HEADER TRANSFERASE 05-APR-00 1EQM TITLE CRYSTAL STRUCTURE OF BINARY COMPLEX OF 6-HYDROXYMETHYL-7,8- TITLE 2 DIHYDROPTERIN PYROPHOSPHOKINASE WITH ADENOSINE-5'-DIPHOSPHATE COMPND MOL_ID: 1; COMPND 2 MOLECULE: 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN PYROPHOSPHOKINASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: HPPK; COMPND 5 EC: 2.7.6.3; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ESCHERICHIA COLI; SOURCE 3 ORGANISM_TAXID: 562; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 5 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: BL21(DE3); SOURCE 7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PET17B KEYWDS PYROPHOSPHOKINASE, PYROPHOSPHORYL TRANSFER, FOLATE, HPPK, PTERIN, KEYWDS 2 ANTIMICROBIAL AGENT, DRUG DESIGN, SUBSTRATE SPECIFICITY, TRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR B.XIAO,J.BLASZCZYK,X.JI REVDAT 5 30-AUG-23 1EQM 1 AUTHOR JRNL REVDAT 4 09-AUG-23 1EQM 1 REMARK LINK REVDAT 3 24-FEB-09 1EQM 1 VERSN REVDAT 2 07-NOV-01 1EQM 1 JRNL REVDAT 1 05-APR-01 1EQM 0 JRNL AUTH B.XIAO,G.SHI,J.GAO,J.BLASZCZYK,Q.LIU,X.JI,H.YAN JRNL TITL UNUSUAL CONFORMATIONAL CHANGES IN JRNL TITL 2 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN PYROPHOSPHOKINASE AS JRNL TITL 3 REVEALED BY X-RAY CRYSTALLOGRAPHY AND NMR. JRNL REF J.BIOL.CHEM. V. 276 40274 2001 JRNL REFN ISSN 0021-9258 JRNL PMID 11546767 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH B.XIAO,G.SHI,X.CHEN,H.YAN,X.JI REMARK 1 TITL CRYSTAL STRUCTURE OF 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN REMARK 1 TITL 2 PYROPHOSPHOKINASE, A POTENTIAL TARGET FOR THE DEVELOPMENT OF REMARK 1 TITL 3 NOVEL ANTIMICROBIAL AGENTS REMARK 1 REF STRUCTURE V. 7 489 1999 REMARK 1 REFN ISSN 0969-2126 REMARK 1 DOI 10.1016/S0969-2126(99)80065-3 REMARK 2 REMARK 2 RESOLUTION. 1.50 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : SHELXL-97 REMARK 3 AUTHORS : G.M.SHELDRICK REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.50 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 4.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 93.5 REMARK 3 CROSS-VALIDATION METHOD : FREE R REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (NO CUTOFF). REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : 0.190 REMARK 3 FREE R VALUE (NO CUTOFF) : 0.263 REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : 5.084 REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : 1114 REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 21914 REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL FOR DATA WITH F>4SIG(F). REMARK 3 R VALUE (WORKING + TEST SET, F>4SIG(F)) : NULL REMARK 3 R VALUE (WORKING SET, F>4SIG(F)) : 0.176 REMARK 3 FREE R VALUE (F>4SIG(F)) : 0.248 REMARK 3 FREE R VALUE TEST SET SIZE (%, F>4SIG(F)) : 5.218 REMARK 3 FREE R VALUE TEST SET COUNT (F>4SIG(F)) : 855 REMARK 3 TOTAL NUMBER OF REFLECTIONS (F>4SIG(F)) : 16387 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1267 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 33 REMARK 3 SOLVENT ATOMS : 258 REMARK 3 REMARK 3 MODEL REFINEMENT. REMARK 3 OCCUPANCY SUM OF NON-HYDROGEN ATOMS : 1523.0 REMARK 3 OCCUPANCY SUM OF HYDROGEN ATOMS : 0.00 REMARK 3 NUMBER OF DISCRETELY DISORDERED RESIDUES : 3 REMARK 3 NUMBER OF LEAST-SQUARES PARAMETERS : 6411 REMARK 3 NUMBER OF RESTRAINTS : 5634 REMARK 3 REMARK 3 RMS DEVIATIONS FROM RESTRAINT TARGET VALUES. REMARK 3 BOND LENGTHS (A) : 0.007 REMARK 3 ANGLE DISTANCES (A) : 0.022 REMARK 3 SIMILAR DISTANCES (NO TARGET VALUES) (A) : 0.000 REMARK 3 DISTANCES FROM RESTRAINT PLANES (A) : 0.026 REMARK 3 ZERO CHIRAL VOLUMES (A**3) : 0.041 REMARK 3 NON-ZERO CHIRAL VOLUMES (A**3) : 0.045 REMARK 3 ANTI-BUMPING DISTANCE RESTRAINTS (A) : 