HEADER MEMBRANE PROTEIN 17-APR-18 6D42 TITLE CRYSTAL STRUCTURE OF THE KCA3.1 C-TERMINAL FOUR-HELIX BUNDLE (WITH TITLE 2 COPPER) COMPND MOL_ID: 1; COMPND 2 MOLECULE: INTERMEDIATE CONDUCTANCE CALCIUM-ACTIVATED POTASSIUM COMPND 3 CHANNEL PROTEIN 4; COMPND 4 CHAIN: A, B; COMPND 5 SYNONYM: SKCA4,IKCA1,IK1,KCA3.1,KCA4,PUTATIVE GARDOS CHANNEL; COMPND 6 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: HOMO SAPIENS; SOURCE 3 ORGANISM_COMMON: HUMAN; SOURCE 4 ORGANISM_TAXID: 9606; SOURCE 5 GENE: KCNN4, IK1, IKCA1, KCA4, SK4; SOURCE 6 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 7 EXPRESSION_SYSTEM_TAXID: 562 KEYWDS FOUR-HELIX BUNDLE, COPPER, MEMBRANE PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR S.R.HUBBARD,T.JI REVDAT 2 18-DEC-19 6D42 1 REMARK REVDAT 1 11-JUL-18 6D42 0 JRNL AUTH T.JI,S.CORBALAN-GARCIA,S.R.HUBBARD JRNL TITL CRYSTAL STRUCTURE OF THE C-TERMINAL FOUR-HELIX BUNDLE OF THE JRNL TITL 2 POTASSIUM CHANNEL KCA3.1. JRNL REF PLOS ONE V. 13 99942 2018 JRNL REFN ESSN 1932-6203 JRNL PMID 29953543 JRNL DOI 10.1371/JOURNAL.PONE.0199942 REMARK 2 REMARK 2 RESOLUTION. 1.75 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : PHENIX 1.11.1_2575 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 : NULL REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.75 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 27.06 REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.338 REMARK 3 COMPLETENESS FOR RANGE (%) : 98.9 REMARK 3 NUMBER OF REFLECTIONS : 16015 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 R VALUE (WORKING + TEST SET) : 0.259 REMARK 3 R VALUE (WORKING SET) : 0.252 REMARK 3 FREE R VALUE : 0.323 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 10.128 REMARK 3 FREE R VALUE TEST SET COUNT : 901 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 27.0621 - 4.0028 0.94 1149 135 0.2488 0.2949 REMARK 3 2 4.0028 - 3.1788 0.99 1217 138 0.2186 0.2942 REMARK 3 3 3.1788 - 2.7774 0.99 1198 135 0.2557 0.3333 REMARK 3 4 2.7774 - 2.5237 0.99 1184 137 0.2451 0.3086 REMARK 3 5 2.5237 - 2.3429 1.00 1217 136 0.2445 0.3230 REMARK 3 6 2.3429 - 2.2048 1.00 1204 135 0.2502 0.3154 REMARK 3 7 2.2048 - 2.0945 1.00 1214 138 0.2420 0.3543 REMARK 3 8 2.0945 - 2.0033 1.00 1210 137 0.2841 0.3569 REMARK 3 9 2.0033 - 1.9262 1.00 1223 136 0.3065 0.3621 REMARK 3 10 1.9262 - 1.8598 0.99 1187 131 0.3081 0.4544 REMARK 3 11 1.8598 - 1.8016 0.99 1205 136 0.3387 0.3722 REMARK 3 12 1.8016 - 1.7501 0.97 1185 128 0.3774 0.4728 REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : NULL 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) : 0.248 REMARK 3 PHASE ERROR (DEGREES, MAXIMUM-LIKELIHOOD BASED) : 38.720 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 27.58 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 48.01 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 : 0.008 600 REMARK 3 ANGLE : 0.984 810 REMARK 3 CHIRALITY : 0.041 106 REMARK 3 PLANARITY : 0.004 100 REMARK 3 DIHEDRAL : 2.591 374 REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : 2 REMARK 3 TLS GROUP : 1 REMARK 3 SELECTION: (CHAIN 'A' AND RESID 376 THROUGH 414) REMARK 3 ORIGIN FOR THE GROUP (A): 21.0244 7.0021 15.2881 REMARK 3 T TENSOR REMARK 3 T11: 0.2556 T22: 0.2063 REMARK 3 T33: 0.3597 T12: -0.0461 REMARK 3 T13: -0.0120 T23: -0.0129 REMARK 3 L TENSOR REMARK 3 L11: 2.2211 L22: 3.7623 REMARK 3 L33: 5.9963 L12: -1.2207 REMARK 3 L13: 2.3877 L23: -2.2233 REMARK 3 S TENSOR REMARK 3 S11: -0.3193 S12: -0.0208 S13: 0.2116 REMARK 3 S21: 0.1839 S22: 0.0501 S23: -0.1541 REMARK 3 S31: -2.2253 S32: 0.7836 S33: 0.2692 REMARK 3 TLS GROUP : 2 REMARK 3 SELECTION: (CHAIN 'B' AND RESID 376 THROUGH 414) REMARK 3 ORIGIN FOR THE GROUP (A): 33.8607 12.3516 43.0523 REMARK 3 T TENSOR REMARK 3 T11: 0.3529 T22: 0.2354 REMARK 3 T33: 0.3824 T12: -0.0587 REMARK 3 T13: 0.0329 T23: -0.0025 REMARK 3 L TENSOR REMARK 3 L11: 3.7459 L22: 0.9603 REMARK 3 L33: 2.6528 L12: 0.0224 REMARK 3 L13: -2.8431 L23: 0.0334 REMARK 3 S TENSOR REMARK 3 S11: -0.4216 S12: 0.3744 S13: -0.2316 REMARK 3 S21: 0.0032 S22: -0.1406 S23: 0.1228 REMARK 3 S31: 1.4810 S32: -1.5087 S33: 0.4885 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 6D42 COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 20-APR-18. REMARK 100 THE DEPOSITION ID IS D_1000233953. