PDB Short entry for 2AHY HEADER TRANSPORT PROTEIN 28-JUL-05 2AHY TITLE NA+ COMPLEX OF THE NAK CHANNEL COMPND MOL_ID: 1; COMPND 2 MOLECULE: POTASSIUM CHANNEL PROTEIN; COMPND 3 CHAIN: A, B; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: BACILLUS CEREUS; SOURCE 3 ORGANISM_TAXID: 1396; SOURCE 4 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 6 EXPRESSION_SYSTEM_STRAIN: XL-1 BLUE; SOURCE 7 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 8 EXPRESSION_SYSTEM_PLASMID: PQE 60 KEYWDS INVERTED TEEPEE, HELIX BUNDLE, TETRAMER, CENTRAL CAVITY, ION BINDING, KEYWDS 2 TRANSPORT PROTEIN EXPDTA X-RAY DIFFRACTION AUTHOR N.SHI,S.YE,A.ALAM,L.CHEN,Y.JIANG REVDAT 5 13-JUL-11 2AHY 1 VERSN REVDAT 4 24-FEB-09 2AHY 1 VERSN REVDAT 3 04-APR-06 2AHY 1 JRNL REVDAT 2 28-MAR-06 2AHY 1 JRNL REVDAT 1 07-FEB-06 2AHY 0 JRNL AUTH N.SHI,S.YE,A.ALAM,L.CHEN,Y.JIANG JRNL TITL ATOMIC STRUCTURE OF A NA+- AND K+-CONDUCTING CHANNEL. JRNL REF NATURE V. 440 570 2006 JRNL REFN ISSN 0028-0836 JRNL PMID 16467789 JRNL DOI 10.1038/NATURE04508 REMARK 2 REMARK 2 RESOLUTION. 2.40 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : CNS 1.1 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) : 19.70 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 DATA CUTOFF HIGH (ABS(F)) : NULL REMARK 3 DATA CUTOFF LOW (ABS(F)) : NULL REMARK 3 COMPLETENESS (WORKING+TEST) (%) : 97.7 REMARK 3 NUMBER OF REFLECTIONS : 17645 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) : 0.236 REMARK 3 FREE R VALUE : 0.261 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 9.600 REMARK 3 FREE R VALUE TEST SET COUNT : 1734 REMARK 3 ESTIMATED ERROR OF FREE R VALUE : NULL REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 10 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.40 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.49 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : 84.10 REMARK 3 REFLECTIONS IN BIN (WORKING SET) : 1407 REMARK 3 BIN R VALUE (WORKING SET) : 0.3099 REMARK 3 BIN FREE R VALUE : 0.3680 REMARK 3 BIN FREE R VALUE TEST SET SIZE (%) : 8.93 REMARK 3 BIN FREE R VALUE TEST SET COUNT : 138 REMARK 3 ESTIMATED ERROR OF BIN FREE R VALUE : NULL REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 1646 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 5 REMARK 3 SOLVENT ATOMS : 19 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 59.50 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 73.43 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.60300 REMARK 3 B22 (A**2) : -0.87400 REMARK 3 B33 (A**2) : 0.27100 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 ESTIMATED COORDINATE ERROR. REMARK 3 ESD FROM LUZZATI PLOT (A) : 0.31 REMARK 3 ESD FROM SIGMAA (A) : 0.25 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) : 0.31 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES. REMARK 3 BOND LENGTHS (A) : 0.006 REMARK 3 BOND ANGLES (DEGREES) : 1.14 REMARK 3 DIHEDRAL ANGLES (DEGREES) : 17.47 REMARK 3 IMPROPER ANGLES (DEGREES) : 0.69 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) : 5.750 ; NULL REMARK 3 MAIN-CHAIN ANGLE (A**2) : 7.216 ; NULL REMARK 3 SIDE-CHAIN BOND (A**2) : 9.206 ; NULL REMARK 3 SIDE-CHAIN ANGLE (A**2) : 11.047; NULL REMARK 3 REMARK 3 BULK SOLVENT MODELING. REMARK 3 METHOD USED : FLAT MODEL REMARK 3 KSOL : 0.33 REMARK 3 BSOL : 74.68 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 : ION.PARAM REMARK 3 PARAMETER FILE 3 : WATER_REP.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 : ION.TOP REMARK 3 TOPOLOGY FILE 4 : NULL REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: NULL REMARK 4 REMARK 4 2AHY COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY RCSB ON 25-AUG-05. REMARK 100 THE RCSB ID CODE IS RCSB033916. