HEADER SUGAR BINDING PROTEIN 19-OCT-10 3PAR TITLE SURFACTANT PROTEIN-A NECK AND CARBOHYDRATE RECOGNITION DOMAIN (NCRD) TITLE 2 IN THE ABSENCE OF LIGAND COMPND MOL_ID: 1; COMPND 2 MOLECULE: PULMONARY SURFACTANT-ASSOCIATED PROTEIN A; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: UNP RESIDUES 101-248; COMPND 5 SYNONYM: PSAP, PSP-A, SP-A; COMPND 6 ENGINEERED: YES; COMPND 7 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS; SOURCE 3 ORGANISM_COMMON: BROWN RAT,RAT,RATS; SOURCE 4 ORGANISM_TAXID: 10116; SOURCE 5 GENE: SFTP-1, SFTP1, SFTPA, SFTPA1; SOURCE 6 EXPRESSION_SYSTEM: TRICHOPLUSIA; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 7110; SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PVL 1392 KEYWDS COLLECTIN, CARBOHYDRATE BINDING, LECTIN, MANNOSE, SUGAR BINDING KEYWDS 2 PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR F.SHANG,M.J.RYNKIEWICZ,F.X.MCCORMACK,H.WU,T.M.CAFARELLA,J.HEAD, AUTHOR 2 B.A.SEATON REVDAT 4 06-SEP-23 3PAR 1 REMARK SEQADV LINK REVDAT 3 16-MAR-11 3PAR 1 JRNL REVDAT 2 05-JAN-11 3PAR 1 JRNL REVDAT 1 03-NOV-10 3PAR 0 JRNL AUTH F.SHANG,M.J.RYNKIEWICZ,F.X.MCCORMACK,H.WU,T.M.CAFARELLA, JRNL AUTH 2 J.F.HEAD,B.A.SEATON JRNL TITL CRYSTALLOGRAPHIC COMPLEXES OF SURFACTANT PROTEIN A AND JRNL TITL 2 CARBOHYDRATES REVEAL LIGAND-INDUCED CONFORMATIONAL CHANGE. JRNL REF J.BIOL.CHEM. V. 286 757 2011 JRNL REFN ISSN 0021-9258 JRNL PMID 21047777 JRNL DOI 10.1074/JBC.M110.175265 REMARK 2 REMARK 2 RESOLUTION. 2.30 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS REMARK 3 AUTHORS : BRUNGER,ADAMS,CLORE,DELANO,GROS,GROSSE- REMARK 3 : KUNSTLEVE,JIANG,KUSZEWSKI,NILGES,PANNU, REMARK 3 : READ,RICE,SIMONSON,WARREN REMARK 3 REMARK 3 REFINEMENT TARGET : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.30 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 32.19 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 887133.480 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 96.4 REMARK 3 NUMBER OF REFLECTIONS : 10788 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING SET) : 0.227 REMARK 3 FREE R VALUE : 0.238 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 8.000 REMARK 3 FREE R VALUE TEST SET COUNT : 867 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.008 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 6 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.30 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.44 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 89.00 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1532 REMARK 3 BIN R VALUE (WORKING SET) : 0.3450 REMARK 3 BIN FREE R VALUE : 0.4130 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 6.30 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 103 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.041 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1135 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 11 REMARK 3 SOLVENT ATOMS : 40 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 44.00 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 45.30 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 5.85000 REMARK 3 B22 (A**2) : 5.85000 REMARK 3 B33 (A**2) : -11.70000 REMARK 3 B12 (A**2) : 9.05000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.32 REMARK 3 ESD FROM SIGMAA (A) : 0.36 REMARK 3 LOW RESOLUTION CUTOFF (A) : 5.