HEADER CHLOROPHYLL BIOSYNTHESIS 26-FEB-97 3GSA OBSLTE 17-AUG-99 3GSA 3GSB TITLE CRYSTAL STRUCTURE OF GLUTAMATE-1-SEMIALDEHYDE AMINOMUTASE TITLE 2 IN COMPLEX WITH GABACULINE COMPND MOL_ID: 1; COMPND 2 MOLECULE: GLUTAMATE SEMIALDEHYDE AMINOTRANSFERASE; COMPND 3 CHAIN: A, B; COMPND 4 SYNONYM: GLUTAMATE SEMIALDEHYDE AMINOMUTASE; COMPND 5 EC: 5.4.3.8; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SYNECHOCOCCUS SP.; SOURCE 3 STRAIN: GR6; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_STRAIN: SG13009 KEYWDS CHLOROPHYLL BIOSYNTHESIS, PYRIDOXAL-5'-PHOSPHATE, KEYWDS 2 PYRIDOXAMINE-5'-PHOSPHATE, ASYMMETRIC DIMER, GABACULINE EXPDTA X-RAY DIFFRACTION AUTHOR M.HENNIG,J.N.JANSONIUS REVDAT 2 23-AUG-99 3GSA 1 OBSLTE REVDAT 1 04-MAR-98 3GSA 0 JRNL AUTH M.HENNIG,B.GRIMM,R.CONTESTABILE,R.A.JOHN, JRNL AUTH 2 J.N.JANSONIUS JRNL TITL CRYSTAL STRUCTURE OF GLUTAMATE-1-SEMIALDEHYDE JRNL TITL 2 AMINOMUTASE: AN ALPHA2-DIMERIC VITAMIN JRNL TITL 3 B6-DEPENDENT ENZYME WITH ASYMMETRY IN STRUCTURE JRNL TITL 4 AND ACTIVE SITE REACTIVITY JRNL REF PROC.NATL.ACAD.SCI.USA V. 94 4866 1997 JRNL REFN ASTM PNASA6 US ISSN 0027-8424 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH M.HENNIG,B.GRIMM,M.JENNY,R.MULLER,J.N.JANSONIUS REMARK 1 TITL CRYSTALLIZATION AND PRELIMINARY X-RAY ANALYSIS OF REMARK 1 TITL 2 WILD-TYPE AND K272A MUTANT GLUTAMATE REMARK 1 TITL 3 1-SEMIALDEHYDE AMINOTRANSFERASE FROM SYNECHOCOCCUS REMARK 1 REF J.MOL.BIOL. V. 242 591 1994 REMARK 1 REFN ASTM JMOBAK UK ISSN 0022-2836 REMARK 2 REMARK 2 RESOLUTION. 3.00 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 3.1 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 3.00 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 15.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 98.0 REMARK 3 NUMBER OF REFLECTIONS : 18662 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : NULL REMARK 3 R VALUE (WORKING SET) : 0.159 REMARK 3 FREE R VALUE : 0.250 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 : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 3.00 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 3.05 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 96.50 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 811 REMARK 3 BIN R VALUE (WORKING SET) : 0.2800 REMARK 3 BIN FREE R VALUE : 0.3800 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.00 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 39 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 : 6255 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 166 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 32.00 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 29.60 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) : 0.012 REMARK 3 BOND