HEADER HYDROLASE 03-MAY-01 1IKG TITLE MICHAELIS COMPLEX OF STREPTOMYCES R61 DD-PEPTIDASE WITH A SPECIFIC TITLE 2 PEPTIDOGLYCAN SUBSTRATE FRAGMENT COMPND MOL_ID: 1; COMPND 2 MOLECULE: D-ALANYL-D-ALANINE CARBOXYPEPTIDASE; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: DD-PEPTIDASE; COMPND 5 EC: 3.4.16.4 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STREPTOMYCES SP.; SOURCE 3 ORGANISM_TAXID: 31952; SOURCE 4 STRAIN: R61 KEYWDS MICHAELIS COMPLEX, PEPTIDOGLYCAN, PENICILLIN BINDING PROTEIN, KEYWDS 2 HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR M.A.MCDONOUGH,J.W.ANDERSON,N.R.SILVAGGI,R.F.PRATT,J.R.KNOX,J.A.KELLY REVDAT 8 16-OCT-24 1IKG 1 REMARK REVDAT 7 16-AUG-23 1IKG 1 REMARK REVDAT 6 31-JAN-18 1IKG 1 REMARK REVDAT 5 04-OCT-17 1IKG 1 REMARK REVDAT 4 13-JUL-11 1IKG 1 VERSN REVDAT 3 24-FEB-09 1IKG 1 VERSN REVDAT 2 01-APR-03 1IKG 1 JRNL REVDAT 1 11-SEP-02 1IKG 0 JRNL AUTH M.A.MCDONOUGH,J.W.ANDERSON,N.R.SILVAGGI,R.F.PRATT,J.R.KNOX, JRNL AUTH 2 J.A.KELLY JRNL TITL STRUCTURES OF TWO KINETIC INTERMEDIATES REVEAL SPECIES JRNL TITL 2 SPECIFICITY OF PENICILLIN-BINDING PROTEINS. JRNL REF J.MOL.BIOL. V. 322 111 2002 JRNL REFN ISSN 0022-2836 JRNL PMID 12215418 JRNL DOI 10.1016/S0022-2836(02)00742-8 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH W.LEE,M.A.MCDONOUGH,L.KOTRA,Z.H.LI,N.R.SILVAGGI,Y.TAKEDA, REMARK 1 AUTH 2 J.A.KELLY,S.MOBASHERY REMARK 1 TITL A 1.2-A SNAPSHOT OF THE FINAL STEP OF BACTERIAL CELL WALL REMARK 1 TITL 2 BIOSYNTHESIS REMARK 1 REF PROC.NATL.ACAD.SCI.USA V. 98 1427 2001 REMARK 1 REFN ISSN 0027-8424 REMARK 1 DOI 10.1073/PNAS.98.4.1427 REMARK 1 REFERENCE 2 REMARK 1 AUTH A.P.KUZIN,H.LIU,J.A.KELLY,J.R.KNOX REMARK 1 TITL BINDING OF CEPHALOTHIN AND CEFOTAXIME TO REMARK 1 TITL 2 D-ALA-D-ALA-PEPTIDASE REVEALS A FUNCTIONAL BASIS OF A REMARK 1 TITL 3 NATURAL MUTATION IN A LOW-AFFINITY PENICILLIN-BINDING REMARK 1 TITL 4 PROTEIN AND IN EXTENDED-SPECTRUM BETA-LACTAMASES REMARK 1 REF BIOCHEMISTRY V. 34 9532 1995 REMARK 1 REFN ISSN 0006-2960 REMARK 1 REFERENCE 3 REMARK 1 AUTH J.A.KELLY,A.P.KUZIN REMARK 1 TITL THE REFINED CRYSTALLOGRAPHIC STRUCTURE OF A DD-PEPTIDASE REMARK 1 TITL 2 PENICILLIN-TARGET ENZYME AT 1.6 A RESOLUTION REMARK 1 REF J.MOL.BIOL. V. 254 223 1995 REMARK 1 REFN ISSN 0022-2836 REMARK 1 DOI 10.1006/JMBI.1995.0613 REMARK 2 REMARK 2 RESOLUTION. 1.90 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) : 1.90 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 27.93 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 155199.090 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 92.5 REMARK 3 NUMBER OF REFLECTIONS : 25556 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) : 0.150 REMARK 3 FREE R VALUE : 0.184 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 REMARK 3 FREE R VALUE TEST SET COUNT : 1279 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) : 1.90 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.02 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 69.70 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2978 REMARK 3 BIN R VALUE (WORKING SET) : 0.1590 REMARK 3 BIN FREE R VALUE : 0.2270 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 5.20 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 162 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.018 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2602 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 26 REMARK 3 SOLVENT ATOMS : 355 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 7.70 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 9.90 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -3.11000 REMARK 3 B22 (A**2) : 1.82000 REMARK 3 B33 (A**2) : 1.29000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.15 REMARK 3 ESD FROM SIGMAA (A) : 0.02 REMARK 3 LOW RESOLUTION