PDB Short entry for 2APR HEADER HYDROLASE (ASPARTIC PROTEINASE) 19-MAR-87 2APR TITLE STRUCTURE AND REFINEMENT AT 1.8 ANGSTROMS RESOLUTION OF THE ASPARTIC TITLE 2 PROTEINASE FROM RHIZOPUS CHINENSIS COMPND MOL_ID: 1; COMPND 2 MOLECULE: RHIZOPUSPEPSIN; COMPND 3 CHAIN: A; COMPND 4 EC: 3.4.23.6; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RHIZOPUS MICROSPORUS VAR. CHINENSIS; SOURCE 3 ORGANISM_TAXID: 4843; SOURCE 4 STRAIN: VAR. CHINENSIS KEYWDS HYDROLASE (ASPARTIC PROTEINASE) EXPDTA X-RAY DIFFRACTION AUTHOR K.SUGUNA,D.R.DAVIES REVDAT 6 29-NOV-17 2APR 1 HELIX REVDAT 5 24-FEB-09 2APR 1 VERSN REVDAT 4 01-APR-03 2APR 1 JRNL REVDAT 3 15-JAN-91 2APR 2 CONECT REVDAT 2 16-JAN-88 2APR 2 JRNL CONECT REVDAT 1 16-JUL-87 2APR 0 SPRSDE 16-JUL-87 2APR 1APR JRNL AUTH K.SUGUNA,R.R.BOTT,E.A.PADLAN,E.SUBRAMANIAN,S.SHERIFF, JRNL AUTH 2 G.H.COHEN,D.R.DAVIES JRNL TITL STRUCTURE AND REFINEMENT AT 1.8 A RESOLUTION OF THE ASPARTIC JRNL TITL 2 PROTEINASE FROM RHIZOPUS CHINENSIS. JRNL REF J.MOL.BIOL. V. 196 877 1987 JRNL REFN ISSN 0022-2836 JRNL PMID 3316666 JRNL DOI 10.1016/0022-2836(87)90411-6 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH R.R.BOTT,E.SUBRAMANIAN,D.R.DAVIES REMARK 1 TITL THREE-DIMENSIONAL STRUCTURE OF THE COMPLEX OF THE RHIZOPUS REMARK 1 TITL 2 CHINENSIS CARBOXYL PROTEINASE AND PEPSTATIN AT 2.5 ANGSTROMS REMARK 1 TITL 3 RESOLUTION REMARK 1 REF BIOCHEMISTRY V. 21 6956 1982 REMARK 1 REFN ISSN 0006-2960 REMARK 1 REFERENCE 2 REMARK 1 AUTH E.SUBRAMANIAN,M.LIU,I.D.A.SWAN,D.R.DAVIES REMARK 1 TITL THE CRYSTAL STRUCTURE OF AN ACID PROTEASE FROM RHIZOPUS REMARK 1 TITL 2 CHINENSIS AT 2.5 ANGSTROMS RESOLUTION REMARK 1 REF ADV.EXP.MED.BIOL. V. 95 33 1977 REMARK 1 REFN ISSN 0065-2598 REMARK 1 REFERENCE 3 REMARK 1 AUTH E.SUBRAMANIAN,I.D.A.SWAN,M.LIU,D.R.DAVIES,J.A.JENKINS, REMARK 1 AUTH 2 I.J.TICKLE,T.L.BLUNDELL REMARK 1 TITL HOMOLOGY AMONG ACID PROTEASES. COMPARISON OF CRYSTAL REMARK 1 TITL 2 STRUCTURES AT 3 ANGSTROMS RESOLUTION OF ACID PROTEASES FROM REMARK 1 TITL 3 RHIZOPUS CHINENSIS AND ENDOTHIA PARASITICA REMARK 1 REF PROC.NATL.ACAD.SCI.USA V. 74 556 1977 REMARK 1 REFN ISSN 0027-8424 REMARK 2 REMARK 2 RESOLUTION. 1.80 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PROLSQ REMARK 3 AUTHORS : KONNERT,HENDRICKSON REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.80 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : NULL REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 31917 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 + TEST SET) : 0.143 REMARK 3 R VALUE (WORKING SET) : NULL REMARK 3 FREE R VALUE : NULL REMARK 3 FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 FREE R VALUE TEST SET COUNT : NULL REMARK 3 REMARK 3 FIT/AGREEMENT OF MODEL WITH ALL DATA. REMARK 3 R VALUE (WORKING + TEST SET, NO CUTOFF) : NULL 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) : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2403 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 1 REMARK 3 SOLVENT ATOMS : 373 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) : 0.16 REMARK 3 ESD