GNAZ

Guanine nucleotide binding protein (G protein), alpha z polypeptide
Identifiers
Symbol	GNAZ
External IDs	OMIM: 139160 MGI: 95780 HomoloGene: 22574 GeneCards: GNAZ Gene
Gene ontology Molecular function • GTPase activity • receptor signaling protein activity • GTP binding • G-protein beta/gamma-subunit complex binding • G-protein coupled serotonin receptor binding • metal ion binding Cellular component • nuclear envelope • endoplasmic reticulum • cytosol • heterotrimeric G-protein complex • plasma membrane • extracellular exosome Biological process • G-protein coupled receptor signaling pathway • adenylate cyclase-modulating G-protein coupled receptor signaling pathway • adenylate cyclase-inhibiting G-protein coupled receptor signaling pathway • metabolic process • intracellular signal transduction Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	2781	14687
Ensembl	ENSG00000128266	ENSMUSG00000040009
UniProt	P19086	O70443
RefSeq (mRNA)	NM_002073	NM_010311
RefSeq (protein)	NP_002064	NP_034441
Location (UCSC)	Chr 22: 23.07 – 23.13 Mb	Chr 10: 74.97 – 75.02 Mb
PubMed search

Guanine nucleotide-binding protein G(z) subunit alpha is a protein that in humans is encoded by the GNAZ gene.^[1][2]

Function

The protein encoded by this gene is a member of a G protein subfamily that mediates signal transduction in pertussis toxin-insensitive systems. This encoded protein may play a role in maintaining the ionic balance of perilymphatic and endolymphatic cochlear fluids.^[2]

Interactions

GNAZ has been shown to interact with EYA2,^[3] RGS20^[4][5] and RGS19.^[3][6]

References

1. Matsuoka M, Itoh H, Kaziro Y (September 1990). "Characterization of the human gene for Gx alpha, a pertussis toxin-insensitive regulatory GTP-binding protein". J. Biol. Chem. 265 (22): 13215–20. PMID 2115889.
2. "Entrez Gene: GNAZ guanine nucleotide binding protein (G protein), alpha z polypeptide".
3. Fan X, Brass LF, Poncz M, Spitz F, Maire P, Manning DR (October 2000). "The alpha subunits of Gz and Gi interact with the eyes absent transcription cofactor Eya2, preventing its interaction with the six class of homeodomain-containing proteins". J. Biol. Chem. 275 (41): 32129–34. doi:10.1074/jbc.M004577200. PMID 10906137.
4. Nagahama M, Usui S, Shinohara T, Yamaguchi T, Tani K, Tagaya M (December 2002). "Inactivation of Galpha(z) causes disassembly of the Golgi apparatus". J. Cell. Sci. 115 (Pt 23): 4483–93. doi:10.1242/jcs.00093. PMID 12414994.
5. Glick JL, Meigs TE, Miron A, Casey PJ (October 1998). "RGSZ1, a Gz-selective regulator of G protein signaling whose action is sensitive to the phosphorylation state of Gzalpha". J. Biol. Chem. 273 (40): 26008–13. doi:10.1074/jbc.273.40.26008. PMID 9748279.
6. De Vries L, Elenko E, Hubler L, Jones TL, Farquhar MG (December 1996). "GAIP is membrane-anchored by palmitoylation and interacts with the activated (GTP-bound) form of G alpha i subunits". Proc. Natl. Acad. Sci. U.S.A. 93 (26): 15203–8. doi:10.1073/pnas.93.26.15203. PMC 26381. PMID 8986788.

