PDB Short entry for 1HVV HEADER ENDOCYTOSIS/EXOCYTOSIS 08-JAN-01 1HVV TITLE SELF-ASSOCIATION OF THE H3 REGION OF SYNTAXIN 1A: IMPLICATIONS FOR TITLE 2 SNARE COMPLEX ASSEMBLY COMPND MOL_ID: 1; COMPND 2 MOLECULE: SYNTAXIN 1A; COMPND 3 CHAIN: A, B, C, D; COMPND 4 FRAGMENT: RESIDUES 190-264; COMPND 5 SYNONYM: NEURON-SPECIFIC ANTIGEN HPC-1, SYNAPTOTAGMIN ASSOCIATED 35 COMPND 6 KDA PROTEIN; COMPND 7 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS; SOURCE 3 ORGANISM_COMMON: NORWAY RAT; SOURCE 4 ORGANISM_TAXID: 10116; SOURCE 5 GENE: STX1A; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 EXPRESSION_SYSTEM_STRAIN: AB1899; SOURCE 9 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 10 EXPRESSION_SYSTEM_PLASMID: PGEX-KG KEYWDS FOUR-HELIX BUNDLE, HOMOTETRAMER, ALPHA-HELIX, ENDOCYTOSIS-EXOCYTOSIS KEYWDS 2 COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR K.M.S.MISURA,R.H.SCHELLER,W.I.WEIS REVDAT 5 07-FEB-24 1HVV 1 REMARK REVDAT 4 24-FEB-09 1HVV 1 VERSN REVDAT 3 01-APR-03 1HVV 1 JRNL REVDAT 2 02-MAY-01 1HVV 1 JRNL REVDAT 1 31-JAN-01 1HVV 0 JRNL AUTH K.M.MISURA,R.H.SCHELLER,W.I.WEIS JRNL TITL SELF-ASSOCIATION OF THE H3 REGION OF SYNTAXIN 1A. JRNL TITL 2 IMPLICATIONS FOR INTERMEDIATES IN SNARE COMPLEX ASSEMBLY. JRNL REF J.BIOL.CHEM. V. 276 13273 2001 JRNL REFN ISSN 0021-9258 JRNL PMID 11118447 JRNL DOI 10.1074/JBC.M009636200 REMARK 2 REMARK 2 RESOLUTION. 2.40 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 0.5 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 : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.40 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 30.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : 2243567.950 REMARK 3 DATA CUTOFF LOW (ABS(F)) : 0.0000 REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 96.3 REMARK 3 NUMBER OF REFLECTIONS : 20125 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) : 0.238 REMARK 3 FREE R VALUE : 0.273 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 7.800 REMARK 3 FREE R VALUE TEST SET COUNT : 1563 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : 0.007 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) : 2.40 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.47 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 91.30 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 2875 REMARK 3 BIN R VALUE (WORKING SET) : 0.2440 REMARK 3 BIN FREE R VALUE : 0.2860 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 7.80 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 244 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : 0.018 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2078 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 10 REMARK 3 SOLVENT ATOMS : 53 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 28.00 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 41.70 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 1.60000 REMARK 3 B22 (A**2) : 1.60000 REMARK 3 B33 (A**2) : -3.21000 REMARK 3 B12 (A**2) : 7.68000 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) : 0.31 REMARK 3 ESD FROM SIGMAA (A) : 0.17 REMARK 3 LOW RESOLUTION CUTOFF (A) : 6.00 REMARK 3 REMARK 3 CROSS-VALIDATED ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM C-V LUZZATI PLOT (A) : 0.37 REMARK 3 ESD FROM C-V SIGMAA (A) : 0.26 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.007 REMARK 3 BOND ANGLES (DEGREES) : 0.900 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 15.70 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.660 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) : 