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 11-FEB-05 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 8.00 REMARK 200 NUMBER OF CRYSTALS USED : 3 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : APS REMARK 200 BEAMLINE : 19-ID REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 0.9791 REMARK 200 MONOCHROMATOR : NULL 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 : 17824 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.400 REMARK 200 RESOLUTION RANGE LOW (A) : 19.700 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : NULL REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 97.6 REMARK 200 DATA REDUNDANCY : 5.000 REMARK 200 R MERGE (I) : 0.04500 REMARK 200 R SYM (I) : 0.04500 REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 35.0000 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) : 2.49 REMARK 200 COMPLETENESS FOR SHELL (%) : 84.1 REMARK 200 DATA REDUNDANCY IN SHELL : 3.40 REMARK 200 R MERGE FOR SHELL (I) : 0.55500 REMARK 200 R SYM FOR SHELL (I) : 0.55500 REMARK 200 <I/SIGMA(I)> FOR SHELL : 1.800 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: SIRAS REMARK 200 SOFTWARE USED: MLPHARE REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 72.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 4.38 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 400, NACL, CACL2, TRIS.HCL, T- REMARK 280 BUTANOL, N-DECYL-BETA-D-MALTOPYRANOSIDE, PH 8.0, VAPOR DIFFUSION, REMARK 280 SITTING DROP, TEMPERATURE 293 K, PH 8.00 REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: C 2 2 21 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z+1/2 REMARK 290 3555 -X,Y,-Z+1/2 REMARK 290 4555 X,-Y,-Z REMARK 290 5555 X+1/2,Y+1/2,Z REMARK 290 6555 -X+1/2,-Y+1/2,Z+1/2 REMARK 290 7555 -X+1/2,Y+1/2,-Z+1/2 REMARK 290 8555 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 64.78600 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 64.78600 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 0.00000 REMARK 290 SMTRY1 5 1.000000 0.000000 0.000000 40.76400 REMARK 290 SMTRY2 5 0.000000 1.000000 0.000000 42.74100 REMARK 290 SMTRY3 5 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 6 -1.000000 0.000000 0.000000 40.76400 REMARK 290 SMTRY2 6 0.000000 -1.000000 0.000000 42.74100 REMARK 290 SMTRY3 6 0.000000 0.000000 1.000000 64.78600 REMARK 290 SMTRY1 7 -1.000000 0.000000 0.000000 40.76400 REMARK 290 SMTRY2 7 0.000000 1.000000 0.000000 42.74100 REMARK 290 SMTRY3 7 0.000000 0.000000 -1.000000 64.78600 REMARK 290 SMTRY1 8 1.000000 0.000000 0.000000 40.76400 REMARK 290 SMTRY2 8 0.000000 -1.000000 0.000000 42.74100 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 DIMER IN THE ASYMMETRIC UNIT BY THE CRYSTALLOGRAPHIC TWO FOLD: X , REMARK 300 -Y , -Z 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: 10610 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 20170 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -155.0 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, 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 0.00000 REMARK 350 BIOMT2 2 0.000000 -1.000000 0.000000 85.48200 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 129.57200 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 NA NA A 115 LIES ON A SPECIAL POSITION. REMARK 375 NA NA A 111 LIES ON A SPECIAL POSITION. REMARK 375 NA NA A 112 LIES ON A SPECIAL POSITION. REMARK 375 CA CA A 114 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 118 LIES ON A SPECIAL POSITION. REMARK 375 NA NA A 113 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 117 LIES ON A SPECIAL POSITION. REMARK 375 HOH A 116 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 PRO A 105 REMARK 465 SER A 106 REMARK 465 ILE A 107 REMARK 465 LEU A 108 REMARK 465 SER A 109 REMARK 465 ASN A 110 REMARK 465 LEU B 104 REMARK 465 PRO B 105 REMARK 465 SER B 106 REMARK 465 ILE B 107 REMARK 465 LEU B 108 REMARK 465 SER B 109 REMARK 465 ASN B 110 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 MET A 1 CG SD CE REMARK 470 MET B 