HEADER ION TRANSPORT/PROTEIN BINDING 17-JUN-14 4QNH TITLE CALCIUM-CALMODULIN (T79D) COMPLEXED WITH THE CALMODULIN BINDING DOMAIN TITLE 2 FROM A SMALL CONDUCTANCE POTASSIUM CHANNEL SK2-A COMPND MOL_ID: 1; COMPND 2 MOLECULE: SMALL CONDUCTANCE CALCIUM-ACTIVATED POTASSIUM CHANNEL COMPND 3 PROTEIN 2; COMPND 4 CHAIN: B; COMPND 5 FRAGMENT: CALMODULIN BINDING DOMAIN (UNP RESIDUES 396-487); COMPND 6 SYNONYM: SK2, SKCA 2, SKCA2, KCA2.2; COMPND 7 ENGINEERED: YES; COMPND 8 MOL_ID: 2; COMPND 9 MOLECULE: CALMODULIN; COMPND 10 CHAIN: R; COMPND 11 SYNONYM: CAM; COMPND 12 ENGINEERED: YES; COMPND 13 MUTATION: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS; SOURCE 3 ORGANISM_COMMON: RAT; SOURCE 4 ORGANISM_TAXID: 10116; SOURCE 5 GENE: KCNN2; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 8 MOL_ID: 2; SOURCE 9 ORGANISM_SCIENTIFIC: RATTUS NORVEGICUS; SOURCE 10 ORGANISM_COMMON: RAT; SOURCE 11 ORGANISM_TAXID: 10116; SOURCE 12 GENE: CALM1, CALM, CAM, CAM1, CALM2, CAM2, CAMB, CALM3, CAM3, CAMC; SOURCE 13 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 14 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS ION CHANNEL, ION TRANSPORT-PROTEIN BINDING COMPLEX EXPDTA X-RAY DIFFRACTION AUTHOR M.ZHANG,J.M.PASCAL,D.E.LOGOTHETIS,J.F.ZHANG REVDAT 3 28-FEB-24 4QNH 1 REMARK SEQADV LINK REVDAT 2 03-SEP-14 4QNH 1 JRNL REVDAT 1 06-AUG-14 4QNH 0 JRNL AUTH M.ZHANG,X.Y.MENG,M.CUI,J.M.PASCAL,D.E.LOGOTHETIS,J.F.ZHANG JRNL TITL SELECTIVE PHOSPHORYLATION MODULATES THE PIP2 SENSITIVITY OF JRNL TITL 2 THE CAM-SK CHANNEL COMPLEX. JRNL REF NAT.CHEM.BIOL. V. 10 753 2014 JRNL REFN ISSN 1552-4450 JRNL PMID 25108821 JRNL DOI 10.1038/NCHEMBIO.1592 REMARK 2 REMARK 2 RESOLUTION. 2.02 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX (PHENIX.REFINE: 1.8.1_1168) 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) : 2.02 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 26.65 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.340 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.6 REMARK 3 NUMBER OF REFLECTIONS : 21055 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.184 REMARK 3 R VALUE (WORKING SET) : 0.182 REMARK 3 FREE R VALUE : 0.234 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 4.820 REMARK 3 FREE R VALUE TEST SET COUNT : 1014 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT (IN BINS). REMARK 3 BIN RESOLUTION RANGE COMPL. NWORK NFREE RWORK RFREE REMARK 3 1 26.6500 - 3.8608 0.99 2917 157 0.1747 0.2058 REMARK 3 2 3.8608 - 3.0659 0.99 2888 157 0.1700 0.2319 REMARK 3 3 3.0659 - 2.6787 1.00 2896 119 0.1799 0.2626 REMARK 3 4 2.6787 - 2.4340 0.99 2883 146 0.1897 0.2304 REMARK 3 5 2.4340 - 2.2596 0.99 2849 157 0.1940 0.2789 REMARK 3 6 2.2596 - 2.1265 1.00 2839 167 0.1995 0.2741 REMARK 3 7 2.1265 - 2.0200 0.95 2769 111 0.2245 0.2740 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : FLAT BULK SOLVENT MODEL REMARK 3 SOLVENT RADIUS : 1.11 REMARK 3 SHRINKAGE RADIUS : 0.90 REMARK 3 K_SOL : NULL REMARK 3 B_SOL : NULL REMARK 3 REMARK 3 ERROR ESTIMATES. REMARK 3 COORDINATE ERROR (MAXIMUM-LIKELIHOOD BASED) : 0.250 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 25.580 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 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 : 0.014 1915 REMARK 3 ANGLE : 1.287 2572 REMARK 3 CHIRALITY : 0.074 289 REMARK 3 PLANARITY : 0.007 339 REMARK 3 DIHEDRAL : 14.677 753 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 4QNH COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 18-JUL-14. REMARK 100 THE DEPOSITION ID IS D_1000086276. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 28-FEB-13 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 5.6 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : NSLS REMARK 200 BEAMLINE : X6A REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.0781 REMARK 200 MONOCHROMATOR : SI(111) CHANNEL CUT REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 270 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : SCALA REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 21057 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.020 REMARK 200 RESOLUTION RANGE LOW (A) : 26.650 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.700 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 98.6 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) : 2.02 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.07 REMARK 200 COMPLETENESS FOR SHELL (%) : 90.8 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: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: MOLECULAR REPLACEMENT REMARK 200 SOFTWARE USED: PHENIX REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 56.41 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.82 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 1.5 M LI2SO4, 0.5 M (NH4)2SO4, 0.1 M REMARK 280 SODIUM CITRATE, PH 5.6, VAPOR DIFFUSION, TEMPERATURE 277.15K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 1 2 1 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 X+1/2,Y+1/2,Z REMARK 290 4555 -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 0.00000 REMARK 290 SMTRY1 3 1.000000 0.000000 0.000000 38.58000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 32.98000 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 -1.000000 0.000000 0.000000 38.58000 REMARK 290 SMTRY2 4 0.000000 1.000000 0.000000 32.98000 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1, 2 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: TETRAMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: TETRAMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 13490 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 22080 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -158.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, R 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 73.14378 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 64.55519 REMARK 350 REMARK 350 BIOMOLECULE: 2 REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 2850 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 14930 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -51.