HEADER SIGNALING PROTEIN 11-JUL-22 8DNK TITLE CRYSTAL STRUCTURE OF HUMAN KRAS G12C COVALENTLY BOUND WITH TAIHO TITLE 2 WO2020/085493A1 COMPOUND 6 COMPND MOL_ID: 1; COMPND 2 MOLECULE: ISOFORM 2B OF GTPASE KRAS; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: K-RAS 2,KI-RAS,C-K-RAS,C-KI-RAS; COMPND 5 EC: 3.6.5.2; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES; COMPND 8 OTHER_DETAILS: G12C VARIANT SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 VARIANT: VAR_006839 G12C; SOURCE 6 GENE: KRAS, KRAS2, RASK2; SOURCE 7 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 8 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS INHIBITOR, GTPASE, SIGNALING PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR C.MOHR REVDAT 3 18-OCT-23 8DNK 1 REMARK REVDAT 2 05-OCT-22 8DNK 1 JRNL REVDAT 1 17-AUG-22 8DNK 0 JRNL AUTH K.ZHU,C.LI,K.Y.WU,C.MOHR,X.LI,B.LANMAN JRNL TITL MODELING RECEPTOR FLEXIBILITY IN THE STRUCTURE-BASED DESIGN JRNL TITL 2 OF KRAS G12C INHIBITORS. JRNL REF J.COMPUT.AIDED MOL.DES. V. 36 591 2022 JRNL REFN ESSN 1573-4951 JRNL PMID 35930206 JRNL DOI 10.1007/S10822-022-00467-0 REMARK 2 REMARK 2 RESOLUTION. 2.23 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC V5.8.0267 REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.23 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 30.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 3 NUMBER OF REFLECTIONS : 11916 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : 0.184 REMARK 3 R VALUE (WORKING SET) : 0.181 REMARK 3 FREE R VALUE : 0.235 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.200 REMARK 3 FREE R VALUE TEST SET COUNT : 659 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1351 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 68 REMARK 3 SOLVENT ATOMS : 42 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 39.26 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.00000 REMARK 3 B22 (A**2) : 0.00000 REMARK 3 B33 (A**2) : 0.00000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.203 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.188 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.134 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 5.700 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : NULL ; NULL REMARK 3 ANGLE DISTANCE (A) : NULL ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : NULL ; NULL REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : NULL ; NULL REMARK 3 STAGGERED (DEGREES) : NULL ; NULL REMARK 3 TRANSVERSE (DEGREES) : NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : NULL ; NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING REMARK 3 POSITIONS U VALUES : REFINED INDIVIDUALLY REMARK 4 REMARK 4 8DNK COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 04-AUG-22. REMARK 100 THE DEPOSITION ID IS D_1000264983. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 18-DEC-20 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 8.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : ALS REMARK 200 BEAMLINE : 5.0.2 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.99999 REMARK 200 MONOCHROMATOR : DOUBLE-CRYSTAL, SI(111) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : PIXEL REMARK 200 DETECTOR MANUFACTURER : DECTRIS PILATUS3 6M REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DIALS V1.14.3 REMARK 200 DATA SCALING SOFTWARE : XIA2 V0.5.902 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 12603 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.230 REMARK 200 RESOLUTION RANGE LOW (A) : 64.480 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 100.0 REMARK 200 DATA REDUNDANCY : 38.40 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 11.8000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.23 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.27 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 40.10 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 2.400 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHASER V2.8.3 REMARK 200 STARTING MODEL: 6OIM REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 58.85 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.99 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1 M TRIS PH 8.5, 2.0 M AMMONIUM REMARK 280 SULFATE, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 2 3 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,Y,-Z REMARK 290 4555 X,-Y,-Z REMARK 290 5555 Z,X,Y REMARK 290 6555 Z,-X,-Y REMARK 290 7555 -Z,-X,Y REMARK 290 8555 -Z,X,-Y REMARK 290 9555 Y,Z,X REMARK 290 10555 -Y,Z,-X REMARK 290 11555 Y,-Z,-X REMARK 290 12555 -Y,-Z,X 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 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY2 5 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY1 6 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY2 6 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY1 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY2 7 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY1 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY2 8 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY1 9 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 9 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY3 9 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY1 10 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 10 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY3 10 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY1 11 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 11 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY3 11 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY1 12 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 12 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY3 12 1.000000 0.000000 0.000000 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: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: 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 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH A 442 LIES ON A SPECIAL POSITION. 