FROM SIGMAA (A) : NULL REMARK 3 LOW RESOLUTION CUTOFF (A) : NULL REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.010 ; NULL REMARK 3 ANGLE DISTANCE (A) : NULL ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : NULL ; 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: THERE IS DISORDER AT SER 116, ARG 151, REMARK 3 ARG 192, SER 211. REMARK 4 REMARK 4 2APR COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL. REMARK 100 THE DEPOSITION ID IS D_1000177773. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : NULL REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : NULL REMARK 200 RADIATION SOURCE : NULL REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : NULL REMARK 200 WAVELENGTH OR RANGE (A) : NULL REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : NULL REMARK 200 DETECTOR MANUFACTURER : NULL REMARK 200 INTENSITY-INTEGRATION SOFTWARE : NULL REMARK 200 DATA SCALING SOFTWARE : NULL REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : NULL REMARK 200 RESOLUTION RANGE HIGH (A) : NULL REMARK 200 RESOLUTION RANGE LOW (A) : NULL REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : NULL REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : NULL REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : NULL REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : NULL REMARK 200 COMPLETENESS FOR SHELL (%) : NULL REMARK 200 DATA REDUNDANCY IN SHELL : NULL REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: NULL REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 57.11 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.87 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL 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 30.15500 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 53.48500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 30.30000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 53.48500 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 30.15500 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 30.30000 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 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 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 ARG A 109 NE - CZ - NH1 ANGL. DEV. = 5.0 DEGREES REMARK 500 ARG A 109 NE - CZ - NH2 ANGL. DEV. = -3.4 DEGREES REMARK 500 ARG A 134 NE - CZ - NH1 ANGL. DEV. = 3.1 DEGREES REMARK 500 ARG A 201 NE - CZ - NH1 ANGL. DEV. = 4.8 DEGREES REMARK 500 ARG A 236 NE - CZ - NH1 ANGL. DEV. = 3.7 DEGREES REMARK 500 ARG A 236 NE - CZ - NH2 ANGL. DEV. = -4.8 DEGREES REMARK 500 ASP A 242 CB - CG - OD2 ANGL. DEV. = -5.7 DEGREES REMARK 500 GLU A 325 CG - CD - OE1 ANGL. DEV. = 12.5 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 ASN A 50 27.07 -144.68 REMARK 500 ASN A 293 50.36 -95.03 REMARK 500 REMARK 500 REMARK: NULL REMARK 620 REMARK 620 METAL COORDINATION REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA A 326 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HOH A 718 O REMARK 620 2 GLY A 220 O 82.3 REMARK 620 3 HOH A 525 O 76.4 89.1 REMARK 620 4 HOH A 533 