HEADER ASPARTYL PROTEASE 23-JUN-97 1AM5 TITLE THE CRYSTAL STRUCTURE AND PROPOSED AMINO ACID SEQUENCE OF A PEPSIN TITLE 2 FROM ATLANTIC COD (GADUS MORHUA) COMPND MOL_ID: 1; COMPND 2 MOLECULE: PEPSIN; COMPND 3 CHAIN: A; COMPND 4 SYNONYM: ACID PROTEINASE; COMPND 5 EC: 3.4.23.1 SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: GADUS MORHUA; SOURCE 3 ORGANISM_COMMON: ATLANTIC COD; SOURCE 4 ORGANISM_TAXID: 8049; SOURCE 5 ORGAN: STOMACH; SOURCE 6 TISSUE: GASTRIC MUCOSA KEYWDS ASPARTYL PROTEASE, ACID PROTEINASE, HYDROLASE EXPDTA X-RAY DIFFRACTION AUTHOR S.KARLSEN,E.HOUGH,R.L.OLSEN REVDAT 6 13-NOV-24 1AM5 1 REMARK REVDAT 5 02-AUG-23 1AM5 1 REMARK REVDAT 4 18-APR-18 1AM5 1 REMARK REVDAT 3 24-FEB-09 1AM5 1 VERSN REVDAT 2 01-APR-03 1AM5 1 JRNL REVDAT 1 24-DEC-97 1AM5 0 JRNL AUTH S.KARLSEN,E.HOUGH,R.L.OLSEN JRNL TITL STRUCTURE AND PROPOSED AMINO-ACID SEQUENCE OF A PEPSIN FROM JRNL TITL 2 ATLANTIC COD (GADUS MORHUA). JRNL REF ACTA CRYSTALLOGR.,SECT.D V. 54 32 1998 JRNL REFN ISSN 0907-4449 JRNL PMID 9761815 JRNL DOI 10.1107/S090744499700810X REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH A.GILDBERG,R.L.OLSEN,J.B.BJARNASON REMARK 1 TITL CATALYTIC PROPERTIES AND CHEMICAL COMPOSITION OF PEPSINS REMARK 1 TITL 2 FROM ATLANTIC COD (GADUS MORHUA) REMARK 1 REF COMP.BIOCHEM.PHYSIOL. B: V. 96 323 1990 REMARK 1 REF 2 BIOCHEM.MOL.BIOL. REMARK 1 REFN ISSN 0305-0491 REMARK 2 REMARK 2 RESOLUTION. 2.16 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) : 2.16 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 8.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 3.000 REMARK 3 COMPLETENESS FOR RANGE (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : 13315 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) : 0.208 REMARK 3 FREE R VALUE : 0.224 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.000 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 : 2390 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 161 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 22.30 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 17.22 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) : 0.20 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) : 0.020 ; NULL REMARK 3 ANGLE DISTANCE (A) : 0.071 ; NULL REMARK 3 INTRAPLANAR 1-4 DISTANCE (A) : 0.091 ; 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) : 0.196 ; 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 1AM5 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_1000170988. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : OCT-95 REMARK 200 TEMPERATURE (KELVIN) : 291 REMARK 200 PH : 5.4 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 : BRUKER NONIUS REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : GRAPHITE(002) REMARK 200 OPTICS : COLLIMATOR REMARK 200 REMARK 200 DETECTOR TYPE : DIFFRACTOMETER REMARK 200 DETECTOR MANUFACTURER : ENRAF-NONIUS FAST REMARK 200 INTENSITY-INTEGRATION SOFTWARE : CCP4, MADNES REMARK 200 DATA SCALING SOFTWARE : CCP4 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 13687 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.160 REMARK 200 RESOLUTION RANGE LOW (A) : 20.