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Title :   SECOND CA2+ BINDING DOMAIN OF THE NA,CA-EXCHANGER (NCX1)

Authors :   M. Hilge, G. W. Vuister, J. Aelen

Date :   03 Feb 06 (Deposition) - 18 Apr 06 (Release) - 24 Feb 09 (Revision)

Method :   SOLUTION NMR

Resolution :   NOT APPLICABLE

Chains :   NMR Structure  : A  (20x)

Keywords :   Beta-Sandwich, Greek Key, Beta-Bulge, Ca2+ Binding, Metal Transport Regulator (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   M. Hilge, J. Aelen, G. W. Vuister
Ca(2+) Regulation In The Na(+)/Ca(2+) Exchanger Involves Two Markedly Different Ca(2+) Sensors
Mol. Cell V. 22 15 2006
PubMed-ID: 16600866 | Reference-DOI: 10.1016/J.MOLCEL.2006.03.008
(for further references see the PDB file header)

Molecule 1 - SODIUM/CALCIUM EXCHANGER 1
	Chains	:	A
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21
	Expression System Plasmid	:	PET23B
	Expression System Strain	:	BL21
	Expression System Taxid	:	511693
	Expression System Vector Type	:	PLASMID
	Fragment	:	CBD2, CA2+ BINDING DOMAIN 2
	Gene	:	NCX1
	Organism Common	:	DOG
	Organism Scientific	:	CANIS LUPUS FAMILIARIS
	Organism Taxid	:	9615
	Strain	:	FAMILIARIS
	Synonym	:	NA(+)/CA(2+)-EXCHANGE PROTEIN 1


NMR Structure (20x)	:

Summary Information (see also Sequences/Alignments below)

NMR Structure (1, 2)

No.	Name	Count	Type	Full Name
1	CA	2	Ligand/Ion	CALCIUM ION

NMR Structure (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	GLU A:516 , ASP A:578 , GLU A:582 , GLU A:648	BINDING SITE FOR RESIDUE CA A 800
2	AC2	SOFTWARE	ASP A:552 , ASP A:578 , GLU A:579 , GLU A:580	BINDING SITE FOR RESIDUE CA A 850

(no "SS Bond" information available for 2FWU)

(no "Cis Peptide Bond" information available for 2FWU)

(no "SAP(SNP)/Variant" information available for 2FWU)

(no "PROSITE Motif" information available for 2FWU)

(no "Exon" information available for 2FWU)

NMR Structure

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
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Chain A from PDB  Type:PROTEIN  Length:157
 aligned with NAC1_CANLF | P23685 from UniProtKB/Swiss-Prot  Length:970

    Alignment length:192
                                   542       552       562       572       582       592       602       612       622       632       642       652       662       672       682       692       702       712       722  
           NAC1_CANLF   533 HAGIFTFEEPVTHVSESIGIMEVKVLRTSGARGNVIVPYKTIEGTARGGGEDFEDTCGELEFQNDEIVKTISVKVIDDEEYEKNKTFFLEIGEPRLVEMSEKKALLLNELGGFTITGKYLYGQPVFRKVHAREHPIPSTVITIAEEYDDKQPLTSKEEEERRIAEMGRPILGEHTKLEVIIEESYEFKSTVD 724
               SCOP domains d2fwua1 A:501-657 Sodium/calcium exchanger 1                                                                                                                                                     SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .....ee...eeeee....eeeeeee........eeeeeeee..........ee..eeeeee.......eeeeee.........eeeeeee...ee.......-------......----------------------------..............hhhhhhhhh.........eeeeee.......... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2fwu A 501 HAGIFTFEEPVTHVSESIGIMEVKVLRTSGARGNVIVPYKTIEGTARGGGEDFEDTCGELEFQNDEIVKTISVKVIDDEEYEKNKTFFLEIGEPRLVEMSEKK-------GGFTIT----------------------------EEYDDKQPLTSKEEEERRIAEMGRPILGEHTKLEVIIEESYEFKSTVD 657
                                   510       520       530       540       550       560       570       580       590       600  |      -|    |   -         -         -    |  615       625       635       645       655  
                                                                                                                                603     604  609                          610

Legend:		→ Mismatch	(orange background)
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	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

NMR Structure

Classes(

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Folds(

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Superfamilies( (-)

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Families(

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Protein Domains( (-)

)

Organisms( (-)

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Class: All beta proteins (24004)

