HEADER HYDROLASE 22-MAR-01 1IA6 TITLE CRYSTAL STRUCTURE OF THE CELLULASE CEL9M OF C. CELLULOLYTICUM COMPND MOL_ID: 1; COMPND 2 MOLECULE: CELLULASE CEL9M; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: CATALYTIC MODULE; COMPND 5 EC: 3.2.1.4; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: CLOSTRIDIUM CELLULOLYTICUM; SOURCE 3 ORGANISM_TAXID: 1521; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 6 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID KEYWDS CELLULLASE, ALPHA BARREL, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR G.PARSIEGLA,A.BELAICH,J.P.BELAICH,R.HASER REVDAT 3 09-AUG-23 1IA6 1 REMARK LINK REVDAT 2 24-FEB-09 1IA6 1 VERSN REVDAT 1 30-OCT-02 1IA6 0 JRNL AUTH G.PARSIEGLA,A.BELAICH,J.P.BELAICH,R.HASER JRNL TITL CRYSTAL STRUCTURE OF THE CELLULASE CEL9M ENLIGHTENS JRNL TITL 2 STRUCTURE/FUNCTION RELATIONSHIPS OF THE VARIABLE CATALYTIC JRNL TITL 3 MODULES IN GLYCOSIDE HYDROLASES. JRNL REF BIOCHEMISTRY V. 41 11134 2002 JRNL REFN ISSN 0006-2960 JRNL PMID 12220178 JRNL DOI 10.1021/BI025816M REMARK 2 REMARK 2 RESOLUTION. 1.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.0 REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 29.24 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 1252803.330 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 97.4 REMARK 3 NUMBER OF REFLECTIONS : 33853 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) : 0.158 REMARK 3 FREE R VALUE : 0.189 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 1730 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.005 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.80 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.91 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 91.40 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 4922 REMARK 3 BIN R VALUE (WORKING SET) : 0.2220 REMARK 3 BIN FREE R VALUE : 0.2490 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.90 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 308 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.014 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 3305 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 8 REMARK 3 SOLVENT ATOMS : 262 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 14.80 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 16.30 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.17000 REMARK 3 B22 (A**2) : -1.31000 REMARK 3 B33 (A**2) : 1.49000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : -0.05000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.16 REMARK 3 ESD FROM SIGMAA (A) : 0.11 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.19 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.15 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.004 REMARK 3 BOND ANGLES (DEGREES) : 1.200 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 21.60 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.710 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. RMS SIGMA REMARK 3 MAIN-CHAIN BOND (A**2) : 1.160 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 1.750 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 1.890 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 2.780 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.38 REMARK 3 BSOL : 49.21 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 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 3 : ION.PARAM REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : ION.