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 09-JUL-15 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 6.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 24-ID-E REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9792 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : ADSC QUANTUM 315 REMARK 200 INTENSITY-INTEGRATION SOFTWARE : HKL-2000 REMARK 200 DATA SCALING SOFTWARE : HKL-2000 REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 16141 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.750 REMARK 200 RESOLUTION RANGE LOW (A) : 35.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 99.1 REMARK 200 DATA REDUNDANCY : 4.800 REMARK 200 R MERGE (I) : 0.06300 REMARK 200 R SYM (I) : NULL REMARK 200 FOR THE DATA SET : 34.8000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.75 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.78 REMARK 200 COMPLETENESS FOR SHELL (%) : 95.4 REMARK 200 DATA REDUNDANCY IN SHELL : 3.30 REMARK 200 R MERGE FOR SHELL (I) : 0.72300 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 FOR SHELL : 2.000 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: SAD REMARK 200 SOFTWARE USED: PHENIX 1.11.1_2575 REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 48.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.37 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1 M IMIDAZOLE, PH 6.5 1.0 M SODIUM REMARK 280 ACETATE, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 290K 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 18.79500 REMARK 290 SMTRY2 3 1.000000 0.000000 0.000000 18.79500 REMARK 290 SMTRY3 3 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 4 0.000000 1.000000 0.000000 18.79500 REMARK 290 SMTRY2 4 -1.000000 0.000000 0.000000 18.79500 REMARK 290 SMTRY3 4 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 5 -1.000000 0.000000 0.000000 18.79500 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 18.79500 REMARK 290 SMTRY3 5 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 6 1.000000 0.000000 0.000000 18.79500 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 18.79500 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, 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: 6830 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 8690 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -95.0 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 37.59000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 3 0.000000 -1.000000 0.000000 18.79500 REMARK 350 BIOMT2 3 1.000000 0.000000 0.000000 -18.79500 REMARK 350 BIOMT3 3 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 4 0.000000 1.000000 0.000000 18.79500 REMARK 350 BIOMT2 4 -1.000000 0.000000 0.000000 18.79500 REMARK 350 BIOMT3 4 0.000000 0.000000 1.000000 0.00000 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: 6470 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 8960 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -89.