PDB Short entry for 2PTM HEADER TRANSPORT PROTEIN 08-MAY-07 2PTM TITLE STRUCTURE AND REARRANGEMENTS IN THE CARBOXY-TERMINAL REGION OF SPIH TITLE 2 CHANNELS COMPND MOL_ID: 1; COMPND 2 MOLECULE: HYPERPOLARIZATION-ACTIVATED (IH) CHANNEL; COMPND 3 CHAIN: A; COMPND 4 FRAGMENT: C-TERMINAL REGION (RESIDUES 470-665); COMPND 5 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STRONGYLOCENTROTUS PURPURATUS; SOURCE 3 ORGANISM_TAXID: 7668; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI BL21(DE3); SOURCE 5 EXPRESSION_SYSTEM_TAXID: 469008; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: BL-21 (DE3); SOURCE 7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PHMALC2T KEYWDS ION CHANNEL, CYCLIC NUCLEOTIDE BINDING DOMAIN, C-LINKER, CAMP, CGMP, KEYWDS 2 SPHCN1, HCN, TRANSPORT PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR G.E.FLYNN,K.D.BLACK,L.D.ISLAS,B.SANKARAN,W.N.ZAGOTTA REVDAT 5 30-AUG-23 2PTM 1 REMARK REVDAT 4 28-JUL-21 2PTM 1 REMARK SEQADV REVDAT 3 13-JUL-11 2PTM 1 VERSN REVDAT 2 24-FEB-09 2PTM 1 VERSN REVDAT 1 19-JUN-07 2PTM 0 JRNL AUTH G.E.FLYNN,K.D.BLACK,L.D.ISLAS,B.SANKARAN,W.N.ZAGOTTA JRNL TITL STRUCTURE AND REARRANGEMENTS IN THE CARBOXY-TERMINAL REGION JRNL TITL 2 OF SPIH CHANNELS. JRNL REF STRUCTURE V. 15 671 2007 JRNL REFN ISSN 0969-2126 JRNL PMID 17562314 JRNL DOI 10.1016/J.STR.2007.04.008 REMARK 2 REMARK 2 RESOLUTION. 1.93 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX REMARK 3 AUTHORS : PAUL ADAMS,PAVEL AFONINE,VINCENT CHEN,IAN REMARK 3 : DAVIS,KRESHNA GOPAL,RALF GROSSE-KUNSTLEVE, REMARK 3 : LI-WEI HUNG,ROBERT IMMORMINO,TOM IOERGER, REMARK 3 : AIRLIE MCCOY,ERIK MCKEE,NIGEL MORIARTY, REMARK 3 : REETAL PAI,RANDY READ,JANE RICHARDSON, REMARK 3 : DAVID RICHARDSON,TOD ROMO,JIM SACCHETTINI, REMARK 3 : NICHOLAS SAUTER,JACOB SMITH,LAURENT REMARK 3 : STORONI,TOM TERWILLIGER,PETER ZWART REMARK 3 REMARK 3 REFINEMENT TARGET : ML REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.93 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 29.21 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 99.7 REMARK 3 NUMBER OF REFLECTIONS : 21201 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : NULL REMARK 3 R VALUE (WORKING SET) : 0.187 REMARK 3 FREE R VALUE : 0.242 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.140 REMARK 3 FREE R VALUE TEST SET COUNT : 1089 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : NULL REMARK 3 SOLVENT RADIUS : NULL REMARK 3 SHRINKAGE RADIUS : NULL REMARK 3 K_SOL : 0.37 REMARK 3 B_SOL : 79.14 REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : NULL REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : NULL REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 30.44 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 41.33 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 1.47300 REMARK 3 B22 (A**2) : 1.47300 REMARK 3 B33 (A**2) : -2.94500 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 TWINNING INFORMATION. REMARK 3 FRACTION: NULL REMARK 3 OPERATOR: NULL REMARK 3 REMARK 3 DEVIATIONS FROM IDEAL VALUES. REMARK 3 RMSD COUNT REMARK 3 BOND : 0.004 NULL REMARK 3 ANGLE : NULL NULL REMARK 3 CHIRALITY : NULL NULL REMARK 3 PLANARITY : NULL NULL REMARK 3 DIHEDRAL : 9.474 NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 NCS DETAILS REMARK 3 NUMBER OF NCS GROUPS : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2PTM COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 09-MAY-07. REMARK 100 THE DEPOSITION ID IS D_1000042761. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 14-APR-04 REMARK 200 TEMPERATURE (KELVIN) : NULL REMARK 200 PH : 8.0 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : X4A REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.97935 REMARK 200 MONOCHROMATOR : SI (111) REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 4 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : SCALEPACK REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 21201 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.930 REMARK 200 RESOLUTION RANGE LOW (A) : 50.