10 20 30 40 50 60 70 80 1JAC - Header ----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----| Asymmetric UnitHEADER LECTIN 22-MAY-96 1JAC
TITLE A NOVEL MODE OF CARBOHYDRATE RECOGNITION IN JACALIN, A MORACEAE PLANT TITLE 2 LECTIN WITH A BETA-PRISM
COMPND MOL_ID: 1; COMPND 2 MOLECULE: JACALIN; COMPND 3 CHAIN: A, C, E, G; COMPND 4 SYNONYM: JACKFRUIT AGGLUTININ; COMPND 5 MOL_ID: 2; COMPND 6 MOLECULE: JACALIN; COMPND 7 CHAIN: B, D, F, H; COMPND 8 SYNONYM: JACKFRUIT AGGLUTININ
SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: ARTOCARPUS HETEROPHYLLUS; SOURCE 3 ORGANISM_COMMON: JACKFRUIT; SOURCE 4 ORGANISM_TAXID: 3489; SOURCE 5 MOL_ID: 2; SOURCE 6 ORGANISM_SCIENTIFIC: ARTOCARPUS HETEROPHYLLUS; SOURCE 7 ORGANISM_COMMON: JACKFRUIT; SOURCE 8 ORGANISM_TAXID: 3489
KEYWDS NON-LEGUME, LECTIN, BETA-PRISM FOLD, CARBOHYDRATE SPECIFICITY, KEYWDS 2 GLYCOPROTEIN
EXPDTA X-RAY DIFFRACTION
AUTHOR R.SANKARANARAYANAN,K.SEKAR,R.BANERJEE,V.SHARMA,A.SUROLIA,M.VIJAYAN
REVDAT 3 13-JUL-11 1JAC 1 VERSN REVDAT 2 24-FEB-09 1JAC 1 VERSN REVDAT 1 05-JUN-97 1JAC 0
JRNL AUTH R.SANKARANARAYANAN,K.SEKAR,R.BANERJEE,V.SHARMA,A.SUROLIA, JRNL AUTH 2 M.VIJAYAN JRNL TITL A NOVEL MODE OF CARBOHYDRATE RECOGNITION IN JACALIN, A JRNL TITL 2 MORACEAE PLANT LECTIN WITH A BETA-PRISM FOLD. JRNL REF NAT.STRUCT.BIOL. V. 3 596 1996 JRNL REFN ISSN 1072-8368 JRNL PMID 8673603 JRNL DOI 10.1038/NSB0796-596
REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH S.K.MAHANTA,S.SANKER,N.V.RAO,M.J.SWAMY,A.SUROLIA REMARK 1 TITL PRIMARY STRUCTURE OF A THOMSEN-FRIEDENREICH-ANTIGEN-SPECIFIC REMARK 1 TITL 2 LECTIN, JACALIN [ARTOCARPUS INTEGRIFOLIA (JACK FRUIT) REMARK 1 TITL 3 AGGLUTININ]. EVIDENCE FOR THE PRESENCE OF AN INTERNAL REPEAT REMARK 1 REF BIOCHEM.J. V. 284 95 1992 REMARK 1 REFN ISSN 0264-6021 REMARK 1 REFERENCE 2 REMARK 1 AUTH R.BANERJEE,V.DHANARAJ,S.K.MAHANTA,A.SUROLIA,M.VIJAYAN REMARK 1 TITL PREPARATION AND X-RAY CHARACTERIZATION OF FOUR NEW CRYSTAL REMARK 1 TITL 2 FORMS OF JACALIN, A LECTIN FROM ARTOCARPUS INTEGRIFOLIA REMARK 1 REF J.MOL.BIOL. V. 221 773 1991 REMARK 1 REFN ISSN 0022-2836 REMARK 1 REFERENCE 3 REMARK 1 AUTH V.DHANARAJ,S.R.PATANJALI,A.SUROLIA,M.VIJAYAN REMARK 1 TITL PREPARATION AND PRELIMINARY X-RAY STUDIES OF TWO CRYSTAL REMARK 1 TITL 2 FORMS OF THE ANTI-T LECTIN FROM JACKFRUIT (ARTOCARPUS REMARK 1 TITL 3 INTEGRIFOLIA) REMARK 1 REF J.MOL.BIOL. V. 203 1135 1988 REMARK 1 REFN ISSN 0022-2836
REMARK 2 REMARK 2 RESOLUTION. 2.43 ANGSTROMS.
REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.43 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 10.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 2.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 70.4 REMARK 3 NUMBER OF REFLECTIONS : 20822 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) : 0.174 REMARK 3 FREE R VALUE : 0.260 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 : 4580 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 52 REMARK 3 SOLVENT ATOMS : 323 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) : 0.011 REMARK 3 BOND ANGLES (DEGREES) : 1.88 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 27.80 REMARK 3 IMPROPER ANGLES (DEGREES) : 1.60 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 1JAC COMPLIES WITH FORMAT V. 3.30, 13-JUL-11
REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY BNL.
REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 1992 REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : NULL REMARK 200 NUMBER OF CRYSTALS USED : NULL REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : SEALED TUBE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : AREA DETECTOR REMARK 200 DETECTOR MANUFACTURER : SIEMENS REMARK 200 INTENSITY-INTEGRATION SOFTWARE : XENGEN REMARK 200 DATA SCALING SOFTWARE : XENGEN REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 23791 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 (%) : 78.0 REMARK 200 DATA REDUNDANCY : NULL REMARK 200 R MERGE (I) : 0.08000 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 (%): 58.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.86 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: NULL
REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 65 2 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+2/3 REMARK 290 3555 -X+Y,-X,Z+1/3 REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+1/6 REMARK 290 6555 X-Y,X,Z+5/6 REMARK 290 7555 Y,X,-Z+2/3 REMARK 290 8555 X-Y,-Y,-Z REMARK 290 9555 -X,-X+Y,-Z+1/3 REMARK 290 10555 -Y,-X,-Z+1/6 REMARK 290 11555 -X+Y,Y,-Z+1/2 REMARK 290 12555 X,X-Y,-Z+5/6 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 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 105.26667 REMARK 290 SMTRY1 3 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 3 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 52.63333 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 78.95000 REMARK 290 SMTRY1 5 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 5 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 26.31667 REMARK 290 SMTRY1 6 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 6 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 131.58333 REMARK 290 SMTRY1 7 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 7 0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 105.26667 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 8 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 9 -0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 9 -0.866025 