HEADER HYDROLASE (SERINE PROTEINASE) 25-APR-88 4PTP OBSLTE 07-JUL-97 4PTP 5PTP TITLE THE ACCURACY OF REFINED PROTEIN STRUCTURES, COMPARISON OF TITLE 2 TWO INDEPENDENTLY REFINED MODELS OF BOVINE TRYPSIN COMPND MOL_ID: 1; COMPND 2 MOLECULE:; COMPND 3 CHAIN: NULL; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1 KEYWDS HYDROLASE (SERINE PROTEINASE) EXPDTA X-RAY DIFFRACTION AUTHOR J.L.CHAMBERS,R.M.STROUD,J.FINER-MOORE REVDAT 1 16-JUL-88 4PTP 0 SPRSDE 16-JUL-88 4PTP 3PTP JRNL AUTH J.L.CHAMBERS,R.M.STROUD JRNL TITL THE ACCURACY OF REFINED PROTEIN STRUCTURES, JRNL TITL 2 COMPARISON OF TWO INDEPENDENTLY REFINED MODELS OF JRNL TITL 3 BOVINE TRYPSIN JRNL REF ACTA CRYSTALLOGR.,SECT.B V. 35 1861 1979 JRNL REFN ASTM ACBCAR DK ISSN 0567-7408 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH J.L.CHAMBERS,R.M.STROUD REMARK 1 TITL DIFFERENCE-FOURIER REFINEMENT OF THE STRUCTURE OF REMARK 1 TITL 2 /DIP-TRYPSIN AT 1.5 ANGSTROMS USING A MINICOMPUTER REMARK 1 TITL 3 TECHNIQUE REMARK 1 REF ACTA CRYSTALLOGR.,SECT.B V. 33 1824 1977 REMARK 1 REFN ASTM ACBCAR DK ISSN 0567-7408 REMARK 1 REFERENCE 2 REMARK 1 AUTH R.M.STROUD,M.KRIEGER,R.E.KOEPPEII,A.A.KOSSIAKOFF, REMARK 1 AUTH 2 J.L.CHAMBERS REMARK 1 TITL STRUCTURE-FUNCTION RELATIONSHIPS IN THE SERINE REMARK 1 TITL 2 PROTEASES REMARK 1 EDIT E.REICH, D.B.RIFKIN, E.SHAW REMARK 1 REF PROTEASES AND BIOLOGICAL 13 1975 REMARK 1 REF 2 CONTROL REMARK 1 PUBL COLD SPRING HARBOR LAB.,COLD SPRING HARBOR,N.Y. REMARK 1 REFN ISBN 0-87969-144-X REMARK 1 REFERENCE 3 REMARK 1 AUTH J.L.CHAMBERS,G.G.CHRISTOPH,M.KRIEGER,L.KAY, REMARK 1 AUTH 2 R.M.STROUD REMARK 1 TITL SILVER ION INHIBITION OF SERINE PROTEASES, REMARK 1 TITL 2 CRYSTALLOGRAPHIC STUDY OF SILVER-TRYPSIN REMARK 1 REF BIOCHEM.BIOPHYS.RES.COMM. V. 59 70 1974 REMARK 1 REFN ASTM BBRCA9 US ISSN 0006-291X REMARK 1 REFERENCE 4 REMARK 1 AUTH R.M.STROUD,L.M.KAY,R.E.DICKERSON REMARK 1 TITL THE STRUCTURE OF BOVINE TRYPSIN,ELECTRON DENSITY REMARK 1 TITL 2 MAPS OF THE INHIBITED ENZYME AT 5 ANGSTROMS AND AT REMARK 1 TITL 3 2.7 ANGSTROMS RESOLUTION REMARK 1 REF J.MOL.BIOL. V. 83 185 1974 REMARK 1 REFN ASTM JMOBAK UK ISSN 0022-2836 REMARK 1 REFERENCE 5 REMARK 1 AUTH M.KRIEGER,L.M.KAY,R.M.STROUD REMARK 1 TITL STRUCTURE AND SPECIFIC BINDING OF TRYPSIN, REMARK 1 TITL 2 COMPARISON OF INHIBITED DERIVATIVES AND A MODEL REMARK 1 TITL 3 FOR SUBSTRATE BINDING REMARK 1 REF J.MOL.BIOL. V. 83 209 1974 REMARK 1 REFN ASTM JMOBAK UK ISSN 0022-2836 REMARK 1 REFERENCE 6 REMARK 1 AUTH R.M.STROUD,L.M.KAY,R.E.DICKERSON REMARK 1 TITL THE CRYSTAL AND MOLECULAR STRUCTURE OF REMARK 1 TITL 2 /DIP-INHIBITED BOVINE