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: B, R 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 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 B 619 LIES ON A SPECIAL POSITION. REMARK 375 HOH B 643 LIES ON A SPECIAL POSITION. REMARK 375 HOH B 653 LIES ON A SPECIAL POSITION. REMARK 375 HOH R1171 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 MET B 394 REMARK 465 LYS B 405 REMARK 465 HIS B 406 REMARK 465 VAL B 407 REMARK 465 HIS B 408 REMARK 465 ASN B 409 REMARK 465 PHE B 410 REMARK 465 MET B 411 REMARK 465 MET B 412 REMARK 465 HIS B 490 REMARK 465 HIS B 491 REMARK 465 HIS B 492 REMARK 465 HIS B 493 REMARK 465 HIS B 494 REMARK 465 HIS B 495 REMARK 465 MET R 0 REMARK 465 ALA R 1 REMARK 465 LYS R 148 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 GLU B 404 CG CD OE1 OE2 REMARK 470 ASP R 2 CG OD1 OD2 REMARK 470 GLN R 3 CG CD OE1 NE2 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 HE ARG B 450 O HOH B 628 1.47 REMARK 500 O4 SO4 B 501 O HOH B 640 1.97 REMARK 500 N ALA R 73 O HOH R 1202 1.99 REMARK 500 OE1 GLU R 127 O HOH R 1132 2.01 REMARK 500 O HOH R 1179 O HOH R 1188 2.03 REMARK 500 O HOH B 630 O HOH B 645 2.04 REMARK 500 O HOH R 1188 O HOH R 1195 2.08 REMARK 500 OD1 ASP B 413 O HOH B 661 2.08 REMARK 500 OD1 ASP R 80 O HOH R 1203 2.08 REMARK 500 O HOH R 1114 O HOH R 1215 2.10 REMARK 500 O LEU R 69 O HOH R 1202 2.11 REMARK 500 OE1 GLU R 87 O HOH R 1215 2.12 REMARK 500 O HOH B 639 O HOH B 640 2.16 REMARK 500 O HOH B 649 O HOH B 650 2.17 REMARK 500 O HOH R 1153 O HOH R 1211 2.18 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 LYS B 397 -109.37 50.63 REMARK 500 LYS R 75 33.57 -140.33 REMARK 500 LYS R 115 155.95 76.25 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 R1001 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP R 20 OD1 REMARK 620 2 ASP R 22 OD1 75.7 REMARK 620 3 ASP R 24 OD1 85.2 81.6 REMARK 620 4 THR R 26 O 87.5 157.6 82.3 REMARK 620 5 GLU R 31 OE1 110.2 119.8 155.6 79.7 REMARK 620 6 GLU R 31 OE2 93.5 68.5 149.4 128.2 51.5 REMARK 620 7 HOH R1103 O 160.6 92.3 77.9 99.4 88.9 96.2 REMARK 620 N 1 2 3 4 5 6 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CA R1002 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 ASP R 56 OD1 REMARK 620 2 ASP R 58 OD1 68.1 REMARK 620 3 ASN R 60 OD1 90.1 78.8 REMARK 620 4 THR R 62 O 93.8 153.8 82.5 REMARK 620 5 GLU R 67 OE2 81.2 68.9 147.6 128.9 REMARK 620 6 GLU R 67 OE1 103.4 122.9 157.4 78.6 54.1 REMARK 620 7 HOH R1219 O 167.0 118.6 80.9 75.9 111.3 82.5 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 SO4 B 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA R 1001 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA R 1002 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 4J9Y RELATED DB: PDB REMARK 900 WILD TYPE AND MUTANT DBREF 4QNH B 396 487 UNP P70604 KCNN2_RAT 396 487 DBREF 4QNH R 0 148 UNP P62161 CALM_RAT 1 149 SEQADV 4QNH MET B 394 UNP P70604 INITIATING METHIONINE SEQADV 4QNH GLY B 395 UNP P70604 EXPRESSION TAG SEQADV 4QNH LEU B 488 UNP P70604 EXPRESSION TAG SEQADV 4QNH GLU B 489 UNP P70604 EXPRESSION TAG SEQADV 4QNH HIS B 490 UNP P70604 EXPRESSION TAG SEQADV 4QNH HIS B 491 UNP P70604 EXPRESSION TAG SEQADV 4QNH HIS B 492 UNP P70604 EXPRESSION TAG SEQADV 4QNH HIS B 493 UNP P70604 EXPRESSION TAG SEQADV 4QNH HIS B 494 UNP P70604 EXPRESSION TAG SEQADV 4QNH HIS B 495 UNP P70604 EXPRESSION TAG SEQADV 4QNH