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.36 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.41 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.009 REMARK 3 BOND ANGLES (DEGREES) : 1.200 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 22.00 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.690 REMARK 3 REMARK 3 ISOTROPIC THERMAL MODEL : RESTRAINED 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 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.35 REMARK 3 BSOL : 37.48 REMARK 3 REMARK 3 NCS MODEL : NONE 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : CARBOHYDRATE.PARAM REMARK 3 PARAMETER FILE 3 : WATER.PARAM REMARK 3 PARAMETER FILE 4 : ION.PARAM REMARK 3 PARAMETER FILE 5 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : CARBOHYDRATE.TOP REMARK 3 TOPOLOGY FILE 3 : WATER.TOP REMARK 3 TOPOLOGY FILE 4 : ION.TOP REMARK 3 TOPOLOGY FILE 5 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 3PAR COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 22-OCT-10. REMARK 100 THE DEPOSITION ID IS D_1000062166. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 07-JUL-06 REMARK 200 TEMPERATURE (KELVIN) : 90 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : RIGAKU RU300 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 : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS IV REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 10984 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.300 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.2 REMARK 200 DATA REDUNDANCY : 4.000 REMARK 200 R MERGE (I) : 0.03900 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 21.9000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.30 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.35 REMARK 200 COMPLETENESS FOR SHELL (%) : 91.3 REMARK 200 DATA REDUNDANCY IN SHELL : 2.90 REMARK 200 R MERGE FOR SHELL (I) : 0.26600 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 4.300 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: CNS REMARK 200 STARTING MODEL: PDB CODE 1R13 REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 67.17 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.75 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1 UL OF SP-A (10 MG/ML) WAS MIXED WITH REMARK 280 1 UL RESERVOIR (50 MM SODIUM CACODYLATE (PH = 6.5), 1.2-1.6 M REMARK 280 LITHIUM SULFATE, AND 10 MM CALCIUM CHLORIDE). AFTER CRYSTALS HAD REMARK 280 GROWN, THE DROP WAS DILUTED 1/2 WITH 50 MM SODIUM CACODYLATE (PH REMARK 280 = 6.5) AND 10 MM CALCIUM CHLORIDE. MALTOSE POWDER WAS THEN ADDED REMARK 280 TO THE DROP AND DISSOLVED. PRIOR TO DATA COLLECTION, THE DROP REMARK 280 WAS DILUTED 1/2 AGAIN AND MORE MALTOSE POWDER WAS DISSOLVED., REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 290K, PH 6.5 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 63 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z REMARK 290 3555 -X+Y,-X,Z REMARK 290 4555 -X,-Y,Z+1/2 REMARK 290 5555 Y,-X+Y,Z+1/2 REMARK 290 6555 X-Y,X,Z+1/2 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 0.00000 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 0.00000 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 22.37200 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 22.37200 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 22.37200 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: TRIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TRIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 5650 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 21390 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -141.0 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 -0.500000 -0.866025 0.000000 98.35100 REMARK 350 BIOMT2 2 0.866025 -0.500000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 3 -0.500000 0.866025 0.000000 49.17550 REMARK 350 BIOMT2 3 -0.866025 -0.500000 0.000000 85.17446 REMARK 350 BIOMT3 3 0.000000 0.000000 1.000000 0.00000 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 ALA A 81 REMARK 465 TYR A 82 REMARK 465 LEU A 83 REMARK 465 ASP A 84 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 PHE A 128 -79.80 -46.01 