HEADER TRANSFERASE 11-DEC-01 1KL1 TITLE CRYSTAL STRUCTURE OF SERINE HYDROXYMETHYLTRANSFERASE COMPLEXED WITH TITLE 2 GLYCINE COMPND MOL_ID: 1; COMPND 2 MOLECULE: SERINE HYDROXYMETHYLTRANSFERASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: SERINE METHYLASE, SHMT; COMPND 5 EC: 2.1.2.1; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: GEOBACILLUS STEAROTHERMOPHILUS; SOURCE 3 ORGANISM_TAXID: 1422; 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: PRSETC KEYWDS SHMT PLP TETRAHYDROFOLATE, TRANSFERASE EXPDTA X-RAY DIFFRACTION AUTHOR V.TRIVEDI,A.GUPTA,V.R.JALA,P.SARAVANAN,G.S.J.RAO,N.A.RAO, AUTHOR 2 H.S.SAVITHRI,H.S.SUBRAMANYA REVDAT 5 16-AUG-23 1KL1 1 REMARK LINK REVDAT 4 13-JUL-11 1KL1 1 VERSN REVDAT 3 24-FEB-09 1KL1 1 VERSN REVDAT 2 01-APR-03 1KL1 1 JRNL REVDAT 1 10-JUL-02 1KL1 0 JRNL AUTH V.TRIVEDI,A.GUPTA,V.R.JALA,P.SARAVANAN,G.S.RAO,N.A.RAO, JRNL AUTH 2 H.S.SAVITHRI,H.S.SUBRAMANYA JRNL TITL CRYSTAL STRUCTURE OF BINARY AND TERNARY COMPLEXES OF SERINE JRNL TITL 2 HYDROXYMETHYLTRANSFERASE FROM BACILLUS STEAROTHERMOPHILUS: JRNL TITL 3 INSIGHTS INTO THE CATALYTIC MECHANISM. JRNL REF J.BIOL.CHEM. V. 277 17161 2002 JRNL REFN ISSN 0021-9258 JRNL PMID 11877399 JRNL DOI 10.1074/JBC.M111976200 REMARK 2 REMARK 2 RESOLUTION. 1.93 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC REMARK 3 AUTHORS : MURSHUDOV,SKUBAK,LEBEDEV,PANNU,STEINER, REMARK 3 : NICHOLLS,WINN,LONG,VAGIN REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.93 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 27833 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : NULL REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.170 REMARK 3 FREE R VALUE : 0.197 REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : 1404 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 3116 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 20 REMARK 3 SOLVENT ATOMS : 245 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 OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): NULL REMARK 3 ESU BASED ON FREE R VALUE (A): NULL REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): NULL REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.008 ; NULL REMARK 3 ANGLE DISTANCE (A) : 0.025 ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.057 ; NULL REMARK 3 H-BOND OR METAL COORDINATION (A) : NULL ; NULL REMARK 3 REMARK 3 PLANE RESTRAINT (A) : NULL ; NULL REMARK 3 CHIRAL-CENTER RESTRAINT (A**3) : NULL ; NULL REMARK 3 REMARK 3 NON-BONDED CONTACT RESTRAINTS. REMARK 3 SINGLE TORSION (A) : NULL ; NULL REMARK 3 MULTIPLE TORSION (A) : NULL ; NULL REMARK 3 H-BOND (X...Y) (A) : NULL ; NULL REMARK 3 H-BOND (X-H...Y) (A) : NULL ; NULL REMARK 3 REMARK 3 CONFORMATIONAL TORSION ANGLE RESTRAINTS. REMARK 3 SPECIFIED (DEGREES) : NULL ; NULL REMARK 3 PLANAR (DEGREES) : NULL ; NULL REMARK 3 STAGGERED (DEGREES) : NULL ; NULL REMARK 3 TRANSVERSE (DEGREES) : NULL ; 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 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1KL1 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 19-DEC-01. REMARK 100 THE DEPOSITION ID IS D_1000015067. