HEADER TRANSFERASE 02-FEB-99 1B8N TITLE PURINE NUCLEOSIDE PHOSPHORYLASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: PURINE NUCLEOSIDE PHOSPHORYLASE; COMPND 3 CHAIN: A; COMPND 4 EC: 2.4.2.1; COMPND 5 OTHER_DETAILS: COMPLEXED WITH TRANSITION-STATE ANALOGUE 1,4-DIDEOXY- COMPND 6 1,4-IMINO-1-(S)-(9-DEAZAGUANIN-9-YL)-D-RIBITOL SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BOS TAURUS; SOURCE 3 ORGANISM_COMMON: CATTLE; SOURCE 4 ORGANISM_TAXID: 9913; SOURCE 5 ORGAN: SPLEEN KEYWDS PENTOSYLTRANSFERASE, PURINE NUCLEOSIDE PHOSPHORYLASE, TRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR A.A.FEDOROV,G.A.KICSKA,E.V.FEDOROV,B.V.STROKOPYTOV,P.C.TYLER, AUTHOR 2 R.H.FURNEAUX,V.L.SCHRAMM,S.C.ALMO REVDAT 8 09-AUG-23 1B8N 1 REMARK LINK REVDAT 7 30-OCT-19 1B8N 1 JRNL REVDAT 6 13-JUL-11 1B8N 1 VERSN REVDAT 5 24-FEB-09 1B8N 1 VERSN REVDAT 4 21-DEC-04 1B8N 1 JRNL REMARK REVDAT 3 27-MAR-00 1B8N 3 HEADER DBREF ATOM REVDAT 2 16-FEB-99 1B8N 1 REMARK REVDAT 1 08-FEB-99 1B8N 0 JRNL AUTH G.A.KICSKA,P.C.TYLER,G.B.EVANS,R.H.FURNEAUX,W.SHI, JRNL AUTH 2 A.A.FEDOROV,A.LEWANDOWICZ,S.M.CAHILL,S.C.ALMO,V.L.SCHRAMM JRNL TITL ATOMIC DISSECTION OF THE HYDROGEN BOND NETWORK FOR JRNL TITL 2 TRANSITION-STATE ANALOGUE BINDING TO PURINE NUCLEOSIDE JRNL TITL 3 PHOSPHORYLASE JRNL REF BIOCHEMISTRY V. 41 14489 2002 JRNL REFN ISSN 0006-2960 JRNL PMID 12463747 JRNL DOI 10.1021/BI026636F REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH C.MAO,W.J.COOK,M.ZHOU,A.A.FEDEROV,S.C.ALMO,S.E.EALICK REMARK 1 TITL CALF SPLEEN PURINE NUCLEOSIDE PHOSPHORYLASE COMPLEXED WITH REMARK 1 TITL 2 SUBSTRATES AND SUBSTRATE ANALOGUES. REMARK 1 REF BIOCHEMISTRY V. 37 7135 1998 REMARK 1 REFN ISSN 0006-2960 REMARK 1 PMID 9585525 REMARK 1 DOI 10.1021/BI9723919 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.851 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 8.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 86.8 REMARK 3 NUMBER OF REFLECTIONS : 14374 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 SET) : 0.164 REMARK 3 FREE R VALUE : 0.246 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 8 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.09 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 76.80 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1173 REMARK 3 BIN R VALUE (WORKING SET) : 0.2410 REMARK 3 BIN FREE R VALUE : 0.2960 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.00 REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2182 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 26 REMARK 3 SOLVENT ATOMS : 145 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 26.90 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 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : NULL REMARK 3 ESD FROM C-V SIGMAA (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.010 REMARK 3 BOND ANGLES (DEGREES) : 1.500 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 24.60 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.370 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : 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 NCS MODEL : NULL REMARK 3 REMARK 3 NCS RESTRAINTS. RMS SIGMA/WEIGHT REMARK 3 GROUP 1 POSITIONAL (A) : NULL ; NULL REMARK 3 GROUP 1 B-FACTOR (A**2) : NULL ; NULL REMARK 3 REMARK 3 PARAMETER FILE 1 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : PARAM11.DNA REMARK 3 PARAMETER FILE 3 : NULL REMARK 3 TOPOLOGY FILE 1 : TOPHCSDX.PRO REMARK 3 TOPOLOGY FILE 2 : TOPH11.DNA REMARK 3 TOPOLOGY FILE 3 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1B8N COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 02-FEB-99. REMARK 100 THE DEPOSITION ID IS D_1000000419. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 15-OCT-98 REMARK 200 TEMPERATURE (KELVIN) : 140 REMARK 200 PH : 8.