0.500000 0.000000 0.00000 REMARK 290 SMTRY3 9 0.000000 0.000000 -1.000000 52.63333 REMARK 290 SMTRY1 10 0.500000 -0.866025 0.000000 0.00000 REMARK 290 SMTRY2 10 -0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 10 0.000000 0.000000 -1.000000 26.31667 REMARK 290 SMTRY1 11 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 11 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 11 0.000000 0.000000 -1.000000 78.95000 REMARK 290 SMTRY1 12 0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 12 0.866025 -0.500000 0.000000 0.00000 REMARK 290 SMTRY3 12 0.000000 0.000000 -1.000000 131.58333 REMARK 290 REMARK 290 REMARK: NULL
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
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: OCTAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: OCTAMERIC REMARK 350 SOFTWARE USED: PISA,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 12120 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 24950 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -74.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B, C, D 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 0.500000 0.866025 0.000000 -64.80000 REMARK 350 BIOMT2 2 0.866025 -0.500000 0.000000 112.23689 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 131.58333 REMARK 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: TETRAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 12150 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 24010 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -75.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: E, F, G, H 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 REMARK 350 BIOMOLECULE: 3 REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: OCTAMERIC REMARK 350 SOFTWARE USED: PQS REMARK 350 APPLY THE FOLLOWING TO CHAINS: E, F, G, H 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 0.500000 0.866025 0.000000 0.00000 REMARK 350 BIOMT2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 131.58333
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 ASN B 1 REMARK 465 GLU B 2 REMARK 465 GLN B 3 REMARK 465 VAL B 19 REMARK 465 SER B 20 REMARK 465 ASN D 1 REMARK 465 GLU D 2 REMARK 465 GLN D 3 REMARK 465 VAL D 19 REMARK 465 SER D 20 REMARK 465 ASN F 1 REMARK 465 GLU F 2 REMARK 465 GLN F 3 REMARK 465 VAL F 19 REMARK 465 SER F 20 REMARK 465 ASN H 1 REMARK 465 GLU H 2 REMARK 465 GLN H 3 REMARK 465 VAL H 19 REMARK 465 SER H 20
REMARK 480 REMARK 480 ZERO OCCUPANCY ATOM REMARK 480 THE FOLLOWING RESIDUES HAVE ATOMS MODELED WITH ZERO REMARK 480 OCCUPANCY. THE LOCATION AND PROPERTIES OF THESE ATOMS REMARK 480 MAY NOT BE RELIABLE. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 480 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 480 M RES C SSEQI ATOMS REMARK 480 SER B 4 OG REMARK 480 LYS B 18 CG CD CE NZ REMARK 480 GLU C 22 CB CG CD OE1 OE2 REMARK 480 ASN C 74 CG OD1 ND2 REMARK 480 SER D 4 OG REMARK 480 LYS D 18 CG CD CE NZ REMARK 480 GLU E 22 CB CG CD OE1 OE2 REMARK 480 SER F 4 OG REMARK 480 LYS F 18 CG CD CE NZ REMARK 480 GLU G 22 CB CG CD OE1 OE2 REMARK 480 GLN G 42 CG CD OE1 NE2 REMARK 480 ASN G 74 CG OD1 ND2 REMARK 480 SER H 4 OG REMARK 480 LYS H 18 CG CD CE NZ
