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- PDB-2l4r: NMR solution structure of the N-terminal PAS domain of hERG -

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Basic information

Entry
Database: PDB / ID: 2l4r
TitleNMR solution structure of the N-terminal PAS domain of hERG
ComponentsPotassium voltage-gated channel subfamily H member 2
KeywordsTRANSPORT PROTEIN / hERG / potassium channel / PAS domain / eag domain
Function / homology
Function and homology information


inward rectifier potassium channel complex / negative regulation of potassium ion export across plasma membrane / regulation of heart rate by hormone / Phase 3 - rapid repolarisation / voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarization / membrane repolarization during action potential / negative regulation of potassium ion transmembrane transport / membrane repolarization during ventricular cardiac muscle cell action potential / membrane depolarization during action potential / potassium ion export across plasma membrane ...inward rectifier potassium channel complex / negative regulation of potassium ion export across plasma membrane / regulation of heart rate by hormone / Phase 3 - rapid repolarisation / voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarization / membrane repolarization during action potential / negative regulation of potassium ion transmembrane transport / membrane repolarization during ventricular cardiac muscle cell action potential / membrane depolarization during action potential / potassium ion export across plasma membrane / membrane repolarization during cardiac muscle cell action potential / C3HC4-type RING finger domain binding / voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization / membrane repolarization / regulation of membrane repolarization / delayed rectifier potassium channel activity / positive regulation of potassium ion transmembrane transport / inward rectifier potassium channel activity / Voltage gated Potassium channels / potassium ion homeostasis / ventricular cardiac muscle cell action potential / regulation of potassium ion transmembrane transport / regulation of ventricular cardiac muscle cell membrane repolarization / potassium ion import across plasma membrane / regulation of heart rate by cardiac conduction / voltage-gated potassium channel activity / voltage-gated potassium channel complex / cardiac muscle contraction / potassium ion transmembrane transport / regulation of membrane potential / cellular response to xenobiotic stimulus / scaffold protein binding / transcription cis-regulatory region binding / ubiquitin protein ligase binding / perinuclear region of cytoplasm / positive regulation of DNA-templated transcription / cell surface / protein homodimerization activity / identical protein binding / plasma membrane
Similarity search - Function
Potassium channel, voltage-dependent, ERG / Potassium channel, voltage-dependent, EAG/ELK/ERG / PAS-associated, C-terminal / PAC domain profile. / PAS domain / PAC motif / Motif C-terminal to PAS motifs (likely to contribute to PAS structural domain) / PAS domain / Cyclic nucleotide-monophosphate binding domain / Cyclic nucleotide-binding domain ...Potassium channel, voltage-dependent, ERG / Potassium channel, voltage-dependent, EAG/ELK/ERG / PAS-associated, C-terminal / PAC domain profile. / PAS domain / PAC motif / Motif C-terminal to PAS motifs (likely to contribute to PAS structural domain) / PAS domain / Cyclic nucleotide-monophosphate binding domain / Cyclic nucleotide-binding domain / cAMP/cGMP binding motif profile. / Cyclic nucleotide-binding domain / Cyclic nucleotide-binding domain superfamily / Beta-Lactamase / PAS repeat profile. / PAS domain / RmlC-like jelly roll fold / PAS domain superfamily / Ion transport domain / Ion transport protein / 2-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
Potassium voltage-gated channel subfamily H member 2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodSOLUTION NMR / torsion angle dynamics
Model detailslowest energy, model 1
AuthorsGayen, N. / Li, Q. / Chen, A.S. / Huang, Q. / Raida, M. / Kang, C.
CitationJournal: Biochem.Biophys.Res.Commun. / Year: 2010
Title: NMR solution structure of the N-terminal domain of hERG and its interaction with the S4-S5 linker.
Authors: Li, Q. / Gayen, S. / Chen, A.S. / Huang, Q. / Raida, M. / Kang, C.
History
DepositionOct 13, 2010Deposition site: BMRB / Processing site: PDBJ
Revision 1.0Dec 22, 2010Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Potassium voltage-gated channel subfamily H member 2


Theoretical massNumber of molelcules
Total (without water)15,2991
Polymers15,2991
Non-polymers00
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
NMR ensembles
DataCriteria
Number of conformers (submitted / calculated)20 / 100structures with the lowest energy
RepresentativeModel #1lowest energy

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Components

#1: Protein Potassium voltage-gated channel subfamily H member 2 / Eag homolog / Ether-a-go-go-related gene potassium channel 1 / ERG-1 / Eag-related protein 1 / ...Eag homolog / Ether-a-go-go-related gene potassium channel 1 / ERG-1 / Eag-related protein 1 / Ether-a-go-go-related protein 1 / H-ERG / hERG-1 / hERG1 / Voltage-gated potassium channel subunit Kv11.1


Mass: 15298.812 Da / Num. of mol.: 1 / Fragment: UNP RESIDUES 1-135
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: KCNH2, ERG, ERG1, HERG / Production host: Escherichia coli (E. coli) / References: UniProt: Q12809

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Experimental details

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Experiment

ExperimentMethod: SOLUTION NMR
NMR experiment
Conditions-IDExperiment-IDSolution-IDType
1113D 1H-15N NOESY
1213D 1H-13C NOESY
1312D 1H-15N HSQC

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Sample preparation

DetailsContents: 0.5-1 mM [U-99% 13C; U-99% 15N] entity-1, 5 mM DTT-2, 1 mM EDTA-3, 150 mM sodium chloride-4, 20 mM sodium phosphate-5, 90% H2O/10% D2O
Solvent system: 90% H2O/10% D2O
Sample
Conc. (mg/ml)UnitsComponentIsotopic labelingConc. range (mg/ml)Solution-ID
mMentity-1[U-99% 13C; U-99% 15N]0.5-11
5 mMDTT-21
1 mMEDTA-31
150 mMsodium chloride-41
20 mMsodium phosphate-51
Sample conditionsIonic strength: 150 / pH: 6.5 / Pressure: AMBIENT / Temperature: 298 K

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NMR measurement

NMR spectrometer
TypeManufacturerModelField strength (MHz)Spectrometer-ID
Bruker AvanceBrukerAvance6001
Bruker AvanceBrukerAvance7002
Bruker AvanceBrukerAvance8003

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Processing

NMR software
NameVersionDeveloperClassification
NMRPipeDelaglio, Grzesiek, Vuister, Zhu, Pfeifer and Baxprocessing
CYANA2.1Guntert, Mumenthaler and Wuthrichstructure solution
SPARKYGoddardchemical shift assignment
SPARKYGoddardpeak picking
TOPSPIN2.1Bruker Biospincollection
TOPSPIN2.1Bruker Biospinprocessing
CYANA2.1Guntert, Mumenthaler and Wuthrichrefinement
RefinementMethod: torsion angle dynamics / Software ordinal: 1
NMR representativeSelection criteria: lowest energy
NMR ensembleConformer selection criteria: structures with the lowest energy
Conformers calculated total number: 100 / Conformers submitted total number: 20 / Representative conformer: 1

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