HEADER TRANSFERASE 06-MAR-02 1L4L TITLE CRYSTAL STRUCTURE OF COBT COMPLEXED WITH 2,5-DIMETHYLANILINE AND TITLE 2 NICOTINATE MONONUCLEOTIDE COMPND MOL_ID: 1; COMPND 2 MOLECULE: NICOTINATE-NUCLEOTIDE--DIMETHYLBENZIMIDAZOLE COMPND 3 PHOSPHORIBOSYLTRANSFERASE; COMPND 4 CHAIN: A; COMPND 5 SYNONYM: COBT; NN:DBI PRT; N1-ALPHA-PHOSPHORIBOSYLTRANSFERASE; COMPND 6 NICOTINATE MONONUCLEOTIDE:5,6-DIMETHYLBENZIMIDAZOLE COMPND 7 PHOSPHORIBOSYLTRANSFERASE; COMPND 8 EC: 2.4.2.21; COMPND 9 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SALMONELLA ENTERICA; SOURCE 3 ORGANISM_TAXID: 28901; SOURCE 4 GENE: COBT; SOURCE 5 EXPRESSION_SYSTEM: SALMONELLA ENTERICA; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 28901; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: JE2461; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PT7-5 KEYWDS COBT, COBALAMIN SYNTHETIC ENZYME, PHOSPHORIBOSYLTRANSFERASE, 5, 6- KEYWDS 2 DIMETHYLBENZIMIDAZOLE, NICOTINATE MONONUCLEOTIDE, TRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR C.-G.CHEONG,J.ESCALANTE-SEMERENA,I.RAYMENT REVDAT 6 16-AUG-23 1L4L 1 REMARK SEQADV SHEET REVDAT 5 15-JUN-16 1L4L 1 JRNL REVDAT 4 13-JUL-11 1L4L 1 VERSN REVDAT 3 24-FEB-09 1L4L 1 VERSN REVDAT 2 01-APR-03 1L4L 1 JRNL REVDAT 1 07-SEP-02 1L4L 0 JRNL AUTH C.G.CHEONG,J.C.ESCALANTE-SEMERENA,I.RAYMENT JRNL TITL CAPTURE OF A LABILE SUBSTRATE BY EXPULSION OF WATER JRNL TITL 2 MOLECULES FROM THE ACTIVE SITE OF NICOTINATE JRNL TITL 3 MONONUCLEOTIDE:5,6-DIMETHYLBENZIMIDAZOLE JRNL TITL 4 PHOSPHORIBOSYLTRANSFERASE (COBT) FROM SALMONELLA ENTERICA. JRNL REF J.BIOL.CHEM. V. 277 41120 2002 JRNL REFN ISSN 0021-9258 JRNL PMID 12101181 JRNL DOI 10.1074/JBC.M203535200 REMARK 2 REMARK 2 RESOLUTION. 2.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 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) : 2.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 500.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 20621 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) : 0.171 REMARK 3 FREE R VALUE : 0.202 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1035 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 : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL 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 : 2432 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 31 REMARK 3 SOLVENT ATOMS : 128 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : NULL 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) : 0.009 REMARK 3 BOND ANGLES (DEGREES) : 1.330 REMARK 3 DIHEDRAL ANGLES (DEGREES) : NULL REMARK 3 IMPROPER ANGLES (DEGREES) : NULL 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 BULK SOLVENT MODELING. REMARK 3 METHOD USED : NULL REMARK 3 KSOL : NULL REMARK 3 BSOL : 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 : NULL REMARK 3 TOPOLOGY FILE 1 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1L4L COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 21-MAR-02. REMARK 100 THE DEPOSITION ID IS D_1000015637. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : 278 REMARK 200 PH : 6.0 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 : RIGAKU RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : DOUBLE FOCUSING MIRROR REMARK 200 REMARK 200 DETECTOR TYPE : AREA DETECTOR REMARK 200 DETECTOR MANUFACTURER : SIEMENS HI-STAR REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XDS REMARK 200 DATA SCALING SOFTWARE : XDS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 20621 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.000 REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 89.0 REMARK 200 DATA REDUNDANCY : 2.800 REMARK 200 R MERGE (I) : 0.05900 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 16.9000 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) : 2.06 REMARK 200 COMPLETENESS FOR SHELL (%) : 68.0 REMARK 200 DATA REDUNDANCY IN SHELL : 1.70 REMARK 200 R MERGE FOR SHELL (I) : 0.10500 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 4.200 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: PDB ENTRY 1D0S REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 41.25 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.09 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: AMMONIUM PHOSPHATE, PH 6.0, VAPOR REMARK 280 DIFFUSION, HANGING DROP AT 298K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 2 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 35.88500 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 45.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 35.88500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 45.00000 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: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 6230 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 21250 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -28.0 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 -1.000000 0.000000 0.000000 71.77000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 90.00000 REMARK 350 BIOMT3 2 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 MET A 1 REMARK 465 GLN A 2 REMARK 465 GLU A 350 REMARK 465 GLY A 351 REMARK 465 ASN A 352 REMARK 465 ALA A 353 REMARK 465 ASN A 354 REMARK 465 ALA A 355 REMARK 465 THR A 356 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 THR A 3 OG1 CG2 REMARK 470 HIS A 5 CG ND1 CD2 CE1 NE2 REMARK 470 GLN A 24 CG CD OE1 NE2 REMARK 470 LYS A 109 CG CD CE NZ REMARK 470 ARG A 157 CG CD NE CZ NH1 NH2 REMARK 470 ASP A 161 CG OD1 OD2 REMARK 470 ARG A 165 CG CD NE CZ NH1 NH2 REMARK 470 LYS A 196 CG CD CE NZ REMARK 470 PRO A 207 CG CD REMARK 470 ARG A 209 CG CD NE CZ NH1 NH2 REMARK 470 ASP A 215 CG OD1 OD2 REMARK 470 ARG A 229 CG CD NE CZ NH1 NH2 REMARK 470 ARG A 297 CG CD NE CZ NH1 NH2 REMARK 470 GLU A 306 CG CD OE1 OE2 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 LEU A 30 71.08 -65.71 REMARK 500 ALA A 178 1.73 82.12 REMARK 500 ASP A 263 -111.64 -116.91 REMARK 500 SER A 288 -75.37 -114.72 REMARK 500 ARG A 314 38.04 -157.02 REMARK 500 GLU A 317 -6.25 72.93 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE XYD A 990 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NCN A 991 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1D0S RELATED DB: PDB REMARK 900 COBT COMPLEXED WITH 5,6-DIMETHYLBENZIMIDAZOLE REMARK 900 RELATED ID: 1L4B RELATED DB: PDB REMARK 900 RELATED ID: 1L4E RELATED DB: PDB REMARK 900 RELATED ID: 1L4F RELATED DB: PDB REMARK 900 RELATED ID: 1L4G RELATED DB: PDB REMARK 900 RELATED ID: 1L4H RELATED DB: PDB REMARK 900 RELATED ID: 1L4K RELATED DB: PDB REMARK 900 RELATED ID: 1L4M RELATED DB: PDB REMARK 900 RELATED ID: 1L4N RELATED DB: PDB REMARK 900 RELATED ID: 1L5F RELATED DB: PDB REMARK 900 RELATED ID: 1L5K RELATED DB: PDB REMARK 900 RELATED ID: 1L5L RELATED DB: PDB REMARK 900 RELATED ID: 1L5M RELATED DB: PDB REMARK 900 RELATED ID: 1L5N RELATED DB: PDB REMARK 900 RELATED ID: 1L5O RELATED DB: PDB DBREF 1L4L A 1 356 UNP Q05603 COBT_SALTY 1 356 SEQADV 1L4L THR A 159 UNP Q05603 ALA 159 CONFLICT SEQRES 1 A 356 MET GLN THR LEU HIS ALA LEU LEU ARG ASP ILE PRO ALA SEQRES 