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.6 REMARK 200 DATA REDUNDANCY : 13.10 REMARK 200 R MERGE (I) : NULL REMARK 200 R SYM (I) : 0.07400 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 30.5000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.93 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.00 REMARK 200 COMPLETENESS FOR SHELL (%) : 100.0 REMARK 200 DATA REDUNDANCY IN SHELL : 10.40 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.30000 REMARK 200 <I/SIGMA(I)> FOR SHELL : 7.900 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: AMORE REMARK 200 STARTING MODEL: PDB ENTRY 1Q5O REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 56.82 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.85 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 10 % W/V PEG 6000, 0.5 M NACL, 20 % REMARK 280 GLYCEROL, 0.1 M HEPES, 10 MM HEXAMINE COBALT TRICHLORIDE, PH 8.0, REMARK 280 VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 277K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 4 21 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z REMARK 290 3555 -Y+1/2,X+1/2,Z REMARK 290 4555 Y+1/2,-X+1/2,Z REMARK 290 5555 -X+1/2,Y+1/2,-Z REMARK 290 6555 X+1/2,-Y+1/2,-Z REMARK 290 7555 Y,X,-Z REMARK 290 8555 -Y,-X,-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 0.00000 REMARK 290 SMTRY1 3 0.000000 -1.000000 0.000000 46.17700 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 46.17700 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 46.17700 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 46.17700 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 46.17700 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 46.17700 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 46.17700 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 46.17700 REMARK 290 SMTRY3 6 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 7 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY2 7 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 8 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY2 8 -1.000000 0.000000 0.000000 0.00000 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 300 REMARK: THE BIOLOGICAL ASSEMBLY IS A TETRAMER GENERATED FROM THE REMARK 300 MONOMER IN THE ASYMMETRIC UNIT BY THE OPERATIONS: SYMMETRY REMARK 300 OPERATION SYMM. ID. (PISA) X,Y,Z 1_555 -Y+1/2,X+1/2,Z 3_555 Y-1/2,- REMARK 300 X+1/2,Z 4_455 -X,-Y+1,Z 2_565 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,PQS REMARK 350 TOTAL BURIED SURFACE AREA: 12000 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 35900 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -47.0 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 0.00000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 92.35400 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 3 0.000000 -1.000000 0.000000 46.17700 REMARK 350 BIOMT2 3 1.000000 0.000000 0.000000 46.17700 REMARK 350 BIOMT3 3 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 4 0.000000 1.000000 0.000000 -46.17700 REMARK 350 BIOMT2 4 -1.000000 0.000000 0.000000 46.17700 REMARK 350 BIOMT3 4 0.000000 0.000000 1.000000 0.00000 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 0 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 1 LIES ON A SPECIAL POSITION. 