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : X9B REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.04019 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 : 16237 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.9 REMARK 200 DATA REDUNDANCY : 4.000 REMARK 200 R MERGE (I) : 0.08000 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 20.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.00 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.09 REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : 0.49000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 4.100 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: PDB ENTRY 1PBN REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 43.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.22 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 8.0 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 3 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 5555 Z,X,Y REMARK 290 6555 Z+1/2,-X+1/2,-Y REMARK 290 7555 -Z+1/2,-X,Y+1/2 REMARK 290 8555 -Z,X+1/2,-Y+1/2 REMARK 290 9555 Y,Z,X REMARK 290 10555 -Y,Z+1/2,-X+1/2 REMARK 290 11555 Y+1/2,-Z+1/2,-X REMARK 290 12555 -Y+1/2,-Z,X+1/2 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 45.16000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 45.16000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 45.16000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 45.16000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 45.16000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 45.16000 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 45.16000 REMARK 290 SMTRY2 6 -1.000000 0.000000 0.000000 45.16000 REMARK 290 SMTRY3 6 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY1 7 0.000000 0.000000 -1.000000 45.16000 REMARK 290 SMTRY2 7 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 1.000000 0.000000 45.16000 REMARK 290 SMTRY1 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY2 8 1.000000 0.000000 0.000000 45.16000 REMARK 290 SMTRY3 8 0.000000 -1.000000 0.000000 45.16000 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 45.16000 REMARK 290 SMTRY3 10 -1.000000 0.000000 0.000000 45.16000 REMARK 290 SMTRY1 11 0.000000 1.000000 0.000000 45.16000 REMARK 290 SMTRY2 11 0.000000 0.000000 -1.000000 45.16000 REMARK 290 SMTRY3 11 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY1 12 0.000000 -1.000000 0.000000 45.16000 REMARK 290 SMTRY2 12 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY3 12 1.000000 0.000000 0.000000 45.16000 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1, 2 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 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 9770 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 28000 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -70.0 KCAL/MOL 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 350 BIOMT1 2 0.000000 0.000000 1.000000 -135.48000 REMARK 350 BIOMT2 2 -1.000000 0.000000 0.000000 45.16000 REMARK 350 BIOMT3 2 0.000000 -1.000000 0.000000 180.64000 REMARK 350 BIOMT1 3 0.000000 -1.000000 0.000000 45.16000 REMARK 350 BIOMT2 3 0.000000 0.000000 -1.000000 180.64000 REMARK 350 BIOMT3 3 1.000000 0.000000 0.000000 135.48000 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 1 REMARK 465 ALA A 280 REMARK 465 SER A 281 REMARK 465 ILE A 282 REMARK 465 PRO A 283 REMARK 465 VAL A 284 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 ASN A 55 -12.70 64.36 REMARK 500 ASP A 167 116.06 -33.98 REMARK 500 THR A 221 -59.59 66.78 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 598 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 305 O REMARK 620 2 HOH A 321 O 87.7 REMARK 620 3 HOH A 327 O 93.7 170.4 REMARK 620 4 HOH A 331 O 104.8 96.8 92.1 REMARK 620 5 HOH A 341 O 170.5 88.5 88.7 84.2 REMARK 620 6 HOH A 357 O 92.5 81.3 89.1 162.5 78.3 REMARK 620 N 1 2 3 4 5 