Available structures
PDBOrtholog search: PDBe RCSB
AliasesGNA13, G13, G protein subunit alpha 13, HG1N
External IDsOMIM: 604406 MGI: 95768 HomoloGene: 55976 GeneCards: GNA13
RefSeq (mRNA)



RefSeq (protein)



Location (UCSC)Chr 17: 65.01 – 65.06 MbChr 11: 109.25 – 109.29 Mb
PubMed search[3][4]
View/Edit HumanView/Edit Mouse

Guanine nucleotide-binding protein subunit alpha-13 is a protein that in humans is encoded by the GNA13 gene.[5][6]

Interactions and functions

The GNA13 gene encodes the G13 G protein alpha subunit. Together with GNA12, these two proteins comprise one of the four classes of heterotrimeric G protein alpha subunits.[7] Heterotrimeric G proteins function in transducing hormone and neurotransmitter signals detected by cell surface G protein-coupled receptors to intracellular signaling pathways to modulate cell functions. G protein alpha subunits bind to guanine nucleotides and function in a regulatory cycle, and are active when bound to GTP but inactive and associated with the G beta-gamma complex when bound to GDP.[8][9]

Active GTP-bound G12 alpha subunit interacts with and activates ARHGEF1,[10][11][12] ARHGEF11,[13][14] and ARHGEF12.[15][16] These ARHGEF proteins function as guanine nucleotide exchange factors for the Rho small GTPases to regulate the actin cytoskeleton.[17]

GNA13 has been shown to interact with AKAP3,[18] RIC8A,[19][20] and Radixin.[21]

Clinical significance

Recurrent mutations in this gene have been associated to cases of diffuse large B-cell lymphoma.[22][23]

