PDB Short entry for 1OBG HEADER LIGASE 30-JAN-03 1OBG TITLE SAICAR-SYNTHASE COMPLEXED WITH ATP COMPND MOL_ID: 1; COMPND 2 MOLECULE: PHOSPHORIBOSYLAMIDOIMIDAZOLE- SUCCINOCARBOXAMIDE SYNTHASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: SAICAR SYNTHETASE; COMPND 5 EC: 6.3.2.6 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SACCHAROMYCES CEREVISIAE; SOURCE 3 ORGANISM_COMMON: BAKER'S YEAST; SOURCE 4 ORGANISM_TAXID: 4932 KEYWDS SYNTHETASE, ATP BINDING PROTEIN, KEYWDS 2 PHOSPHORIBOSYLAMINOIMIDAZOLESUCCINOCARBOXAMIDE (SAICAR) SYNTHASE, KEYWDS 3 PURINE BIOSYNTHESIS, LIGASE EXPDTA X-RAY DIFFRACTION AUTHOR S.V.ANTONYUK,A.I.GREBENKO,V.M.LEVDIKOV,D.V.URUSOVA,W.R.MELIK-ADAMYAN, AUTHOR 2 V.S.LAMZIN,K.WILSON REVDAT 5 13-DEC-23 1OBG 1 REMARK LINK REVDAT 4 24-JUL-19 1OBG 1 REMARK LINK REVDAT 3 24-FEB-09 1OBG 1 VERSN REVDAT 2 10-DEC-03 1OBG 1 REMARK REVDAT 1 06-MAR-03 1OBG 0 JRNL AUTH S.V.ANTONYUK,A.I.GREBENKO,V.M.LEVDIKOV,D.V.URUSOVA, JRNL AUTH 2 W.R.MELIK-ADAMYAN,V.S.LAMZIN,K.WILSON JRNL TITL X-RAY STRUCTURE OF SAICAR-SYNTHASE COMPLEXED WITH ATP JRNL REF KRISTALLOGRAFIYA V. 46 620 2001 JRNL REFN ISSN 0023-4761 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH V.M.LEVDIKOV,V.V.BARYNIN,A.I.GREBENKO,W.R.MELIK-ADAMYAN, REMARK 1 AUTH 2 V.S.LAMZIN,K.S.WILSON REMARK 1 TITL THE STRUCTURE OF SAICAR SYNTHASE: AN ENZYME IN THE DE NOVO REMARK 1 TITL 2 PATHWAY OF PURINE NUCLEOTIDE BIOSYNTHESIS REMARK 1 REF STRUCTURE V. 6 363 1998 REMARK 1 REFN ISSN 0969-2126 REMARK 1 PMID 9551557 REMARK 1 DOI 10.1016/S0969-2126(98)00038-0 REMARK 2 REMARK 2 RESOLUTION. 2.05 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 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) : 2.05 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 13.80 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 98.5 REMARK 3 NUMBER OF REFLECTIONS : 23868 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) : 0.168 REMARK 3 R VALUE (WORKING SET) : 0.166 REMARK 3 FREE R VALUE : 0.206 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.100 REMARK 3 FREE R VALUE TEST SET COUNT : 1025 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2431 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 57 REMARK 3 SOLVENT ATOMS : 273 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 16.60 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 25.14 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.25000 REMARK 3 B22 (A**2) : -0.07000 REMARK 3 B33 (A**2) : -0.18000 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): 0.161 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.146 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.095 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 3.469 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: NULL REMARK 4 REMARK 4 1OBG COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 30-JAN-03. REMARK 100 THE DEPOSITION ID IS D_1290012071. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-FEB-97 REMARK 200 TEMPERATURE (KELVIN) : 297.0 REMARK 200 PH : 4.50 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : EMBL/DESY, HAMBURG REMARK 200 BEAMLINE : X31 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.98 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 25206 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.050 REMARK 200 RESOLUTION RANGE LOW (A) : 13.820 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.5 REMARK 200 DATA REDUNDANCY : 4.000 REMARK 200 R MERGE (I) : 0.07000 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 17.