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: B 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 75.18000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 37.59000 REMARK 350 BIOMT3 2 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 3 0.000000 -1.000000 0.000000 56.38500 REMARK 350 BIOMT2 3 1.000000 0.000000 0.000000 -18.79500 REMARK 350 BIOMT3 3 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 4 0.000000 1.000000 0.000000 18.79500 REMARK 350 BIOMT2 4 -1.000000 0.000000 0.000000 56.38500 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 CU CU A 501 LIES ON A SPECIAL POSITION. REMARK 375 CU CU B 501 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 623 LIES ON A SPECIAL POSITION. REMARK 375 HOH B 610 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 374 REMARK 465 SER A 375 REMARK 465 GLY A 415 REMARK 465 GLY B 374 REMARK 465 SER B 375 REMARK 465 GLY B 415 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 394 CG CD CE NZ 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 CU A 501 CU REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS A 389 NE2 REMARK 620 2 HOH A 623 O 92.5 REMARK 620 3 HIS A 389 NE2 0.0 92.5 REMARK 620 4 HOH A 623 O 92.5 0.0 92.5 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 CU B 501 CU REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B 389 NE2 REMARK 620 2 HOH B 610 O 92.4 REMARK 620 3 HIS B 389 NE2 0.0 92.4 REMARK 620 4 HOH B 610 O 92.4 0.0 92.4 REMARK 620 N 1 2 3 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue CU A 501 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: binding site for residue CU B 501 DBREF 6D42 A 376 415 UNP O15554 KCNN4_HUMAN 376 415 DBREF 6D42 B 376 415 UNP O15554 KCNN4_HUMAN 376 415 SEQADV 6D42 GLY A 374 UNP O15554 EXPRESSION TAG SEQADV 6D42 SER A 375 UNP O15554 EXPRESSION TAG SEQADV 6D42 GLY B 374 UNP O15554 EXPRESSION TAG SEQADV 6D42 SER B 375 UNP O15554 EXPRESSION TAG SEQRES 1 A 42 GLY SER MSE ILE LEU TYR ASP LEU GLN GLN ASN LEU SER SEQRES 2 A 42 SER SER HIS ARG ALA LEU GLU LYS GLN ILE ASP THR LEU SEQRES 3 A 42 ALA GLY LYS LEU ASP ALA LEU THR GLU LEU LEU SER THR SEQRES 4 A 42 ALA LEU GLY SEQRES 1 B 42 GLY SER MSE ILE LEU TYR ASP LEU GLN GLN ASN LEU SER SEQRES 2 B 42 SER SER HIS ARG ALA LEU GLU LYS GLN ILE ASP THR LEU SEQRES 3 B 42 ALA GLY LYS LEU ASP ALA LEU THR GLU LEU LEU SER THR SEQRES 4 B 42 ALA LEU GLY MODRES 6D42 MSE A 376 MET MODIFIED RESIDUE MODRES 6D42 MSE B 376 MET MODIFIED RESIDUE HET MSE A 376 8 HET MSE B 376 8 HET CU A 501 1 HET CU B 501 1 HETNAM MSE SELENOMETHIONINE HETNAM CU COPPER (II) ION FORMUL 1 MSE 2(C5 H11 N O2 SE) FORMUL 3 CU 2(CU 2+) FORMUL 5 HOH *42(H2 O) HELIX 1 AA1 ILE A 377 LEU A 414 1 38 HELIX 2 AA2 ILE B 377 LEU B 414 1 38 LINK C MSE A 376 N ILE A 377 1555 1555 1.33 LINK NE2 HIS A 389 CU CU A 501 1555 1555 2.09 LINK C MSE B 376 N ILE B 377 1555 1555 1.33 LINK NE2 HIS B 389 CU CU B 501 1555 1555 2.01 LINK CU CU A 501 O HOH A 623 1555 1555 2.42 LINK CU CU B 501 O HOH B 610 1555 1555 2.42 LINK NE2 HIS A 389 CU CU A 501 1555 3545 2.09 LINK NE2 HIS B 389 CU CU B 501 1555 4565 2.01 LINK CU CU A 501 O HOH A 623 1555 3545 2.42 LINK CU CU B 501 O HOH B 610 1555 4565 2.42 SITE 1 AC1 2 HIS A 389 HOH A 623 SITE 1 AC2 2 HIS B 389 HOH B 610 CRYST1 37.590 37.590 116.946 90.00 90.00 90.00 P 4 21 2 16 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 0.026603 0.000000 0.000000 0.00000 SCALE2 0.000000 0.026603 0.000000 0.00000 SCALE3 0.000000 0.000000 0.008551 0.00000 HETATM 1 N MSE A 376 13.359 8.356 -12.047 1.00 86.59 N ANISOU 1 N MSE A 376 14955 8589 9358 1633 -1340 228 N HETATM 2 CA MSE A 376 14.025 7.704 -10.925 1.00 81.12 C ANISOU 2 CA MSE A 376 13896 8054 8872 1622 -1195 236 C HETATM 3 C MSE A 376 15.537 7.717 -11.120 1.00 70.49 C ANISOU 3 C MSE A 376 12635 7002 7146 1416 -875 398 C HETATM 4 O MSE A 376 16.068 6.982 -11.951 1.00 74.51 O ANISOU 4 O MSE A 376 13098 7809 7406 1557 -776 349 O HETATM 5 CB MSE A 376 13.531 6.262 -10.755 1.00 93.23 C ANISOU 5 CB MSE A 376 14876 9826 10722 1832 -1297 21 C HETATM 6 CG MSE A 376 12.423 6.073 -9.712 1.00107.94 C ANISOU 6 CG MSE A 376 16160 11801 13054 1704 -1339 -47 C HETATM 7 SE MSE A 376 13.024 5.984 -7.840 1.00117.01 SE ANISOU 7 SE MSE A 376 16865 13078 14517 1555 -1118 -3 SE HETATM 8 CE MSE A 376 14.617 4.882 -8.079 1.00120.75 C ANISOU 8 CE MSE A 376 17369 13703 14808 1765 -1011 -40 C