0.025 REMARK 3 RIGID-BOND ADP COMPONENTS (A**2) : 0.000 REMARK 3 SIMILAR ADP COMPONENTS (A**2) : 0.052 REMARK 3 APPROXIMATELY ISOTROPIC ADPS (A**2) : 0.000 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED: MOEWS AND KRETSINGER, J.MOL.BIOL. 91(1973)201-202 REMARK 3 REMARK 3 STEREOCHEMISTRY TARGET VALUES : ENGH AND HUBER REMARK 3 SPECIAL CASE: NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: LEAST-SQUARES REFINEMENT USING THE REMARK 3 KONNERT-HENDRICKSON CONJUGATE-GRADIENT ALGORITHM REMARK 4 REMARK 4 1EQM COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 07-APR-00. REMARK 100 THE DEPOSITION ID IS D_1000010823. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 23-JUL-98 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 : 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) : 0.99200 REMARK 200 MONOCHROMATOR : SILICON 111 REMARK 200 OPTICS : MIRROR 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 : 23029 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.500 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.7 REMARK 200 DATA REDUNDANCY : 3.600 REMARK 200 R MERGE (I) : 0.08400 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 18.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.50 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.55 REMARK 200 COMPLETENESS FOR SHELL (%) : 85.4 REMARK 200 DATA REDUNDANCY IN SHELL : 3.10 REMARK 200 R MERGE FOR SHELL (I) : 0.58900 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 1.970 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: 1HKA REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 26.40 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.88 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 4000, TRIS-HCL, ACETATE, PH 8.5, REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 292K 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 39.57000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 26.40000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 39.57000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 26.40000 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 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 475 REMARK 475 ZERO OCCUPANCY RESIDUES REMARK 475 THE FOLLOWING RESIDUES WERE MODELED WITH ZERO OCCUPANCY. REMARK 475 THE LOCATION AND PROPERTIES OF THESE RESIDUES MAY NOT REMARK 475 BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 475 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE) REMARK 475 M RES C SSEQI REMARK 475 PRO A 44 REMARK 475 LEU A 45 REMARK 475 GLY A 46 REMARK 475 PRO A 47 REMARK 475 GLN A 48 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 PRO A 43 -157.08 -43.73 REMARK 500 PRO A 44 -138.66 -92.13 REMARK 500 LEU A 45 30.33 -178.22 REMARK 500 PRO A 47 -72.29 -61.86 REMARK 500 GLN A 48 -108.61 -38.28 REMARK 500 ASP A 49 106.61 178.14 REMARK 500 LYS A 85 -109.83 -66.73 REMARK 500 ALA A 86 -113.17 58.81 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 161 MG REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 77 OE2 REMARK 620 2 LEU A 96 O 76.5 REMARK 620 3 ADP A 171 O1B 121.7 110.7 REMARK 620 4 ADP A 171 O1B 90.9 143.7 48.3 REMARK 620 5 ADP A 171 O3B 172.7 110.5 54.5 82.1 REMARK 620 6 ADP A 171 O3B 153.0 129.3 61.6 72.0 21.1 REMARK 620 7 HOH A 419 O 75.7 120.3 128.9 88.0 101.8 82.9 REMARK 620 N 1 2 3 4 5 6 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 161 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE PO4 A 181 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ADP A 171 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1EQ0 RELATED DB: PDB REMARK 900 1EQ0 IS THE SOLUTION STRUCTURE OF BINARY COMPLEX OF HPPK FROM E. REMARK 900 