ASP R 79 UNP P62161 THR 80 ENGINEERED MUTATION SEQRES 1 B 102 MET GLY ARG LYS LEU GLU LEU THR LYS ALA GLU LYS HIS SEQRES 2 B 102 VAL HIS ASN PHE MET MET ASP THR GLN LEU THR LYS ARG SEQRES 3 B 102 VAL LYS ASN ALA ALA ALA ASN VAL LEU ARG GLU THR TRP SEQRES 4 B 102 LEU ILE TYR LYS ASN THR LYS LEU VAL LYS LYS ILE ASP SEQRES 5 B 102 HIS ALA LYS VAL ARG LYS HIS GLN ARG LYS PHE LEU GLN SEQRES 6 B 102 ALA ILE HIS GLN LEU ARG SER VAL LYS MET GLU GLN ARG SEQRES 7 B 102 LYS LEU ASN ASP GLN ALA ASN THR LEU VAL ASP LEU ALA SEQRES 8 B 102 LYS THR GLN LEU GLU HIS HIS HIS HIS HIS HIS SEQRES 1 R 149 MET ALA ASP GLN LEU THR GLU GLU GLN ILE ALA GLU PHE SEQRES 2 R 149 LYS GLU ALA PHE SER LEU PHE ASP LYS ASP GLY ASP GLY SEQRES 3 R 149 THR ILE THR THR LYS GLU LEU GLY THR VAL MET ARG SER SEQRES 4 R 149 LEU GLY GLN ASN PRO THR GLU ALA GLU LEU GLN ASP MET SEQRES 5 R 149 ILE ASN GLU VAL ASP ALA ASP GLY ASN GLY THR ILE ASP SEQRES 6 R 149 PHE PRO GLU PHE LEU THR MET MET ALA ARG LYS MET LYS SEQRES 7 R 149 ASP ASP ASP SER GLU GLU GLU ILE ARG GLU ALA PHE ARG SEQRES 8 R 149 VAL PHE ASP LYS ASP GLY ASN GLY TYR ILE SER ALA ALA SEQRES 9 R 149 GLU LEU ARG HIS VAL MET THR ASN LEU GLY GLU LYS LEU SEQRES 10 R 149 THR ASP GLU GLU VAL ASP GLU MET ILE ARG GLU ALA ASP SEQRES 11 R 149 ILE ASP GLY ASP GLY GLN VAL ASN TYR GLU GLU PHE VAL SEQRES 12 R 149 GLN MET MET THR ALA LYS HET SO4 B 501 5 HET CA R1001 1 HET CA R1002 1 HETNAM SO4 SULFATE ION HETNAM CA CALCIUM ION FORMUL 3 SO4 O4 S 2- FORMUL 4 CA 2(CA 2+) FORMUL 6 HOH *187(H2 O) HELIX 1 1 THR B 414 LEU B 440 1 27 HELIX 2 2 ASP B 445 THR B 486 1 42 HELIX 3 3 GLN B 487 GLU B 489 5 3 HELIX 4 4 THR R 5 ASP R 20 1 16 HELIX 5 5 THR R 28 LEU R 39 1 12 HELIX 6 6 THR R 44 VAL R 55 1 12 HELIX 7 7 ASP R 64 ARG R 74 1 11 HELIX 8 8 SER R 81 VAL R 91 1 11 HELIX 9 9 ALA R 102 LEU R 112 1 11 HELIX 10 10 THR R 117 ASP R 129 1 13 HELIX 11 11 TYR R 138 ALA R 147 1 10 SHEET 1 A 2 LEU B 400 THR B 401 0 SHEET 2 A 2 ASP R 78 ASP R 79 -1 O ASP R 79 N LEU B 400 SHEET 1 B 2 TYR R 99 SER R 101 0 SHEET 2 B 2 GLN R 135 ASN R 137 -1 O VAL R 136 N ILE R 100 LINK OD1 ASP R 20 CA CA R1001 1555 1555 2.30 LINK OD1 ASP R 22 CA CA R1001 1555 1555 2.31 LINK OD1 ASP R 24 CA CA R1001 1555 1555 2.31 LINK O THR R 26 CA CA R1001 1555 1555 2.07 LINK OE1 GLU R 31 CA CA R1001 1555 1555 2.53 LINK OE2 GLU R 31 CA CA R1001 1555 1555 2.63 LINK OD1 ASP R 56 CA CA R1002 1555 1555 2.02 LINK OD1 ASP R 58 CA CA R1002 1555 1555 2.38 LINK OD1 ASN R 60 CA CA R1002 1555 1555 2.44 LINK O THR R 62 CA CA R1002 1555 1555 2.48 LINK OE2 GLU R 67 CA CA R1002 1555 1555 2.39 LINK OE1 GLU R 67 CA CA R1002 1555 1555 2.45 LINK CA CA R1001 O HOH R1103 1555 1555 2.35 LINK CA CA R1002 O HOH R1219 1555 1555 1.91 SITE 1 AC1 5 LYS B 451 HIS B 452 HOH B 639 HOH B 640 SITE 2 AC1 5 HOH B 663 SITE 1 AC2 6 ASP R 20 ASP R 22 ASP R 24 THR R 26 SITE 2 AC2 6 GLU R 31 HOH R1103 SITE 1 AC3 6 ASP R 56 ASP R 58 ASN R 60 THR R 62 SITE 2 AC3 6 GLU R 67 HOH R1219 CRYST1 77.160 65.960 64.680 90.00 93.56 90.00 C 1 2 1 4 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 0.012960 0.000000 0.000806 0.00000 SCALE2 0.000000 0.015161 0.000000 0.00000 SCALE3 0.000000 0.000000 0.015491 0.00000