Reviewed,
UniProtKB/Swiss-Prot Q64542 (AT2B4_RAT)
Last modified
February 9, 2010.
Version 95.
History...
Clusters with 100%,
90%,
50% identity |
Documents (1) |
Third-party data |
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Names and origin
| Protein names | Recommended name: Plasma membrane calcium-transporting ATPase 4 Short name=PMCA4 EC=3.6.3.8 Alternative name(s): Plasma membrane calcium ATPase isoform 4 Plasma membrane calcium pump isoform 4 | ||
| Gene names |
| ||
| Organism | Rattus norvegicus (Rat) | ||
| Taxonomic identifier | 10116 [NCBI] | ||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Muroidea › Muridae › Murinae › Rattus |
Protein attributes
| Sequence length | 1203 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at transcript level. |
General annotation (Comments)
| Function | This magnesium-dependent enzyme catalyzes the hydrolysis of ATP coupled with the transport of calcium out of the cell. |
| Catalytic activity | ATP + H2O + Ca2+(Cis) = ADP + phosphate + Ca2+(Trans). |
| Subcellular location | |
| Tissue specificity | Ubiquitously expressed. Not detected in liver. The highest levels are found in uterus and stomach. Isoform XA is found in uterus, brain, stomach, small intestine, colon and pancreas. Isoform XB is found in uterus, skeletal muscle, lung, kidney, spleen, stomach, small intestine and pancreas. Isoform ZA is found in testis and isoform ZB is found in testis and heart. |
| Sequence similarities | Belongs to the cation transport ATPase (P-type) family. Type IIB subfamily. |
Ontologies
Alternative products
| This entry describes 4 isoforms produced by alternative splicing. [Align] [Select] Note: There is a combination of two alternatively spliced domains at N-terminal site A (X and Z) and at C-terminal site C (A and B). | ||||||
| Isoform XB (identifier: Q64542-1) Also known as: AIICI; This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform XA (identifier: Q64542-2) Also known as: AIICII; The sequence of this isoform differs from the canonical sequence as follows: 1105-1203: RVVKVFHSFR...SPLQSQETPV → EVINKFQTGA...VGNQSGQSIS | ||||||
| Isoform ZA (identifier: Q64542-3) Also known as: AICII; The sequence of this isoform differs from the canonical sequence as follows: 301-312: Missing. 1105-1203: RVVKVFHSFR...SPLQSQETPV → EVINKFQTGA...VGNQSGQSIS | ||||||
| Isoform ZB (identifier: Q64542-4) Also known as: AICI; The sequence of this isoform differs from the canonical sequence as follows: 301-312: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 1203 | 1203 | Plasma membrane calcium-transporting ATPase 4 | PRO_0000046221 | |||||
Regions | |||||||||
| Topological domain | 1 – 92 | 92 | Cytoplasmic Potential | ||||||
| Transmembrane | 93 – 113 | 21 | Potential | ||||||
| Topological domain | 114 – 150 | 37 | Extracellular Potential | ||||||
| Transmembrane | 151 – 171 | 21 | Potential | ||||||
| Topological domain | 172 – 356 | 185 | Cytoplasmic Potential | ||||||
| Transmembrane | 357 – 376 | 20 | Potential | ||||||
| Topological domain | 377 – 409 | 33 | Extracellular Potential | ||||||
| Transmembrane | 410 – 427 | 18 | Potential | ||||||
| Topological domain | 428 – 840 | 413 | Cytoplasmic Potential | ||||||
| Transmembrane | 841 – 860 | 20 | Potential | ||||||
| Topological domain | 861 – 870 | 10 | Extracellular Potential | ||||||
| Transmembrane | 871 – 891 | 21 | Potential | ||||||
| Topological domain | 892 – 911 | 20 | Cytoplasmic Potential | ||||||
| Transmembrane | 912 – 934 | 23 | Potential | ||||||
| Topological domain | 935 – 952 | 18 | Extracellular Potential | ||||||
| Transmembrane | 953 – 974 | 22 | Potential | ||||||
| Topological domain | 975 – 993 | 19 | Cytoplasmic Potential | ||||||
| Transmembrane | 994 – 1015 | 22 | Potential | ||||||
| Topological domain | 1016 – 1025 | 10 | Extracellular Potential | ||||||
| Transmembrane | 1026 – 1047 | 22 | Potential | ||||||
| Topological domain | 1048 – 1203 | 156 | Cytoplasmic Potential | ||||||
| Region | 1086 – 1103 | 18 | Calmodulin-binding subdomain A By similarity | ||||||
| Region | 1104 – 1113 | 10 | Calmodulin-binding subdomain B By similarity | ||||||
| Compositional bias | 297 – 303 | 7 | Poly-Lys | ||||||
Sites | |||||||||