COLI WITH MGAMPPCP. REMARK 900 RELATED ID: 1EQO RELATED DB: PDB REMARK 900 1EQO IS THE CRYSTAL STRUCTURE OF TERNARY COMPLEX OF HPPK FROM E. REMARK 900 COLI WITH MGAMPCPP AND 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN REMARK 900 RELATED ID: 1HKA RELATED DB: PDB REMARK 900 1HKA IS THE CRYSTAL STRUCTURE OF UNLIGANDED HPPK FROM E. COLI. REMARK 900 RELATED ID: 1CBK RELATED DB: PDB REMARK 900 1CBK IS THE CRYSTAL STRUCTURE OF BINARY COMPLEX OF HPPK FROM REMARK 900 HAEMOPHILUS INFLUENZAE WITH A 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN REMARK 900 ANALOG. REMARK 900 RELATED ID: 1DY3 RELATED DB: PDB REMARK 900 1DY3 IS THE CRYSTAL STRUCTURE OF TERNARY COMPLEX OF HPPK FROM E. REMARK 900 COLI WITH MGATP AND A 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN ANALOG. DBREF 1EQM A 1 158 UNP P26281 HPPK_ECOLI 1 158 SEQRES 1 A 158 THR VAL ALA TYR ILE ALA ILE GLY SER ASN LEU ALA SER SEQRES 2 A 158 PRO LEU GLU GLN VAL ASN ALA ALA LEU LYS ALA LEU GLY SEQRES 3 A 158 ASP ILE PRO GLU SER HIS ILE LEU THR VAL SER SER PHE SEQRES 4 A 158 TYR ARG THR PRO PRO LEU GLY PRO GLN ASP GLN PRO ASP SEQRES 5 A 158 TYR LEU ASN ALA ALA VAL ALA LEU GLU THR SER LEU ALA SEQRES 6 A 158 PRO GLU GLU LEU LEU ASN HIS THR GLN ARG ILE GLU LEU SEQRES 7 A 158 GLN GLN GLY ARG VAL ARG LYS ALA GLU ARG TRP GLY PRO SEQRES 8 A 158 ARG THR LEU ASP LEU ASP ILE MET LEU PHE GLY ASN GLU SEQRES 9 A 158 VAL ILE ASN THR GLU ARG LEU THR VAL PRO HIS TYR ASP SEQRES 10 A 158 MET LYS ASN ARG GLY PHE MET LEU TRP PRO LEU PHE GLU SEQRES 11 A 158 ILE ALA PRO GLU LEU VAL PHE PRO ASP GLY GLU MET LEU SEQRES 12 A 158 ARG GLN ILE LEU HIS THR ARG ALA PHE ASP LYS LEU ASN SEQRES 13 A 158 LYS TRP HET MG A 161 1 HET PO4 A 181 5 HET ADP A 171 54 HETNAM MG MAGNESIUM ION HETNAM PO4 PHOSPHATE ION HETNAM ADP ADENOSINE-5'-DIPHOSPHATE FORMUL 2 MG MG 2+ FORMUL 3 PO4 O4 P 3- FORMUL 4 ADP C10 H15 N5 O10 P2 FORMUL 5 HOH *258(H2 O) HELIX 1 1 PRO A 14 ASP A 27 1 14 HELIX 2 2 ALA A 65 GLY A 81 1 17 HELIX 3 3 ASP A 117 ASN A 120 5 4 HELIX 4 4 ARG A 121 ALA A 132 1 12 HELIX 5 5 MET A 142 ALA A 151 1 10 SHEET 1 A 4 LEU A 94 PHE A 101 0 SHEET 2 A 4 VAL A 2 SER A 9 -1 O TYR A 4 N MET A 99 SHEET 3 A 4 TYR A 53 THR A 62 -1 N LEU A 54 O SER A 9 SHEET 4 A 4 SER A 31 VAL A 36 -1 O HIS A 32 N GLU A 61 SHEET 1 B 5 LEU A 94 PHE A 101 0 SHEET 2 B 5 VAL A 2 SER A 9 -1 O TYR A 4 N MET A 99 SHEET 3 B 5 TYR A 53 THR A 62 -1 N LEU A 54 O SER A 9 SHEET 4 B 5 TYR A 40 THR A 42 -1 N TYR A 40 O ASN A 55 SHEET 5 B 5 ASN A 156 LYS A 157 -1 O ASN A 156 N ARG A 41 SHEET 1 C 2 ARG A 84 LYS A 85 0 SHEET 2 C 2 ARG A 88 TRP A 89 -1 O ARG A 88 N LYS A 85 SHEET 1 D 2 ILE A 106 ASN A 107 0 SHEET 2 D 2 THR A 112 VAL A 113 -1 N VAL A 113 O ILE A 106 LINK OE2 GLU A 77 MG MG A 161 1555 1555 2.59 LINK O LEU A 96 MG MG A 161 1555 1555 2.81 LINK MG MG A 161 O1BAADP A 171 1555 1555 2.01 LINK MG MG A 161 O1BBADP A 171 1555 1555 2.12 LINK MG MG A 161 O3BAADP A 171 1555 1555 3.12 LINK MG MG A 161 O3BBADP A 171 1555 1555 2.19 LINK MG MG A 161 O HOH A 419 1555 1555 2.71 CISPEP 1 VAL A 113 PRO A 114 0 -6.02 SITE 1 AC1 4 GLU A 77 LEU A 96 ADP A 171 HOH A 419 SITE 1 AC2 5 TYR A 53 PHE A 123 HOH A 400 HOH A 401 SITE 2 AC2 5 HOH A 402 SITE 1 AC3 21 LYS A 23 LEU A 70 GLN A 74 GLU A 77 SITE 2 AC3 21 ARG A 92 ASP A 95 ASP A 97 ILE A 98 SITE 3 AC3 21 ARG A 110 LEU A 111 THR A 112 HIS A 148 SITE 4 AC3 21 MG A 161 HOH A 404 HOH A 406 HOH A 415 SITE 5 AC3 21 HOH A 417 HOH A 418 HOH A 419 HOH A 422 SITE 6 AC3 21 HOH A 427 CRYST1 79.140 52.800 36.640 90.00 103.43 90.00 C 1 2 1 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 0.012636 0.000000 0.003017 0.00000 SCALE2 0.000000 0.018939 0.000000 0.00000 SCALE3 0.000000 0.000000 0.028060 0.00000