CYTH3

Cytohesin 3
PDB rendering based on 1bc9.
Available structures PDB Ortholog search: PDBe, RCSB List of PDB id codes 4KAX​
Identifiers
Symbols	CYTH3 ; ARNO3; GRP1; PSCD3
External IDs	OMIM: 605081 MGI: 1335107 HomoloGene: 3116 GeneCards: CYTH3 Gene
Gene ontology Molecular function • ARF guanyl-nucleotide exchange factor activity • protein binding • phosphatidylinositol-3,4,5-trisphosphate binding Cellular component • ruffle • trans-Golgi network • cytosol • plasma membrane • extrinsic component of cytoplasmic side of plasma membrane Biological process • regulation of cell adhesion • regulation of ARF protein signal transduction • positive regulation of GTPase activity • positive regulation of cell adhesion • Golgi vesicle transport • establishment of epithelial cell polarity Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	9265	19159
Ensembl	ENSG00000008256	ENSMUSG00000018001
UniProt	O43739	O08967
RefSeq (mRNA)	NM_004227	NM_001163548
RefSeq (protein)	NP_004218	NP_001157020
Location (UCSC)	Chr 7: 6.16 – 6.27 Mb	Chr 5: 143.62 – 143.71 Mb
PubMed search

Cytohesin-3 is a protein that in humans is encoded by the CYTH3 gene.^[1][2]

This gene encodes a member of the cytohesin (CYTH) family, formerly known as the PSCD (pleckstrin homology, Sec7 and coiled-coil domains) family. Cytohesin family members have identical structural organization that consists of an N-terminal coiled-coil motif, a central Sec7 domain, and a C-terminal pleckstrin homology (PH) domain. The coiled-coil motif is involved in homodimerization, the Sec7 domain contains guanine-nucleotide exchange protein (GEP) activity, and the PH domain interacts with phospholipids and is responsible for association of CYTHs with membranes. Members of this family appear to mediate the regulation of protein sorting and membrane trafficking. This encoded protein is involved in the control of Golgi structure and function, and it may have a physiological role in regulating ADP-ribosylation factor protein 6 (ARF) functions, in addition to acting on ARF1.^[2]

References

1. Klarlund JK, Guilherme A, Holik JJ, Virbasius JV, Chawla A, Czech MP (Apr 1997). "Signaling by phosphoinositide-3,4,5-trisphosphate through proteins containing pleckstrin and Sec7 homology domains". Science 275 (5308): 1927–30. doi:10.1126/science.275.5308.1927. PMID 9072969.
2. "Entrez Gene: PSCD3 pleckstrin homology, Sec7 and coiled-coil domains 3".

Further reading

• Franco M, Boretto J, Robineau S, et al. (1998). "ARNO3, a Sec7-domain guanine nucleotide exchange factor for ADP ribosylation factor 1, is involved in the control of Golgi structure and function". Proc. Natl. Acad. Sci. U.S.A. 95 (17): 9926–31. doi:10.1073/pnas.95.17.9926. PMC 21438. PMID 9707577.
• Venkateswarlu K, Gunn-Moore F, Oatey PB, et al. (1998). "Nerve growth factor- and epidermal growth factor-stimulated translocation of the ADP-ribosylation factor-exchange factor GRP1 to the plasma membrane of PC12 cells requires activation of phosphatidylinositol 3-kinase and the GRP1 pleckstrin homology domain". Biochem. J. 335 ( Pt 1) (Pt 1): 139–46. PMC 1219762. PMID 9742223.
• Ogasawara M, Kim SC, Adamik R, et al. (2000). "Similarities in function and gene structure of cytohesin-4 and cytohesin-1, guanine nucleotide-exchange proteins for ADP-ribosylation factors". J. Biol. Chem. 275 (5): 3221–30. doi:10.1074/jbc.275.5.3221. PMID 10652308.
• Nevrivy DJ, Peterson VJ, Avram D, et al. (2000). "Interaction of GRASP, a protein encoded by a novel retinoic acid-induced gene, with members of the cytohesin family of guanine nucleotide exchange factors". J. Biol. Chem. 275 (22): 16827–36. doi:10.1074/jbc.275.22.16827. PMID 10828067.
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Scherer SW, Cheung J, MacDonald JR, et al. (2003). "Human Chromosome 7: DNA Sequence and Biology". Science 300 (5620): 767–72. doi:10.1126/science.1083423. PMC 2882961. PMID 12690205.
• Hillier LW, Fulton RS, Fulton LA, et al. (2003). "The DNA sequence of human chromosome 7". Nature 424 (6945): 157–64. doi:10.1038/nature01782. PMID 12853948.
• Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
• Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The Status, Quality, and Expansion of the NIH Full-Length cDNA Project: The Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
• Poirier MB, Hamann G, Domingue ME, et al. (2005). "General receptor for phosphoinositides 1, a novel repressor of thyroid hormone receptor action that prevents deoxyribonucleic acid binding". Mol. Endocrinol. 19 (8): 1991–2005. doi:10.1210/me.2004-0449. PMID 15878955.
• Rual JF, Venkatesan K, Hao T, et al. (2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature 437 (7062): 1173–8. doi:10.1038/nature04209. PMID 16189514.