TRYPSIN AT 2.7 ANGSTROMS REMARK 1 TITL 3 RESOLUTION REMARK 1 REF COLD SPRING HARBOR SYMP. V. 36 125 1972 REMARK 1 REF 2 QUANT.BIOL. REMARK 1 REFN ASTM CSHSAZ US ISSN 0091-7451 REMARK 1 REFERENCE 7 REMARK 1 EDIT M.O.DAYHOFF REMARK 1 REF ATLAS OF PROTEIN SEQUENCE V. 5 105 1972 REMARK 1 REF 2 AND STRUCTURE (DATA SECTION) REMARK 1 PUBL NATIONAL BIOMEDICAL RESEARCH FOUNDATION, SILVER REMARK 1 PUBL 2 SPRING,MD. REMARK 1 REFN ISBN 0-912466-02-2 REMARK 2 REMARK 2 RESOLUTION. 1.34 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : NULL REMARK 3 AUTHORS : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.34 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : NULL 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) (%) : NULL REMARK 3 NUMBER OF REFLECTIONS : NULL 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) : 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 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : NULL REMARK 3 BIN RESOLUTION RANGE HIGH (A) : NULL REMARK 3 BIN RESOLUTION RANGE LOW (A) : NULL REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 REFLECTIONS IN BIN (WORKING SET) : NULL REMARK 3 BIN R VALUE (WORKING SET) : NULL REMARK 3 BIN FREE R VALUE : NULL REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : NULL REMARK 3 BIN FREE R VALUE TEST SET COUNT : NULL 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 : 1629 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 8 REMARK 3 SOLVENT ATOMS : 168 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) : 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) : NULL REMARK 3 BOND ANGLES (DEGREES) : NULL 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) : 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 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 4PTP COMPLIES WITH FORMAT V. 2.3, 09-JULY-1998 REMARK 5 REMARK 5 4PTP SITE *BIN* IS THE SPECIFIC BINDING POCKET. ASP 189 AT REMARK 5 THE 4PTP BOTTOM OF THIS POCKET FORMS AN H-BOND TO THE REMARK 5 POSITIVELY 4PTP CHARGED SIDE CHAIN OF A SPECIFIC SUBSTRATE, REMARK 5 GIVING TRYPSIN 4PTP ITS SPECIFICITY FOR THIS TYPE OF SIDE REMARK 5 CHAIN. THE BACKBONE 4PTP IN THE REGION FROM SER 214 TO CYS REMARK 5 220 IS INVOLVED IN 4PTP HYDROGEN BONDING TO A PEPTIDE REMARK 5 SUBSTRATE. 4PTP REMARK 6 REMARK 6 4PTP SITE *ION* CONTAINS A TIGHTLY BOUND POSITIVE ION WHICH REMARK 6 IS 4PTP PROBABLY A CA2+ IN THIS STRUCTURE. THE ION IS GIVEN REMARK 6 4PTP SEQUENCE IDENTIFIER CA 247 AND OCCURS AMONG THE WATER REMARK 6 4PTP MOLECULES AT THE END OF THIS DATA ENTRY. THE ION IS REMARK 6 4PTP COORDINATED IN A ROUGHLY OCTAHEDRAL FASHION BY GLU 70, REMARK 6 4PTP ASN 72, VAL 75, GLU 80, HOH 341 AND HOH 342 AS REMARK 6 SPECIFIED IN 4PTP THE CONECT RECORDS. THIS REGION WAS FIRST REMARK 6 IDENTIFIED AS 4PTP THE PRIMARY CA2+ BINDING SITE OF TRYPSIN REMARK 6 BY BODE AND 4PTP SCHWAGER, F.E.B.S. LETT., VOL. 56, P139 REMARK 6 (1975). 