ANGLES (DEGREES) : 1.98 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) : 3.000 ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.000 ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : 6.000 ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.000 ; 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 3GSA COMPLIES WITH FORMAT V. 2.3, 09-JULY-1998 REMARK 6 REMARK 6 THE ASYMMETRIC UNIT CONTAINS A STRUCTURALLY ASYMMETRIC REMARK 6 HOMODIMER. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 18-SEP-1995 REMARK 200 TEMPERATURE (KELVIN) : 273.0 REMARK 200 PH : 7.00 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : GX-21 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.54 REMARK 200 MONOCHROMATOR : GRAPHITE REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : SCALA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 18662 REMARK 200 RESOLUTION RANGE HIGH (A) : 3.000 REMARK 200 RESOLUTION RANGE LOW (A) : 15.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.0 REMARK 200 DATA REDUNDANCY : 3.100 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.11400 REMARK 200 FOR THE DATA SET : 6.2000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 3.00 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 3.16 REMARK 200 COMPLETENESS FOR SHELL (%) : 96.4 REMARK 200 DATA REDUNDANCY IN SHELL : 3.10 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.41200 REMARK 200 FOR SHELL : 1.800 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: CCP4 REMARK 200 STARTING MODEL: GSAT WILD-TYPE (NATIVE) STRUCTURE REMARK 200 REMARK 200 REMARK: COFACTORS AND WATERS WERE REMOVED FROM THE MODEL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 50.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.40 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PH 7.0 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 1/2-X,-Y,1/2+Z REMARK 290 3555 -X,1/2+Y,1/2-Z REMARK 290 4555 1/2+X,1/2-Y,-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 34.30000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 61.75000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 54.30000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 61.75000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 34.30000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 54.30000 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 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT REMARK 300 WHICH CONSISTS OF 2 CHAIN(S). SEE REMARK 350 FOR REMARK 300 INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S). REMARK 350 REMARK 350 GENERATING THE BIOMOLECULE 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 APPLY THE FOLLOWING TO CHAINS: A, B 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 