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 1.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 83.7 REMARK 200 DATA REDUNDANCY : 2.700 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.06600 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 10.8000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.16 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.28 REMARK 200 COMPLETENESS FOR SHELL (%) : 41.4 REMARK 200 DATA REDUNDANCY IN SHELL : 1.40 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.22100 REMARK 200 <I/SIGMA(I)> FOR SHELL : 3.500 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: NULL REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: X-PLOR REMARK 200 STARTING MODEL: PDB ENTRY 5PEP REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 43.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.15 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 7.5 % 2-PROPANOL, 100 MM SODIUM REMARK 280 ACETATE PH 5.4 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 17.99000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 54.05000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 37.70000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 54.05000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 17.99000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 37.70000 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: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 NH2 ARG A 1 O HOH A 647 4558 1.46 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 ARG A 1 NE - CZ - NH1 ANGL. DEV. = -9.2 DEGREES REMARK 500 ARG A 1 NE - CZ - NH2 ANGL. DEV. = 5.4 DEGREES REMARK 500 ARG A 1 CA - C - O ANGL. DEV. = -16.4 DEGREES REMARK 500 ARG A 1 CA - C - N ANGL. DEV. = 18.4 DEGREES REMARK 500 ALA A 10 N - CA - CB ANGL. DEV. = -8.7 DEGREES REMARK 500 ASP A 11 CB - CG - OD1 ANGL. DEV. = 9.7 DEGREES REMARK 500 GLU A 13 O - C - N ANGL. DEV. = 12.1 DEGREES REMARK 500 SER A 19 CB - CA - C ANGL. DEV. = -12.9 DEGREES REMARK 500 PRO A 23 CA - N - CD ANGL. DEV. = -11.5 DEGREES REMARK 500 PRO A 23 N - CA - CB ANGL. DEV. = 6.8 DEGREES REMARK 500 ASP A 32 CB - CG - OD2 ANGL. DEV. = 7.5 DEGREES REMARK 500 SER A 36 CA - C - O ANGL. DEV. = -12.7 DEGREES REMARK 500 SER A 42 N - CA - CB ANGL. DEV. = 9.1 DEGREES REMARK 500 SER A 51 CB - CA - C ANGL. DEV. = -20.9 DEGREES REMARK 500 HIS A 53 CA - CB - CG ANGL. DEV. = -10.3 DEGREES REMARK 500 HIS A 53 CE1 - NE2 - CD2 ANGL. DEV. = 5.1 DEGREES REMARK 500 LYS A 55 CA - CB - CG ANGL. DEV. = 19.3 DEGREES REMARK 500 LYS A 55 CA - C - O ANGL. DEV. = 13.0 DEGREES REMARK 500 ARG A 59 CB - CA - C ANGL. DEV. = -12.7 DEGREES REMARK 500 ARG A 59 CD - NE - CZ ANGL. DEV. = 24.0 DEGREES REMARK 500 ARG A 59 NE - CZ - NH1 ANGL. DEV. = 8.0 DEGREES REMARK 500 ARG A 59 NE - CZ - NH2 ANGL. DEV. = -3.7 DEGREES REMARK 500 THR A 67 C - N - CA ANGL. DEV. = 20.5 DEGREES REMARK 500 THR A 67 N - CA - CB ANGL. DEV. = 16.6 DEGREES REMARK 500 ASP A 72 N - CA - CB ANGL. DEV. = 21.6 DEGREES REMARK 500 LEU A 73 CB - CA - C ANGL. DEV. = 14.4 DEGREES REMARK 500 LEU A 73 CA - C - O ANGL. DEV. = 14.5 DEGREES