| Active site | 465 | 1 | 4-aspartylphosphate intermediate By similarity | ||||||
| Metal binding | 785 | 1 | Magnesium By similarity | ||||||
| Metal binding | 789 | 1 | Magnesium By similarity | ||||||
Amino acid modifications | |||||||||
| Modified residue | 1102 | 1 | Phosphothreonine; by PKC By similarity | ||||||
Natural variations | |||||||||
| Alternative sequence | 301 – 312 | 12 | Missing in isoform ZA and isoform ZB. | VSP_000406 | |||||
| Alternative sequence | 1105 – 1203 | 99 | RVVKV…QETPV → EVINKFQTGASFKGVLRRQN LSQQLDVKLVPSSYSEAVAS VRTSPSTSSAVTPPPVGNQS GQSIS in isoform XA and isoform ZA. | VSP_000407 | |||||
Experimental info | |||||||||
| Sequence conflict | 431 | 1 | I → V in CAA53990. Ref.2 | ||||||
Sequences
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References
| [1] | "Primary structure of rat plasma membrane Ca(2+)-ATPase isoform 4 and analysis of alternative splicing patterns at splice site A." Keeton T.P., Shull G.E. Biochem. J. 306:779-785(1995) [PubMed: 7702574] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS XB; ZB; XA AND ZA). Strain: CD Charles River. Tissue: Testis. |
| [2] | "Plasma-membrane calcium-pump isoforms in human and rat liver." Howard A., Barley N.F., Legon S., Walters J.R.F. Biochem. J. 303:275-279(1994) [PubMed: 7945253] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 266-455 (ISOFORMS XA/XB). Tissue: Lung. |
| [3] | "Alternative splicing of exons encoding the calmodulin-binding domains and C termini of plasma membrane Ca(2+)-ATPase isoforms 1, 2, 3, and 4." Keeton T.P., Burk S.E., Shull G.E. J. Biol. Chem. 268:2740-2748(1993) [PubMed: 8428948] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1081-1203, ALTERNATIVE SPLICING (ISOFORMS XA/ZA). Strain: Sprague-Dawley. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | U15408 mRNA. Translation: AAA81005.1. U15408 mRNA. Translation: AAA81006.1. U15408 mRNA. Translation: AAA81007.1. U15408 mRNA. Translation: AAA81008.1. X76452 mRNA. Translation: CAA53990.1. L05569, L05566, L05567 Genomic DNA. Translation: AAA50820.1. |
| IPI | IPI00213557. IPI00230910. IPI00230911. IPI00230912. |
| PIR | G44525. S50027. S54356. S54357. |
| RefSeq | NP_001005871.1. |
| UniGene | Rn.9986 |
3D structure databases | |
| ModBase | Search... |
Protein-protein interaction databases | |
| STRING | Q64542. |
PTM databases | |
| PhosphoSite | Q64542. |
Proteomic databases | |
| PRIDE | Q64542. |
Genome annotation databases | |
| Ensembl | ENSRNOT00000004078; ENSRNOP00000004078; ENSRNOG00000003031; Rattus norvegicus. [Genome view] |
| GeneID | 29600. |
| KEGG | rno:29600. |
| UCSC | NM_001005871. rat. |
Organism-specific databases | |
| CTD | 29600. |
| RGD | 621305. Atp2b4. |
Phylogenomic databases | |
| eggNOG | maNOG04958. |
| HOVERGEN | Q64542. |
| InParanoid | Q64542. |
| PhylomeDB | Q64542. |
Enzyme and pathway databases | |
| BRENDA | 3.6.3.8. 248. |
Gene expression databases | |
| ArrayExpress | Q64542. |
| Genevestigator | Q64542. |
| GermOnline | ENSRNOG00000003031. Rattus norvegicus. |
Family and domain databases | |
| InterPro | IPR008250. ATPase_P-typ_ATPase-assoc-dom. IPR006408. ATPase_P-typ_Ca-transp_PMCA. IPR006069. ATPase_P-typ_cation-exchng_asu. IPR006068. ATPase_P-typ_cation-transptr_C. IPR004014. ATPase_P-typ_cation-transptr_N. IPR001757. ATPase_P-typ_ion-transptr. IPR018303. ATPase_P-typ_P_site. IPR005834. Dehalogen-like_hydro. [Graphical view] |
| PANTHER | PTHR11939. ATPase_P. 1 hit. |
| Pfam | PF00689. Cation_ATPase_C. 1 hit. PF00690. Cation_ATPase_N. 1 hit. PF00122. E1-E2_ATPase. 1 hit. PF00702. Hydrolase. 1 hit. [Graphical view] |
| PRINTS | PR00119. CATATPASE. PR00121. NAKATPASE. |
| SMART | SM00831. Cation_ATPase_N. 1 hit. [Graphical view] |
| TIGRFAMs | TIGR01517. ATPase-IIB_Ca. 1 hit. TIGR01494. ATPase_P-type. 4 hits. |
| PROSITE | PS00154. ATPASE_E1_E2. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Entry information
| Entry name | AT2B4_RAT | ||||||||
| Accession | Primary (citable) accession number: Q64542 Secondary accession number(s): Q63127 Q64545 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation project | HPI (Human Proteome Initiative) | ||||||||

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