4PTP REMARK 7 REMARK 7 4PTP THE TRYPSIN IN THE CRYSTAL CONTAINS ABOUT 50 PER-CENT REMARK 7 4PTP ALPHA-TRYPSIN WHICH IS AUTOLYTICALLY CLEAVED BETWEEN REMARK 7 4PTP LYS 145 AND SER 146. THE DENSITY IN THE MAP AT THIS REMARK 7 POINT 4PTP IS WEAK BUT APPEARS TO ARISE FROM THE UNCLEAVED REMARK 7 COMPONENT. 4PTP REMARK 8 REMARK 8 4PTP THE HYDROGEN BONDING BETWEEN STRANDS 4 AND 5 OF SHEET REMARK 8 4PTP *SH1* IS IRREGULAR. 4PTP REMARK 9 REMARK 9 4PTP COORDINATES FOR ONE OF THE ISOPROPYL GROUPS OF THE * REMARK 9 DIP* 4PTP INHIBITOR ARE NOT INCLUDED IN THIS ENTRY. IT IS REMARK 9 THOUGHT 4PTP THAT ONE ISOPROPYL GROUP HAS BEEN CLEAVED FROM REMARK 9 THE 4PTP INHIBITOR AND THAT THIS GROUP IS NOW A 4PTP REMARK 9 MONOISOPROPYLPHOSPHORYL DERIVATIVE. THE REFINED STRUCTURE REMARK 9 4PTP IN THIS REGION LOOKS VERY MUCH LIKE THAT EXPECTED FOR REMARK 9 THE 4PTP TETRAHEDRAL INTERMEDIATE IN THE REACTION SEQUENCE. REMARK 9 THE NE2 4PTP OF HIS 57 IS HYDROGEN-BONDED TO O1A OF THE DIP REMARK 9 GROUP, 4PTP WHICH CORRESPONDS TO THE LEAVING GROUP NITROGEN REMARK 9 OF A 4PTP SPECIFIC SUBSTRATE. 4PTP 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 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 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 (%): 47.08 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.32 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 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 27.42000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 33.73500 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 29.30500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 33.73500 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 27.42000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 29.30500 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 1 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 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI REMARK 500 O CYS 201 O HOH 369 0.82 REMARK 500 O TYR 59 O HOH 325 1.03 REMARK 500 C CYS 201 O HOH 369 1.33 REMARK 500 O HOH 363 O HOH 379 1.45 REMARK 500 OG SER 195 P DIP 246 1.53 REMARK 500 CA CYS 201 O HOH 369 1.96 REMARK 500 C TYR 59 O HOH 325 2.02 REMARK 500 O HOH 291 O HOH 337 2.02 REMARK 500 O HOH 333 O HOH 374 2.07 REMARK 500 CB CYS 201 O HOH 369 2.19 