HEADER DE NOVO PROTEIN 17-OCT-18 6MSR TITLE CRYSTAL STRUCTURE OF PRO-2.5 COMPND MOL_ID: 1; COMPND 2 MOLECULE: PRO-2.5; COMPND 3 CHAIN: A, B, C; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SYNTHETIC CONSTRUCT; SOURCE 3 ORGANISM_TAXID: 32630; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS DE NOVO PROTEIN, COMPUTATIONAL DESIGN, HELICAL BUNDLE EXPDTA X-RAY DIFFRACTION AUTHOR M.J.BICK,B.SANKARAN,S.E.BOYKEN,D.BAKER REVDAT 6 03-APR-24 6MSR 1 REMARK REVDAT 5 13-MAR-24 6MSR 1 REMARK REVDAT 4 18-MAR-20 6MSR 1 AUTHOR REVDAT 3 20-NOV-19 6MSR 1 REMARK REVDAT 2 29-MAY-19 6MSR 1 TITLE JRNL REVDAT 1 08-MAY-19 6MSR 0 JRNL AUTH S.E.BOYKEN,M.A.BENHAIM,F.BUSCH,M.JIA,M.J.BICK,H.CHOI, JRNL AUTH 2 J.C.KLIMA,Z.CHEN,C.WALKEY,A.MILEANT,A.SAHASRABUDDHE,K.Y.WEI, JRNL AUTH 3 E.A.HODGE,S.BYRON,A.QUIJANO-RUBIO,B.SANKARAN,N.P.KING, JRNL AUTH 4 J.LIPPINCOTT-SCHWARTZ,V.H.WYSOCKI,K.K.LEE,D.BAKER JRNL TITL DE NOVO DESIGN OF TUNABLE, PH-DRIVEN CONFORMATIONAL CHANGES. JRNL REF SCIENCE V. 364 658 2019 JRNL REFN ESSN 1095-9203 JRNL PMID 31097662 JRNL DOI 10.1126/SCIENCE.AAV7897 REMARK 2 REMARK 2 RESOLUTION. 1.55 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (1.13_2992: ???) 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 : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.55 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 28.72 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 95.4 REMARK 3 NUMBER OF REFLECTIONS : 30055 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.243 REMARK 3 R VALUE (WORKING SET) : 0.242 REMARK 3 FREE R VALUE : 0.264 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.680 REMARK 3 FREE R VALUE TEST SET COUNT : 1407 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 28.7222 - 3.3378 0.97 3023 145 0.2099 0.2208 REMARK 3 2 3.3378 - 2.6499 0.99 3015 148 0.2313 0.3173 REMARK 3 3 2.6499 - 2.3151 0.99 2971 153 0.2339 0.2422 REMARK 3 4 2.3151 - 2.1035 0.99 2938 150 0.2675 0.2796 REMARK 3 5 2.1035 - 1.9528 0.98 2906 137 0.2734 0.2568 REMARK 3 6 1.9528 - 1.8377 0.95 2858 139 0.2774 0.3075 REMARK 3 7 1.8377 - 1.7456 0.94 2769 133 0.3017 0.3405 REMARK 3 8 1.7456 - 1.6697 0.93 2790 141 0.3294 0.3827 REMARK 3 9 1.6697 - 1.6054 0.90 2699 132 0.3642 0.3166 REMARK 3 10 1.6054 - 1.5500 0.89 2679 129 0.3900 0.3889 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : NULL 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) : 0.220 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 33.150 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 : 0.003 1771 REMARK 3 ANGLE : 0.447 2423 REMARK 3 CHIRALITY : 0.030 310 REMARK 3 PLANARITY : 0.002 323 REMARK 3 DIHEDRAL : 20.530 1124 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 6 REMARK 3 TLS GROUP : 1 REMARK 3 SELECTION: CHAIN 'A' AND (RESID 0 THROUGH 38 ) REMARK 3 ORIGIN FOR THE GROUP (A): 39.4089 17.2149 29.7212 REMARK 3 T TENSOR REMARK 3 T11: 0.2734 T22: 0.5300 REMARK 3 T33: 0.3733 T12: -0.0145 REMARK 3 T13: 0.0030 T23: 0.1557 REMARK 3 L TENSOR REMARK 3 L11: 0.1854 L22: 1.3115 REMARK 