See also


  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000120063 - Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000020611 - Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ Kabouridis PS, Waters ST, Escobar S, Stanners J, Tsoukas CD (Mar 1995). "Expression of GTP-binding protein alpha subunits in human thymocytes". Molecular and Cellular Biochemistry. 144 (1): 45–51. doi:10.1007/BF00926739. PMID 7791744. S2CID 8911988.
  6. ^ "Entrez Gene: GNA13 guanine nucleotide binding protein (G protein), alpha 13".
  7. ^ Strathmann MP, Simon MI (1991). "G alpha 12 and G alpha 13 subunits define a fourth class of G protein alpha subunits". Proc. Natl. Acad. Sci. U.S.A. 88 (13): 5582–6. Bibcode:1991PNAS...88.5582S. doi:10.1073/pnas.88.13.5582. PMC 51921. PMID 1905812.
  8. ^ Gilman, AG (1987). "G proteins: transducers of receptor-generated signals". Annual Review of Biochemistry. 56: 615–649. doi:10.1146/ PMID 3113327.
  9. ^ Rodbell, M (1995). "Nobel Lecture: Signal transduction: Evolution of an idea". Bioscience Reports. 15 (3): 117–133. doi:10.1007/bf01207453. PMC 1519115. PMID 7579038. S2CID 11025853.
  10. ^ Johnson EN, Seasholtz TM, Waheed AA, Kreutz B, Suzuki N, Kozasa T, Jones TL, Brown JH, Druey KM (Dec 2003). "RGS16 inhibits signalling through the G alpha 13-Rho axis". Nature Cell Biology. 5 (12): 1095–103. doi:10.1038/ncb1065. PMID 14634662. S2CID 6798899.
  11. ^ Bhattacharyya R, Wedegaertner PB (Apr 2003). "Mutation of an N-terminal acidic-rich region of p115-RhoGEF dissociates alpha13 binding and alpha13-promoted plasma membrane recruitment". FEBS Letters. 540 (1–3): 211–6. doi:10.1016/s0014-5793(03)00267-9. PMID 12681510. S2CID 84132104.
  12. ^ Hart MJ, Jiang X, Kozasa T, Roscoe W, Singer WD, Gilman AG, Sternweis PC, Bollag G (Jun 1998). "Direct stimulation of the guanine nucleotide exchange activity of p115 RhoGEF by Galpha13". Science. 280 (5372): 2112–4. doi:10.1126/science.280.5372.2112. PMID 9641916.
  13. ^ Fukuhara, S; Murga, C; Zohar, M; Igishi, T; Gutkind, JS (1999-02-26). "A novel PDZ domain containing guanine nucleotide exchange factor links heterotrimeric G proteins to Rho". Journal of Biological Chemistry. 274 (9): 5868–5879. doi:10.1074/jbc.274.9.5868. PMID 10026210.
  14. ^ Rümenapp, U; Blomquist, A; Schwörer, G; Schablowski, H; Psoma, A; Jakobs, KH (1999-10-15). "Rho-specific binding and guanine nucleotide exchange catalysis by KIAA0380, a dbl family member". FEBS Letters. 459 (3): 313–318. doi:10.1016/s0014-5793(99)01270-3. PMID 10526156. S2CID 8529412.
  15. ^ Fukuhara S, Chikumi H, Gutkind JS (November 2000). "Leukemia-associated Rho guanine nucleotide exchange factor (LARG) links heterotrimeric G proteins of the G(12) family to Rho". FEBS Letters. 485 (2–3): 183–8. doi:10.1016/S0014-5793(00)02224-9. PMID 11094164. S2CID 7300556.
  16. ^ Suzuki N, Nakamura S, Mano H, Kozasa T (January 2003). "Galpha 12 activates Rho GTPase through tyrosine-phosphorylated leukemia-associated RhoGEF". Proceedings of the National Academy of Sciences of the United States of America. 100 (2): 733–8. Bibcode:2003PNAS..100..733S. doi:10.1073/pnas.0234057100. PMC 141065. PMID 12515866.
  17. ^ Dhanasekaran N, Dermott JM (1996). "Signaling by the G12 class of G proteins". Cell. Signal. 8 (4): 235–45. doi:10.1016/0898-6568(96)00048-4. PMID 8842523.
  18. ^ Niu J, Vaiskunaite R, Suzuki N, Kozasa T, Carr DW, Dulin N, Voyno-Yasenetskaya TA (Oct 2001). "Interaction of heterotrimeric G13 protein with an A-kinase-anchoring protein 110 (AKAP110) mediates cAMP-independent PKA activation". Current Biology. 11 (21): 1686–90. doi:10.1016/s0960-9822(01)00530-9. PMID 11696326. S2CID 19027128.
  19. ^ Tall GG, Krumins AM, Gilman AG (Mar 2003). "Mammalian Ric-8A (synembryn) is a heterotrimeric Galpha protein guanine nucleotide exchange factor". The Journal of Biological Chemistry. 278 (10): 8356–62. doi:10.1074/jbc.M211862200. PMID 12509430.
  20. ^ Wang L, Guo D, Xing B, Zhang JJ, Shu HB, Guo L, Huang XY (September 2011). "Resistance to inhibitors of cholinesterase-8A (Ric-8A) is critical for growth factor receptor-induced actin cytoskeletal reorganization". The Journal of Biological Chemistry. 286 (35): 31055–61. doi:10.1074/jbc.M111.253427. PMC 3162464. PMID 21771786.
  21. ^ Vaiskunaite R, Adarichev V, Furthmayr H, Kozasa T, Gudkov A, Voyno-Yasenetskaya TA (Aug 2000). "Conformational activation of radixin by G13 protein alpha subunit". The Journal of Biological Chemistry. 275 (34): 26206–12. doi:10.1074/jbc.M001863200. PMID 10816569.
  22. ^ Morin RD, Mendez-Lago M, Mungall AJ, Goya R, Mungall KL, Corbett RD, Johnson NA, Severson TM, Chiu R, Field M, Jackman S, Krzywinski M, Scott DW, Trinh DL, Tamura-Wells J, Li S, Firme MR, Rogic S, Griffith M, Chan S, Yakovenko O, Meyer IM, Zhao EY, Smailus D, Moksa M, Chittaranjan S, Rimsza L, Brooks-Wilson A, Spinelli JJ, Ben-Neriah S, Meissner B, Woolcock B, Boyle M, McDonald H, Tam A, Zhao Y, Delaney A, Zeng T, Tse K, Butterfield Y, Birol I, Holt R, Schein J, Horsman DE, Moore R, Jones SJ, Connors JM, Hirst M, Gascoyne RD, Marra MA (Aug 2011). "Frequent mutation of histone-modifying genes in non-Hodgkin lymphoma". Nature. 476 (7360): 298–303. Bibcode:2011Natur.476..298M. doi:10.1038/nature10351. PMC 3210554. PMID 21796119.
  23. ^ Lohr JG, Stojanov P, Lawrence MS, Auclair D, Chapuy B, Sougnez C, Cruz-Gordillo P, Knoechel B, Asmann YW, Slager SL, Novak AJ, Dogan A, Ansell SM, Link BK, Zou L, Gould J, Saksena G, Stransky N, Rangel-Escareño C, Fernandez-Lopez JC, Hidalgo-Miranda A, Melendez-Zajgla J, Hernández-Lemus E, Schwarz-Cruz y Celis A, Imaz-Rosshandler I, Ojesina AI, Jung J, Pedamallu CS, Lander ES, Habermann TM, Cerhan JR, Shipp MA, Getz G, Golub TR (Mar 2012). "Discovery and prioritization of somatic mutations in diffuse large B-cell lymphoma (DLBCL) by whole-exome sequencing". Proceedings of the National Academy of Sciences of the United States of America. 109 (10): 3879–84. Bibcode:2012PNAS..109.3879L. doi:10.1073/pnas.1121343109. PMC 3309757. PMID 22343534.

Further reading

This article incorporates text from the United States National Library of Medicine, which is in the public domain.