VAL A 2 REMARK 465 THR A 3 REMARK 465 SER A 4 REMARK 465 SER A 5 REMARK 465 PRO A 6 REMARK 465 VAL B 2 REMARK 465 THR B 3 REMARK 465 SER B 4 REMARK 465 SER B 5 REMARK 465 PRO B 6 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),F6.3) REMARK 500 REMARK 500 EXPECTED VALUES: ENGH AND HUBER, 1991 REMARK 500 REMARK 500 M RES CSSEQI ATM1 RES CSSEQI ATM2 DEVIATION REMARK 500 LYS A 273 N LYS A 273 CA 0.073 REMARK 500 LYS A 273 CA LYS A 273 CB 0.148 REMARK 500 LYS A 273 CB LYS A 273 CG 0.121 REMARK 500 LYS A 273 CG LYS A 273 CD 0.072 REMARK 500 LYS A 273 CD LYS A 273 CE 0.094 REMARK 500 LYS A 273 CA LYS A 273 C 0.074 REMARK 500 MET B 134 CG MET B 134 SD 0.086 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: ENGH AND HUBER, 1991 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 ILE A 61 N - CA - C ANGL. DEV. =-12.8 DEGREES REMARK 500 ALA A 70 N - CA - C ANGL. DEV. = 12.1 DEGREES REMARK 500 ASN A 121 N - CA - C ANGL. DEV. = 11.4 DEGREES REMARK 500 SER A 173 N - CA - C ANGL. DEV. = 21.5 DEGREES REMARK 500 PRO A 174 C - N - CA ANGL. DEV. = 23.7 DEGREES REMARK 500 GLU A 212 N - CA - C ANGL. DEV. =-10.6 DEGREES REMARK 500 ILE A 214 N - CA - C ANGL. DEV. =-12.5 DEGREES REMARK 500 GLY A 263 N - CA - C ANGL. DEV. = 13.4 DEGREES REMARK 500 LYS A 273 CB - CA - C ANGL. DEV. = 11.9 DEGREES REMARK 500 LYS A 273 CB - CG - CD ANGL. DEV. = 14.0 DEGREES REMARK 500 LYS A 273 CD - CE - NZ ANGL. DEV. = 14.2 DEGREES REMARK 500 SER B 29 N - CA - C ANGL. DEV. =-14.7 DEGREES REMARK 500 ILE B 61 N - CA - C ANGL. DEV. =-12.2 DEGREES REMARK 500 ILE B 114 N - CA - C ANGL. DEV. = 11.6 DEGREES REMARK 500 SER B 173 N - CA - C ANGL. DEV. = 11.3 DEGREES REMARK 500 VAL B 359 N - CA - C ANGL. DEV. =-11.4 DEGREES REMARK 500 ALA B 432 N - CA - C ANGL. DEV. =-11.7 DEGREES 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 M RES CSSEQI PSI PHI REMARK 500 SER A 173 -99.66 81.15 REMARK 500 LYS A 273 -95.34 33.43 REMARK 500 ASP B 49 -114.59 57.14 REMARK 500 SER B 173 -71.10 95.49 REMARK 500 LYS B 273 -101.89 51.30 REMARK 600 REMARK 600 HETEROGEN REMARK 600 GAB IS IN ACTIVE SITE OF CHAIN B, NOT COVALENTLY BOUND TO REMARK 600 LYS 273. REMARK 600 REMARK 600 NZ LYS A 273 - C4A PLP A 273 IS SCHIFF BASE LINKAGE TO REMARK 600 COFACTOR PYRIDOXAL-5-PHOSPHATE. REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: COR REMARK 800 SITE_DESCRIPTION: SCHIFF BASE LINKAGE TO LYS 273 IN CHAIN REMARK 800 A. REMARK 999 REMARK 999 SEQUENCE REMARK 999 3GSA A SWS P24630 1 - 5 NOT IN ATOMS LIST REMARK 999 3GSA B SWS P24630 1 - 5 NOT IN ATOMS LIST REMARK 999 REMARK 999 THE SEQUENCE DISCREPANCIES BETWEEN THIS ENTRY AND SWISSPORT REMARK 999 ARE THE RESULT OF ERRORS IN SWISSPROT. DBREF 3GSA A 7 433 UNP P24630 GSA_SYNP6 6 