1.260 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE (A**2) : 2.120 ; 2.000 REMARK 3 SIDE-CHAIN BOND (A**2) : 2.340 ; 2.000 REMARK 3 SIDE-CHAIN ANGLE (A**2) : 3.450 ; 2.500 REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.35 REMARK 3 BSOL : 36.20 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 : PROTEIN_REP.PARAM REMARK 3 PARAMETER FILE 2 : WATER_REP.PARAM REMARK 3 PARAMETER FILE 3 : TAR.PARAM REMARK 3 PARAMETER FILE 4 : NULL REMARK 3 TOPOLOGY FILE 1 : PROTEIN.TOP REMARK 3 TOPOLOGY FILE 2 : WATER.TOP REMARK 3 TOPOLOGY FILE 3 : TAR.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 1HVV COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 09-JAN-01. REMARK 100 THE DEPOSITION ID IS D_1000012613. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 03-APR-95 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 5.0 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 RU200 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.54 REMARK 200 MONOCHROMATOR : GRAPHITE REMARK 200 OPTICS : MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : RIGAKU RAXIS II REMARK 200 INTENSITY-INTEGRATION SOFTWARE : DENZO REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 20870 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.400 REMARK 200 RESOLUTION RANGE LOW (A) : 45.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.2 REMARK 200 DATA REDUNDANCY : 3.800 REMARK 200 R MERGE (I) : 0.06900 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 19.8000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.40 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 45.00 REMARK 200 COMPLETENESS FOR SHELL (%) : 99.1 REMARK 200 DATA REDUNDANCY IN SHELL : 3.20 REMARK 200 R MERGE FOR SHELL (I) : 0.31300 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : NULL REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MAD REMARK 200 SOFTWARE USED: SOLVE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 65.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 3.67 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: SODIUM POTASSIUM TARTRATE, SODIUM REMARK 280 ACETATE, PH 5.0, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 31 2 1 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -Y,X-Y,Z+1/3 REMARK 290 3555 -X+Y,-X,Z+2/3 REMARK 290 4555 Y,X,-Z REMARK 290 5555 X-Y,-Y,-Z+2/3 REMARK 290 6555 -X,-X+Y,-Z+1/3 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 38.54000 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 77.08000 REMARK 290 SMTRY1 4 -0.500000 0.866025 0.000000 0.00000 REMARK 290 SMTRY2 4 0.866025 0.500000 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 0.00000 REMARK 290 SMTRY2 5 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 77.08000 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 38.54000 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 300 REMARK: THE BIOLOGICAL ASSEMBLY IS AN ANTI-PARALLEL HOMOTETRAMER REMARK 300 CONTAINED WITHIN ONE ASYMMETRIC UNIT. 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: TETRAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 10240 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 15280 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -108.0 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 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 TYR A 257 REMARK 465 GLN A 258 REMARK 465 SER A 259 REMARK 465 LYS A 260 REMARK 465 ALA A 261 REMARK 465 ARG A 262 REMARK 465 ARG A 263 REMARK 465 LYS A 264 REMARK 465 GLN B 190 REMARK 465 ALA B 191 REMARK 465 LEU