REMARK 500 ASP A 172 -159.53 -71.21 REMARK 500 PRO A 175 147.29 -33.28 REMARK 500 ALA A 184 156.51 -45.11 REMARK 500 SER A 187 -73.49 -99.42 REMARK 500 ASN A 190 50.09 -147.13 REMARK 500 ARG A 197 135.29 -173.07 REMARK 500 ARG A 216 -163.65 -165.81 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 300 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLU A 195 OE1 REMARK 620 2 ARG A 197 O 85.4 REMARK 620 3 ASN A 214 OD1 74.7 153.9 REMARK 620 4 ASP A 215 OD1 73.4 81.3 108.1 REMARK 620 5 ASP A 215 O 132.8 118.1 87.9 71.1 REMARK 620 6 HOH A 308 O 79.8 78.0 81.9 147.1 141.6 REMARK 620 7 HOH A 325 O 160.6 87.8 105.4 123.5 66.1 81.0 REMARK 620 N 1 2 3 4 5 6 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 300 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE SO4 A 302 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1R13 RELATED DB: PDB REMARK 900 SURFACTANT PROTEIN-A NCRD REMARK 900 RELATED ID: 1R14 RELATED DB: PDB REMARK 900 SURFACTANT PROTEIN-A NCRD COMPLEXED WITH SAMARIUM REMARK 900 RELATED ID: 3PAK RELATED DB: PDB REMARK 900 SURFACTANT PROTEIN-A NCRD COMPLEXED WITH MANNOSE REMARK 900 RELATED ID: 3PAQ RELATED DB: PDB REMARK 900 SURFACTANT PROTEIN-A NCRD COMPLEXED WITH ALPHA-METHYLMANNOSE REMARK 900 RELATED ID: 3PBF RELATED DB: PDB REMARK 900 SURFACTANT PROTEIN-A NCRD COMPLEXED WITH GLYCEROL DBREF 3PAR A 81 228 UNP P08427 SFTPA_RAT 101 248 SEQADV 3PAR SER A 187 UNP P08427 ASN 207 ENGINEERED MUTATION SEQRES 1 A 148 ALA TYR LEU ASP GLU GLU LEU GLN THR GLU LEU TYR GLU SEQRES 2 A 148 ILE LYS HIS GLN ILE LEU GLN THR MET GLY VAL LEU SER SEQRES 3 A 148 LEU GLN GLY SER MET LEU SER VAL GLY ASP LYS VAL PHE SEQRES 4 A 148 SER THR ASN GLY GLN SER VAL ASN PHE ASP THR ILE LYS SEQRES 5 A 148 GLU MET CYS THR ARG ALA GLY GLY ASN ILE ALA VAL PRO SEQRES 6 A 148 ARG THR PRO GLU GLU ASN GLU ALA ILE ALA SER ILE ALA SEQRES 7 A 148 LYS LYS TYR ASN ASN TYR VAL TYR LEU GLY MET ILE GLU SEQRES 8 A 148 ASP GLN THR PRO GLY ASP PHE HIS TYR LEU ASP GLY ALA SEQRES 9 A 148 SER VAL SER TYR THR ASN TRP TYR PRO GLY GLU PRO ARG SEQRES 10 A 148 GLY GLN GLY LYS GLU LYS CYS VAL GLU MET TYR THR ASP SEQRES 11 A 148 GLY THR TRP ASN ASP ARG GLY CYS LEU GLN TYR ARG LEU SEQRES 12 A 148 ALA VAL CYS GLU PHE HET CA A 300 1 HET SO4 A 301 5 HET SO4 A 302 5 HETNAM CA CALCIUM ION HETNAM SO4 SULFATE ION FORMUL 2 CA CA 2+ FORMUL 3 SO4 2(O4 S 2-) FORMUL 5 HOH *40(H2 O) HELIX 1 1 GLU A 85 GLN A 108 1 24 HELIX 2 2 ASN A 127 ALA A 138 1 12 HELIX 3 3 THR A 147 TYR A 161 1 15 SHEET 1 A 4 LEU A 112 VAL A 114 0 SHEET 2 A 4 LYS A 117 VAL A 126 -1 O PHE A 119 N LEU A 112 SHEET 3 A 4 ARG A 222 PHE A 228 -1 O CYS A 226 N SER A 120 SHEET 4 A 4 ASN A 141 ILE A 142 -1 N ASN A 141 O GLU A 227 SHEET 1 B 4 PHE A 178 HIS A 179 0 SHEET 2 B 4 VAL A 165 GLU A 171 -1 N ILE A 170 O HIS A 179 SHEET 3 B 4 CYS A 204 MET A 207 -1 O VAL A 205 N LEU A 167 SHEET 4 B 4 TRP A 213 ARG A 216 -1 O ARG A 216 N CYS A 204 SSBOND 1 CYS A 135 CYS A 226 1555 1555 2.03 SSBOND 2 CYS A 204 CYS A 218 1555 1555 2.03 LINK OE1 GLU A 195 CA CA A 300 1555 1555 2.44 LINK O ARG A 197 CA CA A 300 1555 1555 2.55 LINK OD1 ASN A 214 CA CA A 300 1555 1555 2.49 LINK OD1 ASP A 215 CA CA A 300 1555 1555 2.32 LINK O ASP A 215 CA CA A 300 1555 1555 2.40 LINK CA CA A 300 O HOH A 308 1555 1555 2.30 LINK CA CA A 300 O HOH A 325 1555 1555 2.57 CISPEP 1 GLU A 195 PRO A 196 0 -0.05 SITE 1 AC1 6 GLU A 195 ARG A 197 ASN A 214 ASP A 215 SITE 2 AC1 6 HOH A 308 HOH A 325 SITE 1 AC2 3 ARG A 216 GLY A 217 HOH A 334 SITE 1 AC3 4 ARG A 216 GLN A 220 ARG A 222 HOH A 320 CRYST1 98.351 98.351 44.744 90.00 90.00 120.00 P 63 6 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 0.010168 0.005870 0.000000 0.00000 SCALE2 0.000000 0.011741 0.000000 0.00000 SCALE3 0.000000 0.000000 0.022349 0.00000