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- PDB-2l0e: Structural and functional analysis of tm vi of the nhe1 isoform o... -

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Basic information

Entry
Database: PDB / ID: 2l0e
TitleStructural and functional analysis of tm vi of the nhe1 isoform of the na+/h+ exchanger
ComponentsSodium/hydrogen exchanger 1
KeywordsMEMBRANE PROTEIN / transmembrane helix / NHE1
Function / homology
Function and homology information


sodium:proton antiporter activity involved in regulation of cardiac muscle cell membrane potential / cation-transporting ATPase complex / Sodium/Proton exchangers / regulation of the force of heart contraction by cardiac conduction / positive regulation of calcium:sodium antiporter activity / Hyaluronan uptake and degradation / regulation of cardiac muscle cell membrane potential / cellular response to electrical stimulus / potassium:proton antiporter activity / sodium:proton antiporter activity ...sodium:proton antiporter activity involved in regulation of cardiac muscle cell membrane potential / cation-transporting ATPase complex / Sodium/Proton exchangers / regulation of the force of heart contraction by cardiac conduction / positive regulation of calcium:sodium antiporter activity / Hyaluronan uptake and degradation / regulation of cardiac muscle cell membrane potential / cellular response to electrical stimulus / potassium:proton antiporter activity / sodium:proton antiporter activity / positive regulation of action potential / maintenance of cell polarity / positive regulation of calcineurin-NFAT signaling cascade / regulation of pH / sodium ion export across plasma membrane / cellular response to acidic pH / cardiac muscle cell differentiation / ion binding / sodium ion import across plasma membrane / protein phosphatase 2B binding / intracellular sodium ion homeostasis / cardiac muscle cell contraction / response to acidic pH / regulation of stress fiber assembly / regulation of cardiac muscle contraction by calcium ion signaling / positive regulation of mitochondrial membrane permeability / cellular response to cold / cellular response to antibiotic / regulation of focal adhesion assembly / positive regulation of cardiac muscle hypertrophy / positive regulation of the force of heart contraction / cellular response to organic cyclic compound / intercalated disc / monoatomic ion transport / potassium ion transmembrane transport / proton transmembrane transport / T-tubule / cellular response to epinephrine stimulus / response to muscle stretch / phosphatidylinositol-4,5-bisphosphate binding / stem cell differentiation / regulation of intracellular pH / phospholipid binding / cellular response to mechanical stimulus / cellular response to insulin stimulus / calcium-dependent protein binding / cell migration / lamellipodium / protein complex oligomerization / protein-macromolecule adaptor activity / cellular response to hypoxia / positive regulation of cell growth / basolateral plasma membrane / molecular adaptor activity / calmodulin binding / positive regulation of apoptotic process / membrane raft / apical plasma membrane / focal adhesion / negative regulation of apoptotic process / perinuclear region of cytoplasm / cell surface / positive regulation of transcription by RNA polymerase II / mitochondrion / extracellular exosome / nucleoplasm / identical protein binding / membrane / plasma membrane / cytoplasm
Similarity search - Function
Sodium/hydrogen exchanger 1-like / Sodium/hydrogen exchanger, regulatory region / Regulatory region of Na+/H+ exchanger NHE binds to calmodulin / Na+/H+ exchanger / Cation/H+ exchanger, CPA1 family / Cation/H+ exchanger / Sodium/hydrogen exchanger family
Similarity search - Domain/homology
Sodium/hydrogen exchanger 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodSOLUTION NMR / simulated annealing
Model detailslowest energy, model 1
AuthorsTzeng, J. / Lee, B.L. / Sykes, B.D. / Fliegel, L.
CitationJournal: J.Biol.Chem. / Year: 2010
Title: Structural and Functional Analysis of Transmembrane Segment VI of the NHE1 Isoform of the Na+/H+ Exchanger.
Authors: Tzeng, J. / Lee, B.L. / Sykes, B.D. / Fliegel, L.
History
DepositionJul 1, 2010Deposition site: BMRB / Processing site: RCSB
Revision 1.0Sep 15, 2010Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Feb 5, 2020Group: Data collection / Database references / Other
Category: database_2 / pdbx_database_status ...database_2 / pdbx_database_status / pdbx_nmr_software / struct_ref_seq_dif
Item: _pdbx_database_status.status_code_cs / _pdbx_nmr_software.name / _struct_ref_seq_dif.details
Revision 1.3May 1, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Sodium/hydrogen exchanger 1


Theoretical massNumber of molelcules
Total (without water)3,4691
Polymers3,4691
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
NMR ensembles
DataCriteria
Number of conformers (submitted / calculated)40 / 50structures with the lowest energy
RepresentativeModel #1lowest energy

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Components

#1: Protein/peptide Sodium/hydrogen exchanger 1 / Na(+)/H(+) exchanger 1 / NHE-1 / Solute carrier family 9 member 1 / Na(+)/H(+) antiporter / ...Na(+)/H(+) exchanger 1 / NHE-1 / Solute carrier family 9 member 1 / Na(+)/H(+) antiporter / amiloride-sensitive / APNH


Mass: 3469.166 Da / Num. of mol.: 1
Fragment: transmembrane segment VI of NHE1, UNP residues 226-250
Source method: obtained synthetically
Details: Transmembrane segment VI of NHE1, UNP residues 226-250
Source: (synth.) Homo sapiens (human) / References: UniProt: P19634

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Experimental details

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Experiment

ExperimentMethod: SOLUTION NMR
NMR experiment
Conditions-IDExperiment-IDSolution-IDType
1112D DQF-COSY
1212D 1H-1H TOCSY
1312D 1H-1H NOESY
1412D 1H-1H NOESY

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Sample preparation

DetailsContents: 2 mM TM VI-1, 0.25 mM DSS-2, 150 mM [U-2H] DPC-3, 95% H2O/5% D2O
Solvent system: 95% H2O/5% D2O
Sample
Conc. (mg/ml)ComponentIsotopic labelingSolution-ID
2 mMTM VI-11
0.25 mMDSS-21
150 mMDPC-3[U-2H]1
Sample conditionsIonic strength: 0 / pH: 5 / Pressure: ambient / Temperature: 303 K

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NMR measurement

NMR spectrometer
TypeManufacturerModelField strength (MHz)Spectrometer-ID
Varian INOVAVarianINOVA5001
Varian INOVAVarianINOVA8002

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Processing

NMR software
NameDeveloperClassification
VnmrJVariancollection
NMRPipeDelaglio, Grzesiek, Vuister, Zhu, Pfeifer and Baxprocessing
NMRViewJohnson, One Moon Scientificpeak picking
NMRViewJohnson, One Moon Scientificchemical shift assignment
NMRViewJohnson, One Moon Scientificpeak assignment
X-PLOR NIHSchwieters, Kuszewski, Tjandra and Clorestructure solution
X-PLOR NIHSchwieters, Kuszewski, Tjandra and Clorerefinement
RefinementMethod: simulated annealing / Software ordinal: 1
NMR constraintsNOE constraints total: 750 / NOE intraresidue total count: 194 / NOE long range total count: 4 / NOE medium range total count: 201 / NOE sequential total count: 199 / Protein chi angle constraints total count: 0 / Protein other angle constraints total count: 0 / Protein phi angle constraints total count: 20 / Protein psi angle constraints total count: 20
NMR representativeSelection criteria: lowest energy
NMR ensembleConformer selection criteria: structures with the lowest energy
Conformers calculated total number: 50 / Conformers submitted total number: 40

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