STARD8

StAR-related lipid transfer (START) domain containing 8
Identifiers
SymbolsSTARD8 ; ARHGAP38; DLC3; STARTGAP3
External IDsOMIM: 300689 MGI: 2448556 HomoloGene: 22837 GeneCards: STARD8 Gene
Orthologs
SpeciesHumanMouse
Entrez9754236920
EnsemblENSG00000130052ENSMUSG00000031216
UniProtQ92502Q8K031
RefSeq (mRNA)NM_001142503NM_199018
RefSeq (protein)NP_001135975NP_950183
Location (UCSC)Chr X:
67.87 – 67.95 Mb
Chr X:
99 – 99.07 Mb
PubMed search

StAR-related lipid transfer domain protein 8 (STARD8) also known as deleted in liver cancer 3 protein (DLC-3) is a protein that in humans is encoded by the STARD8 gene[1][2] and is a member of the DLC family.

Structure and function

The protein is 1103 amino acids long, which like other DLC proteins consists of a sterile alpha motif (SAM), RhoGAP and a StAR-related lipid-transfer (START) domains.[3]

The protein is a Rho GTPase-activating protein (GAP), a type of protein that regulates members of the Rho family of GTPases. STARD8 is characterized as activating Rho GTPases. Its expression inhibits the growth of human breast and prostate cancer cells in culture.[3]

Tissue distribution and pathology

The protein is expressed in tissues throughout the body, but is absent or reduced in many kinds of tumor cells.[3]

While there are no known disorders caused by STARD8, partial loss of the STARD8 gene occurs in cases of craniofrontonasal syndrome where the EFNB1 gene (which causes the syndrome) is completely deleted.[4][5]

References

  1. "Entrez Gene: StAR-related lipid transfer (START) domain containing 8".
  2. Nagase T, Seki N, Ishikawa K, Tanaka A, Nomura N (February 1996). "Prediction of the coding sequences of unidentified human genes. V. The coding sequences of 40 new genes (KIAA0161-KIAA0200) deduced by analysis of cDNA clones from human cell line KG-1". DNA Res. 3 (1): 17–24. doi:10.1093/dnares/3.1.17. PMID 8724849.
  3. 3.0 3.1 3.2 Durkin ME, Ullmannova V, Guan M, Popescu NC (July 2007). "Deleted in liver cancer 3 (DLC-3), a novel Rho GTPase-activating protein, is downregulated in cancer and inhibits tumor cell growth". Oncogene 26 (31): 4580–9. doi:10.1038/sj.onc.1210244. PMID 17297465.
  4. Twigg SR, Matsumoto K, Kidd AM, Goriely A, Taylor IB, Fisher RB, Hoogeboom AJ, Mathijssen IM, Lourenco MT, Morton JE, Sweeney E, Wilson LC, Brunner HG, Mulliken JB, Wall SA, Wilkie AO (June 2006). "The origin of EFNB1 mutations in craniofrontonasal syndrome: frequent somatic mosaicism and explanation of the paucity of carrier males". Am J Hum Genet 78 (6): 999–1010. doi:10.1086/504440. PMC 1474108. PMID 16685650.
  5. Wieland I, Weidner C, Ciccone R, et al. (December 2007). "Contiguous gene deletions involving EFNB1, OPHN1, PJA1 and EDA in patients with craniofrontonasal syndrome". Clin. Genet. 72 (6): 506–16. doi:10.1111/j.1399-0004.2007.00905.x. PMID 17941886.

Further reading