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 O HOH 379 O HOH 414 3645 0.60 REMARK 500 O HOH 363 O HOH 414 3645 1.17 REMARK 500 O HOH 379 O HOH 385 4456 1.33 REMARK 500 O HOH 385 O HOH 414 2665 1.79 REMARK 500 OH TYR 59 OD2 ASP 153 4456 1.86 REMARK 525 REMARK 525 SOLVENT REMARK 525 THE FOLLOWING SOLVENT MOLECULES LIE FARTHER THAN EXPECTED REMARK 525 FROM THE PROTEIN OR NUCLEIC ACID MOLECULE AND MAY BE REMARK 525 ASSOCIATED WITH A SYMMETRY RELATED MOLECULE (M=MODEL REMARK 525 NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH 251 DISTANCE = 5.74 ANGSTROMS REMARK 525 HOH 262 DISTANCE = 5.12 ANGSTROMS REMARK 525 HOH 277 DISTANCE = 5.00 ANGSTROMS REMARK 525 HOH 278 DISTANCE = 5.06 ANGSTROMS REMARK 525 HOH 280 DISTANCE = 5.34 ANGSTROMS REMARK 525 HOH 305 DISTANCE = 5.67 ANGSTROMS REMARK 525 HOH 320 DISTANCE = 5.63 ANGSTROMS REMARK 525 HOH 390 DISTANCE = 6.06 ANGSTROMS REMARK 525 HOH 391 DISTANCE = 7.67 ANGSTROMS REMARK 525 HOH 392 DISTANCE = 8.26 ANGSTROMS REMARK 525 HOH 394 DISTANCE = 8.05 ANGSTROMS REMARK 525 HOH 395 DISTANCE = 8.31 ANGSTROMS REMARK 525 HOH 396 DISTANCE = 8.49 ANGSTROMS REMARK 525 HOH 397 DISTANCE = 6.21 ANGSTROMS REMARK 525 HOH 398 DISTANCE = 9.77 ANGSTROMS REMARK 525 HOH 399 DISTANCE = 9.08 ANGSTROMS REMARK 525 HOH 400 DISTANCE = 6.25 ANGSTROMS REMARK 525 HOH 401 DISTANCE = 6.52 ANGSTROMS REMARK 525 HOH 402 DISTANCE = 7.98 ANGSTROMS REMARK 525 HOH 403 DISTANCE = 6.33 ANGSTROMS REMARK 525 HOH 404 DISTANCE = 6.63 ANGSTROMS REMARK 525 HOH 405 DISTANCE = 7.09 ANGSTROMS REMARK 525 HOH 406 DISTANCE = 6.55 ANGSTROMS REMARK 525 HOH 407 DISTANCE = 9.08 ANGSTROMS REMARK 525 HOH 408 DISTANCE = 8.42 ANGSTROMS REMARK 525 HOH 409 DISTANCE = 6.17 ANGSTROMS REMARK 525 HOH 410 DISTANCE = 13.53 ANGSTROMS REMARK 525 HOH 411 DISTANCE = 7.31 ANGSTROMS REMARK 525 HOH 412 DISTANCE = 6.72 ANGSTROMS REMARK 525 HOH 413 DISTANCE = 7.63 ANGSTROMS REMARK 525 HOH 414 DISTANCE = 9.73 ANGSTROMS REMARK 525 HOH 415 DISTANCE = 9.38 ANGSTROMS SEQRES 1 223 ILE VAL GLY GLY TYR THR CYS GLY ALA ASN THR VAL PRO SEQRES 2 223 TYR GLN VAL SER LEU ASN SER GLY TYR HIS PHE CYS GLY SEQRES 3 223 GLY SER LEU ILE ASN SER GLN TRP VAL VAL SER ALA ALA SEQRES 4 223 HIS CYS TYR LYS SER GLY ILE GLN VAL ARG LEU GLY GLU SEQRES 5 223 ASP ASN ILE ASN VAL VAL GLU GLY ASN GLU GLN PHE ILE SEQRES 6 223 SER ALA SER LYS SER ILE VAL HIS PRO SER TYR ASN SER SEQRES 7 223 ASN THR LEU ASN ASN ASP ILE MET LEU ILE LYS LEU LYS SEQRES 8 223 SER ALA ALA SER LEU ASN SER ARG VAL ALA SER ILE SER SEQRES 9 223 LEU PRO THR SER CYS ALA SER ALA GLY THR GLN CYS LEU SEQRES 10 223 ILE SER GLY TRP GLY ASN THR LYS