HEADER TRANSFERASE 14-SEP-99 1D0V TITLE CRYSTAL STRUCTURE OF NICOTINATE MONONUCLEOTIDE:5,6- TITLE 2 DIMETHYLBENZIMIDAZOLE PHOSPHORIBOSYLTRANSFERASE (COBT) FROM TITLE 3 SALMONELLA TYPHIMURIUM COMPLEXED WITH ITS REACTION PRODUCTS TITLE 4 DETERMINED TO 1.9 A RESOLUTION COMPND MOL_ID: 1; COMPND 2 MOLECULE: NICOTINATE MONONUCLEOTIDE:5,6-DIMETHYLBENZIMIDAZOLE COMPND 3 PHOSPHORIBOSYLTRANSFERASE; COMPND 4 CHAIN: A; COMPND 5 EC: 2.4.2.21 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SALMONELLA TYPHIMURIUM; SOURCE 3 ORGANISM_TAXID: 602 KEYWDS DINUCLEOTIDE-BINDING MOTIF, PHOSPHORIBOSYLTRANSFERASE, TRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR C.-G.CHEONG,J.C.ESCALANTE-SEMERENA,I.RAYMENT REVDAT 7 06-NOV-24 1D0V 1 REMARK REVDAT 6 31-JAN-18 1D0V 1 REMARK REVDAT 5 04-OCT-17 1D0V 1 REMARK REVDAT 4 13-JUL-11 1D0V 1 VERSN REVDAT 3 24-FEB-09 1D0V 1 VERSN REVDAT 2 01-APR-03 1D0V 1 JRNL REVDAT 1 29-DEC-99 1D0V 0 JRNL AUTH C.G.CHEONG,J.C.ESCALANTE-SEMERENA,I.RAYMENT JRNL TITL THE THREE-DIMENSIONAL STRUCTURES OF NICOTINATE JRNL TITL 2 MONONUCLEOTIDE:5,6- DIMETHYLBENZIMIDAZOLE JRNL TITL 3 PHOSPHORIBOSYLTRANSFERASE (COBT) FROM SALMONELLA TYPHIMURIUM JRNL TITL 4 COMPLEXED WITH 5,6-DIMETHYBENZIMIDAZOLE AND ITS REACTION JRNL TITL 5 PRODUCTS DETERMINED TO 1.9 A RESOLUTION. JRNL REF BIOCHEMISTRY V. 38 16125 1999 JRNL REFN ISSN 0006-2960 JRNL PMID 10587435 JRNL DOI 10.1021/BI991752C REMARK 2 REMARK 2 RESOLUTION. 1.90 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : TNT REMARK 3 AUTHORS : TRONRUD,TEN EYCK,MATTHEWS REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.90 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 30.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 87.3 REMARK 3 NUMBER OF REFLECTIONS : 21894 REMARK 3 REMARK 3 USING DATA ABOVE SIGMA CUTOFF. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : 10 % OF DATA WERE OMITTED REMARK 3 RANDOMLY REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.160 REMARK 3 FREE R VALUE : 0.249 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 USING ALL DATA, NO SIGMA CUTOFF. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : 0.1630 REMARK 3 R VALUE (WORKING SET, NO CUTOFF) : NULL REMARK 3 FREE R VALUE (NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%, NO CUTOFF) : NULL REMARK 3 FREE R VALUE TEST SET COUNT (NO CUTOFF) : NULL REMARK 3 TOTAL NUMBER OF REFLECTIONS (NO CUTOFF) : 25069 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2418 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 33 REMARK 3 SOLVENT ATOMS : 158 REMARK 3 REMARK 3 WILSON B VALUE (FROM FCALC, A**2) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. RMS WEIGHT COUNT REMARK 3 BOND LENGTHS (A) : 0.010 ; NULL ; NULL REMARK 3 BOND ANGLES (DEGREES) : 1.830 ; NULL ; NULL REMARK 3 TORSION ANGLES (DEGREES) : NULL ; NULL ; NULL REMARK 3 PSEUDOROTATION ANGLES (DEGREES) : NULL ; NULL ; NULL REMARK 3 TRIGONAL CARBON PLANES (A) : NULL ; NULL ; NULL REMARK 3 GENERAL PLANES (A) : NULL ; NULL ; NULL REMARK 3 ISOTROPIC THERMAL FACTORS (A**2) : NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS (A) : NULL ; NULL ; NULL REMARK 3 REMARK 3 INCORRECT CHIRAL-CENTERS (COUNT) : 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 RESTRAINT LIBRARIES. REMARK 3 STEREOCHEMISTRY : ENGH & HUBER REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1D0V COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 17-SEP-99. REMARK 100 THE DEPOSITION ID IS D_1000009694. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 20-JAN-99 REMARK 200 TEMPERATURE (KELVIN) : 277.0 REMARK 200 PH : 6.0 REMARK 200 NUMBER OF CRYSTALS USED : 2 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 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL 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 : 21894 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.900 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 87.3 REMARK 200 DATA REDUNDANCY : 3.100 REMARK 200 R MERGE (I) : 0.06600 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 10.9000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.88 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.98 REMARK 200 COMPLETENESS FOR SHELL (%) : 65.0 REMARK 200 DATA REDUNDANCY IN SHELL : 1.30 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: SOLVE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 41.59 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.11 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1.3 NH4H2PO4/(NH4)2HPO4, 1MM 5,6 REMARK 280 -DIMETHYLBENZIMIDAZOLE, 4 % POLYETHYLENEGLYCOL, AND THEN THE REMARK 280 CRYSTALS WERE SOAKED IN 21 MM NICOTINATE MONONUCLEOTIDE IN 1.0 M REMARK 280 NAH2PO4/K2HPO4 (PH 6.0), VAPOR DIFFUSION, HANGING DROP, REMARK 280 TEMPERATURE 277.0K 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 36.05000 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 36.05000 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: 6330 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 21050 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -23.0 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 72.10000 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 THR A 3 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 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 LEU A 146 CG CD1 CD2 REMARK 470 ARG A 157 CG CD NE CZ NH1 NH2 REMARK 470 ARG A 165 CG CD NE CZ NH1 NH2 REMARK 470 LYS A 196 CG CD CE NZ REMARK 470 GLU A 197 CG CD OE1 OE2 REMARK 470 ILE A 201 CG1 CG2 CD1 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: COVALENT BOND LENGTHS 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,2(A3,1X,A1,I4,A1,1X,A4,3X),1X,F6.3) 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 RES CSSEQI ATM2 DEVIATION REMARK 500 GLU A 17 CD GLU A 17 OE2 0.070 REMARK 500 GLU A 293 CD GLU A 293 OE2 0.078 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 10 CB - CG - OD2 ANGL. DEV. = -5.9 DEGREES REMARK 500 ASP A 69 CB - CG - OD1 ANGL. DEV. = 5.8 DEGREES REMARK 500 ASP A 69 CB - CG - OD2 ANGL. DEV. = -6.5 DEGREES REMARK 500 ASP A 