CUTOFF (A) : 30.0 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.20 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.14 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.012 REMARK 3 BOND ANGLES (DEGREES) : 1.600 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 23.70 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.980 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) : 2.160 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.630 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 3.140 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.760 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.37 REMARK 3 BSOL : 67.12 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 : REX.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 : REX.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1IKG COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 04-MAY-01. REMARK 100 THE DEPOSITION ID IS D_1000013363. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 13-NOV-99 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.8 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) : 1.542 REMARK 200 MONOCHROMATOR : NI FILTER REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : AREA DETECTOR REMARK 200 DETECTOR MANUFACTURER : SIEMENS HI-STAR REMARK 200 INTENSITY-INTEGRATION SOFTWARE : X-GEN REMARK 200 DATA SCALING SOFTWARE : X-GEN REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 26003 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.900 REMARK 200 RESOLUTION RANGE LOW (A) : 28.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 2.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.0 REMARK 200 DATA REDUNDANCY : 3.400 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.04400 REMARK 200 FOR THE DATA SET : 22.5000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.90 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.02 REMARK 200 COMPLETENESS FOR SHELL (%) : 70.0 REMARK 200 DATA REDUNDANCY IN SHELL : 2.40 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.08600 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: CNS REMARK 200 STARTING MODEL: PDB ENTRY 3PTE REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 45.90 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.27 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 8000, SODIUM PHOSPHATE, PH 6.8, REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 100K 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 -X+1/2,-Y,Z+1/2 REMARK 290 3555 -X,Y+1/2,-Z+1/2 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 25.43650 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 50.06450 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 33.41400 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 50.06450 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 25.43650 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 33.41400 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: 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 ALA A 1 REMARK 465 ASP A 2 REMARK 465 THR A 348 REMARK 465 THR A 349 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 SER A 62 3.51 -64.62 REMARK 500 ILE A 187 -56.83 -130.84 REMARK 500 GLN A 235 -112.94 47.74 REMARK 500 ASN A 324 57.18 -91.36 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 REX A 400 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1HVB RELATED DB: PDB REMARK 900 CRYSTAL STRUCTURE OF STREPTOMYCES R61 DD-PEPTIDASE COMPLEXED WITH A REMARK 900 NOVEL CEPHALOSPORIN ANALOG OF CELL WALL PEPTIDOGLYCAN REMARK 900 RELATED ID: 3PTE RELATED DB: PDB REMARK 900 NATIVE REMARK 900 RELATED ID: 1IKI RELATED DB: PDB REMARK 900 COMPLEX OF STREPTOMYCES R61 DD-PEPTIDASE WITH THE PRODUCTS OF A REMARK 900 SPECIFIC PEPTIDOGLYCAN SUBSTRATE FRAGMENT DBREF 