AKAP13

A kinase (PRKA) anchor protein 13
Available structures
PDB Ortholog search: PDBe, RCSB
Identifiers
SymbolsAKAP13 ; AKAP-13; AKAP-Lbc; ARHGEF13; BRX; HA-3; Ht31; LBC; PRKA13; PROTO-LB; PROTO-LBC; c-lbc; p47
External IDsOMIM: 604686 MGI: 2676556 HomoloGene: 4903 GeneCards: AKAP13 Gene
Orthologs
SpeciesHumanMouse
Entrez1121475547
EnsemblENSG00000170776ENSMUSG00000066406
UniProtQ12802E9PVD4
RefSeq (mRNA)NM_001270546NM_029332
RefSeq (protein)NP_001257475NP_083608
Location (UCSC)Chr 15:
85.92 – 86.29 Mb
Chr 7:
75.46 – 75.75 Mb
PubMed search

A-kinase anchor protein 13 is an enzyme that in humans is encoded by the AKAP13 gene.[1][2][3]

Function

The A-kinase anchor proteins (AKAPs) are a group of structurally diverse proteins that have the common function of binding to the regulatory subunit of protein kinase A (PKA) and confining the holoenzyme to discrete locations within the cell. This gene encodes a member of the AKAP family. Alternative splicing of this gene results in at least 3 transcript variants encoding different isoforms containing a dbl oncogene homology (DH) domain and a pleckstrin homology (PH) domain. The DH domain is associated with guanine nucleotide exchange activation for the Rho/Rac family of small GTP-binding proteins, resulting in the conversion of the inactive GTPase to the active form capable of transducing signals. The PH domain has multiple functions. Therefore, these isoforms function as scaffolding proteins to coordinate a Rho signaling pathway and, in addition, function as protein kinase A-anchoring proteins.[3]

Interactions

AKAP13 has been shown to interact with Estrogen receptor alpha,[1] CTNNAL1[4] and PRKAR2A.[5][6]

References

  1. 1.0 1.1 Rubino D, Driggers P, Arbit D, Kemp L, Miller B, Coso O et al. (Jul 1998). "Characterization of Brx, a novel Dbl family member that modulates estrogen receptor action". Oncogene 16 (19): 2513–26. doi:10.1038/sj.onc.1201783. PMID 9627117.
  2. Carr DW, Stofko-Hahn RE, Fraser ID, Bishop SM, Acott TS, Brennan RG et al. (Sep 1991). "Interaction of the regulatory subunit (RII) of cAMP-dependent protein kinase with RII-anchoring proteins occurs through an amphipathic helix binding motif". J. Biol. Chem. 266 (22): 14188–92. PMID 1860836.
  3. 3.0 3.1 "Entrez Gene: AKAP13 A kinase (PRKA) anchor protein 13".
  4. Park B, Nguyen NT, Dutt P, Merdek KD, Bashar M, Sterpetti P et al. (Nov 2002). "Association of Lbc Rho guanine nucleotide exchange factor with alpha-catenin-related protein, alpha-catulin/CTNNAL1, supports serum response factor activation". J. Biol. Chem. 277 (47): 45361–70. doi:10.1074/jbc.M202447200. PMID 12270917.
  5. Alto NM, Soderling SH, Hoshi N, Langeberg LK, Fayos R, Jennings PA et al. (Apr 2003). "Bioinformatic design of A-kinase anchoring protein-in silico: a potent and selective peptide antagonist of type II protein kinase A anchoring". Proc. Natl. Acad. Sci. U.S.A. 100 (8): 4445–50. doi:10.1073/pnas.0330734100. PMC 153575. PMID 12672969.
  6. Carr DW, Hausken ZE, Fraser ID, Stofko-Hahn RE, Scott JD (Jul 1992). "Association of the type II cAMP-dependent protein kinase with a human thyroid RII-anchoring protein. Cloning and characterization of the RII-binding domain". J. Biol. Chem. 267 (19): 13376–82. PMID 1618839.

Further reading