2 A 356 PRO ASP ALA GLU ALA MET ALA ARG THR GLN GLN HIS ILE SEQRES 3 A 356 ASP GLY LEU LEU LYS PRO PRO GLY SER LEU GLY ARG LEU SEQRES 4 A 356 GLU THR LEU ALA VAL GLN LEU ALA GLY MET PRO GLY LEU SEQRES 5 A 356 ASN GLY THR PRO GLN VAL GLY GLU LYS ALA VAL LEU VAL SEQRES 6 A 356 MET CYS ALA ASP HIS GLY VAL TRP ASP GLU GLY VAL ALA SEQRES 7 A 356 VAL SER PRO LYS ILE VAL THR ALA ILE GLN ALA ALA ASN SEQRES 8 A 356 MET THR ARG GLY THR THR GLY VAL CYS VAL LEU ALA ALA SEQRES 9 A 356 GLN ALA GLY ALA LYS VAL HIS VAL ILE ASP VAL GLY ILE SEQRES 10 A 356 ASP ALA GLU PRO ILE PRO GLY VAL VAL ASN MET ARG VAL SEQRES 11 A 356 ALA ARG GLY CYS GLY ASN ILE ALA VAL GLY PRO ALA MET SEQRES 12 A 356 SER ARG LEU GLN ALA GLU ALA LEU LEU LEU GLU VAL SER SEQRES 13 A 356 ARG TYR THR CYS ASP LEU ALA GLN ARG GLY VAL THR LEU SEQRES 14 A 356 PHE GLY VAL GLY GLU LEU GLY MET ALA ASN THR THR PRO SEQRES 15 A 356 ALA ALA ALA MET VAL SER VAL PHE THR GLY SER ASP ALA SEQRES 16 A 356 LYS GLU VAL VAL GLY ILE GLY ALA ASN LEU PRO PRO SER SEQRES 17 A 356 ARG ILE ASP ASN LYS VAL ASP VAL VAL ARG ARG ALA ILE SEQRES 18 A 356 ALA ILE ASN GLN PRO ASN PRO ARG ASP GLY ILE ASP VAL SEQRES 19 A 356 LEU SER LYS VAL GLY GLY PHE ASP LEU VAL GLY MET THR SEQRES 20 A 356 GLY VAL MET LEU GLY ALA ALA ARG CYS GLY LEU PRO VAL SEQRES 21 A 356 LEU LEU ASP GLY PHE LEU SER TYR SER ALA ALA LEU ALA SEQRES 22 A 356 ALA CYS GLN ILE ALA PRO ALA VAL ARG PRO TYR LEU ILE SEQRES 23 A 356 PRO SER HIS PHE SER ALA GLU LYS GLY ALA ARG ILE ALA SEQRES 24 A 356 LEU ALA HIS LEU SER MET GLU PRO TYR LEU HIS MET ALA SEQRES 25 A 356 MET ARG LEU GLY GLU GLY SER GLY ALA ALA LEU ALA MET SEQRES 26 A 356 PRO ILE VAL GLU ALA ALA CYS ALA MET PHE HIS ASN MET SEQRES 27 A 356 GLY GLU LEU ALA ALA SER ASN ILE VAL LEU PRO GLU GLY SEQRES 28 A 356 ASN ALA ASN ALA THR HET XYD A 990 9 HET NCN A 991 22 HETNAM XYD 2,5-DIMETHYLANILINE HETNAM NCN NICOTINATE MONONUCLEOTIDE HETSYN XYD 2,5-XYLIDINE HETSYN NCN NAMN FORMUL 2 XYD C8 H11 N FORMUL 3 NCN C11 H14 N O9 P FORMUL 4 HOH *128(H2 O) HELIX 1 2 ASP A 15 GLY A 28 1 14 HELIX 2 3 LEU A 36 GLY A 48 1 13 HELIX 3 4 MET A 49 ASN A 53 5 5 HELIX 4 5 HIS A 70 GLY A 76 5 7 HELIX 5 6 ILE A 83 ARG A 94 1 12 HELIX 6 7 THR A 97 GLY A 107 1 11 HELIX 7 8 SER A 144 GLN A 164 1 21 HELIX 8 9 ASN A 179 GLY A 192 1 14 HELIX 9 10 ASP A 194 VAL A 199 1 6 HELIX 10 11 PRO A 206 SER A 208 5 3 HELIX 11 13 ASP A 230 GLY A 239 1 10 HELIX 12 14 GLY A 240 CYS A 256 1 17 HELIX 13 15 GLY A 264 ALA A 278 1 15 HELIX 14 16 PRO A 279 PRO A 283 5 5 HELIX 15 17 GLY A 295 SER A 304 1 10 HELIX 16 18 GLY A 318 MET A 338 1 21 HELIX 17 19 GLU A 340 ASN A 345 5 6 SHEET 1 A 5 VAL A 126 ASN A 127 0 SHEET 2 A 5 GLU A 60 ALA A 68 1 N CYS A 67 O ILE A 113 SHEET 3 A 5 VAL A 167 LEU A 175 1 O GLY A 173 N MET A 66 SHEET 4 A 5 VAL A 260 LEU A 261 1 O LEU A 261 N PHE A 170 SHEET 5 A 5 LEU A 285 ILE A 286 1 O ILE A 286 N VAL A 260 SSBOND 1 CYS A 160 CYS A 256 1555 1555 2.03 SITE 1 AC1 5 PRO A 32 VAL A 84 GLN A 88 GLU A 317 SITE 2 AC1 5 NCN A 991 SITE 1 AC2 24 ALA A 78 GLU A 174 GLY A 176 MET A 177 SITE 2 AC2 24 ALA A 178 ASN A 179 THR A 180 GLY A 202 SITE 3 AC2 24 ALA A 203 GLY A 264 PHE A 265 LEU A 266 SITE 4 AC2 24 SER A 291 GLU A 293 ARG A 314 LEU A 315 SITE 5 AC2 24 GLY A 316 XYD A 990 HOH A1005 HOH A1009 SITE 6 AC2 24 HOH A1015 HOH A1021 HOH A1041 HOH A1047 CRYST1 71.770 90.000 47.580 90.00 90.00 90.00 P 21 21 2 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 0.013933 0.000000 0.000000 0.00000 SCALE2 0.000000 0.011111 0.000000 0.00000 SCALE3 0.000000 0.000000 0.021017 0.00000