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 01-JUN-01 REMARK 200 TEMPERATURE (KELVIN) : 100 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 : RIGAKU RU300 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : MAR MIRRORS REMARK 200 OPTICS : 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 : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 27979 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.930 REMARK 200 RESOLUTION RANGE LOW (A) : 15.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.6 REMARK 200 DATA REDUNDANCY : 2.880 REMARK 200 R MERGE (I) : 0.04300 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 22.8000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.93 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.00 REMARK 200 COMPLETENESS FOR SHELL (%) : 90.2 REMARK 200 DATA REDUNDANCY IN SHELL : 2.65 REMARK 200 R MERGE FOR SHELL (I) : 0.07300 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: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: CCP4 REMARK 200 STARTING MODEL: 1KKJ REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 39.43 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.03 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: HEPES MPD, PH 7.5, VAPOR DIFFUSION, REMARK 280 HANGING DROP, TEMPERATURE 298.0K 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 30.63300 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 53.20000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 30.63300 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 53.20000 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: 8420 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 26830 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -45.0 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 0.00000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 0.00000 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 PRO A 406 REMARK 465 THR A 407 REMARK 465 SER A 408 REMARK 465 ARG A 409 REMARK 465 SER A 410 REMARK 465 ALA A 411 REMARK 465 ALA A 412 REMARK 465 GLY A 413 REMARK 465 THR A 414 REMARK 465 MET A 415 REMARK 465 GLU A 416 REMARK 465 PHE A 417 REMARK 465 GLU A 418 REMARK 465 ALA A 419 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 ALA A 171 N - CA - CB ANGL. DEV. = -9.2 DEGREES REMARK 500 PHE A 251 CA - C - O ANGL. DEV. = -15.3 DEGREES REMARK 500 PRO A 252 CA - N - CD ANGL. DEV. = -9.8 DEGREES REMARK 500 PRO A 252 N - CA - CB ANGL. DEV. = 8.5 DEGREES REMARK 500 ARG A 397 CD - NE - CZ ANGL. DEV. = 22.1 DEGREES REMARK 500 ARG A 397 NE - CZ - NH1 ANGL. DEV. = 4.0 DEGREES REMARK 500 ARG A 397 NE - CZ - NH2 ANGL. DEV. = -7.5 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 LYS A 2 -44.80 -131.24 REMARK 500 ALA A 52 50.63 -144.27 REMARK 500 ARG A 58 50.24 -143.95 REMARK 500 ALA A 170 168.80 109.23 REMARK 500 