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 MET A -14 REMARK 465 LYS A -13 REMARK 465 HIS A -12 REMARK 465 HIS A -11 REMARK 465 HIS A -10 REMARK 465 HIS A -9 REMARK 465 HIS A -8 REMARK 465 HIS A -7 REMARK 465 HIS A -6 REMARK 465 LEU A -5 REMARK 465 VAL A -4 REMARK 465 PRO A -3 REMARK 465 ARG A -2 REMARK 465 GLY A -1 REMARK 465 LYS A 169 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 ARG A 149 -3.52 75.61 REMARK 500 ARG A 149 -3.37 75.58 REMARK 500 REMARK 500 REMARK: NULL REMARK 620 REMARK 620 METAL COORDINATION REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MG A 301 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 SER A 17 OG REMARK 620 2 GDP A 302 O2B 93.0 REMARK 620 3 HOH A 401 O 87.0 94.5 REMARK 620 4 HOH A 405 O 92.1 83.2 177.6 REMARK 620 5 HOH A 406 O 173.5 89.2 86.7 94.2 REMARK 620 6 HOH A 407 O 90.9 168.8 96.1 86.2 88.1 REMARK 620 N 1 2 3 4 5 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 8DNI RELATED DB: PDB REMARK 900 RELATED ID: 8DNJ RELATED DB: PDB DBREF 8DNK A 1 169 UNP P01116-2 RASK_HUMAN 1 169 SEQADV 8DNK MET A -14 UNP P01116-2 INITIATING METHIONINE SEQADV 8DNK LYS A -13 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK HIS A -12 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK HIS A -11 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK HIS A -10 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK HIS A -9 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK HIS A -8 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK HIS A -7 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK HIS A -6 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK LEU A -5 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK VAL A -4 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK PRO A -3 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK ARG A -2 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK GLY A -1 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK SER A 0 UNP P01116-2 EXPRESSION TAG SEQADV 8DNK CYS A 12 UNP P01116-2 GLY 12 VARIANT SEQADV 8DNK SER A 51 UNP P01116-2 CYS 51 ENGINEERED MUTATION SEQADV 8DNK LEU A 80 UNP P01116-2 CYS 80 ENGINEERED MUTATION SEQADV 8DNK SER A 118 UNP P01116-2 CYS 118 ENGINEERED MUTATION SEQRES 1 A 184 MET LYS HIS HIS HIS HIS HIS HIS HIS LEU VAL PRO ARG SEQRES 2 A 184 GLY SER MET THR GLU TYR LYS LEU VAL VAL VAL GLY ALA SEQRES 3 A 184 CYS GLY VAL GLY LYS SER ALA LEU THR ILE GLN LEU ILE SEQRES 4 A 184 GLN ASN HIS PHE VAL ASP GLU TYR ASP PRO THR ILE GLU SEQRES 5 A 184 ASP SER TYR ARG LYS GLN VAL VAL ILE ASP GLY GLU THR SEQRES 6 A 184 SER LEU LEU ASP ILE LEU ASP THR ALA GLY GLN GLU GLU SEQRES 7 A 184 TYR SER ALA MET ARG ASP GLN TYR MET ARG THR GLY GLU SEQRES 8 A 184 GLY PHE LEU LEU VAL PHE ALA ILE ASN ASN THR LYS SER SEQRES 9 A 184 PHE GLU ASP ILE HIS HIS TYR ARG GLU GLN ILE LYS ARG SEQRES 10 A 184 VAL LYS ASP SER GLU ASP VAL PRO MET VAL LEU VAL GLY SEQRES 11 A 184 ASN LYS SER ASP LEU PRO SER ARG THR VAL ASP THR LYS SEQRES 12 A 184 GLN ALA GLN ASP LEU ALA ARG SER TYR GLY ILE PRO PHE SEQRES 13 A 184 ILE GLU THR SER ALA LYS THR ARG GLN GLY VAL ASP ASP SEQRES 14 A 184 ALA PHE TYR THR LEU VAL ARG GLU ILE ARG LYS HIS LYS SEQRES 15 A 184 GLU LYS HET MG A 301 1 HET GDP A 302 28 HET U50 A 303 34 HET SO4 A 304 5 HETNAM MG MAGNESIUM ION HETNAM GDP GUANOSINE-5'-DIPHOSPHATE HETNAM U50 2-{[(5-TERT-BUTYL-6-CHLORO-1H-INDAZOL-3-YL) HETNAM 2 U50 AMINO]METHYL}-4-CHLORO-1-METHYL-N-(1- HETNAM 3 U50 PROPANOYLAZETIDIN-3-YL)-1H-IMIDAZOLE-5-CARBOXAMIDE HETNAM SO4 SULFATE ION FORMUL 2 MG MG 2+ FORMUL 3 GDP C10 H15 N5 O11 P2 FORMUL 4 U50 C23 H29 CL2 N7 O2 FORMUL 5 SO4 O4 S 2- FORMUL 6 HOH *42(H2 O) HELIX 1 AA1 GLY A 15 ASN A 26 1 12 HELIX 2 AA2 SER A 65 THR A 74 1 10 HELIX 3 AA3 ASN A 86 ASP A 105 1 20 HELIX 4 AA4 ASP A 126 GLY A 138 1 13 HELIX 5 AA5 GLY A 151 GLU A 168 1 18 SHEET 1 AA1 6 ASP A 38 ILE A 46 0 SHEET 2 AA1 6 GLU A 49 ASP A 57 -1 O ILE A 55 N TYR A 40 SHEET 3 AA1 6 THR A 2 VAL A 9 1 N VAL A 8 O LEU A 56 SHEET 4 AA1 6 GLY A 77 ALA A 83 1 O LEU A 79 N VAL A 9 SHEET 5 AA1 6 MET A 111 ASN A 116 1 O VAL A 112 N LEU A 80 SHEET 6 AA1 6 PHE A 141 GLU A 143 1 O ILE A 142 N GLY A 115 LINK SG CYS A 12 C23 U50 A 303 1555 1555 1.81 LINK OG SER A 17 MG MG A 301 1555 1555 2.14 LINK MG MG A 301 O2B GDP A 302 1555 1555 2.11 LINK MG MG A 301 O HOH A 401 1555 1555 2.14 LINK MG MG A 301 O HOH A 405 1555 1555 2.16 LINK MG MG A 301 O HOH A 406 1555 1555 2.16 LINK MG MG A 301 O HOH A 407 1555 1555 2.14 CRYST1 91.181 91.181 91.181 90.00 90.00 90.00 P 2 3 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 0.010967 0.000000 0.000000 0.00000 SCALE2 0.000000 0.010967 0.000000 0.00000 SCALE3 0.000000 0.000000 0.010967 0.00000