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 DISTANCE REMARK 500 O HOH C 240 O HOH C 251 0.00 REMARK 500 NZ LYS D 18 O HOH D 171 1.16 REMARK 500 CB GLU C 22 O HOH C 242 1.58 REMARK 500 OE1 GLU C 22 O HOH C 242 1.68 REMARK 500 CE LYS F 18 O HOH F 291 2.08 REMARK 500 CD GLU C 22 O HOH C 242 2.10 REMARK 500 CG GLU C 22 O HOH C 242 2.12 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 SER D 14 N - CA - C ANGL. DEV. = -17.5 DEGREES REMARK 500 PHE G 60 N - CA - C ANGL. DEV. = 17.6 DEGREES REMARK 500 GLY H 13 N - CA - C ANGL. DEV. = 16.5 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 ASP A 5 103.73 -166.19 REMARK 500 PHE A 9 -164.54 -128.95 REMARK 500 THR A 23 -94.65 -105.20 REMARK 500 PHE A 60 -83.16 -10.28 REMARK 500 SER B 14 92.35 119.89 REMARK 500 PHE C 9 -160.44 -128.60 REMARK 500 THR C 23 -94.45 -120.22 REMARK 500 ALA C 24 -165.24 -160.89 REMARK 500 PHE C 60 -91.68 -0.38 REMARK 500 SER C 76 41.14 73.38 REMARK 500 THR C 99 58.57 -96.06 REMARK 500 SER D 14 88.64 122.35 REMARK 500 PHE E 9 -159.94 -131.55 REMARK 500 THR E 23 -91.16 -128.81 REMARK 500 ALA E 24 -157.91 -161.51 REMARK 500 THR E 49 -167.62 -119.97 REMARK 500 PHE E 60 -98.75 -5.20 REMARK 500 SER F 14 85.94 115.34 REMARK 500 ASP G 5 102.87 -166.78 REMARK 500 PHE G 9 -160.45 -120.54 REMARK 500 THR G 23 -100.73 -117.34 REMARK 500 PHE G 60 -78.77 -14.10 REMARK 500 LYS G 90 -56.14 -129.68 REMARK 500 SER H 14 91.57 116.15 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: MAIN CHAIN PLANARITY REMARK 500 REMARK 500 THE FOLLOWING RESIDUES HAVE A PSEUDO PLANARITY REMARK 500 TORSION ANGLE, C(I) - CA(I) - N(I+1) - O(I), GREATER REMARK 500 10.0 DEGREES. (M=MODEL NUMBER; RES=RESIDUE NAME; REMARK 500 C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 500 I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI ANGLE REMARK 500 VAL C 75 18.30 REMARK 500 THR G 23 11.97 REMARK 500 VAL G 75 11.77 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CHIRAL CENTERS REMARK 500 REMARK 500 UNEXPECTED CONFIGURATION OF THE FOLLOWING CHIRAL REMARK 500 CENTER(S) USING IMPROPER CA--C--CB--N CHIRALITY REMARK 500 FOR AMINO ACIDS AND C1'--O4'--N1(N9)--C2' FOR REMARK 500 NUCLEIC ACIDS OR EQUIVALENT ANGLE REMARK 500 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,A1,6X,F5.1,6X,A1,10X,A1,3X,A16) REMARK 500 REMARK 500 M RES CSSEQI IMPROPER EXPECTED FOUND DETAILS REMARK 500 PHE A 60 19.1 L L OUTSIDE RANGE REMARK 500 PHE C 60 20.4 L L OUTSIDE RANGE REMARK 500 PHE E 60 18.0 L L OUTSIDE RANGE REMARK 500 PHE G 60 18.2 L L OUTSIDE RANGE REMARK 500 REMARK 500 REMARK: NULL
REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A 217 DISTANCE = 6.54 ANGSTROMS REMARK 525 HOH A 238 DISTANCE = 6.00 ANGSTROMS REMARK 525 HOH A 239 DISTANCE = 5.29 ANGSTROMS REMARK 525 HOH A 253 DISTANCE = 5.44 ANGSTROMS REMARK 525 HOH A 263 DISTANCE = 5.69 ANGSTROMS REMARK 525 HOH A 264 DISTANCE = 5.58 ANGSTROMS REMARK 525 HOH C 209 DISTANCE = 6.12 ANGSTROMS REMARK 525 HOH C 213 DISTANCE = 5.39 ANGSTROMS REMARK 525 HOH C 216 DISTANCE = 6.70 ANGSTROMS REMARK 525 HOH C 217 DISTANCE = 5.90 ANGSTROMS REMARK 525 HOH C 240 DISTANCE = 6.69 ANGSTROMS REMARK 525 HOH C 251 DISTANCE = 6.69 ANGSTROMS REMARK 525 HOH D 42 DISTANCE = 5.67 ANGSTROMS REMARK 525 HOH E 216 DISTANCE = 6.35 ANGSTROMS REMARK 525 HOH E 236 DISTANCE = 6.39 ANGSTROMS REMARK 525 HOH E 237 DISTANCE = 5.34 ANGSTROMS REMARK 525 HOH E 248 DISTANCE = 7.55 ANGSTROMS REMARK 525 HOH E 254 DISTANCE = 5.44 ANGSTROMS REMARK 525 HOH G 201 DISTANCE = 5.51 ANGSTROMS REMARK 525 HOH G 216 DISTANCE = 6.42 ANGSTROMS REMARK 525 HOH G 237 DISTANCE = 5.56 ANGSTROMS REMARK 525 HOH G 251 DISTANCE = 7.30 ANGSTROMS REMARK 525 HOH G 263 DISTANCE = 5.41 ANGSTROMS REMARK 525 HOH G 264 DISTANCE = 5.23 ANGSTROMS REMARK 525 HOH H 142 DISTANCE = 6.52 ANGSTROMS REMARK 525 HOH H 143 DISTANCE = 7.31 ANGSTROMS
REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMG A 200 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMG C 200 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMG E 200 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC4 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE AMG G 200
DBREF 1JAC A 1 133 UNP P18670 LECA_ARTIN 1 133 DBREF 1JAC B 1 20 UNP P18671 LEC1_ARTIN 1 20 DBREF 1JAC C 1 133 UNP P18670 LECA_ARTIN 1 133 DBREF 1JAC D 1 20 UNP P18671 LEC1_ARTIN 1 20 DBREF 1JAC E 1 133 UNP P18670 LECA_ARTIN 1 133 DBREF 1JAC F 1 20 UNP P18671 LEC1_ARTIN 1 20 DBREF 1JAC G 1 133 UNP P18670 LECA_ARTIN 1 133 DBREF 1JAC H 1 20 UNP P18671 LEC1_ARTIN 1 20
SEQRES 1 A 133 GLY LYS ALA PHE ASP ASP GLY ALA PHE THR GLY ILE ARG SEQRES 2 A 133 GLU ILE ASN LEU SER TYR ASN LYS GLU THR ALA ILE GLY SEQRES 3 A 133 ASP PHE GLN VAL VAL TYR ASP LEU ASN GLY SER PRO TYR SEQRES 4 A 133 VAL GLY GLN ASN HIS LYS SER PHE ILE THR GLY PHE THR SEQRES 5 A 133 PRO VAL LYS ILE SER LEU ASP PHE PRO SER GLU TYR ILE SEQRES 6 A 133 MET GLU VAL SER GLY TYR THR GLY ASN VAL SER GLY TYR SEQRES 7 A 133 VAL VAL VAL ARG SER LEU THR PHE LYS THR ASN LYS LYS SEQRES 8 A 133 THR TYR GLY PRO TYR GLY VAL THR SER GLY THR PRO PHE SEQRES 9 A 133 ASN LEU PRO ILE GLU ASN GLY LEU ILE VAL GLY PHE LYS SEQRES 10 A 133 GLY SER ILE GLY TYR TRP LEU ASP TYR PHE SER MET TYR SEQRES 11 A 133 LEU SER LEU SEQRES 1 B 20 ASN GLU GLN SER GLY LYS SER GLN THR VAL ILE VAL GLY SEQRES 2 B 20 SER TRP GLY ALA LYS VAL SER SEQRES 1 C 133 GLY LYS ALA PHE ASP ASP GLY ALA PHE THR GLY ILE ARG SEQRES 2 C 133 GLU ILE ASN LEU SER TYR ASN LYS GLU THR ALA ILE GLY SEQRES 3 C 133 ASP PHE GLN VAL VAL TYR ASP LEU ASN GLY SER PRO TYR SEQRES 4 C 133 VAL GLY GLN ASN HIS LYS SER PHE ILE THR GLY PHE THR SEQRES 5 C 133 PRO VAL LYS ILE SER LEU ASP PHE PRO SER GLU TYR ILE SEQRES 6 C 133 MET GLU VAL SER GLY TYR THR GLY ASN VAL SER GLY TYR SEQRES 7 C 133 VAL VAL VAL ARG SER LEU THR PHE LYS THR ASN LYS LYS SEQRES 8 C 133 THR TYR GLY PRO TYR GLY VAL THR SER GLY THR PRO PHE