3 L33: 3.9535 L12: 0.7177 REMARK 3 L13: 0.3987 L23: 0.5935 REMARK 3 S TENSOR REMARK 3 S11: -0.1363 S12: -0.3804 S13: -0.0102 REMARK 3 S21: 0.0369 S22: -0.0392 S23: -0.1403 REMARK 3 S31: 0.0772 S32: -0.2798 S33: 0.1071 REMARK 3 TLS GROUP : 5 REMARK 3 SELECTION: CHAIN 'A' AND (RESID 40 THROUGH 53 ) REMARK 3 ORIGIN FOR THE GROUP (A): 20.2416 4.6305 13.1645 REMARK 3 T TENSOR REMARK 3 T11: 0.2603 T22: 0.2070 REMARK 3 T33: 0.2594 T12: -0.0116 REMARK 3 T13: -0.0142 T23: -0.0659 REMARK 3 L TENSOR REMARK 3 L11: 1.9839 L22: 0.6465 REMARK 3 L33: 3.9012 L12: 0.2393 REMARK 3 L13: -2.4091 L23: -0.6679 REMARK 3 S TENSOR REMARK 3 S11: 0.3004 S12: -0.1616 S13: 0.6708 REMARK 3 S21: -0.1166 S22: -0.0106 S23: 0.1778 REMARK 3 S31: -0.5509 S32: 0.0419 S33: -0.2087 REMARK 3 TLS GROUP : 6 REMARK 3 SELECTION: CHAIN 'A' AND (RESID 54 THROUGH 81 ) REMARK 3 ORIGIN FOR THE GROUP (A): -0.9821 -9.9480 17.5735 REMARK 3 T TENSOR REMARK 3 T11: 0.1321 T22: 0.1605 REMARK 3 T33: 0.1581 T12: 0.0125 REMARK 3 T13: -0.0131 T23: -0.0321 REMARK 3 L TENSOR REMARK 3 L11: 1.4023 L22: 3.2122 REMARK 3 L33: 1.6581 L12: 0.7560 REMARK 3 L13: 0.2092 L23: 1.2001 REMARK 3 S TENSOR REMARK 3 S11: -0.0070 S12: 0.1069 S13: -0.1339 REMARK 3 S21: 0.1113 S22: 0.2053 S23: -0.0982 REMARK 3 S31: 0.0684 S32: 0.0637 S33: 0.0342 REMARK 3 TLS GROUP : 7 REMARK 3 SELECTION: CHAIN 'A' AND (RESID 82 THROUGH 97 ) REMARK 3 ORIGIN FOR THE GROUP (A): 0.0287 -10.2691 13.6957 REMARK 3 T TENSOR REMARK 3 T11: 0.1572 T22: 0.2058 REMARK 3 T33: 0.1723 T12: 0.0063 REMARK 3 T13: -0.0097 T23: -0.0041 REMARK 3 L TENSOR REMARK 3 L11: 1.1590 L22: 7.2350 REMARK 3 L33: 3.2279 L12: 0.9669 REMARK 3 L13: 0.5209 L23: 3.1411 REMARK 3 S TENSOR REMARK 3 S11: -0.0968 S12: -0.0823 S13: -0.0056 REMARK 3 S21: -0.2581 S22: 0.3474 S23: -0.2070 REMARK 3 S31: -0.1739 S32: 0.1468 S33: 0.0256 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 4TX4 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 03-JUL-14. REMARK 100 THE DEPOSITION ID IS D_1000202412. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 17-NOV-11 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : RIGAKU MICROMAX-007 HF REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : MIRROR REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IV++ REMARK 200 INTENSITY-INTEGRATION SOFTWARE : D*TREK REMARK 200 DATA SCALING SOFTWARE : XSCALE REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 17574 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.950 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.5 REMARK 200 DATA REDUNDANCY : 3.810 REMARK 200 R MERGE (I) : 0.05600 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 16.7900 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.95 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.07 REMARK 200 COMPLETENESS FOR SHELL (%) : 96.6 REMARK 200 DATA REDUNDANCY IN SHELL : 3.47 REMARK 200 R MERGE FOR SHELL (I) : 0.35000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 3.420 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 60.67 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.13 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 200MM AMMONIUM SULPHATE, 20% PEG 4000, REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 291K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 REMARK 290 4555 X+1/2,-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 