SER SER GLY THR SER SEQRES 11 223 TYR PRO ASP VAL LEU LYS CYS LEU LYS ALA PRO ILE LEU SEQRES 12 223 SER ASP SER SER CYS LYS SER ALA TYR PRO GLY GLN ILE SEQRES 13 223 THR SER ASN MET PHE CYS ALA GLY TYR LEU GLU GLY GLY SEQRES 14 223 LYS ASP SER CYS GLN GLY ASP SER GLY GLY PRO VAL VAL SEQRES 15 223 CYS SER GLY LYS LEU GLN GLY ILE VAL SER TRP GLY SER SEQRES 16 223 GLY CYS ALA GLN LYS ASN LYS PRO GLY VAL TYR THR LYS SEQRES 17 223 VAL CYS ASN TYR VAL SER TRP ILE LYS GLN THR ILE ALA SEQRES 18 223 SER ASN HET CA 247 1 HET DIP 246 7 HETNAM CA CALCIUM ION HETNAM DIP DIPENTYLAMINE FORMUL 2 CA CA 2+ FORMUL 3 DIP C10 H23 N FORMUL 4 HOH *168(H2 O1) HELIX 1 SHO SER 164 TYR 172 1IRREGULAR AFTER CYS 168 9 HELIX 2 310 LYS 230 VAL 235 5LEADS INTO TERMINAL ALPHA-HLX 6 HELIX 3 TER TYR 234 ASN 245 1C-TERMINAL HELIX 12 SHEET 1 SH1 7 TYR 20 TYR 20 0 SHEET 2 SH1 7 LYS 156 PRO 161 -1 O CYS 157 N TYR 20 SHEET 3 SH1 7 CYS 136 GLY 140 -1 O CYS 136 N ALA 160 SHEET 4 SH1 7 GLY 197 CYS 201 -1 N VAL 200 O LEU 137 SHEET 5 SH1 7 LYS 204 TRP 215 -1 N VAL 213 O GLY 197 SHEET 6 SH1 7 GLY 226 VAL 231 -1 N VAL 227 O TRP 215 SHEET 7 SH1 7 ASN 179 ALA 183 -1 N ALA 183 O GLY 226 SHEET 1 SH2 4 GLY 43 SER 45 0 SHEET 2 SH2 4 VAL 52 ALA 55 -1 N VAL 53 O SER 45 SHEET 3 SH2 4 ILE 103 LYS 107 -1 O MET 104 N SER 54 SHEET 4 SH2 4 LYS 87 HIS 91 -1 N HIS 91 O ILE 103 SHEET 1 SH3 2 ILE 63 LEU 66 0 SHEET 2 SH3 2 GLN 81 ALA 85 -1 N GLN 81 O LEU 66 TURN 1 L03 ALA 56 TYR 59 LOOP CONTAINS ACTIVE SITE HIS TURN 2 L01 GLY 23 THR 26 TURN 3 L02 ASN 48 TRP 51 TURN 4 L04 HIS 91 TYR 94 MORE LIKE 3/10 HELIX THAN BEND TURN 5 L05 LEU 99 ASP 102 TURN 6 L06 ASN 115 VAL 118 3/10 LOOP ROUGHLY FORMED TURN 7 L07 SER 130 THR 134 SEQUENCE DELETION AT 131 TURN 8 L08 TYR 172 GLN 175 TURN 9 L09 THR 177 MET 180 TURN 10 L10 TYR 184A GLY 187 3/10 LOOP ROUGHLY FORMED TURN 11 L11 CYS 191 ASP 194 TURN 12 L12 ASP 194 GLY 197 CONTAINS ACTIVE SITE SERINE TURN 13 L13 CYS 201 LYS 204 TURN 14 L14 GLN 221A LYS 224 SSBOND 1 CYS 22 CYS 157 SSBOND 2 CYS 42 CYS 58 SSBOND 3 CYS 128 CYS 232 SSBOND 4 CYS 136 CYS 201 SSBOND 5 CYS 168 CYS 182 SSBOND 6 CYS 191 CYS 220 SITE 1 CAT 4 HIS 57 ASP 102 GLY 193 SER 195 SITE 1 BIN 10 ASP 189 SER 190 CYS 191 GLN 192 SITE 2 BIN 10 SER 214 TRP 215 GLY 216 SER 217 SITE 3 BIN 10 GLY 219 CYS 220 SITE 1 ION 11 GLU 70 ASP 71 ASN 72 ILE 73 SITE 2 ION 11 ASN 74 VAL 75 VAL 76 GLU 77 SITE 3 ION 11 GLY 78 ASN 79 GLU 80 CRYST1 54.840 58.610 67.470 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 0.018235 0.000000 0.000000 0.00000 SCALE2 0.000000 0.017062 0.000000 0.00000 SCALE3 0.000000 0.000000 0.014821 0.00000