432 DBREF 3GSA B 7 433 UNP P24630 GSA_SYNP6 6 432 SEQADV 3GSA TYR A 51 UNP P24630 ILE 50 CONFLICT SEQADV 3GSA LEU A 133 UNP P24630 VAL 132 CONFLICT SEQADV 3GSA MET A 134 UNP P24630 VAL 133 CONFLICT SEQADV 3GSA TYR B 51 UNP P24630 ILE 50 CONFLICT SEQADV 3GSA LEU B 133 UNP P24630 VAL 132 CONFLICT SEQADV 3GSA MET B 134 UNP P24630 VAL 133 CONFLICT SEQRES 1 A 432 VAL THR SER SER PRO PHE LYS THR ILE LYS SER ASP GLU SEQRES 2 A 432 ILE PHE ALA ALA ALA GLN LYS LEU MET PRO GLY GLY VAL SEQRES 3 A 432 SER SER PRO VAL ARG ALA PHE LYS SER VAL GLY GLY GLN SEQRES 4 A 432 PRO ILE VAL PHE ASP ARG VAL LYS ASP ALA TYR ALA TRP SEQRES 5 A 432 ASP VAL ASP GLY ASN ARG TYR ILE ASP TYR VAL GLY THR SEQRES 6 A 432 TRP GLY PRO ALA ILE CYS GLY HIS ALA HIS PRO GLU VAL SEQRES 7 A 432 ILE GLU ALA LEU LYS VAL ALA MET GLU LYS GLY THR SER SEQRES 8 A 432 PHE GLY ALA PRO CYS ALA LEU GLU ASN VAL LEU ALA GLU SEQRES 9 A 432 MET VAL ASN ASP ALA VAL PRO SER ILE GLU MET VAL ARG SEQRES 10 A 432 PHE VAL ASN SER GLY THR GLU ALA CYS MET ALA VAL LEU SEQRES 11 A 432 ARG LEU MET ARG ALA TYR THR GLY ARG ASP LYS ILE ILE SEQRES 12 A 432 LYS PHE GLU GLY CYS TYR HIS GLY HIS ALA ASP MET PHE SEQRES 13 A 432 LEU VAL LYS ALA GLY SER GLY VAL ALA THR LEU GLY LEU SEQRES 14 A 432 PRO SER SER PRO GLY VAL PRO LYS LYS THR THR ALA ASN SEQRES 15 A 432 THR LEU THR THR PRO TYR ASN ASP LEU GLU ALA VAL LYS SEQRES 16 A 432 ALA LEU PHE ALA GLU ASN PRO GLY GLU ILE ALA GLY VAL SEQRES 17 A 432 ILE LEU GLU PRO ILE VAL GLY ASN SER GLY PHE ILE VAL SEQRES 18 A 432 PRO ASP ALA GLY PHE LEU GLU GLY LEU ARG GLU ILE THR SEQRES 19 A 432 LEU GLU HIS ASP ALA LEU LEU VAL PHE ASP GLU VAL MET SEQRES 20 A 432 THR GLY PHE ARG ILE ALA TYR GLY GLY VAL GLN GLU LYS SEQRES 21 A 432 PHE GLY VAL THR PRO ASP LEU THR THR LEU GLY LYS ILE SEQRES 22 A 432 ILE GLY GLY GLY LEU PRO VAL GLY ALA TYR GLY GLY LYS SEQRES 23 A 432 ARG GLU ILE MET GLN LEU VAL ALA PRO ALA GLY PRO MET SEQRES 24 A 432 TYR GLN ALA GLY THR LEU SER GLY ASN PRO LEU ALA MET SEQRES 25 A 432 THR ALA GLY ILE LYS THR LEU GLU LEU LEU ARG GLN PRO SEQRES 26 A 432 GLY THR TYR GLU TYR LEU ASP GLN ILE THR LYS ARG LEU SEQRES 27 A 432 SER ASP GLY LEU LEU ALA ILE ALA GLN GLU THR GLY HIS SEQRES 28 A 432 ALA ALA CYS GLY GLY GLN VAL SER GLY MET PHE GLY PHE SEQRES 29 A 432 PHE PHE THR GLU GLY PRO VAL HIS ASN TYR GLU ASP ALA SEQRES 30 A 432 LYS LYS SER ASP LEU GLN LYS PHE SER ARG PHE HIS ARG SEQRES 31 A 432 GLY MET LEU GLU GLN GLY ILE TYR LEU ALA PRO SER GLN SEQRES 32 A 432 PHE GLU ALA GLY PHE THR SER LEU ALA HIS THR GLU GLU SEQRES 33 A 432 ASP ILE ASP ALA THR LEU ALA ALA ALA ARG THR VAL MET SEQRES 34 A 432 SER ALA LEU SEQRES 1 B 432 VAL THR SER SER PRO PHE LYS THR ILE LYS SER ASP GLU SEQRES 2 B 432 ILE PHE ALA ALA ALA GLN LYS LEU MET