3 L33: 3.0117 L12: -0.2531 REMARK 3 L13: 0.9829 L23: 0.1753 REMARK 3 S TENSOR REMARK 3 S11: -0.2998 S12: 0.3249 S13: 0.0292 REMARK 3 S21: -0.2306 S22: -0.3676 S23: -0.1578 REMARK 3 S31: -0.2480 S32: 1.5866 S33: -0.0056 REMARK 3 TLS GROUP : 2 REMARK 3 SELECTION: CHAIN 'A' AND (RESID 39 THROUGH 75 ) REMARK 3 ORIGIN FOR THE GROUP (A): 32.5755 12.0555 31.0038 REMARK 3 T TENSOR REMARK 3 T11: 0.2841 T22: 0.2628 REMARK 3 T33: 0.2255 T12: 0.0823 REMARK 3 T13: 0.0376 T23: 0.0057 REMARK 3 L TENSOR REMARK 3 L11: 1.2008 L22: 0.8890 REMARK 3 L33: 0.3989 L12: 0.3739 REMARK 3 L13: 0.5447 L23: 0.1571 REMARK 3 S TENSOR REMARK 3 S11: -0.1741 S12: 0.2451 S13: -0.1470 REMARK 3 S21: -0.2439 S22: -0.1721 S23: -0.0096 REMARK 3 S31: 0.5466 S32: 0.2989 S33: -0.0045 REMARK 3 TLS GROUP : 3 REMARK 3 SELECTION: CHAIN 'B' AND (RESID 0 THROUGH 38 ) REMARK 3 ORIGIN FOR THE GROUP (A): 24.1923 7.4657 29.2668 REMARK 3 T TENSOR REMARK 3 T11: 0.5606 T22: 0.3494 REMARK 3 T33: 0.3879 T12: -0.1107 REMARK 3 T13: 0.1491 T23: -0.0678 REMARK 3 L TENSOR REMARK 3 L11: 1.2565 L22: 0.2354 REMARK 3 L33: 2.8913 L12: -0.7226 REMARK 3 L13: -0.4049 L23: -0.5017 REMARK 3 S TENSOR REMARK 3 S11: -0.1883 S12: 0.5021 S13: -0.0763 REMARK 3 S21: -0.4825 S22: -0.2761 S23: 0.0495 REMARK 3 S31: 1.0478 S32: -0.9161 S33: -0.0285 REMARK 3 TLS GROUP : 4 REMARK 3 SELECTION: CHAIN 'B' AND (RESID 39 THROUGH 75 ) REMARK 3 ORIGIN FOR THE GROUP (A): 22.8620 15.5424 30.6099 REMARK 3 T TENSOR REMARK 3 T11: 0.2443 T22: 0.3667 REMARK 3 T33: 0.2498 T12: -0.0245 REMARK 3 T13: -0.0016 T23: -0.0423 REMARK 3 L TENSOR REMARK 3 L11: 0.7864 L22: 1.3089 REMARK 3 L33: 0.5065 L12: -0.0590 REMARK 3 L13: -0.1690 L23: -0.7831 REMARK 3 S TENSOR REMARK 3 S11: -0.0235 S12: 0.3406 S13: -0.0274 REMARK 3 S21: -0.2462 S22: -0.1456 S23: 0.0869 REMARK 3 S31: 0.2586 S32: -1.0159 S33: -0.0005 REMARK 3 TLS GROUP : 5 REMARK 3 SELECTION: CHAIN 'C' AND (RESID 0 THROUGH 38 ) REMARK 3 ORIGIN FOR THE GROUP (A): 23.3642 25.6051 29.6453 REMARK 3 T TENSOR REMARK 3 T11: 0.4554 T22: 0.3433 REMARK 3 T33: 0.3779 T12: 0.1365 REMARK 3 T13: -0.1193 T23: -0.0861 REMARK 3 L TENSOR REMARK 3 L11: 0.7108 L22: 0.7259 REMARK 3 L33: 4.7176 L12: 0.7473 REMARK 3 L13: -0.3561 L23: 1.2266 REMARK 3 S TENSOR REMARK 3 S11: -0.1804 S12: 0.2483 S13: 0.0358 REMARK 3 S21: -0.2853 S22: -0.2988 S23: -0.0593 REMARK 3 S31: -1.2466 S32: -0.9141 S33: -0.0268 REMARK 3 TLS GROUP : 6 REMARK 3 SELECTION: CHAIN 'C' AND (RESID 39 THROUGH 75 ) REMARK 3 ORIGIN FOR THE GROUP (A): 30.5117 22.3719 29.3417 REMARK 3 T TENSOR REMARK 3 T11: 0.2932 T22: 0.2093 REMARK 3 T33: 0.2294 T12: -0.0520 REMARK 3 T13: -0.0417 T23: 0.0266 REMARK 3 L TENSOR REMARK 3 L11: 1.3428 L22: 1.6844 REMARK 3 L33: 0.6035 L12: -0.4050 REMARK 3 L13: -0.8150 L23: 0.7039 REMARK 3 S TENSOR REMARK 3 S11: -0.1728 S12: 0.2958 S13: 0.0995 REMARK 3 S21: -0.2869 S22: -0.1336 S23: -0.0433 REMARK 3 S31: -0.8460 S32: 0.2747 S33: -0.0020 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 6MSR COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 18-OCT-18. REMARK 100 THE DEPOSITION ID IS D_1000237521. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 26-JAN-18 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ALS REMARK 200 BEAMLINE : 8.2.2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.999994 REMARK 200 MONOCHROMATOR : DOUBLE-CRYSTAL SI(111) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315R REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS JUN 17, 2015 REMARK 200 DATA SCALING SOFTWARE : XDS JUN 17, 2015 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 42699 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.400 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.6 REMARK 200 DATA REDUNDANCY : 4.500 REMARK 200 R MERGE (I) : 0.08100 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 7.6300 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.40 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.44 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.3 REMARK 200 DATA REDUNDANCY IN SHELL : 4.17 REMARK 200 R MERGE FOR SHELL (I) : 3.49700 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 0.400 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER 2.8.1 REMARK 200 STARTING MODEL: COMPUTATIONALLY DESIGNED MODEL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 42.16 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.13 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.2 M POTASSIUM ACETATE AND 20% W/V REMARK 280 PEG 3350, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 290.15K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,Y,-Z REMARK 290 3555 X+1/2,Y+1/2,Z 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 0.00000 REMARK 290 SMTRY2 2 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 3 1.000000 0.000000 0.000000 28.80900 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 16.64050 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 28.80900 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 16.64050 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: TRIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 5570 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 10950 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -51.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C 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 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 GLU A 2 CD OE1 OE2 REMARK 470 ARG A 6 NE CZ NH1 NH2 REMARK 470 LYS A 20 CG CD CE NZ REMARK 470 ARG A 21 CG CD NE CZ NH1 NH2 REMARK 470 GLU A 31 CD OE1 OE2 REMARK 470 GLU A 32 CG CD OE1 OE2 REMARK 470 LYS A 34 CG CD CE NZ REMARK 470 LYS A 35 CG CD CE NZ REMARK 470 ARG A 47 CD NE CZ NH1 NH2 REMARK 470 LYS A 75 NZ REMARK 470 ARG B 6 CD NE CZ NH1 NH2 REMARK 470 LYS B 7 CD CE NZ REMARK 470 LYS B 13 NZ REMARK 470 LYS B 20 CG CD CE NZ REMARK 470 ARG B 21 CD NE CZ NH1 NH2 REMARK 470 SER B 25 OG REMARK 470 SER B 29 OG REMARK 470 GLU B 31 CG CD OE1 OE2 REMARK 470 GLU B 32 CD OE1 OE2 REMARK 470 LYS B 34 CE NZ REMARK 470 LYS B 35 CE NZ REMARK 470 ASN B 