ALA A 173 50.26 -152.31 REMARK 500 LYS A 226 -113.02 -93.81 REMARK 500 ASN A 310 -140.38 -135.85 REMARK 500 THR A 353 164.62 67.00 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS REMARK 500 REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH REMARK 500 CIS AND TRANS CONFORMATION. CIS BONDS, IF ANY, ARE LISTED REMARK 500 ON CISPEP RECORDS. TRANS IS DEFINED AS 180 +/- 30 AND REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES. REMARK 500 MODEL OMEGA REMARK 500 PHE A 251 PRO A 252 48.92 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY REMARK 500 REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 500 I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI ANGLE REMARK 500 PHE A 251 17.92 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 PLP A 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE GLY A 601 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1KKJ RELATED DB: PDB REMARK 900 1KKJ IS THE NATIVE PROTEIN ( WITHOUT SUBSTRATE) REMARK 900 RELATED ID: 1KKP RELATED DB: PDB REMARK 900 1KKP IS SHMT COMPLEXED WITH SERINE SUBSTRATE REMARK 900 RELATED ID: 1KL2 RELATED DB: PDB REMARK 900 1KL2 IS SHMT COMPLEXED WITH GLYCINE AND 5-FORMYL TETRAHYDROFOLATE REMARK 999 REMARK 999 SEQUENCE REMARK 999 AN APPROPRIATE SEQUENCE DATABASE REFERENCE REMARK 999 WAS NOT AVAILABLE AT THE TIME OF PROCESSING. REMARK 999 ALSO, RESIDUES 403-419 ARE CLONING ARTIFACTS. DBREF 1KL1 A 1 419 UNP Q7SIB6 Q7SIB6_BACST 1 419 SEQRES 1 A 419 MET LYS TYR LEU PRO GLN GLN ASP PRO GLN VAL PHE ALA SEQRES 2 A 419 ALA ILE GLU GLN GLU ARG LYS ARG GLN HIS ALA LYS ILE SEQRES 3 A 419 GLU LEU ILE ALA SER GLU ASN PHE VAL SER ARG ALA VAL SEQRES 4 A 419 MET GLU ALA GLN GLY SER VAL LEU THR ASN LYS TYR ALA SEQRES 5 A 419 GLU GLY TYR PRO GLY ARG ARG TYR TYR GLY GLY CYS GLU SEQRES 6 A 419 TYR VAL ASP ILE VAL GLU GLU LEU ALA ARG GLU ARG ALA SEQRES 7 A 419 LYS GLN LEU PHE GLY ALA GLU HIS ALA ASN VAL GLN PRO SEQRES 8 A 419 HIS SER GLY ALA GLN ALA ASN MET ALA VAL TYR PHE THR SEQRES 9 A 419 VAL LEU GLU HIS GLY ASP THR VAL LEU GLY MET ASN LEU SEQRES 10 A 419 SER HIS GLY GLY HIS LEU THR HIS GLY SER PRO VAL ASN SEQRES 11 A 419 PHE SER GLY VAL GLN TYR ASN PHE VAL ALA TYR GLY VAL SEQRES 12 A 419 ASP PRO GLU THR HIS VAL ILE ASP TYR ASP ASP VAL ARG SEQRES 13 A 419 GLU LYS ALA ARG LEU HIS ARG PRO LYS LEU ILE VAL ALA SEQRES 14 A 419 ALA ALA SER ALA TYR PRO ARG ILE ILE ASP PHE ALA LYS SEQRES 15 A 419 PHE ARG GLU ILE ALA ASP GLU VAL GLY ALA TYR LEU MET SEQRES 16 A 419 VAL ASP MET ALA HIS ILE ALA GLY LEU VAL ALA ALA GLY SEQRES 17 A 419 LEU HIS PRO ASN PRO VAL PRO TYR ALA HIS PHE VAL THR SEQRES 18 A 419 THR THR THR HIS LYS THR LEU ARG GLY PRO ARG GLY GLY SEQRES 19 A 419 MET ILE LEU CYS GLN GLU GLN PHE ALA LYS GLN ILE ASP SEQRES 20 A 419 LYS ALA ILE PHE PRO GLY ILE GLN GLY GLY PRO LEU MET SEQRES 21 A 419 HIS VAL ILE ALA ALA LYS ALA VAL ALA PHE GLY GLU ALA SEQRES 22 A 419 LEU GLN ASP ASP PHE LYS ALA TYR ALA LYS ARG VAL VAL SEQRES 23 A 419 ASP ASN ALA LYS