1wha

Structural highlights

Disease

[LAP4_HUMAN] Defects in SCRIB are a cause of neural tube defects (NTD) [MIM:182940]. NTD are congenital malformations of the central nervous system and adjacent structures related to defective neural tube closure during the first trimester of pregnancy. Failure of neural tube closure can occur at any level of the embryonic axis. Common NTD forms include anencephaly, myelomeningocele and spina bifida, which result from the failure of fusion in the cranial and spinal region of the neural tube. NTDs have a multifactorial etiology encompassing both genetic and environmental components.^[1]

Function

[LAP4_HUMAN] Scaffold protein involved in different aspects of polarized cells differentiation regulating epithelial and neuronal morphogenesis. Most probably functions in the establishment of apico-basal cell polarity. May function in cell proliferation regulating progression from G1 to S phase and as a positive regulator of apoptosis for instance during acinar morphogenesis of the mammary epithelium. May also function in cell migration and adhesion and hence regulate cell invasion through MAPK signaling. May play a role in exocytosis and in the targeting synaptic vesicles to synapses. Functions as an activator of Rac GTPase activity.^{[2] [3] [4] [5] [6] [7] [8]}

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

References

1. ↑ Robinson A, Escuin S, Doudney K, Vekemans M, Stevenson RE, Greene ND, Copp AJ, Stanier P. Mutations in the planar cell polarity genes CELSR1 and SCRIB are associated with the severe neural tube defect craniorachischisis. Hum Mutat. 2012 Feb;33(2):440-7. doi: 10.1002/humu.21662. Epub 2011 Dec 20. PMID:22095531 doi:10.1002/humu.21662
2. ↑ Audebert S, Navarro C, Nourry C, Chasserot-Golaz S, Lecine P, Bellaiche Y, Dupont JL, Premont RT, Sempere C, Strub JM, Van Dorsselaer A, Vitale N, Borg JP. Mammalian Scribble forms a tight complex with the betaPIX exchange factor. Curr Biol. 2004 Jun 8;14(11):987-95. PMID:15182672 doi:10.1016/j.cub.2004.05.051
3. ↑ Lahuna O, Quellari M, Achard C, Nola S, Meduri G, Navarro C, Vitale N, Borg JP, Misrahi M. Thyrotropin receptor trafficking relies on the hScrib-betaPIX-GIT1-ARF6 pathway. EMBO J. 2005 Apr 6;24(7):1364-74. Epub 2005 Mar 17. PMID:15775968 doi:10.1038/sj.emboj.7600616
4. ↑ Qin Y, Capaldo C, Gumbiner BM, Macara IG. The mammalian Scribble polarity protein regulates epithelial cell adhesion and migration through E-cadherin. J Cell Biol. 2005 Dec 19;171(6):1061-71. Epub 2005 Dec 12. PMID:16344308 doi:10.1083/jcb.200506094
5. ↑ Nagasaka K, Nakagawa S, Yano T, Takizawa S, Matsumoto Y, Tsuruga T, Nakagawa K, Minaguchi T, Oda K, Hiraike-Wada O, Ooishi H, Yasugi T, Taketani Y. Human homolog of Drosophila tumor suppressor Scribble negatively regulates cell-cycle progression from G1 to S phase by localizing at the basolateral membrane in epithelial cells. Cancer Sci. 2006 Nov;97(11):1217-25. Epub 2006 Sep 5. PMID:16965391 doi:10.1111/j.1349-7006.2006.00315.x
6. ↑ Zhan L, Rosenberg A, Bergami KC, Yu M, Xuan Z, Jaffe AB, Allred C, Muthuswamy SK. Deregulation of scribble promotes mammary tumorigenesis and reveals a role for cell polarity in carcinoma. Cell. 2008 Nov 28;135(5):865-78. doi: 10.1016/j.cell.2008.09.045. PMID:19041750 doi:10.1016/j.cell.2008.09.045
7. ↑ Nola S, Sebbagh M, Marchetto S, Osmani N, Nourry C, Audebert S, Navarro C, Rachel R, Montcouquiol M, Sans N, Etienne-Manneville S, Borg JP, Santoni MJ. Scrib regulates PAK activity during the cell migration process. Hum Mol Genet. 2008 Nov 15;17(22):3552-65. doi: 10.1093/hmg/ddn248. Epub 2008 Aug, 20. PMID:18716323 doi:10.1093/hmg/ddn248
8. ↑ Dow LE, Elsum IA, King CL, Kinross KM, Richardson HE, Humbert PO. Loss of human Scribble cooperates with H-Ras to promote cell invasion through deregulation of MAPK signalling. Oncogene. 2008 Oct 9;27(46):5988-6001. doi: 10.1038/onc.2008.219. Epub 2008 Jul, 21. PMID:18641685 doi:10.1038/onc.2008.219