HEADER HYDROLASE(ACID PROTEINASE) 13-APR-94 1SIP TITLE ALTERNATIVE NATIVE FLAP CONFORMATION REVEALED BY 2.3 ANGSTROMS TITLE 2 RESOLUTION STRUCTURE OF SIV PROTEINASE COMPND MOL_ID: 1; COMPND 2 MOLECULE: UNLIGANDED SIV PROTEASE; COMPND 3 CHAIN: A; COMPND 4 EC: 3.4.23.-; COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: SIMIAN IMMUNODEFICIENCY VIRUS; SOURCE 3 ORGANISM_TAXID: 11723; SOURCE 4 CELL_LINE: S2; SOURCE 5 ORGAN: LEAVES KEYWDS HYDROLASE(ACID PROTEINASE) EXPDTA X-RAY DIFFRACTION AUTHOR A.F.WILDERSPIN REVDAT 5 14-FEB-24 1SIP 1 SEQADV REVDAT 4 13-JUL-11 1SIP 1 VERSN REVDAT 3 24-FEB-09 1SIP 1 VERSN REVDAT 2 01-APR-03 1SIP 1 JRNL REVDAT 1 31-AUG-94 1SIP 0 JRNL AUTH A.F.WILDERSPIN,R.J.SUGRUE JRNL TITL ALTERNATIVE NATIVE FLAP CONFORMATION REVEALED BY 2.3 A JRNL TITL 2 RESOLUTION STRUCTURE OF SIV PROTEINASE. JRNL REF J.MOL.BIOL. V. 239 97 1994 JRNL REFN ISSN 0022-2836 JRNL PMID 8196050 JRNL DOI 10.1006/JMBI.1994.1353 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH R.J.SUGRUE,N.ALMOND,P.KITCHIN,S.M.H.RICHARDSON, REMARK 1 AUTH 2 A.F.WILDERSPIN REMARK 1 TITL PURIFICATION OF CRYSTALLIZABLE RECOMBINANT SIVMAC251-32H REMARK 1 TITL 2 PROTEINASE REMARK 1 REF PROTEIN EXPR.PURIF. V. 5 76 1994 REMARK 1 REFN ISSN 1046-5928 REMARK 1 REFERENCE 2 REMARK 1 AUTH A.F.WILDERSPIN,R.J.SUGRUE REMARK 1 TITL CRYSTALLIZATION AND PRELIMINARY X-RAY INVESTIGATION OF REMARK 1 TITL 2 RECOMBINANT SIMIAN IMMUNODEFICIENCY VIRUS PROTEINASE REMARK 1 REF J.MOL.BIOL. V. 231 1139 1993 REMARK 1 REFN ISSN 0022-2836 REMARK 2 REMARK 2 RESOLUTION. 2.30 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : RESTRAIN REMARK 3 AUTHORS : MOSS,DRIESSEN,HANEEF,HOWLIN,HARRIS REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.30 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 8.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 97.7 REMARK 3 NUMBER OF REFLECTIONS : 4457 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) : 0.170 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 : 760 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 0 REMARK 3 SOLVENT ATOMS : 40 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 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 DISTANCE RESTRAINTS. RMS SIGMA REMARK 3 BOND LENGTH (A) : 0.018 ; 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: NULL REMARK 4 REMARK 4 1SIP 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_1000176387. 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 (%): 44.87 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.23 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 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 47.88000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 47.88000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 16.09000 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 31.26000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 16.09000 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 31.26000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 47.88000 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 16.09000 