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.05 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.09 REMARK 200 COMPLETENESS FOR SHELL (%) : 98.5 REMARK 200 DATA REDUNDANCY IN SHELL : 4.00 REMARK 200 R MERGE FOR SHELL (I) : 0.19000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 3.600 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: PDB ENTRY 1A48 REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 51.01 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.53 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 40MM ASP. ASID, 10MM MGCL2, 25MM ATP, REMARK 280 2.26 M (NH4)2(SO4), 5, PH 4.50 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 34.88500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 38.00000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 37.09500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 38.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 34.88500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 37.09500 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: MONOMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: MONOMERIC REMARK 350 SOFTWARE USED: PQS 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 400 REMARK 400 COMPOUND REMARK 400 CATALYSES ATP + 5-AMINO-1-(5-PHOSPHO-D- REMARK 400 RIBOSYL)IMIDAZOLE-4-CARBOXYLATE + L-ASPARTATE = ADP + REMARK 400 PHOSPHATE + (S)-2-[5-AMINO-1-(5-PHOSPHO-D-RIBOSYL) REMARK 400 IMIDAZOLE-4-CARBOXAMIDO]SUCCINATE. PART OF THE PURINE REMARK 400 BIOSYNTHESIS PATHWAY. 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 LYS A 66 CG 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 NH2 ARG A 21 O1P AMP A 307 2.06 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 ASP A 22 CB - CG - OD2 ANGL. DEV. = 5.7 DEGREES REMARK 500 ASP A 27 CB - CG - OD2 ANGL. DEV. = 6.5 DEGREES REMARK 500 ASP A 171 CB - CG - OD2 ANGL. DEV. = 6.5 DEGREES REMARK 500 LEU A 182 CA - CB - CG ANGL. DEV. = 16.2 DEGREES REMARK 500 ASP A 204 CB - CG - OD2 ANGL. DEV. = 5.7 DEGREES REMARK 500 ASP A 259 CB - CG - OD2 ANGL. DEV. = 7.0 DEGREES REMARK 500 ASP A 265 CB - CG - OD2 ANGL. DEV. = 5.7 DEGREES 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 104 -2.43 75.37 REMARK 500 VAL A 232 -169.33 -121.48 REMARK 500 ASP A 233 -159.33 58.04 REMARK 500 SER A 305 -168.20 -164.66 REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A2036 DISTANCE = 7.59 ANGSTROMS REMARK 525 HOH A2056 DISTANCE = 5.99 ANGSTROMS 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 310 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP A 239 OD2 REMARK 620 2 ASP A 259 OD1 156.3 REMARK 620 3 TYR A 292 OH 125.7 72.2 REMARK 620 N 1 2 REMARK 700 REMARK 700 SHEET REMARK 700 THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN REMARK 700 ORDER TO REPRESENT THIS FEATURE IN THE SHEET RECORDS BELOW, REMARK 700 TWO SHEETS ARE DEFINED. 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 308 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 310 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 311 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMP A 307 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC5 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMP A 309 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1A48 RELATED DB: PDB REMARK 900 SAICAR SYNTHASE REMARK 900 RELATED ID: 1OBD RELATED DB: PDB REMARK 900 SAICAR-SYNTHASE COMPLEXED WITH ATP DBREF 1OBG A 2 306 UNP P27616 PUR7_YEAST 2 306 SEQRES 1 A 305 SER ILE THR LYS THR GLU LEU ASP GLY ILE LEU PRO LEU SEQRES 2 A 305 VAL ALA ARG GLY LYS VAL ARG ASP ILE TYR GLU VAL ASP SEQRES 3 A 305 ALA GLY THR LEU LEU PHE VAL ALA THR ASP ARG ILE SER SEQRES 4 A 305 ALA TYR ASP VAL ILE MET GLU ASN SER ILE PRO GLU LYS SEQRES 5 A 305 GLY ILE LEU LEU THR LYS LEU SER GLU PHE TRP PHE LYS SEQRES 6 A 305 PHE LEU SER ASN ASP VAL ARG ASN HIS LEU VAL ASP ILE SEQRES 7 A 305 ALA PRO GLY LYS THR