1IKG A 1 349 UNP P15555 DAC_STRSR 32 380 SEQRES 1 A 349 ALA ASP LEU PRO ALA PRO ASP ASP THR GLY LEU GLN ALA SEQRES 2 A 349 VAL LEU HIS THR ALA LEU SER GLN GLY ALA PRO GLY ALA SEQRES 3 A 349 MET VAL ARG VAL ASP ASP ASN GLY THR ILE HIS GLN LEU SEQRES 4 A 349 SER GLU GLY VAL ALA ASP ARG ALA THR GLY ARG ALA ILE SEQRES 5 A 349 THR THR THR ASP ARG PHE ARG VAL GLY SER VAL THR LYS SEQRES 6 A 349 SER PHE SER ALA VAL VAL LEU LEU GLN LEU VAL ASP GLU SEQRES 7 A 349 GLY LYS LEU ASP LEU ASP ALA SER VAL ASN THR TYR LEU SEQRES 8 A 349 PRO GLY LEU LEU PRO ASP ASP ARG ILE THR VAL ARG GLN SEQRES 9 A 349 VAL MET SER HIS ARG SER GLY LEU TYR ASP TYR THR ASN SEQRES 10 A 349 ASP MET PHE ALA GLN THR VAL PRO GLY PHE GLU SER VAL SEQRES 11 A 349 ARG ASN LYS VAL PHE SER TYR GLN ASP LEU ILE THR LEU SEQRES 12 A 349 SER LEU LYS HIS GLY VAL THR ASN ALA PRO GLY ALA ALA SEQRES 13 A 349 TYR SER TYR SER ASN THR ASN PHE VAL VAL ALA GLY MET SEQRES 14 A 349 LEU ILE GLU LYS LEU THR GLY HIS SER VAL ALA THR GLU SEQRES 15 A 349 TYR GLN ASN ARG ILE PHE THR PRO LEU ASN LEU THR ASP SEQRES 16 A 349 THR PHE TYR VAL HIS PRO ASP THR VAL ILE PRO GLY THR SEQRES 17 A 349 HIS ALA ASN GLY TYR LEU THR PRO ASP GLU ALA GLY GLY SEQRES 18 A 349 ALA LEU VAL ASP SER THR GLU GLN THR VAL SER TRP ALA SEQRES 19 A 349 GLN SER ALA GLY ALA VAL ILE SER SER THR GLN ASP LEU SEQRES 20 A 349 ASP THR PHE PHE SER ALA LEU MET SER GLY GLN LEU MET SEQRES 21 A 349 SER ALA ALA GLN LEU ALA GLN MET GLN GLN TRP THR THR SEQRES 22 A 349 VAL ASN SER THR GLN GLY TYR GLY LEU GLY LEU ARG ARG SEQRES 23 A 349 ARG ASP LEU SER CYS GLY ILE SER VAL TYR GLY HIS THR SEQRES 24 A 349 GLY THR VAL GLN GLY TYR TYR THR TYR ALA PHE ALA SER SEQRES 25 A 349 LYS ASP GLY LYS ARG SER VAL THR ALA LEU ALA ASN THR SEQRES 26 A 349 SER ASN ASN VAL ASN VAL LEU ASN THR MET ALA ARG THR SEQRES 27 A 349 LEU GLU SER ALA PHE CYS GLY LYS PRO THR THR HET REX A 400 26 HETNAM REX GLYCYL-L-ALPHA-AMINO-EPSILON-PIMELYL-D-ALANYL-D-ALANINE FORMUL 2 REX C15 H26 N4 O7 FORMUL 3 HOH *355(H2 O) HELIX 1 1 ASP A 7 GLN A 21 1 15 HELIX 2 2 SER A 62 GLU A 78 1 17 HELIX 3 3 SER A 86 LEU A 91 1 6 HELIX 4 4 THR A 101 SER A 107 1 7 HELIX 5 5 TYR A 115 PHE A 120 1 6 HELIX 6 6 GLN A 122 ARG A 131 1 10 HELIX 7 7 SER A 136 LYS A 146 1 11 HELIX 8 8 SER A 160 GLY A 176 1 17 HELIX 9 9 SER A 178 ILE A 187 1 10 HELIX 10 10 ALA A 234 GLY A 238 5 5 HELIX 11 11 SER A 243 SER A 256 1 14 HELIX 12 12 SER A 261 GLN A 269 1 9 HELIX 13 13 ASN A 328 CYS A 344 1 17 SHEET 1 A 9 ARG A 50 ALA A 51 0 SHEET 2 A 9 THR A 35 ASP A 45 -1 N ALA A 44 O ARG A 50 SHEET 3 A 9 GLY A 25 ASP A 32 -1 N ALA A 26 O GLU A 41 SHEET 4 A 9 ARG A 317 ALA A 323 -1 O SER A 318 N ASP A 31 SHEET 5 A 9 TYR A 305 SER A 312 -1 N TYR A 306 O ALA A 323 SHEET 6 A 9 SER A 294 VAL A 302 -1 N TYR A 296 O ALA A 311 SHEET 7 A 9 ARG A 285 ASP A 288 -1 N ARG A 285 O GLY A 297 SHEET 8 A 9 GLN A 278 TYR A 280 -1 O GLY A 279 N ARG A 286 SHEET 9 A 9 THR A 272 ASN A 275 -1 N THR A 272 O TYR A 280 SHEET 1 B 2 PHE A 58 ARG A 59 0 SHEET 2 B 2 ILE A 241 SER A 242 -1 N SER A 242 O PHE A 58 SHEET 1 C 3 VAL A 224 ASP A 225 0 SHEET 2 C 3 TYR A 213 LEU A 214 -1 N LEU A 214 O VAL A 224 SHEET 3 C 3 THR A 325 SER A 326 1 N SER A 326 O TYR A 213 SSBOND 1 CYS A 291 CYS A 344 1555 1555 2.04 CISPEP 1 HIS A 200 PRO A 201 0 -0.16 SITE 1 AC1 21 GLY A 61 SER A 62 ARG A 99 PHE A 120 SITE 2 AC1 21 THR A 123 TYR A 159 ASN A 161 LEU A 214 SITE 3 AC1 21 TRP A 233 ALA A 237 ARG A 285 HIS A 298 SITE 4 AC1 21 THR A 299 GLY A 300 THR A 301 GLN A 303 SITE 5 AC1 21 SER A 326 ASN A 327 HOH A1067 HOH A1104 SITE 6 AC1 21 HOH A1161 CRYST1 50.873 66.828 100.129 90.00 90.00 90.00 P 21 21 21 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 0.019657 0.000000 0.000000 0.00000 SCALE2 0.000000 0.014964 0.000000 0.00000 SCALE3 0.000000 0.000000 0.009987 0.00000