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 31.26000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 47.88000 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 16.09000 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 31.26000 REMARK 290 SMTRY3 8 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: 3560 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 9820 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -25.0 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 32.18000 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 47.88000 REMARK 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 HOH A 100 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 101 LIES ON A SPECIAL POSITION. 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 PHE A 3 C - N - CA ANGL. DEV. = 16.5 DEGREES REMARK 500 LEU A 5 CA - CB - CG ANGL. DEV. = -15.1 DEGREES REMARK 500 ARG A 8 CA - C - O ANGL. DEV. = -16.7 DEGREES REMARK 500 VAL A 10 CA - CB - CG2 ANGL. DEV. = 16.4 DEGREES REMARK 500 VAL A 10 O - C - N ANGL. DEV. = -9.6 DEGREES REMARK 500 VAL A 11 CA - CB - CG2 ANGL. DEV. = 15.6 DEGREES REMARK 500 VAL A 20 CA - CB - CG2 ANGL. DEV. = 14.3 DEGREES REMARK 500 GLU A 21 CA - CB - CG ANGL. DEV. = -18.5 DEGREES REMARK 500 VAL A 22 CA - CB - CG2 ANGL. DEV. = 14.0 DEGREES REMARK 500 LEU A 23 CB - CG - CD1 ANGL. DEV. = 16.4 DEGREES REMARK 500 LEU A 24 CA - C - O ANGL. DEV. = 15.3 DEGREES REMARK 500 LEU A 24 O - C - N ANGL. DEV. = -15.1 DEGREES REMARK 500 ASP A 25 O - C - N ANGL. DEV. = -11.3 DEGREES REMARK 500 ASP A 29 CB - CG - OD1 ANGL. DEV. = 5.6 DEGREES REMARK 500 VAL A 33 CA - CB - CG2 ANGL. DEV. = 9.4 DEGREES REMARK 500 VAL A 33 CA - C - O ANGL. DEV. = 13.3 DEGREES REMARK 500 VAL A 33 O - C - N ANGL. DEV. = -11.2 DEGREES REMARK 500 PRO A 40 C - N - CA ANGL. DEV. = 14.5 DEGREES REMARK 500 PRO A 40 C - N - CD ANGL. DEV. = -22.1 DEGREES REMARK 500 TYR A 42 CB - CG - CD1 ANGL. DEV. = -5.0 DEGREES REMARK 500 LYS A 45 O - C - N ANGL. DEV. = 11.4 DEGREES REMARK 500 VAL A 47 CG1 - CB - CG2 ANGL. DEV. = -14.8 DEGREES REMARK 500 TYR A 59 C - N - CA ANGL. DEV. = 15.4 DEGREES REMARK 500 TYR A 59 CB - CG - CD1 ANGL. DEV. = -3.7 DEGREES REMARK 500 TYR A 59 CG - CD1 - CE1 ANGL. DEV. = -5.0 DEGREES REMARK 500 LYS A 60 O - C - N ANGL. DEV. = 10.4 DEGREES REMARK 500 ASN A 61 O - C - N ANGL. DEV. = 11.6 DEGREES REMARK 500 VAL A 62 C - N - CA ANGL. DEV. = 16.0 DEGREES REMARK 500 LYS A 69 O - C - N ANGL. DEV. = 11.9 DEGREES REMARK 500 ARG A 70 CD - NE - CZ ANGL. DEV. = -9.1 DEGREES REMARK 500 ARG A 70 NE - CZ - NH1 ANGL. DEV. = -3.9 DEGREES REMARK 500 ARG A 72 NE - CZ - NH1 ANGL. DEV. = 4.1 DEGREES REMARK 500 GLY A 73 O - C - N ANGL. DEV. = 11.9 DEGREES REMARK 500 PRO A 81 C - N - CA ANGL. DEV. = 12.9 DEGREES REMARK 500 PRO A 81 C - N - CD ANGL. DEV. = -14.4 DEGREES REMARK 500 GLY A 86 CA - C - O ANGL. DEV. = -11.2 DEGREES REMARK 500 LEU A 93 C - N - CA ANGL. DEV. = 15.3 DEGREES REMARK 500 MET A 95 CG - SD - CE ANGL. DEV. = 12.6 DEGREES REMARK 500 ASN A 98 C - N - CA ANGL. DEV. = 16.9 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 LEU A 5 38.14 -92.25 REMARK 500 ASP A 79 37.76 -56.89 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 ARG A 7 0.23 SIDE CHAIN REMARK 500 ARG A 70 0.09 SIDE CHAIN REMARK 500 ARG A 72 0.12 SIDE CHAIN REMARK 500 ARG A 87 0.08 SIDE CHAIN REMARK 500 REMARK 500 REMARK: NULL REMARK 700 REMARK 700 SHEET REMARK 700 THE STRANDS IN THE *SHEET* RECORDS CORRESPOND TO THE REMARK 700 NOTATION IN *JRNL* AS FOLLOWS. 