20.91500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 43.55650 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 32.32000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 43.55650 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 20.91500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 32.32000 REMARK 290 SMTRY3 4 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: 4260 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 9810 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -39.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, A 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 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 ASN B 15 REMARK 465 ALA B 95 REMARK 465 PRO B 96 REMARK 465 ALA B 97 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 LEU B 17 CG CD1 CD2 REMARK 470 GLU B 18 CG CD OE1 OE2 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 O HOH B 139 O HOH B 158 1.87 REMARK 500 O HOH B 156 O HOH A 246 2.03 REMARK 500 NZ LYS B 90 O HOH B 174 2.04 REMARK 500 O HOH B 162 O HOH B 179 2.07 REMARK 500 O HOH A 245 O HOH A 259 2.12 REMARK 500 O HOH B 165 O HOH A 268 2.15 REMARK 500 O HOH A 271 O HOH A 272 2.15 REMARK 500 O HOH B 148 O HOH B 181 2.17 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 O HOH B 116 O HOH A 218 1455 2.00 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 SO4 A 101 DBREF 4TX4 B 15 97 UNP Q06445 CYTI_VIGUN 15 97 DBREF 4TX4 A 15 97 UNP Q06445 CYTI_VIGUN 15 97 SEQRES 1 B 83 ASN SER LEU GLU ILE ASP SER LEU ALA ARG PHE ALA VAL SEQRES 2 B 83 GLU GLU HIS ASN LYS LYS GLN ASN ALA LEU LEU GLU PHE SEQRES 3 B 83 GLY ARG VAL VAL SER ALA GLN GLN GLN VAL VAL SER GLY SEQRES 4 B 83 THR LEU TYR THR ILE THR LEU GLU ALA LYS ASP GLY GLY SEQRES 5 B 83 GLN LYS LYS VAL TYR GLU ALA LYS VAL TRP GLU LYS PRO SEQRES 6 B 83 TRP LEU ASN PHE LYS GLU LEU GLN GLU PHE LYS HIS VAL SEQRES 7 B 83 GLY ASP ALA PRO ALA SEQRES 1 A 83 ASN SER LEU GLU ILE ASP SER LEU ALA ARG PHE ALA VAL SEQRES 2 A 83 GLU GLU HIS ASN LYS LYS GLN ASN ALA LEU LEU GLU PHE SEQRES 3 A 83 GLY ARG VAL VAL SER ALA GLN GLN GLN VAL VAL SER GLY SEQRES 4 A 83 THR LEU TYR THR ILE THR LEU GLU ALA LYS ASP GLY GLY SEQRES 5 A 83 GLN LYS LYS VAL TYR GLU ALA LYS VAL TRP GLU LYS PRO SEQRES 6 A 83 TRP LEU ASN PHE LYS GLU LEU GLN GLU PHE LYS HIS VAL SEQRES 7 A 83 GLY ASP ALA PRO ALA HET SO4 A 101 5 HETNAM SO4 SULFATE ION FORMUL 3 SO4 O4 S 2- FORMUL 4 HOH *157(H2 O) HELIX 1 AA1 SER B 16 ASN B 35 1 20 HELIX 2 AA2 PRO B 79 ASN B 82 5 4 HELIX 3 AA3 SER A 16 ASN A 35 1 20 HELIX 4 AA4 PRO A 79 ASN A 82 5 4 SHEET 1 AA1 4 GLU B 39 VAL B 50 0 SHEET 2 AA1 4 THR A 54 ASP A 64 -1 O THR A 59 N VAL B 44 SHEET 3 AA1 4 GLN A 67 LYS A 78 -1 O ALA A 73 N ILE A 58 SHEET 4 AA1 4 PHE A 83 ASP A 94 -1 O GLY A 93 N VAL A 70 SHEET 1 AA2 4 PHE B 83 GLY B 93 0 SHEET 2 AA2 4 GLN B 67 LYS B 78 -1 N VAL B 70 O GLY B 93 SHEET 3 AA2 4 THR B 54 ASP B 64 -1 N ILE B 58 O ALA B 73 SHEET 4 AA2 4 GLU A 39 VAL A 50 -1 O GLN A 49 N LEU B 55 SITE 1 AC1 10 SER A 52 GLU A 61 LYS A 68 LYS A 78 SITE 2 AC1 10 TRP A 80 LEU A 81 HOH A 201 HOH A 202 SITE 3 AC1 10 HOH A 221 ARG B 42 CRYST1 41.830 64.640 87.113 90.00 90.00 90.00 P 21 21 21 8 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 0.023906 0.000000 0.000000 0.00000 SCALE2 0.000000 0.015470 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011479 0.00000