REMARK 500 LEU A 73 CA - C - N ANGL. DEV. = -15.0 DEGREES REMARK 500 THR A 74 N - CA - C ANGL. DEV. = -17.6 DEGREES REMARK 500 TYR A 75 CB - CG - CD1 ANGL. DEV. = -3.9 DEGREES REMARK 500 GLY A 76 N - CA - C ANGL. DEV. = -19.9 DEGREES REMARK 500 THR A 77 CA - C - O ANGL. DEV. = 22.1 DEGREES REMARK 500 THR A 77 O - C - N ANGL. DEV. = -17.4 DEGREES REMARK 500 GLY A 78 C - N - CA ANGL. DEV. = 42.9 DEGREES REMARK 500 GLY A 78 N - CA - C ANGL. DEV. = -24.3 DEGREES REMARK 500 MET A 80 CA - CB - CG ANGL. DEV. = 12.0 DEGREES REMARK 500 ARG A 81 CD - NE - CZ ANGL. DEV. = 49.3 DEGREES REMARK 500 ARG A 81 NH1 - CZ - NH2 ANGL. DEV. = 8.5 DEGREES REMARK 500 ARG A 81 NE - CZ - NH1 ANGL. DEV. = -6.1 DEGREES REMARK 500 GLY A 94 C - N - CA ANGL. DEV. = 15.8 DEGREES REMARK 500 GLY A 94 N - CA - C ANGL. DEV. = 19.1 DEGREES REMARK 500 SER A 95 N - CA - CB ANGL. DEV. = -18.9 DEGREES REMARK 500 SER A 95 N - CA - C ANGL. DEV. = 35.3 DEGREES REMARK 500 SER A 95 CA - C - O ANGL. DEV. = -13.5 DEGREES REMARK 500 SER A 95 CA - C - N ANGL. DEV. = 22.6 DEGREES REMARK 500 ASP A 96 CB - CA - C ANGL. DEV. = -15.8 DEGREES REMARK 500 ASP A 96 OD1 - CG - OD2 ANGL. DEV. = 18.6 DEGREES REMARK 500 ASP A 96 CB - CG - OD1 ANGL. DEV. = -12.8 DEGREES REMARK 500 ASP A 96 CB - CG - OD2 ANGL. DEV. = -5.7 DEGREES REMARK 500 ASN A 98 OD1 - CG - ND2 ANGL. DEV. = -14.9 DEGREES REMARK 500 REMARK 500 THIS ENTRY HAS 146 ANGLE DEVIATIONS. 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 ASP A 11 17.17 58.86 REMARK 500 SER A 43 25.54 -70.89 REMARK 500 ALA A 47 -178.17 -62.32 REMARK 500 THR A 77 104.90 23.43 REMARK 500 PHE A 111 -32.85 -157.06 REMARK 500 ALA A 124 -156.76 -75.58 REMARK 500 LYS A 188 -94.57 -126.93 REMARK 500 THR A 203 164.82 -48.73 REMARK 500 ALA A 204 9.27 -176.39 REMARK 500 ALA A 205 -16.87 172.16 REMARK 500 CYS A 249 -163.27 -72.38 REMARK 500 ALA A 250 -25.73 74.69 REMARK 500 GLN A 279 87.14 69.46 REMARK 500 ALA A 280 -9.88 95.12 REMARK 500 THR A 295 -113.70 -142.47 REMARK 500 GLU A 297 133.24 -33.37 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 THR A 77 GLY A 78 121.38 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: CAT REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: THE CATALYTIC ASPARTIC RESIDUES, ASP 32 AND ASP REMARK 800 215, ARE CONNECTED THROUGH A NETWORK OF HYDROGEN BONDS. REMARK 999 REMARK 999 SEQUENCE REMARK 999 THE AMINO ACID NUMBERING IS BASED ON THE SEQUENCE OF PEPSIN REMARK 999 FROM PORCINE. AS RESIDUE 207 AND 241 NOT ARE PRESENT IN REMARK 999 THE COD PEPSIN, THESE RESIDUES ARE DELETED IN THE REMARK 999 COORDINATE FILE. DBREF 1AM5 A 1 326 UNP P56272 PEP2B_GADMO 1 324 SEQRES 1 A 324 ARG VAL THR GLU GLN MET LYS ASN GLU ALA ASP THR GLU SEQRES 2 A 324 TYR TYR GLY VAL ILE SER ILE GLY THR PRO PRO GLU SER SEQRES 3 A 324 PHE LYS VAL ILE PHE ASP THR GLY SER SER ASN LEU TRP SEQRES 4 A 324 VAL SER SER SER HIS CYS SER ALA GLN ALA CYS SER ASN SEQRES 5 A 324 HIS ASN LYS PHE LYS PRO ARG GLN SER SER THR TYR VAL SEQRES 6 A 324 GLU THR GLY LYS THR VAL ASP LEU THR TYR GLY THR GLY SEQRES 7 A 324 GLY MET ARG GLY ILE LEU GLY GLN ASP THR VAL SER VAL SEQRES 8 A 324 GLY GLY GLY SER