ARG LEU ALA SER ALA LEU GLN ASN GLU SEQRES 24 A 419 GLY PHE THR LEU VAL SER GLY GLY THR ASP ASN HIS LEU SEQRES 25 A 419 LEU LEU VAL ASP LEU ARG PRO GLN GLN LEU THR GLY LYS SEQRES 26 A 419 THR ALA GLU LYS VAL LEU ASP GLU VAL GLY ILE THR VAL SEQRES 27 A 419 ASN LYS ASN THR ILE PRO TYR ASP PRO GLU SER PRO PHE SEQRES 28 A 419 VAL THR SER GLY ILE ARG ILE GLY THR ALA ALA VAL THR SEQRES 29 A 419 THR ARG GLY PHE GLY LEU GLU GLU MET ASP GLU ILE ALA SEQRES 30 A 419 ALA ILE ILE GLY LEU VAL LEU LYS ASN VAL GLY SER GLU SEQRES 31 A 419 GLN ALA LEU GLU GLU ALA ARG GLN ARG VAL ALA ALA LEU SEQRES 32 A 419 THR ASP PRO THR SER ARG SER ALA ALA GLY THR MET GLU SEQRES 33 A 419 PHE GLU ALA HET PLP A 501 15 HET GLY A 601 5 HETNAM PLP PYRIDOXAL-5'-PHOSPHATE HETNAM GLY GLYCINE HETSYN PLP VITAMIN B6 PHOSPHATE FORMUL 2 PLP C8 H10 N O6 P FORMUL 3 GLY C2 H5 N O2 FORMUL 4 HOH *245(H2 O) HELIX 1 1 LYS A 2 ASP A 8 1 7 HELIX 2 2 ASP A 8 LYS A 25 1 18 HELIX 3 3 SER A 36 GLY A 44 1 9 HELIX 4 4 SER A 45 LYS A 50 5 6 HELIX 5 5 CYS A 64 GLY A 83 1 20 HELIX 6 6 SER A 93 LEU A 106 1 14 HELIX 7 7 LEU A 117 GLY A 120 5 4 HELIX 8 8 HIS A 122 GLY A 126 5 5 HELIX 9 9 ASN A 130 TYR A 136 1 7 HELIX 10 10 ASP A 151 ARG A 163 1 13 HELIX 11 11 ASP A 179 GLY A 191 1 13 HELIX 12 12 ILE A 201 ALA A 207 1 7 HELIX 13 13 GLN A 239 PHE A 251 1 13 HELIX 14 14 LEU A 259 GLN A 275 1 17 HELIX 15 15 GLN A 275 GLU A 299 1 25 HELIX 16 16 SER A 305 GLY A 307 5 3 HELIX 17 17 ARG A 318 GLN A 321 5 4 HELIX 18 18 THR A 323 VAL A 334 1 12 HELIX 19 19 THR A 360 ARG A 366 1 7 HELIX 20 20 GLY A 369 LYS A 385 1 17 HELIX 21 21 SER A 389 ASP A 405 1 17 SHEET 1 A 2 ILE A 26 GLU A 27 0 SHEET 2 A 2 ILE A 336 THR A 337 1 O THR A 337 N ILE A 26 SHEET 1 B 2 GLY A 54 TYR A 55 0 SHEET 2 B 2 ARG A 58 ARG A 59 -1 O ARG A 58 N TYR A 55 SHEET 1 C 7 HIS A 86 ASN A 88 0 SHEET 2 C 7 GLY A 234 CYS A 238 -1 O ILE A 236 N ASN A 88 SHEET 3 C 7 PHE A 219 THR A 223 -1 N VAL A 220 O LEU A 237 SHEET 4 C 7 TYR A 193 ASP A 197 1 N VAL A 196 O THR A 221 SHEET 5 C 7 LEU A 166 ALA A 169 1 N ILE A 167 O MET A 195 SHEET 6 C 7 THR A 111 MET A 115 1 N LEU A 113 O VAL A 168 SHEET 7 C 7 ASN A 137 TYR A 141 1 O VAL A 139 N VAL A 112 SHEET 1 D 4 THR A 302 LEU A 303 0 SHEET 2 D 4 LEU A 312 ASP A 316 -1 O ASP A 316 N THR A 302 SHEET 3 D 4 GLY A 355 GLY A 359 -1 O ILE A 358 N LEU A 313 SHEET 4 D 4 ASN A 339 LYS A 340 -1 N ASN A 339 O ARG A 357 LINK C4A PLP A 501 N GLY A 601 1555 1555 1.35 SITE 1 AC1 18 TYR A 51 SER A 93 GLY A 94 ALA A 95 SITE 2 AC1 18 HIS A 122 SER A 172 ASP A 197 ALA A 199 SITE 3 AC1 18 HIS A 200 THR A 223 HIS A 225 LYS A 226 SITE 4 AC1 18 GLY A 256 GLY A 257 GLY A 601 HOH A 689 SITE 5 AC1 18 HOH A 748 HOH A 837 SITE 1 AC2 8 SER A 31 TYR A 51 TYR A 61 HIS A 122 SITE 2 AC2 8 HIS A 200 LYS A 226 ARG A 357 PLP A 501 CRYST1 61.266 106.400 56.986 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 0.016320 0.000000 0.000000 0.00000 SCALE2 0.000000 0.009400 0.000000 0.00000 SCALE3 0.000000 0.000000 0.017550 0.00000