1=B, 2=C, 3=D', 4=D, 5=C', REMARK 700 6=B', 7=A'. REMARK 700 THE DIMER INTERFACE IS COMPOSED OF INTERDIGITATED N- AND REMARK 700 C-TERMINAL STRANDS FROM BOTH SUBUNITS FORMING A REMARK 700 FOUR-STRANDED ANTI-PARALLEL BETA-SHEET, S2. APPLICATION OF REMARK 700 THE TWO-FOLD ROTATION TO RESIDUES 2 - 4 AND 95 - 99 REMARK 700 GENERATES RESIDUES 2' - 4' AND 95' - 99', RESPECTIVELY. REMARK 700 BECAUSE OF THE LIMITATIONS IMPOSED BY THE PROTEIN DATA BANK REMARK 700 FORMAT, IT IS NOT POSSIBLE TO PRESENT THIS SHEET ON *SHEET* REMARK 700 RECORDS. INSTEAD THIS SHEET IS SPECIFIED IN THIS REMARK. REMARK 700 STRANDS 1 AND 3 ARE FROM THE MOLECULE IN THIS ENTRY, AND REMARK 700 ARE TERMED STRAND A AND STRAND T IN *JRNL*; STRANDS 2 AND REMARK 700 4 ARE FROM THE SYMMETRY-RELATED MOLECULE. REMARK 700 S2 4 GLN 2 SER 4 0 REMARK 700 S2 4 MET 95' PHE 99' -1 REMARK 700 S2 4 MET 95 PHE 99 -1 REMARK 700 S2 4 GLN 2' SER 4' -1 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: DTG REMARK 800 EVIDENCE_CODE: UNKNOWN REMARK 800 SITE_DESCRIPTION: NULL REMARK 999 REMARK 999 SEQUENCE REMARK 999 THERE ARE THREE SEQUENCE VARIATIONS BETWEEN SIVMAC251-32H REMARK 999 SHOWN IN SEQRES AND THE DATA BASE ENTRY FOR SIVMAC251, REMARK 999 NAMELY E63K, R72K AND F99L. THERE IS ONE VARIATION WITH REMARK 999 ENTRY SIVMAC239, NAMELY R72K. THESE VARIATIONS ARE REMARK 999 DESCRIBED IN REFERENCE 1. DBREF 1SIP A 1 98 UNP Q87706 Q87706_SIVCZ 106 203 SEQADV 1SIP ARG A 72 UNP Q87706 LYS 177 CONFLICT SEQRES 1 A 99 PRO GLN PHE SER LEU TRP ARG ARG PRO VAL VAL THR ALA SEQRES 2 A 99 HIS ILE GLU GLY GLN PRO VAL GLU VAL LEU LEU ASP THR SEQRES 3 A 99 GLY ALA ASP ASP SER ILE VAL THR GLY ILE GLU LEU GLY SEQRES 4 A 99 PRO HIS TYR THR PRO LYS ILE VAL GLY GLY ILE GLY GLY SEQRES 5 A 99 PHE ILE ASN THR LYS GLU TYR LYS ASN VAL GLU ILE GLU SEQRES 6 A 99 VAL LEU GLY LYS ARG ILE ARG GLY THR ILE MET THR GLY SEQRES 7 A 99 ASP THR PRO ILE ASN ILE PHE GLY ARG ASN LEU LEU THR SEQRES 8 A 99 ALA LEU GLY MET SER LEU ASN PHE FORMUL 2 HOH *40(H2 O) HELIX 1 H GLY A 86 LEU A 93 1 8 SHEET 1 S1 7 VAL A 10 ILE A 15 0 SHEET 2 S1 7 PRO A 19 LEU A 24 -1 O VAL A 20 N ALA A 13 SHEET 3 S1 7 ASN A 83 PHE A 85 1 O ASN A 83 N LEU A 23 SHEET 4 S1 7 SER A 31 VAL A 33 -1 O ILE A 32 N ILE A 84 SHEET 5 S1 7 ARG A 70 ASP A 79 1 O MET A 76 N VAL A 33 SHEET 6 S1 7 GLY A 52 GLU A 65 -1 N LYS A 57 O THR A 77 SHEET 7 S1 7 THR A 43 GLY A 49 -1 O LYS A 45 N THR A 56 SITE 1 DTG 3 ASP A 25 THR A 26 GLY A 27 CRYST1 32.180 62.520 95.760 90.00 90.00 90.00 C 2 2 21 8 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 0.031075 0.000000 0.000000 0.00000 SCALE2 0.000000 0.015995 0.000000 0.00000 SCALE3 0.000000 0.000000 0.010443 0.00000