SEQRES 9 C 133 ASN LEU PRO ILE GLU ASN GLY LEU ILE VAL GLY PHE LYS SEQRES 10 C 133 GLY SER ILE GLY TYR TRP LEU ASP TYR PHE SER MET TYR SEQRES 11 C 133 LEU SER LEU SEQRES 1 D 20 ASN GLU GLN SER GLY LYS SER GLN THR VAL ILE VAL GLY SEQRES 2 D 20 SER TRP GLY ALA LYS VAL SER SEQRES 1 E 133 GLY LYS ALA PHE ASP ASP GLY ALA PHE THR GLY ILE ARG SEQRES 2 E 133 GLU ILE ASN LEU SER TYR ASN LYS GLU THR ALA ILE GLY SEQRES 3 E 133 ASP PHE GLN VAL VAL TYR ASP LEU ASN GLY SER PRO TYR SEQRES 4 E 133 VAL GLY GLN ASN HIS LYS SER PHE ILE THR GLY PHE THR SEQRES 5 E 133 PRO VAL LYS ILE SER LEU ASP PHE PRO SER GLU TYR ILE SEQRES 6 E 133 MET GLU VAL SER GLY TYR THR GLY ASN VAL SER GLY TYR SEQRES 7 E 133 VAL VAL VAL ARG SER LEU THR PHE LYS THR ASN LYS LYS SEQRES 8 E 133 THR TYR GLY PRO TYR GLY VAL THR SER GLY THR PRO PHE SEQRES 9 E 133 ASN LEU PRO ILE GLU ASN GLY LEU ILE VAL GLY PHE LYS SEQRES 10 E 133 GLY SER ILE GLY TYR TRP LEU ASP TYR PHE SER MET TYR SEQRES 11 E 133 LEU SER LEU SEQRES 1 F 20 ASN GLU GLN SER GLY LYS SER GLN THR VAL ILE VAL GLY SEQRES 2 F 20 SER TRP GLY ALA LYS VAL SER SEQRES 1 G 133 GLY LYS ALA PHE ASP ASP GLY ALA PHE THR GLY ILE ARG SEQRES 2 G 133 GLU ILE ASN LEU SER TYR ASN LYS GLU THR ALA ILE GLY SEQRES 3 G 133 ASP PHE GLN VAL VAL TYR ASP LEU ASN GLY SER PRO TYR SEQRES 4 G 133 VAL GLY GLN ASN HIS LYS SER PHE ILE THR GLY PHE THR SEQRES 5 G 133 PRO VAL LYS ILE SER LEU ASP PHE PRO SER GLU TYR ILE SEQRES 6 G 133 MET GLU VAL SER GLY TYR THR GLY ASN VAL SER GLY TYR SEQRES 7 G 133 VAL VAL VAL ARG SER LEU THR PHE LYS THR ASN LYS LYS SEQRES 8 G 133 THR TYR GLY PRO TYR GLY VAL THR SER GLY THR PRO PHE SEQRES 9 G 133 ASN LEU PRO ILE GLU ASN GLY LEU ILE VAL GLY PHE LYS SEQRES 10 G 133 GLY SER ILE GLY TYR TRP LEU ASP TYR PHE SER MET TYR SEQRES 11 G 133 LEU SER LEU SEQRES 1 H 20 ASN GLU GLN SER GLY LYS SER GLN THR VAL ILE VAL GLY SEQRES 2 H 20 SER TRP GLY ALA LYS VAL SER
HET AMG A 200 13 HET AMG C 200 13 HET AMG E 200 13 HET AMG G 200 13
HETNAM AMG ALPHA-METHYL-D-GALACTOSIDE
FORMUL 9 AMG 4(C7 H14 O6) FORMUL 13 HOH *323(H2 O)
SHEET 1 A 4 LYS A 2 ASP A 5 0 SHEET 2 A 4 LEU A 112 ILE A 120 -1 N ILE A 120 O LYS A 2 SHEET 3 A 4 TYR A 126 SER A 132 -1 N SER A 132 O LEU A 112 SHEET 4 A 4 VAL B 10 GLY B 16 -1 N TRP B 15 O PHE A 127 SHEET 1 B 4 THR A 52 SER A 57 0 SHEET 2 B 4 GLY A 11 TYR A 19 -1 N TYR A 19 O THR A 52 SHEET 3 B 4 PHE A 28 LEU A 34 -1 N ASP A 33 O GLY A 11 SHEET 4 B 4 SER A 37 VAL A 40 -1 N TYR A 39 O TYR A 32 SHEET 1 C 3 THR A 102 PRO A 107 0 SHEET 2 C 3 GLU A 67 VAL A 75 -1 N THR A 72 O THR A 102 SHEET 3 C 3 TYR A 78 VAL A 81 -1 N VAL A 80 O GLY A 73 SHEET 1 D 4 LYS C 2 ASP C 5 0 SHEET 2 D 4 LEU C 112 ILE C 120 -1 N ILE C 120 O LYS C 2 SHEET 3 D 4 TYR C 126 SER C 132 -1 N SER C 132 O LEU C 112 SHEET 4 D 4 VAL D 10 GLY D 16 -1 N TRP D 15 O PHE C 127 SHEET 1 E 4 THR C 52 SER C 57 0 SHEET 2 E 4 GLY C 11 TYR C 19 -1 N TYR C 19 O THR C 52 SHEET 3 E 4 PHE C 28 LEU C 34 -1 N ASP C 33 O GLY C 11 SHEET 4 E 4 SER C 37 VAL C 40 -1 N TYR C 39 O TYR C 32 SHEET 1 F 3 THR C 102 PRO C 107 0 