ASP PRO ASN GLN GLU LEU GLY GLU SER SEQRES 9 A 324 GLN THR GLU PRO GLY PRO PHE GLN ALA ALA ALA PRO PHE SEQRES 10 A 324 ASP GLY ILE LEU GLY LEU ALA TYR PRO SER ILE ALA ALA SEQRES 11 A 324 ALA GLY ALA VAL PRO VAL PHE ASP ASN MET GLY SER GLN SEQRES 12 A 324 SER LEU VAL GLU LYS ASP LEU PHE SER PHE TYR LEU SER SEQRES 13 A 324 GLY GLY GLY ALA ASN GLY SER GLU VAL MET LEU GLY GLY SEQRES 14 A 324 VAL ASP ASN SER HIS TYR THR GLY SER ILE HIS TRP ILE SEQRES 15 A 324 PRO VAL THR ALA GLU LYS TYR TRP GLN VAL ALA LEU ASP SEQRES 16 A 324 GLY ILE THR VAL ASN GLY GLN THR ALA ALA CYS GLU GLY SEQRES 17 A 324 CYS GLN ALA ILE VAL ASP THR GLY THR SER LYS ILE VAL SEQRES 18 A 324 ALA PRO VAL SER ALA LEU ALA ASN ILE MET LYS ASP ILE SEQRES 19 A 324 GLY ALA SER GLU ASN GLN GLY GLU MET MET GLY ASN CYS SEQRES 20 A 324 ALA SER VAL GLN SER LEU PRO ASP ILE THR PHE THR ILE SEQRES 21 A 324 ASN GLY VAL LYS GLN PRO LEU PRO PRO SER ALA TYR ILE SEQRES 22 A 324 GLU GLY ASP GLN ALA PHE CYS THR SER GLY LEU GLY SER SEQRES 23 A 324 SER GLY VAL PRO SER ASN THR SER GLU LEU TRP ILE PHE SEQRES 24 A 324 GLY ASP VAL PHE LEU ARG ASN TYR TYR THR ILE TYR ASP SEQRES 25 A 324 ARG THR ASN ASN LYS VAL GLY PHE ALA PRO ALA ALA FORMUL 2 HOH *161(H2 O) HELIX 1 1 GLN A 48 ASN A 52 1 5 HELIX 2 2 PRO A 58 GLN A 60 5 3 HELIX 3 3 PRO A 126 ILE A 128 5 3 HELIX 4 4 ALA A 130 GLY A 132 5 3 HELIX 5 5 VAL A 136 SER A 142 1 7 HELIX 6 6 ASN A 172 HIS A 174 5 3 HELIX 7 7 ALA A 227 ILE A 235 5 9 HELIX 8 8 PRO A 271 TYR A 274 1 4 HELIX 9 9 ASP A 303 ASN A 308 1 6 SHEET 1 A 6 VAL A 2 MET A 6 0 SHEET 2 A 6 SER A 163 LEU A 167 -1 N LEU A 167 O VAL A 2 SHEET 3 A 6 LEU A 150 TYR A 154 -1 N TYR A 154 O GLU A 164 SHEET 4 A 6 TYR A 309 ASP A 314 -1 N TYR A 313 O PHE A 151 SHEET 5 A 6 LYS A 319 PRO A 324 -1 N ALA A 323 O TYR A 310 SHEET 6 A 6 HIS A 180 PRO A 183 -1 N ILE A 182 O VAL A 320 SHEET 1 B 5 LYS A 7 GLU A 9 0 SHEET 2 B 5 GLU A 13 ILE A 20 -1 N TYR A 15 O LYS A 7 SHEET 3 B 5 GLU A 25 ASP A 32 -1 N VAL A 29 O GLY A 16 SHEET 4 B 5 GLY A 119 GLY A 122 1 N GLY A 119 O ILE A 30 SHEET 5 B 5 LEU A 38 VAL A 40 -1 N TRP A 39 O ILE A 120 SHEET 1 C 3 THR A 70 THR A 74 0 SHEET 2 C 3 GLY A 79 ASP A 87 -1 N GLY A 82 O VAL A 71 SHEET 3 C 3 GLN A 99 THR A 106 -1 N THR A 106 O ARG A 81 SHEET 1 D 3 GLN A 191 LEU A 194 0 SHEET 2 D 3 CYS A 210 VAL A 214 -1 N ALA A 212 O VAL A 192 SHEET 3 D 3 LEU A 298 PHE A 301 1 N TRP A 299 O GLN A 211 SHEET 1 E 3 GLY A 196 VAL A 199 0 SHEET 2 E 3 ILE A 258 ILE A 262 -1 N THR A 261 O GLY A 196 SHEET 3 E 3 VAL A 265 LEU A 269 -1 N LEU A 269 O ILE A 258 SHEET 1 F 2 ILE A 221 ALA A 223 0 SHEET 2 F 2 LEU A 286 SER A 288 1 N GLY A 287 O ILE A 221 SHEET 1 G 2 ILE A 275 GLY A 277 0 SHEET 2 G 2 CYS A 282 SER A 284 -1 N THR A 283 O GLU A 276 SSBOND 1 CYS A 45 CYS A 50 1555 1555 2.04 SSBOND 2 CYS A 206 CYS A 210 1555 1555 2.07 SSBOND 3 CYS A 249 CYS A 282 1555 1555 2.00 CISPEP 1 THR A 22 PRO A 23 0 -20.98 SITE 1 CAT 2 ASP A 32 ASP A 215 CRYST1 35.980 75.400 108.100 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 0.027793 0.000000 0.000000 0.00000 SCALE2 0.000000 0.013263 0.000000 0.00000 SCALE3 0.000000 0.000000 0.009251 0.00000