PRO GLY GLY VAL SEQRES 3 B 432 SER SER PRO VAL ARG ALA PHE LYS SER VAL GLY GLY GLN SEQRES 4 B 432 PRO ILE VAL PHE ASP ARG VAL LYS ASP ALA TYR ALA TRP SEQRES 5 B 432 ASP VAL ASP GLY ASN ARG TYR ILE ASP TYR VAL GLY THR SEQRES 6 B 432 TRP GLY PRO ALA ILE CYS GLY HIS ALA HIS PRO GLU VAL SEQRES 7 B 432 ILE GLU ALA LEU LYS VAL ALA MET GLU LYS GLY THR SER SEQRES 8 B 432 PHE GLY ALA PRO CYS ALA LEU GLU ASN VAL LEU ALA GLU SEQRES 9 B 432 MET VAL ASN ASP ALA VAL PRO SER ILE GLU MET VAL ARG SEQRES 10 B 432 PHE VAL ASN SER GLY THR GLU ALA CYS MET ALA VAL LEU SEQRES 11 B 432 ARG LEU MET ARG ALA TYR THR GLY ARG ASP LYS ILE ILE SEQRES 12 B 432 LYS PHE GLU GLY CYS TYR HIS GLY HIS ALA ASP MET PHE SEQRES 13 B 432 LEU VAL LYS ALA GLY SER GLY VAL ALA THR LEU GLY LEU SEQRES 14 B 432 PRO SER SER PRO GLY VAL PRO LYS LYS THR THR ALA ASN SEQRES 15 B 432 THR LEU THR THR PRO TYR ASN ASP LEU GLU ALA VAL LYS SEQRES 16 B 432 ALA LEU PHE ALA GLU ASN PRO GLY GLU ILE ALA GLY VAL SEQRES 17 B 432 ILE LEU GLU PRO ILE VAL GLY ASN SER GLY PHE ILE VAL SEQRES 18 B 432 PRO ASP ALA GLY PHE LEU GLU GLY LEU ARG GLU ILE THR SEQRES 19 B 432 LEU GLU HIS ASP ALA LEU LEU VAL PHE ASP GLU VAL MET SEQRES 20 B 432 THR GLY PHE ARG ILE ALA TYR GLY GLY VAL GLN GLU LYS SEQRES 21 B 432 PHE GLY VAL THR PRO ASP LEU THR THR LEU GLY LYS ILE SEQRES 22 B 432 ILE GLY GLY GLY LEU PRO VAL GLY ALA TYR GLY GLY LYS SEQRES 23 B 432 ARG GLU ILE MET GLN LEU VAL ALA PRO ALA GLY PRO MET SEQRES 24 B 432 TYR GLN ALA GLY THR LEU SER GLY ASN PRO LEU ALA MET SEQRES 25 B 432 THR ALA GLY ILE LYS THR LEU GLU LEU LEU ARG GLN PRO SEQRES 26 B 432 GLY THR TYR GLU TYR LEU ASP GLN ILE THR LYS ARG LEU SEQRES 27 B 432 SER ASP GLY LEU LEU ALA ILE ALA GLN GLU THR GLY HIS SEQRES 28 B 432 ALA ALA CYS GLY GLY GLN VAL SER GLY MET PHE GLY PHE SEQRES 29 B 432 PHE PHE THR GLU GLY PRO VAL HIS ASN TYR GLU ASP ALA SEQRES 30 B 432 LYS LYS SER ASP LEU GLN LYS PHE SER ARG PHE HIS ARG SEQRES 31 B 432 GLY MET LEU GLU GLN GLY ILE TYR LEU ALA PRO SER GLN SEQRES 32 B 432 PHE GLU ALA GLY PHE THR SER LEU ALA HIS THR GLU GLU SEQRES 33 B 432 ASP ILE ASP ALA THR LEU ALA ALA ALA ARG THR VAL MET SEQRES 34 B 432 SER ALA LEU MODRES 3GSA LYS A 273 LYS LINKED TO PLP HET PLP A 273 15 HET GAB A 500 10 HET PLP B 600 16 HETNAM PLP PYRIDOXAL-5'-PHOSPHATE HETNAM GAB GABACULINE HETSYN PLP VITAMIN B6 COMPLEX FORMUL 3 PLP 2(C8 H10 N O6 P) FORMUL 4 GAB C7 H7 N O2 FORMUL 6 HOH *157(H2 O1) HELIX 1 1 ILE A 10 LYS A 21 1 12 HELIX 2 2 PRO A 24 GLY A 26 5 3 HELIX 3 3 PRO A 30 ARG A 32 5 3 HELIX 4 4 GLY A 65 GLY A 68 5 4 HELIX 5 5 PRO A 77 LYS A 89 1 13 HELIX 6 6 ALA A 98 ALA A 110 1 13 HELIX 7 7 GLY A 123 THR A 138 1 16 HELIX 8 8 ASP A 155 PHE A 157 5 3 HELIX 9 9 SER A 163 LEU A 168 1 6 HELIX 10 10 LYS A 178 ASN A 