SHEET 2 F 3 GLU C 67 VAL C 75 -1 N THR C 72 O THR C 102 SHEET 3 F 3 TYR C 78 VAL C 81 -1 N VAL C 80 O GLY C 73 SHEET 1 G 4 LYS E 2 ASP E 5 0 SHEET 2 G 4 LEU E 112 ILE E 120 -1 N ILE E 120 O LYS E 2 SHEET 3 G 4 TYR E 126 SER E 132 -1 N SER E 132 O LEU E 112 SHEET 4 G 4 ILE F 11 GLY F 16 -1 N TRP F 15 O PHE E 127 SHEET 1 H 4 THR E 52 SER E 57 0 SHEET 2 H 4 GLY E 11 TYR E 19 -1 N TYR E 19 O THR E 52 SHEET 3 H 4 PHE E 28 LEU E 34 -1 N ASP E 33 O GLY E 11 SHEET 4 H 4 SER E 37 VAL E 40 -1 N TYR E 39 O TYR E 32 SHEET 1 I 3 THR E 102 PRO E 107 0 SHEET 2 I 3 GLU E 67 VAL E 75 -1 N THR E 72 O THR E 102 SHEET 3 I 3 TYR E 78 VAL E 81 -1 N VAL E 80 O GLY E 73 SHEET 1 J 4 LYS G 2 ASP G 5 0 SHEET 2 J 4 LEU G 112 ILE G 120 -1 N ILE G 120 O LYS G 2 SHEET 3 J 4 TYR G 126 SER G 132 -1 N SER G 132 O LEU G 112 SHEET 4 J 4 VAL H 10 GLY H 16 -1 N TRP H 15 O PHE G 127 SHEET 1 K 4 THR G 52 SER G 57 0 SHEET 2 K 4 GLY G 11 TYR G 19 -1 N TYR G 19 O THR G 52 SHEET 3 K 4 PHE G 28 LEU G 34 -1 N ASP G 33 O GLY G 11 SHEET 4 K 4 SER G 37 VAL G 40 -1 N TYR G 39 O TYR G 32 SHEET 1 L 3 THR G 102 PRO G 107 0 SHEET 2 L 3 GLU G 67 VAL G 75 -1 N THR G 72 O THR G 102 SHEET 3 L 3 TYR G 78 VAL G 81 -1 N VAL G 80 O GLY G 73 SHEET 1 M 2 ILE A 65 TYR A 71 0 SHEET 2 M 2 SER A 83 THR A 88 -1 N LYS A 87 O MET A 66 SHEET 1 N 2 ILE C 65 TYR C 71 0 SHEET 2 N 2 SER C 83 THR C 88 -1 N LYS C 87 O MET C 66 SHEET 1 O 2 ILE E 65 TYR E 71 0 SHEET 2 O 2 SER E 83 THR E 88 -1 N LYS E 87 O MET E 66 SHEET 1 P 2 ILE G 65 TYR G 71 0 SHEET 2 P 2 SER G 83 THR G 88 -1 N LYS G 87 O MET G 66
SITE 1 AC1 6 GLY A 1 TYR A 78 GLY A 121 TYR A 122 SITE 2 AC1 6 TRP A 123 ASP A 125 SITE 1 AC2 7 GLY C 1 TYR C 78 GLY C 121 TYR C 122 SITE 2 AC2 7 TRP C 123 ASP C 125 HOH C 235 SITE 1 AC3 5 GLY E 1 GLY E 121 TYR E 122 TRP E 123 SITE 2 AC3 5 ASP E 125 SITE 1 AC4 8 THR E 99 SER E 100 GLY G 1 TYR G 78 SITE 2 AC4 8 GLY G 121 TYR G 122 TRP G 123 ASP G 125
CRYST1 129.600 129.600 157.900 90.00 90.00 120.00 P 65 2 2 48
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 0.007716 0.004455 0.000000 0.00000
SCALE2 0.000000 0.008910 0.000000 0.00000
SCALE3 0.000000 0.000000 0.006333 0.00000
MTRIX1 1 -0.649900 -0.584800 0.485400 82.58430 1
MTRIX2 1 -0.603200 0.008400 -0.797600 168.72900 1
MTRIX3 1 0.462300 -0.811100 -0.358200 150.36279 1
MTRIX1 2 -0.999900 0.011700 -0.003600 94.23330 1
MTRIX2 2 -0.011700 -0.999900 -0.008100 130.78780 1
MTRIX3 2 -0.003700 -0.008100 1.000000 0.55450 1
MTRIX1 3 0.653300 0.587900 0.477100 -54.31790 1
MTRIX2 3 0.598800 -0.015500 -0.800800 113.46680 1
MTRIX3 3 -0.463400 0.808800 -0.362200 89.45440 1
MTRIX1 4 -0.652200 -0.612200 0.447000 88.06880 1
MTRIX2 4 -0.573800 0.013300 -0.818900 168.73120 1
MTRIX3 4 0.495400 -0.790600 -0.359900 146.97749 1
MTRIX1 5 -0.999800 -0.001700 0.020000 93.25020 1
MTRIX2 5 0.011700 -0.999900 0.002200 129.24699 1
MTRIX3 5 0.020000 0.002200 0.999800 -1.36120 1
MTRIX1 6 0.661300 0.588800 0.464800 -53.83250 1
MTRIX2 6 0.591300 -0.027900 -0.806000 114.63770 1
MTRIX3 6 -0.461600 0.807800 -0.366600 89.61840 1