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- PDB-6zbi: Ternary complex of Calmodulin bound to 2 molecules of NHE1 -

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Basic information

Entry
Database: PDB / ID: 6zbi
TitleTernary complex of Calmodulin bound to 2 molecules of NHE1
Components
  • Calmodulin-1
  • Sodium/hydrogen exchanger 1
KeywordsMETAL BINDING PROTEIN / Complex / NHE1 / Calmodulin / Signaling
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 / CaM pathway / positive regulation of mitochondrial membrane permeability / Cam-PDE 1 activation / Sodium/Calcium exchangers / Calmodulin induced events / cellular response to cold / Reduction of cytosolic Ca++ levels / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / Activation of Ca-permeable Kainate Receptor / Loss of phosphorylation of MECP2 at T308 / cellular response to antibiotic / CREB1 phosphorylation through the activation of Adenylate Cyclase / PKA activation / negative regulation of high voltage-gated calcium channel activity / CaMK IV-mediated phosphorylation of CREB / regulation of focal adhesion assembly / Glycogen breakdown (glycogenolysis) / positive regulation of cyclic-nucleotide phosphodiesterase activity / organelle localization by membrane tethering / negative regulation of calcium ion export across plasma membrane / CLEC7A (Dectin-1) induces NFAT activation / regulation of cardiac muscle cell action potential / mitochondrion-endoplasmic reticulum membrane tethering / autophagosome membrane docking / Activation of RAC1 downstream of NMDARs / positive regulation of ryanodine-sensitive calcium-release channel activity / positive regulation of cardiac muscle hypertrophy / regulation of cell communication by electrical coupling involved in cardiac conduction / Negative regulation of NMDA receptor-mediated neuronal transmission / negative regulation of peptidyl-threonine phosphorylation / Synthesis of IP3 and IP4 in the cytosol / Unblocking of NMDA receptors, glutamate binding and activation / Phase 0 - rapid depolarisation / protein phosphatase activator activity / RHO GTPases activate PAKs / positive regulation of the force of heart contraction / positive regulation of phosphoprotein phosphatase activity / Ion transport by P-type ATPases / Long-term potentiation / Uptake and function of anthrax toxins / cellular response to organic cyclic compound / Calcineurin activates NFAT / Regulation of MECP2 expression and activity / catalytic complex / intercalated disc / DARPP-32 events / detection of calcium ion / regulation of cardiac muscle contraction / negative regulation of ryanodine-sensitive calcium-release channel activity / Smooth Muscle Contraction / calcium channel inhibitor activity / RHO GTPases activate IQGAPs / cellular response to interferon-beta / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / Protein methylation / eNOS activation / monoatomic ion transport / Activation of AMPK downstream of NMDARs / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / positive regulation of protein dephosphorylation / Ion homeostasis / regulation of calcium-mediated signaling / regulation of ryanodine-sensitive calcium-release channel activity / titin binding / positive regulation of protein autophosphorylation / potassium ion transmembrane transport / voltage-gated potassium channel complex / sperm midpiece / proton transmembrane transport / T-tubule / calcium channel complex / cellular response to epinephrine stimulus / substantia nigra development / response to muscle stretch
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 / EF-hand domain pair / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site ...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 / EF-hand domain pair / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / EF-hand domain / EF-hand domain pair
Similarity search - Domain/homology
Calmodulin-1 / Sodium/hydrogen exchanger 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodSOLUTION NMR / simulated annealing
AuthorsPrestel, A. / Kragelund, B.B. / Pedersen, E.S. / Pedersen, S.F. / Sjoegaard-Frich, L.M.
Funding support Denmark, 2items
OrganizationGrant numberCountry
Danish National Research Foundation4181-00344 Denmark
Novo Nordisk FoundationSYNERGY Denmark
CitationJournal: Elife / Year: 2021
Title: Dynamic Na + /H + exchanger 1 (NHE1) - calmodulin complexes of varying stoichiometry and structure regulate Ca 2+ -dependent NHE1 activation.
Authors: Sjogaard-Frich, L.M. / Prestel, A. / Pedersen, E.S. / Severin, M. / Kristensen, K.K. / Olsen, J.G. / Kragelund, B.B. / Pedersen, S.F.
History
DepositionJun 8, 2020Deposition site: PDBE / Processing site: PDBE
Revision 1.0Mar 17, 2021Provider: repository / Type: Initial release
Revision 1.1Apr 14, 2021Group: Database references / Category: citation / citation_author / Item: _citation.title / _citation_author.identifier_ORCID
Revision 1.2May 15, 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: Calmodulin-1
B: Sodium/hydrogen exchanger 1
C: Sodium/hydrogen exchanger 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)25,6927
Polymers25,5313
Non-polymers1604
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: isothermal titration calorimetry
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area3150 Å2
ΔGint-29 kcal/mol
Surface area16290 Å2
MethodPISA
NMR ensembles
DataCriteria
Number of conformers (submitted / calculated)20 / 100structures with the lowest energy
RepresentativeModel #1lowest energy

