8r5n

Structural highlights

Function

DTX1_HUMAN Functions as a ubiquitin ligase protein in vivo, mediating ubiquitination and promoting degradation of MEKK1, suggesting that it may regulate the Notch pathway via some ubiquitin ligase activity (By similarity). Regulator of Notch signaling, a signaling pathway involved in cell-cell communications that regulates a broad spectrum of cell-fate determinations. Mainly acts as a positive regulator of Notch, but it also acts as a negative regulator, depending on the developmental and cell context. Mediates the antineural activity of Notch, possibly by inhibiting the transcriptional activation mediated by MATCH1. Involved in neurogenesis, lymphogenesis and myogenesis, and may also be involved in MZB (Marginal zone B) cell differentiation. Promotes B-cell development at the expense of T-cell development, suggesting that it can antagonize NOTCH1.^{[1] [2] [3]}

References

1. ↑ Yamamoto N, Yamamoto S, Inagaki F, Kawaichi M, Fukamizu A, Kishi N, Matsuno K, Nakamura K, Weinmaster G, Okano H, Nakafuku M. Role of Deltex-1 as a transcriptional regulator downstream of the Notch receptor. J Biol Chem. 2001 Nov 30;276(48):45031-40. Epub 2001 Sep 19. PMID:11564735 doi:http://dx.doi.org/10.1074/jbc.M105245200
2. ↑ Izon DJ, Aster JC, He Y, Weng A, Karnell FG, Patriub V, Xu L, Bakkour S, Rodriguez C, Allman D, Pear WS. Deltex1 redirects lymphoid progenitors to the B cell lineage by antagonizing Notch1. Immunity. 2002 Feb;16(2):231-43. PMID:11869684
3. ↑ Matsuno K, Eastman D, Mitsiades T, Quinn AM, Carcanciu ML, Ordentlich P, Kadesch T, Artavanis-Tsakonas S. Human deltex is a conserved regulator of Notch signalling. Nat Genet. 1998 May;19(1):74-8. PMID:9590294 doi:http://dx.doi.org/10.1038/ng0598-74