Fold: Immunoglobulin-like beta-sandwich (7299)

Superfamily: CalX-like (13)

Family: CalX-beta domain (7)

Protein domain: Sodium/calcium exchanger 1 (3)

Dog (Canis familiaris) [TaxId: 9615] (3)

d2fwua1

A:501-657

(no "CATH Domain" information available for 2FWU)

(no "Pfam Domain" information available for 2FWU)

NMR Structure(hide GO term definitions)

Chain A (NAC1_CANLF | P23685)

molecular function
	GO:0030506	ankyrin binding	Interacting selectively and non-covalently with ankyrin, a 200 kDa cytoskeletal protein that attaches other cytoskeletal proteins to integral membrane proteins.
	GO:0015297	antiporter activity	Enables the active transport of a solute across a membrane by a mechanism whereby two or more species are transported in opposite directions in a tightly coupled process not directly linked to a form of energy other than chemiosmotic energy. The reaction is: solute A(out) + solute B(in) = solute A(in) + solute B(out).
	GO:0005509	calcium ion binding	Interacting selectively and non-covalently with calcium ions (Ca2+).
	GO:0005432	calcium:sodium antiporter activity	Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: Ca2+(in) + Na+(out) = Ca2+(out) + Na+(in).
	GO:0005516	calmodulin binding	Interacting selectively and non-covalently with calmodulin, a calcium-binding protein with many roles, both in the calcium-bound and calcium-free states.
	GO:0008092	cytoskeletal protein binding	Interacting selectively and non-covalently with any protein component of any cytoskeleton (actin, microtubule, or intermediate filament cytoskeleton).
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
biological process
	GO:1901660	calcium ion export	The directed movement of calcium ion out of a cell or organelle.
	GO:0070509	calcium ion import	The directed movement of calcium ions into a cell or organelle.
	GO:0070588	calcium ion transmembrane transport	A process in which a calcium ion is transported from one side of a membrane to the other by means of some agent such as a transporter or pore.
	GO:0006816	calcium ion transport	The directed movement of calcium (Ca) ions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
	GO:0007154	cell communication	Any process that mediates interactions between a cell and its surroundings. Encompasses interactions such as signaling or attachment between one cell and another cell, between a cell and an extracellular matrix, or between a cell and any other aspect of its environment.
	GO:0034614	cellular response to reactive oxygen species	Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a reactive oxygen species stimulus. Reactive oxygen species include singlet oxygen, superoxide, and oxygen free radicals.
	GO:0006883	cellular sodium ion homeostasis	Any process involved in the maintenance of an internal steady state of sodium ions at the level of a cell.
	GO:0006811	ion transport	The directed movement of charged atoms or small charged molecules into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
	GO:0030501	positive regulation of bone mineralization	Any process that activates or increases the frequency, rate or extent of bone mineralization.
	GO:0098735	positive regulation of the force of heart contraction	Any process that increases the force of heart muscle contraction.
	GO:0035994	response to muscle stretch	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a myofibril being extended beyond its slack length.
	GO:0071436	sodium ion export	The directed movement of sodium ions out of a cell or organelle.
	GO:0097369	sodium ion import	The directed movement of sodium ions into a cell or organelle.
	GO:0035725	sodium ion transmembrane transport	A process in which a sodium ion is transported from one side of a membrane to the other by means of some agent such as a transporter or pore.
	GO:0006814	sodium ion transport	The directed movement of sodium ions (Na+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
	GO:0055085	transmembrane transport	The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other
	GO:0006810	transport	The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
cellular component
	GO:0016021	integral component of membrane	The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0005887	integral component of plasma membrane	The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0031226	intrinsic component of plasma membrane	The component of the plasma membrane consisting of the gene products and protein complexes having either part of their peptide sequence embedded in the hydrophobic region of the membrane or some other covalently attached group such as a GPI anchor that is similarly embedded in the membrane.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	GO:0005886	plasma membrane	The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
	GO:0042383	sarcolemma	The outer membrane of a muscle cell, consisting of the plasma membrane, a covering basement membrane (about 100 nm thick and sometimes common to more than one fiber), and the associated loose network of collagen fibers.

NMR Structure
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	NAC1_CANLF \| P23685	:	2dpk 2fws 2qvk 2qvm 3gin 3us9

2fws	FIRST CA2+ BINDING DOMAIN OF THE NA,CA-EXCHANGER (NCX1)

Description

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Ligands, Modified Residues, Ions (1, 2)

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