O 139.0 67.4 76.2 REMARK 620 5 HOH A 721 O 65.7 75.3 140.4 127.0 REMARK 620 6 HOH A 760 O 133.7 95.9 149.8 78.4 69.2 REMARK 620 7 HOH A 827 O 85.6 167.6 85.0 121.4 102.5 94.7 REMARK 620 N 1 2 3 4 5 6 REMARK 700 REMARK 700 SHEET REMARK 700 THERE ARE SEVERAL BIFURCATED SHEETS IN THIS STRUCTURE. REMARK 700 THESE ARE REPRESENTED BY TWO SHEETS WHICH HAVE ONE OR MORE REMARK 700 IDENTICAL STRANDS. SHEETS *S2A* AND *S2B* REPRESENT ONE REMARK 700 BIFURCATED SHEET. SHEETS *S3A* AND *S3B* REPRESENT ONE REMARK 700 BIFURCATED SHEET. SHEETS *S4A* AND *S4B* REPRESENT ONE REMARK 700 BIFURCATED SHEET. REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAT REMARK 800 EVIDENCE_CODE: AUTHOR REMARK 800 SITE_DESCRIPTION: CATALYTICALLY ACTIVE RESIDUES REMARK 800 REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 326 DBREF 2APR A 1 324 UNP P06026 CARP_RHICH 69 392 SEQADV 2APR ILE A 15 UNP P06026 VAL 83 CONFLICT SEQADV 2APR GLY A 54 UNP P06026 ARG 122 CONFLICT SEQADV 2APR ASN A 61 UNP P06026 LYS 129 CONFLICT SEQADV 2APR SER A 116 UNP P06026 ASN 184 CONFLICT SEQADV 2APR LYS A 162 UNP P06026 SER 230 CONFLICT SEQADV 2APR ILE A 230 UNP P06026 VAL 298 CONFLICT SEQADV 2APR ALA A 256 UNP P06026 ARG 324 CONFLICT SEQADV 2APR PHE A 281 UNP P06026 TYR 349 CONFLICT SEQADV 2APR TRP A 294 UNP P06026 PHE 362 CONFLICT SEQADV 2APR GLY A 295 UNP P06026 ASP 363 CONFLICT SEQRES 1 A 325 ALA GLY VAL GLY THR VAL PRO MET THR ASP TYR GLY ASN SEQRES 2 A 325 ASP ILE GLU TYR TYR GLY GLN VAL THR ILE GLY THR PRO SEQRES 3 A 325 GLY LYS LYS PHE ASN LEU ASP PHE ASP THR GLY SER SER SEQRES 4 A 325 ASP LEU TRP ILE ALA SER THR LEU CYS THR ASN CYS GLY SEQRES 5 A 325 SER GLY GLN THR LYS TYR ASP PRO ASN GLN SER SER THR SEQRES 6 A 325 TYR GLN ALA ASP GLY ARG THR TRP SER ILE SER TYR GLY SEQRES 7 A 325 ASP GLY SER SER ALA SER GLY ILE LEU ALA LYS ASP ASN SEQRES 8 A 325 VAL ASN LEU GLY GLY LEU LEU ILE LYS GLY GLN THR ILE SEQRES 9 A 325 GLU LEU ALA LYS ARG GLU ALA ALA SER PHE ALA SER GLY SEQRES 10 A 325 PRO ASN ASP GLY LEU LEU GLY LEU GLY PHE ASP THR ILE SEQRES 11 A 325 THR THR VAL ARG GLY VAL LYS THR PRO MET ASP ASN LEU SEQRES 12 A 325 ILE SER GLN GLY LEU ILE SER ARG PRO ILE PHE GLY VAL SEQRES 13 A 325 TYR LEU GLY LYS ALA LYS ASN GLY GLY GLY GLY GLU TYR SEQRES 14 A 325 ILE PHE GLY GLY TYR ASP SER THR LYS PHE LYS GLY SER SEQRES 15 A 325 LEU THR THR VAL PRO ILE ASP ASN SER ARG GLY TRP TRP SEQRES 16 A 325 GLY ILE THR VAL ASP ARG ALA THR VAL GLY THR SER THR SEQRES 17 A 325 VAL ALA SER SER PHE ASP GLY ILE LEU ASP THR GLY THR SEQRES 18 A 325 THR LEU LEU ILE LEU PRO ASN ASN ILE ALA ALA SER VAL SEQRES 19 A 325 ALA ARG ALA TYR GLY ALA SER ASP ASN GLY ASP GLY THR SEQRES 20 A 325 TYR THR ILE SER CYS ASP THR SER ALA PHE LYS PRO LEU SEQRES 21 A 325 VAL PHE SER ILE ASN GLY ALA SER PHE GLN VAL SER PRO SEQRES 22 A 325 ASP SER LEU VAL PHE GLU GLU PHE GLN GLY GLN CYS ILE SEQRES 23 A 325 ALA GLY PHE GLY TYR GLY ASN TRP GLY PHE ALA ILE ILE SEQRES 24 A 325 GLY ASP THR PHE LEU LYS ASN ASN TYR VAL VAL PHE ASN SEQRES 25 A 325 GLN GLY VAL PRO GLU VAL GLN ILE ALA PRO VAL ALA GLU HET CA