RCSB PDB - 4FJV: Crystal Structure of Human Otubain2 and Ubiquitin Complex (original) (raw)
The human otubain2-ubiquitin structure provides insights into the cleavage specificity of poly-ubiquitin-linkages.
[Altun, M.](/search?q=citation.rcsb%5Fauthors:Altun, M.), [Walter, T.S.](/search?q=citation.rcsb%5Fauthors:Walter, T.S.), [Kramer, H.B.](/search?q=citation.rcsb%5Fauthors:Kramer, H.B.), [Herr, P.](/search?q=citation.rcsb%5Fauthors:Herr, P.), [Iphofer, A.](/search?q=citation.rcsb%5Fauthors:Iphofer, A.), [Bostrom, J.](/search?q=citation.rcsb%5Fauthors:Bostrom, J.), [David, Y.](/search?q=citation.rcsb%5Fauthors:David, Y.), [Komsany, A.](/search?q=citation.rcsb%5Fauthors:Komsany, A.), [Ternette, N.](/search?q=citation.rcsb%5Fauthors:Ternette, N.), [Navon, A.](/search?q=citation.rcsb%5Fauthors:Navon, A.), [Stuart, D.I.](/search?q=citation.rcsb%5Fauthors:Stuart, D.I.), [Ren, J.](/search?q=citation.rcsb%5Fauthors:Ren, J.), [Kessler, B.M.](/search?q=citation.rcsb%5Fauthors:Kessler, B.M.)
(2015) PLoS One 10: e0115344-e0115344
PubMed Abstract:
Ovarian tumor domain containing proteases cleave ubiquitin (Ub) and ubiquitin-like polypeptides from proteins. Here we report the crystal structure of human otubain 2 (OTUB2) in complex with a ubiquitin-based covalent inhibitor, Ub-Br2. The ubiquitin binding mode is oriented differently to how viral otubains (vOTUs) bind ubiquitin/ISG15, and more similar to yeast and mammalian OTUs. In contrast to OTUB1 which has exclusive specificity towards Lys48 poly-ubiquitin chains, OTUB2 cleaves different poly-Ub linked chains. N-terminal tail swapping experiments between OTUB1 and OTUB2 revealed how the N-terminal structural motifs in OTUB1 contribute to modulating enzyme activity and Ub-chain selectivity, a trait not observed in OTUB2, supporting the notion that OTUB2 may affect a different spectrum of substrates in Ub-dependent pathways.
Organizational Affiliation:
Target Discovery Institute, Nuffield Department of Medicine, Roosevelt Drive, University of Oxford, Oxford, OX3 7FZ, United Kingdom; Science for Life Laboratory, Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 21 Stockholm, Sweden.