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: THE SEQUENCE IN TWO FLEXIBLE LOOPS REMARK 3 BETWEEN L239 AND N246 OR A373 AND D376 REMARK 3 COULD NOT BE FITTED AND IS OMITTED. REMARK 3 MASS SPECTROMETRIC ANALYSIS HAS INDICATED THAT THE REMARK 3 SEQUENCE GTIVNPPVKK SHOULD ADDITIONALLY BE PRESENT REMARK 3 AT THE C-TERMINUS IN THE CRYSTAL, BUT IT COULD NOT REMARK 3 BE TRACED IN THE ELECTRON DENSITY. REMARK 4 REMARK 4 1IA6 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 26-MAR-01. REMARK 100 THE DEPOSITION ID IS D_1000013097. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 14-OCT-00 REMARK 200 TEMPERATURE (KELVIN) : 290 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : ENRAF-NONIUS FU581 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : CONFOCAL MIRRORS REMARK 200 OPTICS : OSMIC CONFOCAL MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALA, CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 33837 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.800 REMARK 200 RESOLUTION RANGE LOW (A) : 16.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.8 REMARK 200 DATA REDUNDANCY : 5.000 REMARK 200 R MERGE (I) : 0.08300 REMARK 200 R SYM (I) : 6.60000 REMARK 200 FOR THE DATA SET : 9.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.80 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.86 REMARK 200 COMPLETENESS FOR SHELL (%) : 88.7 REMARK 200 DATA REDUNDANCY IN SHELL : 3.00 REMARK 200 R MERGE FOR SHELL (I) : 0.29500 REMARK 200 R SYM FOR SHELL (I) : 23.0000 REMARK 200 FOR SHELL : 2.900 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: MODEL WITH CEL9M SEQUENCE BASED ON PDB ENTRY 1JS4. REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 36.40 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 1.93 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: AMMONIUM SULPHATE, CALCIUM CHLORIDE, REMARK 280 HEPES, PH 7.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 290K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 1 21 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,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 26.50500 REMARK 290 SMTRY3 2 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 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 GLY A 240 REMARK 465 ASN A 241 REMARK 465 THR A 242 REMARK 465 MET A 243 REMARK 465 ASN A 244 REMARK 465 GLU A 245 REMARK 465 ASN A 374 REMARK 465 GLY A 375 REMARK 465 GLY A 432 REMARK 465 THR A 433 REMARK 465 ILE A 434 REMARK 465 VAL A 435 REMARK 465 ASN A 436 REMARK 465 PRO A 437 REMARK 465 PRO A 438 REMARK 465 VAL A 439 REMARK 465 LYS A 440 REMARK 465 LYS A 441 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 HIS A 39 55.49 36.44 REMARK 500 ALA A 57 -106.49 -141.12 REMARK 500 ASP A 59 -169.41 -103.10 REMARK 500 HIS A 109 73.16 -119.77 REMARK 500 ALA A 151 49.05 -167.26 REMARK 500 GLN A 201 -151.85 56.57 REMARK 500 TRP A 252 -140.48 -106.62 REMARK 500 THR A 371 -151.12 -124.73 REMARK 500 TYR A 372 47.15 -97.71 REMARK 500 GLN A 395 1.63 -69.33 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 NI A1265 NI REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ALA A 1 N REMARK 620 2 ALA A 1 O 77.0 REMARK 620 3 HIS A 4 NE2 120.6 96.9 REMARK 620 4 ASP A 343 OD2 85.5 156.8 105.1 REMARK 620 5 HOH A1497 O 129.2 83.7 108.0 96.0 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 ZN A1264 ZN REMARK 620 N RES CSSEQI ATOM REMARK 620 1 CYS A 22 SG REMARK 620 2 CYS A 38 SG 118.6 REMARK 620 3 HIS A 39 ND1 109.9 110.0 REMARK 620 4 HIS A 55 NE2 103.2 104.7 110.0 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A1263 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 SER A 208 O REMARK 620 2 SER A 208 OG 71.9 REMARK 620 3 ASP A 211 OD2 128.0 83.3 REMARK 620 4 ASP A 211 OD1 79.4 68.1 48.8 REMARK 620 5 ASP A 212 OD2 81.5 135.8 86.3 72.8 REMARK 620 6 ASP A 257 O 124.1 70.5 86.4 120.8 151.3 REMARK 620 7 HOH A1282 O 140.1 143.2 84.0 124.4 77.3 74.3 REMARK 620 8 HOH A1287 O 71.5 106.6 160.5 150.4 97.1 81.4 78.1 REMARK 620 N 1 2 3 4 5 6 7 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 1263 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE ZN A 1264 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NI A 1265 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 1266 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1JS4 RELATED DB: PDB REMARK 900 CELLULASE OF GH FAMILY 9 REMARK 900 RELATED ID: 1CLC RELATED DB: PDB REMARK 900 CELLULASE OF GH FAMILY 9 REMARK 900 RELATED ID: 1IA7 RELATED DB: PDB REMARK 900 CELLULASE CEL9M OF C. CELLULOLYTICUM IN COMPLEX WITH CELLOBIOSE DBREF 1IA6 A 1 441 UNP Q9EYQ2 Q9EYQ2_CLOCE 31 471 SEQADV 1IA6 PHE A 282 UNP Q9EYQ2 ILE 312 SEE REMARK 999 SEQRES 1 A 441 ALA GLY THR HIS ASP TYR SER THR ALA LEU LYS ASP SER SEQRES 2 A 441 ILE ILE PHE PHE ASP ALA ASN LYS CYS GLY PRO GLN ALA SEQRES 3 A 441 GLY GLU ASN ASN VAL PHE ASP TRP ARG GLY ALA CYS HIS SEQRES 4 A 441 THR THR ASP GLY SER ASP VAL GLY VAL ASP LEU THR GLY SEQRES 5 A 441 GLY TYR HIS ASP ALA GLY ASP HIS VAL LYS PHE GLY LEU SEQRES 6 A 441 PRO GLN GLY TYR SER ALA ALA ILE LEU GLY TRP SER LEU SEQRES 7 A 441 TYR GLU PHE LYS GLU SER PHE ASP ALA THR GLY ASN THR SEQRES 8 A 441 THR LYS MET LEU GLN GLN LEU LYS TYR PHE THR ASP TYR SEQRES 9 A 441 PHE LEU LYS SER HIS PRO ASN SER THR THR PHE TYR TYR SEQRES 10 A 441 GLN VAL GLY GLU GLY ASN ALA ASP HIS THR TYR TRP GLY SEQRES 11 A 441 ALA PRO GLU GLU GLN THR GLY GLN ARG PRO SER LEU TYR SEQRES 12 A 441 LYS ALA ASP PRO SER SER PRO ALA SER ASP ILE LEU SER SEQRES 13 A 441 GLU THR SER ALA ALA LEU THR LEU MET TYR LEU ASN TYR SEQRES 14 A 441 LYS ASN ILE ASP SER ALA TYR ALA THR LYS CYS LEU ASN SEQRES 15 A 441 ALA ALA LYS GLU LEU TYR ALA MET GLY LYS ALA ASN GLN SEQRES 16 A 441 GLY VAL GLY ASN GLY GLN SER PHE TYR GLN ALA THR SER SEQRES 17 A 441 PHE GLY ASP ASP LEU ALA TRP ALA ALA THR TRP LEU TYR SEQRES 18 A 441 THR ALA THR ASN ASP SER THR TYR ILE THR ASP ALA GLU SEQRES 19 A 441 GLN PHE ILE THR LEU GLY ASN THR MET ASN GLU ASN LYS SEQRES 20 A 441 MET GLN ASP LYS TRP THR MET CYS TRP ASP ASP MET TYR SEQRES 21 A 441 VAL PRO ALA ALA LEU ARG LEU ALA GLN ILE THR GLY LYS SEQRES 22 A 441 GLN ILE TYR LYS ASP ALA