A 326 1 HETNAM CA CALCIUM ION FORMUL 2 CA CA 2+ FORMUL 3 HOH *373(H2 O) HELIX 1 H1 PRO A 60 GLN A 62 5 3 HELIX 2 H2 ALA A 112 ALA A 115 1 4 HELIX 3 H3 ASP A 128 ILE A 130 5 3 HELIX 4 H4 PRO A 139 SER A 145 1 7 HELIX 5 H5 ALA A 161 ASN A 163 5 3 HELIX 6 H6 SER A 176 LYS A 178 5 3 HELIX 7 H7 ASN A 229 ALA A 237 1 9 HELIX 8 H8 PRO A 273 LEU A 276 5 4 HELIX 9 H9 ASP A 301 LEU A 304 1 4 SHEET 1 S1 6 THR A 5 PRO A 7 0 SHEET 2 S1 6 GLY A 167 PHE A 171 -1 N VAL A 6 O TYR A 169 SHEET 3 S1 6 ILE A 153 LEU A 158 -1 N TYR A 157 O GLU A 168 SHEET 4 S1 6 ASN A 307 ASN A 312 -1 N VAL A 156 O VAL A 309 SHEET 5 S1 6 GLU A 317 PRO A 322 -1 N VAL A 310 O GLN A 319 SHEET 6 S1 6 THR A 184 PRO A 187 -1 N VAL A 186 O VAL A 318 SHEET 1 S2A 3 LYS A 28 ASP A 33 0 SHEET 2 S2A 3 GLU A 16 GLY A 24 -1 N VAL A 21 O PHE A 30 SHEET 3 S2A 3 MET A 8 TYR A 11 -1 N THR A 9 O TYR A 18 SHEET 1 S2B 4 LYS A 28 ASP A 33 0 SHEET 2 S2B 4 GLU A 16 GLY A 24 -1 N VAL A 21 O PHE A 30 SHEET 3 S2B 4 ASN A 91 LEU A 94 -1 O ASN A 93 N THR A 22 SHEET 4 S2B 4 LEU A 97 LYS A 100 -1 O ILE A 99 N VAL A 92 SHEET 1 S3A 4 SER A 207 ALA A 210 0 SHEET 2 S3A 4 ARG A 201 VAL A 204 -1 N ALA A 202 O ALA A 210 SHEET 3 S3A 4 LEU A 260 ILE A 264 -1 O VAL A 261 N THR A 203 SHEET 4 S3A 4 ALA A 267 VAL A 271 -1 O PHE A 269 N PHE A 262 SHEET 1 S3B 2 GLY A 196 VAL A 199 0 SHEET 2 S3B 2 PHE A 213 LEU A 217 -1 O GLY A 215 N ILE A 197 SHEET 1 S4A 3 GLN A 67 ALA A 68 0 SHEET 2 S4A 3 SER A 82 LEU A 94 -1 O LYS A 89 N GLN A 67 SHEET 3 S4A 3 GLN A 102 ALA A 107 -1 O LEU A 106 N ILE A 86 SHEET 1 S4B 3 ARG A 71 SER A 76 0 SHEET 2 S4B 3 SER A 82 LEU A 94 -1 O GLY A 85 N TRP A 73 SHEET 3 S4B 3 LYS A 108 ALA A 111 -1 O ARG A 109 N SER A 84 SHEET 1 S5 4 SER A 241 ASN A 243 0 SHEET 2 S5 4 THR A 247 ILE A 250 -1 N ASN A 243 O THR A 247 SHEET 3 S5 4 GLN A 284 ALA A 287 -1 N ALA A 287 O TYR A 248 SHEET 4 S5 4 GLU A 279 PHE A 281 -1 N GLN A 284 O PHE A 281 SHEET 1 C1 3 LYS A 28 ASP A 35 0 SHEET 2 C1 3 GLY A 121 GLY A 124 1 N LEU A 123 O ASP A 33 SHEET 3 C1 3 ASP A 40 ALA A 44 -1 N TRP A 42 O LEU A 122 SHEET 1 C2 4 PHE A 213 LEU A 217 0 SHEET 2 C2 4 GLY A 295 GLY A 300 1 N ILE A 299 O ILE A 216 SHEET 3 C2 4 LEU A 224 PRO A 227 -1 N ILE A 225 O ILE A 298 SHEET 4 C2 4 PHE A 289 GLY A 292 1 N GLY A 290 O LEU A 224 SSBOND 1 CYS A 48 CYS A 51 1555 1555 2.03 SSBOND 2 CYS A 252 CYS A 285 1555 1555 2.04 LINK CA CA A 326 O HOH A 718 1555 1555 2.37 LINK CA CA A 326 O GLY A 220 1555 1555 2.34 LINK CA CA A 326 O HOH A 525 1555 1555 2.49 LINK CA CA A 326 O HOH A 533 1555 1555 2.40 LINK CA CA A 326 O HOH A 721 1555 1555 2.70 LINK CA CA A 326 O HOH A 760 1555 1555 2.38 LINK CA CA A 326 O HOH A 827 1555 1555 2.27 CISPEP 1 THR A 25 PRO A 26 0 1.03 CISPEP 2 VAL A 315 PRO A 316 0 -1.31 SITE 1 CAT 2 ASP A 35 ASP A 218 SITE 1 AC1 7 GLY A 220 HOH A 525 HOH A 533 HOH A 718 SITE 2 AC1 7 HOH A 721 HOH A 760 HOH A 827 CRYST1 60.310 60.600 106.970 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 0.016580 0.000000 0.000000 0.00000 SCALE2 0.000000 0.016500 0.000000 0.00000 SCALE3 0.000000 0.000000 0.009350 0.00000