74 CB - CG - OD2 ANGL. DEV. = -5.7 DEGREES REMARK 500 ARG A 129 NE - CZ - NH1 ANGL. DEV. = 3.2 DEGREES REMARK 500 PRO A 207 N - CA - CB ANGL. DEV. = 7.6 DEGREES REMARK 500 ASP A 230 CB - CG - OD1 ANGL. DEV. = 6.1 DEGREES REMARK 500 ASP A 230 CB - CG - OD2 ANGL. DEV. = -5.7 DEGREES REMARK 500 ASP A 263 CB - CG - OD1 ANGL. DEV. = 5.5 DEGREES REMARK 500 ASP A 263 CB - CG - OD2 ANGL. DEV. = -5.5 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 LEU A 30 64.64 -61.38 REMARK 500 ALA A 178 3.37 82.04 REMARK 500 ASP A 263 -112.69 -114.59 REMARK 500 SER A 288 -78.37 -117.56 REMARK 500 ARG A 314 47.05 -161.65 REMARK 500 GLU A 317 -7.54 69.52 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 RBZ A 990 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NIO A 991 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1D0S RELATED DB: PDB REMARK 900 1D0S CONTAINS THE SAME PROTEIN COMPLEXED WITH ITS SUBSTRATE (5,6- REMARK 900 DIMETHYLBENZIMIDAZOLE) WHILE THIS STRUCTURE CONTAINS ITS REACTION REMARK 900 PRODUCTS DBREF 1D0V A 1 356 UNP Q05603 COBT_SALTY 1 356 SEQADV 1D0V TYR A 158 UNP Q05603 CYS 158 SEE REMARK 999 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 ALA 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 RBZ A 990 24 HET NIO A 991 9 HETNAM RBZ ALPHA-RIBAZOLE-5'-PHOSPHATE HETNAM NIO NICOTINIC ACID FORMUL 2 RBZ C14 H19 N2 O7 P FORMUL 3 NIO C6 H5 N O2 FORMUL 4 HOH *158(H2 O) HELIX 1 1 LEU A 4 ASP A 10 1 7 HELIX 2 2 ASP A 15 GLY A 28 1 14 HELIX 3 3 GLY A 37 GLY A 48 1 12 HELIX 4 4 MET A 49 ASN A 53 5 5 HELIX 5 5 GLY A 71 GLY A 76 5 6 HELIX 6 6 ILE A 83 THR A 93 1 11 HELIX 7 7 THR A 97 GLY A 107 1 11 HELIX 8 8 SER A 144 GLN A 164 1 21 HELIX 9 9 ASN A 179 GLY A 192 1 14 HELIX 10 10 ASP A 194 VAL A 199 1 6 HELIX 11 11 PRO A 206 SER A 208 5 3 HELIX 12 12 ARG A 209 GLN A 225 1 17 HELIX 13 13 ASP A 230 GLY A 239 1 10 HELIX 14 14 GLY A 240 CYS A 256 1 17 HELIX 15 15 GLY A 264 ALA A 278 1 15 HELIX 16 16 PRO A 279 PRO A 283 5 5 HELIX 17 17 GLY A 295 SER A 304 1 10 HELIX 18 18 GLY A 318 MET A 338 1 21 HELIX 19 19 LEU A 341 ASN A 345 5 5 SHEET 1 A 6 VAL A 126 ASN A 127 0 SHEET 2 A 6 LYS A 109 GLY A 116 1 O VAL A 112 N VAL A 126 SHEET 3 A 6 GLU A 60 ALA A 68 1 O LYS A 61 N LYS A 109 SHEET 4 A 6 VAL A 167 LEU A 175 1 N THR A 168 O GLU A 60 SHEET 5 A 6 VAL A 260 LEU A 261 1 N LEU A 261 O PHE A 170 SHEET 6 A 6 LEU A 285 ILE A 286 1 N ILE A 286 O VAL A 260 SSBOND 1 CYS A 160 CYS A 256 1555 1555 2.01 SITE 1 AC1 18 PRO A 32 SER A 80 GLU A 174 LEU A 175 SITE 2 AC1 18 GLY A 176 MET A 177 ALA A 178 ASN A 179 SITE 3 AC1 18 THR A 180 GLY A 202 ALA A 203 LEU A 315 SITE 4 AC1 18 GLU A 317 HOH A 401 HOH A 490 HOH A 491 SITE 5 AC1 18 HOH A 574 NIO A 991 SITE 1 AC2 10 GLY A 264 PHE A 265 LEU A 266 SER A 291 SITE 2 AC2 10 ARG A 314 LEU A 315 GLY A 316 HOH A 402 SITE 3 AC2 10 HOH A 618 RBZ A 990 CRYST1 72.100 90.000 47.600 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 0.013870 0.000000 0.000000 0.00000 SCALE2 0.000000 0.011111 0.000000 0.00000 SCALE3 0.000000 0.000000 0.021008 0.00000