Further reading

• Wilkie TM, Gilbert DJ, Olsen AS, Chen XN, Amatruda TT, Korenberg JR, Trask BJ, de Jong P, Reed RR, Simon MI (1992). "Evolution of the mammalian G protein alpha subunit multigene family". Nat. Genet. 1 (2): 85–91. doi:10.1038/ng0592-85. PMID 1302014.
• Jiang M, Pandey S, Tran VT, Fong HK (1991). "Guanine nucleotide-binding regulatory proteins in retinal pigment epithelial cells". Proc. Natl. Acad. Sci. U.S.A. 88 (9): 3907–11. doi:10.1073/pnas.88.9.3907. PMC 51562. PMID 1902575.
• Gagnon AW, Manning DR, Catani L, Gewirtz A, Poncz M, Brass LF (1991). "Identification of Gz alpha as a pertussis toxin-insensitive G protein in human platelets and megakaryocytes". Blood 78 (5): 1247–53. PMID 1908722.
• Hinton DR, Blanks JC, Fong HK, Casey PJ, Hildebrandt E, Simons MI (1990). "Novel localization of a G protein, Gz-alpha, in neurons of brain and retina". J. Neurosci. 10 (8): 2763–70. PMID 2117645.
• Mumby SM, Heukeroth RO, Gordon JI, Gilman AG (1990). "G-protein alpha-subunit expression, myristoylation, and membrane association in COS cells". Proc. Natl. Acad. Sci. U.S.A. 87 (2): 728–32. doi:10.1073/pnas.87.2.728. PMC 53339. PMID 2153964.
• Matsuoka M, Itoh H, Kozasa T, Kaziro Y (1988). "Sequence analysis of cDNA and genomic DNA for a putative pertussis toxin-insensitive guanine nucleotide-binding regulatory protein alpha subunit". Proc. Natl. Acad. Sci. U.S.A. 85 (15): 5384–8. doi:10.1073/pnas.85.15.5384. PMC 281761. PMID 2456569.
• Blatt C, Eversole-Cire P, Cohn VH, Zollman S, Fournier RE, Mohandas LT, Nesbitt M, Lugo T, Jones DT, Reed RR (1988). "Chromosomal localization of genes encoding guanine nucleotide-binding protein subunits in mouse and human". Proc. Natl. Acad. Sci. U.S.A. 85 (20): 7642–6. doi:10.1073/pnas.85.20.7642. PMC 282248. PMID 2902634.
• Fong HK, Yoshimoto KK, Eversole-Cire P, Simon MI (1988). "Identification of a GTP-binding protein alpha subunit that lacks an apparent ADP-ribosylation site for pertussis toxin". Proc. Natl. Acad. Sci. U.S.A. 85 (9): 3066–70. doi:10.1073/pnas.85.9.3066. PMC 280144. PMID 3129724.
• Fields TA, Casey PJ (1995). "Phosphorylation of Gz alpha by protein kinase C blocks interaction with the beta gamma complex". J. Biol. Chem. 270 (39): 23119–25. doi:10.1074/jbc.270.39.23119. PMID 7559455.
• Lounsbury KM, Schlegel B, Poncz M, Brass LF, Manning DR (1993). "Analysis of Gz alpha by site-directed mutagenesis. Sites and specificity of protein kinase C-dependent phosphorylation". J. Biol. Chem. 268 (5): 3494–8. PMID 8429024.
• Linder ME, Middleton P, Hepler JR, Taussig R, Gilman AG, Mumby SM (1993). "Lipid modifications of G proteins: alpha subunits are palmitoylated". Proc. Natl. Acad. Sci. U.S.A. 90 (8): 3675–9. doi:10.1073/pnas.90.8.3675. PMC 46364. PMID 8475115.
• Hunt TW, Fields TA, Casey PJ, Peralta EG (1996). "RGS10 is a selective activator of G alpha i GTPase activity". Nature 383 (6596): 175–7. doi:10.1038/383175a0. PMID 8774883.
• Magovcevic I, Khetarpal U, Bieber FR, Morton CC (1995). "GNAZ in human fetal cochlea: expression, localization, and potential role in inner ear function". Hear. Res. 90 (1-2): 55–64. doi:10.1016/0378-5955(95)00146-8. PMID 8975005.
• De Vries L, Elenko E, Hubler L, Jones TL, Farquhar MG (1996). "GAIP is membrane-anchored by palmitoylation and interacts with the activated (GTP-bound) form of G alpha i subunits". Proc. Natl. Acad. Sci. U.S.A. 93 (26): 15203–8. doi:10.1073/pnas.93.26.15203. PMC 26381. PMID 8986788.
• Ho MK, Wong YH (1997). "Functional role of amino-terminal serine16 and serine27 of G alphaZ in receptor and effector coupling". J. Neurochem. 68 (6): 2514–22. doi:10.1046/j.1471-4159.1997.68062514.x. PMID 9166747.
• Sidhu A, Kimura K, Uh M, White BH, Patel S (1998). "Multiple coupling of human D5 dopamine receptors to guanine nucleotide binding proteins Gs and Gz". J. Neurochem. 70 (6): 2459–67. doi:10.1046/j.1471-4159.1998.70062459.x. PMID 9603210.
• Lin P, Le-Niculescu H, Hofmeister R, McCaffery JM, Jin M, Hennemann H, McQuistan T, De Vries L, Farquhar MG (1998). "The mammalian calcium-binding protein, nucleobindin (CALNUC), is a Golgi resident protein". J. Cell Biol. 141 (7): 1515–27. doi:10.1083/jcb.141.7.1515. PMC 2132997. PMID 9647645.
• Glick JL, Meigs TE, Miron A, Casey PJ (1998). "RGSZ1, a Gz-selective regulator of G protein signaling whose action is sensitive to the phosphorylation state of Gzalpha". J. Biol. Chem. 273 (40): 26008–13. doi:10.1074/jbc.273.40.26008. PMID 9748279.