36 CG OD1 ND2 REMARK 470 LYS B 75 CD CE NZ REMARK 470 ARG C 6 CD NE CZ NH1 NH2 REMARK 470 LYS C 7 CD CE NZ REMARK 470 LYS C 13 CE NZ REMARK 470 ARG C 21 CD NE CZ NH1 NH2 REMARK 470 ARG C 27 CG CD NE CZ NH1 NH2 REMARK 470 SER C 29 OG REMARK 470 GLU C 31 CG CD OE1 OE2 REMARK 470 GLU C 32 CG CD OE1 OE2 REMARK 470 LYS C 34 CD CE NZ REMARK 470 LYS C 35 CG CD CE NZ REMARK 470 ASN C 36 CG OD1 ND2 REMARK 470 LYS C 75 CD CE NZ 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 OD1 ASN A 53 HD21 ASN C 53 1.58 REMARK 500 HD21 ASN B 53 OD1 ASN C 53 1.60 REMARK 500 OE2 GLU A 11 O HOH A 101 1.97 REMARK 500 OE2 GLU B 58 O HOH B 101 2.00 REMARK 500 OE1 GLU C 68 O HOH C 101 2.01 REMARK 500 O HOH C 130 O HOH C 140 2.03 REMARK 500 O HOH A 136 O HOH A 137 2.03 REMARK 500 O LYS B 13 O HOH B 102 2.07 REMARK 500 O HOH B 106 O HOH B 138 2.18 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 HH22 ARG A 72 OXT LYS C 75 4646 1.45 REMARK 500 O HOH A 142 O HOH C 118 4646 1.99 REMARK 500 O HOH A 147 O HOH C 102 4646 2.00 REMARK 500 NH2 ARG A 72 OXT LYS C 75 4646 2.00 REMARK 500 O HOH A 153 O HOH C 143 3545 2.04 REMARK 500 O HOH B 132 O HOH C 157 1545 2.06 REMARK 500 O HOH A 133 O HOH B 113 2655 2.08 REMARK 500 O HOH A 148 O HOH B 138 3555 2.15 REMARK 500 REMARK 500 REMARK: NULL DBREF 6MSR A 0 75 PDB 6MSR 6MSR 0 75 DBREF 6MSR B 0 75 PDB 6MSR 6MSR 0 75 DBREF 6MSR C 0 75 PDB 6MSR 6MSR 0 75 SEQRES 1 A 76 GLY SER GLU TYR GLU ILE ARG LYS ALA LEU GLU GLU LEU SEQRES 2 A 76 LYS ALA SER THR ALA GLU LEU LYS ARG ALA THR ALA SER SEQRES 3 A 76 LEU ARG ALA SER THR GLU GLU LEU LYS LYS ASN PRO SER SEQRES 4 A 76 GLU ASP ALA LEU VAL GLU ASN ASN ARG LEU ILE VAL GLU SEQRES 5 A 76 HIS ASN ALA ILE ILE VAL GLU ASN ASN ARG ILE ILE ALA SEQRES 6 A 76 ALA VAL LEU GLU LEU ILE VAL ARG ALA ILE LYS SEQRES 1 B 76 GLY SER GLU TYR GLU ILE ARG LYS ALA LEU GLU GLU LEU SEQRES 2 B 76 LYS ALA SER THR ALA GLU LEU LYS ARG ALA THR ALA SER SEQRES 3 B 76 LEU ARG ALA SER THR GLU GLU LEU LYS LYS ASN PRO SER SEQRES 4 B 76 GLU ASP ALA LEU VAL GLU ASN ASN ARG LEU ILE VAL GLU SEQRES 5 B 76 HIS ASN ALA ILE ILE VAL GLU ASN ASN ARG ILE ILE ALA SEQRES 6 B 76 ALA VAL LEU GLU LEU ILE VAL ARG ALA ILE LYS SEQRES 1 C 76 GLY SER GLU TYR GLU ILE ARG LYS ALA LEU GLU GLU LEU SEQRES 2 C 76 LYS ALA SER THR ALA GLU LEU LYS ARG ALA THR ALA SER SEQRES 3 C 76 LEU ARG ALA SER THR GLU GLU LEU LYS LYS ASN PRO SER SEQRES 4 C 76 GLU ASP ALA LEU VAL GLU ASN ASN ARG LEU ILE VAL GLU SEQRES 5 C 76 HIS ASN ALA ILE ILE VAL GLU ASN ASN ARG ILE ILE ALA SEQRES 6 C 76 ALA VAL LEU GLU LEU ILE VAL ARG ALA ILE LYS FORMUL 4 HOH *161(H2 O) HELIX 1 AA1 SER A 1 ASN A 36 1 36 HELIX 2 AA2 SER A 38 LYS A 75 1 38 HELIX 3 AA3 SER B 1 ASN B 36 1 36 HELIX 4 AA4 SER B 38 LYS B 75 1 38 HELIX 5 AA5 SER C 1 ASN C 36 1 36 HELIX 6 AA6 SER C 38 LYS C 75 1 38 CRYST1 57.618 33.281 114.455 90.00 99.56 90.00 C 1 2 1 12 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 0.017356 0.000000 0.002922 0.00000 SCALE2 0.000000 0.030047 0.000000 0.00000 SCALE3 0.000000 0.000000 0.008860 0.00000