B 192 REMARK 465 VAL B 255 REMARK 465 LYS B 256 REMARK 465 TYR B 257 REMARK 465 GLN B 258 REMARK 465 SER B 259 REMARK 465 LYS B 260 REMARK 465 ALA B 261 REMARK 465 ARG B 262 REMARK 465 ARG B 263 REMARK 465 LYS B 264 REMARK 465 LYS C 256 REMARK 465 TYR C 257 REMARK 465 GLN C 258 REMARK 465 SER C 259 REMARK 465 LYS C 260 REMARK 465 ALA C 261 REMARK 465 ARG C 262 REMARK 465 ARG C 263 REMARK 465 LYS C 264 REMARK 465 GLN D 190 REMARK 465 ALA D 191 REMARK 465 LEU D 192 REMARK 465 ALA D 254 REMARK 465 VAL D 255 REMARK 465 LYS D 256 REMARK 465 TYR D 257 REMARK 465 GLN D 258 REMARK 465 SER D 259 REMARK 465 LYS D 260 REMARK 465 ALA D 261 REMARK 465 ARG D 262 REMARK 465 ARG D 263 REMARK 465 LYS D 264 REMARK 470 REMARK 470 MISSING ATOM REMARK 470 THE FOLLOWING RESIDUES HAVE MISSING ATOMS (M=MODEL NUMBER; REMARK 470 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE NUMBER; REMARK 470 I=INSERTION CODE): REMARK 470 M RES CSSEQI ATOMS REMARK 470 LYS A 256 CG CD CE NZ REMARK 470 LYS D 253 CG CD CE NZ 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 THR D 251 41.04 -85.13 REMARK 500 LYS D 252 106.00 31.36 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE TAR C 1352 DBREF 1HVV A 190 264 UNP P32851 STX1A_RAT 190 264 DBREF 1HVV B 190 264 UNP P32851 STX1A_RAT 190 264 DBREF 1HVV C 190 264 UNP P32851 STX1A_RAT 190 264 DBREF 1HVV D 190 264 UNP P32851 STX1A_RAT 190 264 SEQRES 1 A 75 GLN ALA LEU SER GLU ILE GLU THR ARG HIS SER GLU ILE SEQRES 2 A 75 ILE LYS LEU GLU ASN SER ILE ARG GLU LEU HIS ASP MET SEQRES 3 A 75 PHE MET ASP MET ALA MET LEU VAL GLU SER GLN GLY GLU SEQRES 4 A 75 MET ILE ASP ARG ILE GLU TYR ASN VAL GLU HIS ALA VAL SEQRES 5 A 75 ASP TYR VAL GLU ARG ALA VAL SER ASP THR LYS LYS ALA SEQRES 6 A 75 VAL LYS TYR GLN SER LYS ALA ARG ARG LYS SEQRES 1 B 75 GLN ALA LEU SER GLU ILE GLU THR ARG HIS SER GLU ILE SEQRES 2 B 75 ILE LYS LEU GLU ASN SER ILE ARG GLU LEU HIS ASP MET SEQRES 3 B 75 PHE MET ASP MET ALA MET LEU VAL GLU SER GLN GLY GLU SEQRES 4 B 75 MET ILE ASP ARG ILE GLU TYR ASN VAL GLU HIS ALA VAL SEQRES 5 B 75 ASP TYR VAL GLU ARG ALA VAL SER ASP THR LYS LYS ALA SEQRES 6 B 75 VAL LYS TYR GLN SER LYS ALA ARG ARG LYS SEQRES 1 C 75 GLN ALA LEU SER GLU ILE GLU THR ARG HIS SER GLU ILE SEQRES 2 C 75 ILE LYS LEU GLU ASN SER ILE ARG GLU LEU HIS ASP MET SEQRES 3 C 75 PHE MET ASP MET ALA MET LEU VAL GLU SER GLN GLY GLU SEQRES 4 C 75 MET ILE ASP ARG ILE GLU TYR ASN VAL GLU HIS ALA VAL SEQRES 5 C 75 ASP TYR VAL GLU ARG ALA VAL SER ASP THR LYS LYS ALA SEQRES 6 C 75 VAL LYS TYR GLN SER LYS ALA ARG ARG LYS SEQRES 1 D 75 GLN ALA LEU SER GLU ILE GLU THR ARG HIS SER GLU ILE SEQRES 2 D 75 ILE LYS LEU GLU ASN SER ILE ARG GLU LEU HIS ASP MET SEQRES 3 D 75 PHE MET ASP MET ALA MET LEU VAL GLU SER GLN GLY GLU SEQRES 4 D 75 MET ILE ASP ARG ILE GLU TYR ASN VAL GLU HIS ALA VAL SEQRES 5 D 75 ASP TYR VAL GLU ARG ALA VAL SER ASP THR LYS LYS ALA SEQRES 6 D 75 VAL LYS TYR GLN SER LYS ALA ARG ARG LYS HET TAR C1352 10 HETNAM TAR D(-)-TARTARIC ACID FORMUL 5 TAR C4 H6 O6 FORMUL 6 HOH *53(H2 O) HELIX 1 1 SER A 193 ALA A 254 1 62 HELIX 2 2 SER B 193 LYS B 253 1 61 HELIX 3 3 SER C 193 GLU C 211 1 19 HELIX 4 4 GLU C 211 ALA C 254 1 44 HELIX 5 5 SER D 193 ASP D 250 1 58 SITE 1 AC1 9 GLY A 227 ILE A 230 ASP A 231 ILE C 209 SITE 2 AC1 9 ARG C 210 LEU C 212 HIS C 213 HOH C1357 SITE 3 AC1 9 HOH C1361 CRYST1 88.320 88.320 115.620 90.00 90.00 120.00 P 31 2 1 24 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 0.011322 0.006537 0.000000 0.00000 SCALE2 0.000000 0.013074 0.000000 0.00000 SCALE3 0.000000 0.000000 0.008649 0.00000