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MG A 598 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 599 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE IMG A 600 DBREF 1B8N A 1 284 UNP P55859 PNPH_BOVIN 1 284 SEQRES 1 A 284 MET GLN ASN GLY TYR THR TYR GLU ASP TYR GLN ASP THR SEQRES 2 A 284 ALA LYS TRP LEU LEU SER HIS THR GLU GLN ARG PRO GLN SEQRES 3 A 284 VAL ALA VAL ILE CYS GLY SER GLY LEU GLY GLY LEU VAL SEQRES 4 A 284 ASN LYS LEU THR GLN ALA GLN THR PHE ASP TYR SER GLU SEQRES 5 A 284 ILE PRO ASN PHE PRO GLU SER THR VAL PRO GLY HIS ALA SEQRES 6 A 284 GLY ARG LEU VAL PHE GLY ILE LEU ASN GLY ARG ALA CYS SEQRES 7 A 284 VAL MET MET GLN GLY ARG PHE HIS MET TYR GLU GLY TYR SEQRES 8 A 284 PRO PHE TRP LYS VAL THR PHE PRO VAL ARG VAL PHE ARG SEQRES 9 A 284 LEU LEU GLY VAL GLU THR LEU VAL VAL THR ASN ALA ALA SEQRES 10 A 284 GLY GLY LEU ASN PRO ASN PHE GLU VAL GLY ASP ILE MET SEQRES 11 A 284 LEU ILE ARG ASP HIS ILE ASN LEU PRO GLY PHE SER GLY SEQRES 12 A 284 GLU ASN PRO LEU ARG GLY PRO ASN GLU GLU ARG PHE GLY SEQRES 13 A 284 VAL ARG PHE PRO ALA MET SER ASP ALA TYR ASP ARG ASP SEQRES 14 A 284 MET ARG GLN LYS ALA HIS SER THR TRP LYS GLN MET GLY SEQRES 15 A 284 GLU GLN ARG GLU LEU GLN GLU GLY THR TYR VAL MET LEU SEQRES 16 A 284 GLY GLY PRO ASN PHE GLU THR VAL ALA GLU CYS ARG LEU SEQRES 17 A 284 LEU ARG ASN LEU GLY ALA ASP ALA VAL GLY MET SER THR SEQRES 18 A 284 VAL PRO GLU VAL ILE VAL ALA ARG HIS CYS GLY LEU ARG SEQRES 19 A 284 VAL PHE GLY PHE SER LEU ILE THR ASN LYS VAL ILE MET SEQRES 20 A 284 ASP TYR GLU SER GLN GLY LYS ALA ASN HIS GLU GLU VAL SEQRES 21 A 284 LEU GLU ALA GLY LYS GLN ALA ALA GLN LYS LEU GLU GLN SEQRES 22 A 284 PHE VAL SER LEU LEU MET ALA SER ILE PRO VAL HET MG A 598 1 HET PO4 A 599 5 HET IMG A 600 20 HETNAM MG MAGNESIUM ION HETNAM PO4 PHOSPHATE ION HETNAM IMG 1,4-DIDEOXY-1,4-IMINO-1-(S)-(9-DEAZAGUANIN-9-YL)-D- HETNAM 2 IMG RIBITOL HETSYN IMG IMMUCILLIN-G FORMUL 2 MG MG 2+ FORMUL 3 PO4 O4 P 3- FORMUL 4 IMG C11 H15 N5 O4 FORMUL 5 HOH *145(H2 O) HELIX 1 1 TYR A 7 HIS A 20 1 14 HELIX 2 2 GLY A 36 VAL A 39 5 4 HELIX 3 3 TYR A 50 GLU A 52 5 3 HELIX 4 4 MET A 87 GLU A 89 5 3 HELIX 5 5 PHE A 93 VAL A 96 1 4 HELIX 6 6 PHE A 98 LEU A 106 1 9 HELIX 7 7 LEU A 138 SER A 142 1 5 HELIX 8 8 ARG A 168 MET A 181 1 14 HELIX 9 9 VAL A 203 LEU A 212 1 10 HELIX 10 10 VAL A 222 HIS A 230 1 9 HELIX 11 11 HIS A 257 LEU A 277 1 21 SHEET 1 A 9 ALA A 216 GLY A 218 0 SHEET 2 A 9 GLN A 188 MET A 194 1 N VAL A 193 O ALA A 216 SHEET 3 A 9 ILE A 129 ASN A 137 1 N LEU A 131 O GLN A 188 SHEET 4 A 9 ARG A 234 LYS A 244 -1 N SER A 239 O MET A 130 SHEET 5 A 9 THR A 110 GLY A 119 1 N LEU A 111 O ARG A 234 SHEET 6 A 9 VAL A 27 CYS A 31 1 N ALA A 28 O THR A 110 SHEET 7 A 9 ARG A 76 GLN A 82 1 N VAL A 79 O VAL A 27 SHEET 8 A 9 ARG A 67 LEU A 73 -1 N LEU A 73 O ARG A 76 SHEET 9 A 9 GLN A 46 ASP A 49 -1 N PHE A 48 O LEU A 68 LINK O HOH A 305 MG MG A 598 1555 1555 2.23 LINK O HOH A 321 MG MG A 598 1555 1555 2.21 LINK O HOH A 327 MG MG A 598 1555 1555 2.22 LINK O HOH A 331 MG MG A 598 1555 1555 2.29 LINK O HOH A 341 MG MG A 598 1555 1555 2.27 LINK O HOH A 357 MG MG A 598 1555 1555 2.20 CISPEP 1 GLY A 197 PRO A 198 0 0.34 SITE 1 AC1 6 HOH A 305 HOH A 321 HOH A 327 HOH A 331 SITE 2 AC1 6 HOH A 341 HOH A 357 SITE 1 AC2 10 GLY A 32 SER A 33 HIS A 64 ARG A 84 SITE 2 AC2 10 HIS A 86 ASN A 115 ALA A 116 SER A 220 SITE 3 AC2 10 HOH A 315 IMG A 600 SITE 1 AC3 18 HIS A 86 TYR A 88 ALA A 116 GLY A 118 SITE 2 AC3 18 LEU A 195 PHE A 200 GLU A 201 VAL A 217 SITE 3 AC3 18 GLY A 218 MET A 219 THR A 242 ASN A 243 SITE 4 AC3 18 VAL A 245 HIS A 257 VAL A 260 HOH A 315 SITE 5 AC3 18 HOH A 348 PO4 A 599 CRYST1 90.320 90.320 90.320 90.00 90.00 90.00 P 21 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 0.011072 0.000000 0.000000 0.00000 SCALE2 0.000000 0.011072 0.000000 0.00000 SCALE3 0.000000 0.000000 0.011072 0.00000