ILE PHE ASP TYR LEU PRO ALA LYS SEQRES 8 A 305 LEU SER GLU PRO LYS TYR LYS THR GLN LEU GLU ASP ARG SEQRES 9 A 305 SER LEU LEU VAL HIS LYS HIS LYS LEU ILE PRO LEU GLU SEQRES 10 A 305 VAL ILE VAL ARG GLY TYR ILE THR GLY SER ALA TRP LYS SEQRES 11 A 305 GLU TYR VAL LYS THR GLY THR VAL HIS GLY LEU LYS GLN SEQRES 12 A 305 PRO GLN GLY LEU LYS GLU SER GLN GLU PHE PRO GLU PRO SEQRES 13 A 305 ILE PHE THR PRO SER THR LYS ALA GLU GLN GLY GLU HIS SEQRES 14 A 305 ASP GLU ASN ILE SER PRO ALA GLN ALA ALA GLU LEU VAL SEQRES 15 A 305 GLY GLU ASP LEU SER ARG ARG VAL ALA GLU LEU ALA VAL SEQRES 16 A 305 LYS LEU TYR SER LYS CYS LYS ASP TYR ALA LYS GLU LYS SEQRES 17 A 305 GLY ILE ILE ILE ALA ASP THR LYS PHE GLU PHE GLY ILE SEQRES 18 A 305 ASP GLU LYS THR ASN GLU ILE ILE LEU VAL ASP GLU VAL SEQRES 19 A 305 LEU THR PRO ASP SER SER ARG PHE TRP ASN GLY ALA SER SEQRES 20 A 305 TYR LYS VAL GLY GLU SER GLN ASP SER TYR ASP LYS GLN SEQRES 21 A 305 PHE LEU ARG ASP TRP LEU THR ALA ASN LYS LEU ASN GLY SEQRES 22 A 305 VAL ASN GLY VAL LYS MET PRO GLN ASP ILE VAL ASP ARG SEQRES 23 A 305 THR ARG ALA LYS TYR ILE GLU ALA TYR GLU THR LEU THR SEQRES 24 A 305 GLY SER LYS TRP SER HIS HET AMP A 307 23 HET SO4 A 308 5 HET AMP A 309 23 HET MG A 310 1 HET SO4 A 311 5 HETNAM AMP ADENOSINE MONOPHOSPHATE HETNAM SO4 SULFATE ION HETNAM MG MAGNESIUM ION FORMUL 2 AMP 2(C10 H14 N5 O7 P) FORMUL 3 SO4 2(O4 S 2-) FORMUL 5 MG MG 2+ FORMUL 7 HOH *273(H2 O) HELIX 1 1 GLU A 52 LEU A 68 1 17 HELIX 2 2 THR A 84 LEU A 89 5 6 HELIX 3 3 PRO A 90 SER A 94 5 5 HELIX 4 4 GLU A 95 GLU A 103 1 9 HELIX 5 5 THR A 126 GLY A 137 1 12 HELIX 6 6 SER A 175 GLY A 184 1 10 HELIX 7 7 GLY A 184 GLY A 210 1 27 HELIX 8 8 LYS A 260 ASN A 270 1 11 HELIX 9 9 PRO A 281 GLY A 301 1 21 SHEET 1 AA 4 LEU A 14 ARG A 17 0 SHEET 2 AA 4 ARG A 21 ASP A 27 -1 O ILE A 23 N VAL A 15 SHEET 3 AA 4 THR A 30 ALA A 35 -1 O THR A 30 N VAL A 26 SHEET 4 AA 4 SER A 106 HIS A 110 -1 O LEU A 107 N PHE A 33 SHEET 1 AB 2 SER A 40 ALA A 41 0 SHEET 2 AB 2 VAL A 44 ILE A 45 -1 O VAL A 44 N ALA A 41 SHEET 1 AC 4 ARG A 73 ASN A 74 0 SHEET 2 AC 4 ILE A 229 LEU A 231 1 O ILE A 229 N ARG A 73 SHEET 3 AC 4 PHE A 220 ILE A 222 -1 O GLY A 221 N ILE A 230 SHEET 4 AC 4 LYS A 113 LEU A 114 -1 O LYS A 113 N ILE A 222 SHEET 1 AD 3 GLU A 153 PHE A 159 0 SHEET 2 AD 3 LEU A 117 TYR A 124 -1 O ARG A 122 N ILE A 158 SHEET 3 AD 3 SER A 162 THR A 163 -1 O SER A 162 N GLU A 118 SHEET 1 AE 4 GLU A 153 PHE A 159 0 SHEET 2 AE 4 LEU A 117 TYR A 124 -1 O ARG A 122 N ILE A 158 SHEET 3 AE 4 ILE A 211 PHE A 218 -1 O ALA A 214 N GLY A 123 SHEET 4 AE 4 SER A 241 ASN A 245 -1 O ARG A 242 N ALA A 214 SHEET 1 AF 2 THR A 138 VAL A 139 0 SHEET 2 AF 2 LEU A 142 LYS A 143 -1 O LEU A 142 N VAL A 139 LINK O2P AMP A 307 O4 SO4 A 311 1555 1555 1.89 LINK OD2 ASP A 239 MG MG A 310 1555 1555 2.00 LINK OD1 ASP A 259 MG MG A 310 1555 1555 2.57 LINK OH TYR A 292 MG MG A 310 1555 1555 2.48 SITE 1 AC1 6 ARG A 122 SER A 128 ARG A 242 HOH A2150 SITE 2 AC1 6 HOH A2269 HOH A2270 SITE 1 AC2 4 ASP A 239 ASP A 259 LYS A 260 TYR A 292 SITE 1 AC3 5 GLY A 18 LYS A 19 VAL A 20 ARG A 21 SITE 2 AC3 5 AMP A 307 SITE 1 AC4 16 ARG A 21 ILE A 23 PHE A 33 HIS A 75 SITE 2 AC4 16 HIS A 110 LYS A 111 HIS A 112 LEU A 114 SITE 3 AC4 16 LYS A 164 GLU A 219 VAL A 232 ASP A 233 SITE 4 AC4 16 SO4 A 311 HOH A2264 HOH A2266 HOH A2267 SITE 1 AC5 12 GLU A 62 LEU A 76 VAL A 77 ILE A 79 SITE 2 AC5 12 ILE A 85 SER A 106 LEU A 107 LEU A 108 SITE 3 AC5 12 GLU A 253 HOH A2271 HOH A2272 HOH A2273 CRYST1 69.770 74.190 76.000 90.00 90.00 90.00 P 21 21 21 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 0.014333 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013479 0.000000 0.00000 SCALE3 0.000000 0.000000 0.013158 0.00000