1 CG SD CE 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 TRP B 19 10.81 -67.26 REMARK 500 REMARK 500 REMARK: NULL REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE): REMARK 525 REMARK 525 M RES CSSEQI REMARK 525 HOH A 116 DISTANCE = 7.56 ANGSTROMS REMARK 525 HOH A 117 DISTANCE = 6.16 ANGSTROMS REMARK 525 HOH A 118 DISTANCE = 5.69 ANGSTROMS REMARK 525 HOH B 111 DISTANCE = 5.21 ANGSTROMS REMARK 525 HOH B 120 DISTANCE = 5.17 ANGSTROMS 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 114 CA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 GLY A 67 O REMARK 620 2 GLY B 67 O 78.6 REMARK 620 N 1 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 NA A 111 NA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 63 O REMARK 620 2 VAL A 64 O 70.5 REMARK 620 3 THR B 63 O 70.3 75.8 REMARK 620 4 VAL B 64 O 137.1 82.6 71.0 REMARK 620 N 1 2 3 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 NA A 112 NA REMARK 620 N RES CSSEQI ATOM REMARK 620 1 THR A 63 OG1 REMARK 620 2 THR B 63 OG1 88.9 REMARK 620 N 1 REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NA A 111 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE NA A 112 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC3 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE CA A 114 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2AHZ RELATED DB: PDB REMARK 900 K+ COMPLEX OF THE NAK CHANNEL DBREF 2AHY A 1 110 GB 29894393 AAP07683 1 110 DBREF 2AHY B 1 110 GB 29894393 AAP07683 1 110 SEQRES 1 A 110 MET LEU SER PHE LEU LEU THR LEU LYS ARG MET LEU ARG SEQRES 2 A 110 ALA CYS LEU ARG ALA TRP LYS ASP LYS GLU PHE GLN VAL SEQRES 3 A 110 LEU PHE VAL LEU THR ILE LEU THR LEU ILE SER GLY THR SEQRES 4 A 110 ILE PHE TYR SER THR VAL GLU GLY LEU ARG PRO ILE ASP SEQRES 5 A 110 ALA LEU TYR PHE SER VAL VAL THR LEU THR THR VAL GLY SEQRES 6 A 110 ASP GLY ASN PHE SER PRO GLN THR ASP PHE GLY LYS ILE SEQRES 7 A 110 PHE THR ILE LEU TYR ILE PHE ILE GLY ILE GLY LEU VAL SEQRES 8 A 110 PHE GLY PHE ILE HIS LYS LEU ALA VAL ASN VAL GLN LEU SEQRES 9 A 110 PRO SER ILE LEU SER ASN SEQRES 1 B 110 MET LEU SER PHE LEU LEU THR LEU LYS ARG MET LEU ARG SEQRES 2 B 110 ALA CYS LEU ARG ALA TRP LYS ASP LYS GLU PHE GLN VAL SEQRES 3 B 110 LEU PHE VAL LEU THR ILE LEU THR LEU ILE SER GLY THR SEQRES 4 B 110 ILE PHE TYR SER THR VAL GLU GLY LEU ARG PRO ILE ASP SEQRES 5 B 110 ALA LEU TYR PHE SER VAL VAL THR LEU THR THR VAL GLY SEQRES 6 B 110 ASP GLY ASN PHE SER PRO GLN THR ASP PHE GLY LYS ILE SEQRES 7 B 110 PHE THR ILE LEU TYR ILE PHE ILE GLY ILE GLY LEU VAL SEQRES 8 B 110 PHE GLY PHE ILE HIS LYS LEU ALA VAL ASN VAL GLN LEU SEQRES 9 B 110 PRO SER ILE LEU SER ASN HET NA A 111 1 HET NA A 112 1 HET NA A 113 1 HET CA A 114 1 HET NA A 115 1 HETNAM NA SODIUM ION HETNAM CA CALCIUM ION FORMUL 3 NA 4(NA 1+) FORMUL 6 CA CA 2+ FORMUL 8 HOH *19(H2 O) HELIX 1 1 MET A 1 TRP A 19 1 19 HELIX 2 2 ASP A 21 VAL A 45 1 25 HELIX 3 3 ARG A 49 THR A 62 1 14 HELIX 4 4 THR A 73 LEU A 104 1 32 HELIX 5 5 MET B 1 ARG B 17 1 17 HELIX 6 6 ASP B 21 VAL B 45 1 25 HELIX 7 7 ARG B 49 THR B 62 1 14 HELIX 8 8 THR B 73 ASN B 101 1 29 LINK CA CA A 114 O GLY A 67 1555 1555 2.20 LINK CA CA A 114 O GLY B 67 1555 1555 2.24 LINK CA CA A 114 O GLY B 67 1555 4566 2.24 LINK CA CA A 114 O GLY A 67 1555 4566 2.21 LINK O THR A 63 NA NA A 111 1555 1555 2.72 LINK OG1 THR A 63 NA NA A 112 1555 1555 2.61 LINK O VAL A 64 NA NA A 111 1555 1555 2.73 LINK O THR B 63 NA NA A 111 1555 1555 2.73 LINK OG1 THR B 63 NA NA A 112 1555 1555 2.68 LINK O VAL B 64 NA NA A 111 1555 1555 2.79 SITE 1 AC1 4 THR A 63 VAL A 64 THR B 63 VAL B 64 SITE 1 AC2 2 THR A 63 THR B 63 SITE 1 AC3 2 GLY A 67 GLY B 67 CRYST1 81.528 85.482 129.572 90.00 90.00 90.00 C 2 2 21 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 0.012266 0.000000 0.000000 0.00000 SCALE2 0.000000 0.011698 0.000000 0.00000 SCALE3 0.000000 0.000000 0.007718 0.00000