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Components

#1: Protein Calmodulin-1


Mass: 16721.350 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CALM1, CALM, CAM, CAM1 / Plasmid: pET5 / Production host: Escherichia coli BL21 (bacteria) / Variant (production host): codonPlus (DE3)-RP / References: UniProt: P0DP23
#2: Protein/peptide Sodium/hydrogen exchanger 1 / APNH / Na(+)/H(+) antiporter / amiloride-sensitive / Na(+)/H(+) exchanger 1 / NHE-1 / Solute ...APNH / Na(+)/H(+) antiporter / amiloride-sensitive / Na(+)/H(+) exchanger 1 / NHE-1 / Solute carrier family 9 member 1


Mass: 4405.055 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SLC9A1, APNH1, NHE1 / Production host: Escherichia coli BL21 (bacteria) / Variant (production host): Rosetta2 pLysS / References: UniProt: P19634
#3: Chemical
ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Ca
Has ligand of interestN

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Experimental details

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Experiment

ExperimentMethod: SOLUTION NMR
NMR experiment
Conditions-IDExperiment-IDSolution-IDSample stateSpectrometer-IDType
111isotropic13D 1H-13C NOESY aliphatic
121isotropic13D 1H-13C NOESY aromatic
131isotropic13D 1H-15N NOESY
141isotropic13D 1H-15N NOESY 12C/14N filtered
151isotropic13D 1H-13C NOESY 12C/14N filtered
193isotropic13D 1H-13C NOESY
183isotropic13D 1H-15N NOESY
173isotropic13D 1H-13C NOESY 12C/14N filtered
163isotropic13D 1H-15N NOESY 12C/14N filtered
1101isotropic13D HNCO
1201isotropic13D HN(CA)CB
1191isotropic13D HN(CA)CO
1181isotropic13D C(CO)NH
1171isotropic13D (H)CCH-TOCSY
1161isotropic13D HBHA(CO)NH
1153isotropic13D (H)CCH-TOCSY
1143isotropic13D HBHA(CO)NH
1133isotropic13D HNCO
1123isotropic13D HN(CA)CB
1113isotropic13D CBCA(CO)NH
1213isotropic13D HN(CA)CO
1221isotropic12D 1H-13C HSQC
1231isotropic12D 1H-15N HSQC
1243isotropic12D 1H-13C HSQC
1253isotropic12D 1H-15N HSQC

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Sample preparation

Details
TypeSolution-IDContentsLabelSolvent system
solution10.5 mM [U-99% 13C; U-99% 15N] Calmodulin, 1.15 mM Sodium/Hydrogen exchanger 1 (NHE1, SLC9A1), 95% H2O/5% D2OD95% H2O/5% D2O
solution31 mM [U-99% 13C; U-99% 15N] Sodium/Hydrogen exchanger 1 (NHE1, SLC9A1), 0.5 mM Calmodulin, 95% H2O/5% D2OE95% H2O/5% D2O
Sample
Conc. (mg/ml)ComponentIsotopic labelingSolution-ID
0.5 mMCalmodulin[U-99% 13C; U-99% 15N]1
1.15 mMSodium/Hydrogen exchanger 1 (NHE1, SLC9A1)natural abundance1
1 mMSodium/Hydrogen exchanger 1 (NHE1, SLC9A1)[U-99% 13C; U-99% 15N]3
0.5 mMCalmodulinnatural abundance3
Sample conditionsIonic strength: 120 mM / Ionic strength err: 10 / Label: NMR / pH: 7.5 / PH err: 0.2 / Pressure: 1 atm / Pressure err: 0.01 / Temperature: 310 K / Temperature err: 0.2

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NMR measurement

NMR spectrometer
TypeManufacturerModelField strength (MHz)Spectrometer-ID
Bruker AVANCE IIIBrukerAVANCE III6001
Bruker AVANCE IIIBrukerAVANCE III7502

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Processing

NMR software
NameVersionDeveloperClassification
X-PLOR NIH2.44Schwieters, Kuszewski, Tjandra and Clorerefinement
CYANA3.98.5Guntert, Mumenthaler and Wuthrichstructure calculation
CcpNmr Analysis2.4.2CCPNchemical shift assignment
CcpNmr Analysis2.4.2CCPNpeak picking
NMRPipeDelaglio, Grzesiek, Vuister, Zhu, Pfeifer and Baxprocessing
TopSpin3.5Bruker Biospinprocessing
qMDDKazimierczuk, Orekhovprocessing
TALOSCornilescu, Delaglio and Baxdata analysis
RefinementMethod: simulated annealing / 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

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