ILE GLU PHE ASN PHE ASN TYR SEQRES 23 A 441 TRP LYS THR GLN VAL THR THR THR PRO GLY GLY LEU LYS SEQRES 24 A 441 TRP LEU SER ASN TRP GLY VAL LEU ARG TYR ALA ALA ALA SEQRES 25 A 441 GLU SER MET VAL MET LEU VAL TYR CYS LYS GLN ASN PRO SEQRES 26 A 441 ASP GLN SER LEU LEU ASP LEU ALA LYS LYS GLN VAL ASP SEQRES 27 A 441 TYR ILE LEU GLY ASP ASN PRO ALA ASN MET SER TYR ILE SEQRES 28 A 441 ILE GLY TYR GLY SER ASN TRP CYS ILE HIS PRO HIS HIS SEQRES 29 A 441 ARG ALA ALA ASN GLY TYR THR TYR ALA ASN GLY ASP ASN SEQRES 30 A 441 ALA LYS PRO ALA LYS HIS LEU LEU THR GLY ALA LEU VAL SEQRES 31 A 441 GLY GLY PRO ASP GLN ASN ASP LYS PHE LEU ASP ASP ALA SEQRES 32 A 441 ASN GLN TYR GLN TYR THR GLU VAL ALA LEU ASP TYR ASN SEQRES 33 A 441 ALA GLY LEU VAL GLY VAL LEU ALA GLY ALA ILE LYS PHE SEQRES 34 A 441 PHE GLY GLY THR ILE VAL ASN PRO PRO VAL LYS LYS HET CA A1263 1 HET ZN A1264 1 HET NI A1265 1 HET SO4 A1266 5 HETNAM CA CALCIUM ION HETNAM ZN ZINC ION HETNAM NI NICKEL (II) ION HETNAM SO4 SULFATE ION FORMUL 2 CA CA 2+ FORMUL 3 ZN ZN 2+ FORMUL 4 NI NI 2+ FORMUL 5 SO4 O4 S 2- FORMUL 6 HOH *262(H2 O) HELIX 1 1 ASP A 5 PHE A 16 1 12 HELIX 2 2 PHE A 17 ASN A 20 5 4 HELIX 3 3 GLY A 64 PHE A 81 1 18 HELIX 4 4 PHE A 81 THR A 88 1 8 HELIX 5 5 ASN A 90 SER A 108 1 19 HELIX 6 6 GLU A 121 HIS A 126 1 6 HELIX 7 7 ALA A 131 GLN A 135 5 5 HELIX 8 8 ALA A 151 LYS A 170 1 20 HELIX 9 9 ASP A 173 ASN A 194 1 22 HELIX 10 10 PHE A 209 ASN A 225 1 17 HELIX 11 11 SER A 227 ILE A 237 1 11 HELIX 12 12 THR A 238 LEU A 239 5 2 HELIX 13 13 ASN A 246 ASP A 250 5 5 HELIX 14 14 MET A 259 GLY A 272 1 14 HELIX 15 15 LYS A 273 GLN A 290 1 18 HELIX 16 16 GLY A 305 ASN A 324 1 20 HELIX 17 17 ASP A 326 GLY A 342 1 17 HELIX 18 18 HIS A 364 GLY A 369 1 6 HELIX 19 19 GLN A 405 GLU A 410 1 6 HELIX 20 20 ALA A 412 PHE A 430 1 19 SHEET 1 A 3 LYS A 62 PHE A 63 0 SHEET 2 A 3 PHE A 115 VAL A 119 -1 O VAL A 119 N LYS A 62 SHEET 3 A 3 TYR A 143 ALA A 145 -1 O TYR A 143 N TYR A 117 LINK N ALA A 1 NI NI A1265 1555 1555 2.17 LINK O ALA A 1 NI NI A1265 1555 1555 2.37 LINK NE2 HIS A 4 NI NI A1265 1555 1555 2.11 LINK SG CYS A 22 ZN ZN A1264 1555 1555 2.28 LINK SG CYS A 38 ZN ZN A1264 1555 1555 2.32 LINK ND1 HIS A 39 ZN ZN A1264 1555 1555 2.07 LINK NE2 HIS A 55 ZN ZN A1264 1555 1555 2.10 LINK O SER A 208 CA CA A1263 1555 1555 2.43 LINK OG SER A 208 CA CA A1263 1555 1555 2.64 LINK OD2 ASP A 211 CA CA A1263 1555 1555 2.47 LINK OD1 ASP A 211 CA CA A1263 1555 1555 2.78 LINK OD2 ASP A 212 CA CA A1263 1555 1555 2.39 LINK O ASP A 257 CA CA A1263 1555 1555 2.44 LINK OD2 ASP A 343 NI NI A1265 1555 1555 1.99 LINK CA CA A1263 O HOH A1282 1555 1555 2.43 LINK CA CA A1263 O HOH A1287 1555 1555 2.39 LINK NI NI A1265 O HOH A1497 1555 1555 2.10 SITE 1 AC1 6 SER A 208 ASP A 211 ASP A 212 ASP A 257 SITE 2 AC1 6 HOH A1282 HOH A1287 SITE 1 AC2 4 CYS A 22 CYS A 38 HIS A 39 HIS A 55 SITE 1 AC3 4 ALA A 1 HIS A 4 ASP A 343 HOH A1497 SITE 1 AC4 5 TRP A 256 TRP A 304 ARG A 308 HOH A1289 SITE 2 AC4 5 HOH A1488 CRYST1 52.350 53.010 71.680 90.00 108.70 90.00 P 1 21 1 2 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 0.019102 0.000000 0.006466 0.00000 SCALE2 0.000000 0.018864 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014728 0.00000