2kiz

Publication Abstract from PubMed

Arkadia (Rnf111), an E3 Ubiquitin (Ub) ligase, amplifies TGF-beta signaling responses by targeting for degradation of the negative regulators Smad6/7 and the SnoN/Ski transcriptional repressors when they block the TGF-beta effectors Smad2/3. The E3 ligase activity of Arkadia depends on its C-terminal RING-H2 domain that constitutes the docking site for the E2 Ub-conjugating enzyme carrying the activated Ub. We determined the nuclear magnetic resonance solution structure of Arkadia's RING-H2 domain and revealed a (beta)betabetaalpha fold, fully consistent with the expected "cross-brace" mode of Zn(II)-ligation. In addition, the interaction of the Arkadia RING-H2 domain with its E2 partner enzyme (UbcH5b) was examined through chemical shift perturbation. Proteins 2012. (c) 2012 Wiley Periodicals, Inc.

NMR-based insights into the conformational and interaction properties of Arkadia RING-H2 E3 Ub ligase.,Chasapis CT, Kandias NG, Episkopou V, Bentrop D, Spyroulias GA Proteins. 2012 May;80(5):1484-9. doi: 10.1002/prot.24048. Epub 2012 Mar 13. PMID:22411132^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.