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 GLY A 468 REMARK 465 ALA A 469 REMARK 465 MET A 470 REMARK 465 THR A 663 REMARK 465 ARG A 664 REMARK 465 ILE A 665 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 ASP A 471 CG OD1 OD2 REMARK 470 SER A 472 OG REMARK 470 ARG A 475 CG CD NE CZ NH1 NH2 REMARK 470 ARG A 478 CG CD NE CZ NH1 NH2 REMARK 470 LYS A 482 CG CD CE NZ REMARK 470 TYR A 490 CG CD1 CD2 CE1 CE2 CZ OH REMARK 470 ARG A 517 CG CD NE CZ NH1 NH2 REMARK 470 HIS A 518 CG ND1 CD2 CE1 NE2 REMARK 470 ASP A 538 CG OD1 OD2 REMARK 470 VAL A 547 CG1 CG2 REMARK 470 LYS A 652 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 PHE A 514 -158.28 -83.08 REMARK 500 ASP A 515 -55.17 -128.80 REMARK 500 GLU A 516 -44.82 73.74 REMARK 500 ALA A 569 -3.85 76.30 REMARK 500 GLU A 618 -127.13 -101.63 REMARK 500 ARG A 660 26.76 -76.34 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: NON-CIS, NON-TRANS REMARK 500 REMARK 500 THE FOLLOWING PEPTIDE BONDS DEVIATE SIGNIFICANTLY FROM BOTH REMARK 500 CIS AND TRANS CONFORMATION. CIS BONDS, IF ANY, ARE LISTED REMARK 500 ON CISPEP RECORDS. TRANS IS DEFINED AS 180 +/- 30 AND REMARK 500 CIS IS DEFINED AS 0 +/- 30 DEGREES. REMARK 500 MODEL OMEGA REMARK 500 ARG A 661 LEU A 662 -149.91 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 NCO A 301 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CMP A 401 DBREF 2PTM A 470 665 UNP O76977 O76977_STRPU 470 665 SEQADV 2PTM GLY A 468 UNP O76977 CLONING ARTIFACT SEQADV 2PTM ALA A 469 UNP O76977 CLONING ARTIFACT SEQRES 1 A 198 GLY ALA MET ASP SER SER SER ARG GLN TYR ARG GLU LYS SEQRES 2 A 198 LEU LYS GLN VAL GLU GLU TYR MET GLN TYR ARG LYS LEU SEQRES 3 A 198 PRO SER HIS LEU ARG ASN LYS ILE LEU ASP TYR TYR GLU SEQRES 4 A 198 TYR ARG TYR ARG GLY LYS MET PHE ASP GLU ARG HIS ILE SEQRES 5 A 198 PHE ARG GLU VAL SER GLU SER ILE ARG GLN ASP VAL ALA SEQRES 6 A 198 ASN TYR ASN CYS ARG ASP LEU VAL ALA SER VAL PRO PHE SEQRES 7 A 198 PHE VAL GLY ALA ASP SER ASN PHE VAL THR ARG VAL VAL SEQRES 8 A 198 THR LEU LEU GLU PHE GLU VAL PHE GLN PRO ALA ASP TYR SEQRES 9 A 198 VAL ILE GLN GLU GLY THR PHE GLY ASP ARG MET PHE PHE SEQRES 10 A 198 ILE GLN GLN GLY ILE VAL ASP ILE ILE MET SER ASP GLY SEQRES 11 A 198 VAL ILE ALA THR SER LEU SER ASP GLY SER TYR PHE GLY SEQRES 12 A 198 GLU ILE CYS LEU LEU THR ARG GLU ARG ARG VAL ALA SER SEQRES 13 A 198 VAL LYS CYS GLU THR TYR CYS THR LEU PHE SER LEU SER SEQRES 14 A 198 VAL GLN HIS PHE ASN GLN VAL LEU ASP GLU PHE PRO ALA SEQRES 15 A 198 MET ARG LYS THR MET GLU GLU ILE ALA VAL ARG ARG LEU SEQRES 16 A 198 THR ARG ILE HET NCO A 301 7 HET CMP A 401 22 HETNAM NCO COBALT HEXAMMINE(III) HETNAM CMP ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE HETSYN CMP CYCLIC AMP; CAMP FORMUL 2 NCO CO H18 N6 3+ FORMUL 3 CMP C10 H12 N5 O6 P FORMUL 4 HOH *204(H2 O) HELIX 1 1 ASP A 471 ARG A 491 1 21 HELIX 2 2 PRO A 494 ARG A 510 1 17 HELIX 3 3 GLU A 516 VAL A 523 1 8 HELIX 4 4 SER A 524 CYS A 536 1 13 HELIX 5 5 CYS A 536 VAL A 543 1 8 HELIX 6 6 PRO A 544 VAL A 547 5 4 HELIX 7 7 ASP A 550 LEU A 561 1 12 HELIX 8 8 GLU A 611 ARG A 617 1 7 HELIX 9 9 VAL A 637 PHE A 647 1 11 HELIX 10 10 PHE A 647 ARG A 660 1 14 SHEET 1 A 4 GLU A 562 PHE A 566 0 SHEET 2 A 4 CYS A 630 SER A 636 -1 O LEU A 632 N GLU A 564 SHEET 3 A 4 ARG A 581 GLN A 587 -1 N GLN A 587 O THR A 631 SHEET 4 A 4 TYR A 608 PHE A 609 -1 O PHE A 609 N PHE A 583 SHEET 1 B 4 TYR A 571 ILE A 573 0 SHEET 2 B 4 SER A 623 CYS A 626 -1 O VAL A 624 N ILE A 573 SHEET 3 B 4 VAL A 590 ILE A 593 -1 N ILE A 593 O SER A 623 SHEET 4 B 4 ILE A 599 LEU A 603 -1 O THR A 601 N ILE A 592 SITE 1 AC1 7 HOH A 49 HOH A 56 ASP A 503 GLU A 506 SITE 2 AC1 7 ASP A 591 SER A 602 GLU A 627 SITE 1 AC2 13 HOH A 42 HOH A 99 ILE A 592 THR A 601 SITE 2 AC2 13 PHE A 609 GLY A 610 GLU A 611 ILE A 612 SITE 3 AC2 13 CYS A 613 ARG A 620 VAL A 621 ALA A 622 SITE 4 AC2 13 ARG A 661 CRYST1 92.354 92.354 63.646 90.00 90.00 90.00 P 4 21 2 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 0.010828 0.000000 0.000000 0.00000 SCALE2 0.000000 0.010828 0.000000 0.00000 SCALE3 0.000000 0.000000 0.015712 0.00000