183 1 6 HELIX 11 11 LEU A 192 ALA A 200 1 9 HELIX 12 12 PHE A 227 HIS A 238 1 12 HELIX 13 13 VAL A 258 LYS A 261 1 4 HELIX 14 14 LYS A 273 ILE A 275 5 3 HELIX 15 15 ARG A 288 LEU A 293 1 6 HELIX 16 16 PRO A 310 LEU A 323 1 14 HELIX 17 17 THR A 328 GLU A 349 1 22 HELIX 18 18 TYR A 375 LYS A 380 1 6 HELIX 19 19 LEU A 383 LEU A 394 1 12 HELIX 20 20 GLU A 416 MET A 430 1 15 HELIX 21 21 ILE B 10 LEU B 22 1 13 HELIX 22 22 PRO B 24 GLY B 26 5 3 HELIX 23 23 PRO B 30 ALA B 33 5 4 HELIX 24 24 LYS B 35 VAL B 37 5 3 HELIX 25 25 GLY B 65 TRP B 67 5 3 HELIX 26 26 PRO B 77 LYS B 89 1 13 HELIX 27 27 ALA B 98 ALA B 110 1 13 HELIX 28 28 GLY B 123 THR B 138 1 16 HELIX 29 29 VAL B 165 LEU B 168 1 4 HELIX 30 30 LEU B 192 ALA B 200 1 9 HELIX 31 31 PHE B 227 HIS B 238 1 12 HELIX 32 32 GLY B 257 LYS B 261 1 5 HELIX 33 33 LYS B 273 GLY B 276 5 4 HELIX 34 34 ARG B 288 LEU B 293 1 6 HELIX 35 35 PRO B 310 LEU B 323 1 14 HELIX 36 36 THR B 328 THR B 350 1 23 HELIX 37 37 TYR B 375 LYS B 380 1 6 HELIX 38 38 LEU B 383 GLN B 396 1 14 HELIX 39 39 GLU B 416 MET B 430 1 15 SHEET 1 A 3 ARG A 59 ILE A 61 0 SHEET 2 A 3 TYR A 51 ASP A 54 -1 N ALA A 52 O TYR A 60 SHEET 3 A 3 PHE A 44 LYS A 48 -1 N LYS A 48 O TYR A 51 SHEET 1 B 7 MET A 116 VAL A 120 0 SHEET 2 B 7 GLY A 282 GLY A 286 -1 N GLY A 286 O MET A 116 SHEET 3 B 7 LEU A 268 LEU A 271 -1 N LEU A 271 O ALA A 283 SHEET 4 B 7 LEU A 241 ASP A 245 1 N PHE A 244 O LEU A 268 SHEET 5 B 7 ILE A 206 LEU A 211 1 N VAL A 209 O LEU A 241 SHEET 6 B 7 LYS A 142 PHE A 146 1 N LYS A 142 O ALA A 207 SHEET 7 B 7 THR A 184 THR A 187 1 N LEU A 185 O ILE A 143 SHEET 1 C 2 CYS A 355 VAL A 359 0 SHEET 2 C 2 MET A 362 PHE A 366 -1 N PHE A 366 O CYS A 355 SHEET 1 D 3 ARG B 59 ILE B 61 0 SHEET 2 D 3 TYR B 51 ASP B 54 -1 N ALA B 52 O TYR B 60 SHEET 3 D 3 PHE B 44 LYS B 48 -1 N LYS B 48 O TYR B 51 SHEET 1 E 7 MET B 116 VAL B 120 0 SHEET 2 E 7 GLY B 282 GLY B 286 -1 N GLY B 286 O MET B 116 SHEET 3 E 7 LEU B 268 GLY B 272 -1 N LEU B 271 O ALA B 283 SHEET 4 E 7 LEU B 241 ASP B 245 1 N PHE B 244 O LEU B 268 SHEET 5 E 7 ILE B 206 LEU B 211 1 N VAL B 209 O LEU B 241 SHEET 6 E 7 LYS B 142 PHE B 146 1 N LYS B 142 O ALA B 207 SHEET 7 E 7 THR B 184 THR B 187 1 N LEU B 185 O ILE B 143 SHEET 1 F 2 CYS B 355 VAL B 359 0 SHEET 2 F 2 MET B 362 PHE B 366 -1 N PHE B 366 O CYS B 355 LINK C4A PLP A 273 NZ LYS A 273 CISPEP 1 ALA A 295 PRO A 296 0 -0.33 CISPEP 2 GLY A 370 PRO A 371 0 -0.23 CISPEP 3 ALA B 295 PRO B 296 0 0.54 CISPEP 4 GLY B 370 PRO B 371 0 -0.02 SITE 1 COR 1 PLP A 273 CRYST1 68.600 108.600 123.500 90.00 90.00 90.00 P 21 21 21 8 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 0.014577 0.000000 0.000000 0.00000 SCALE2 0.000000 0.009208 0.000000 0.00000 SCALE3 0.000000 0.000000 0.008097 0.00000