Abstract:
:X-linked inhibitor of apoptosis protein (XIAP), a leading member of the family of inhibitor of apoptosis (IAP) proteins, is considered as the most potent and versatile inhibitor of caspases and apoptosis. It has been reported that XIAP is frequently overexpressed in cancer and its expression level is implicated in contributing to tumorigenesis, disease progression, chemoresistance and poor patient-survival. Therefore, XIAP is one of the leading targets in drug development for cancer therapy. Recently, based on bioinformatics study, a previously unrecognized but evolutionarily conserved ubiquitin-associated (UBA) domain in IAPs was identified. The UBA domain is found to be essential for the oncogenic potential of IAP, to maintain endothelial cell survival and to protect cells from TNF-alpha-induced apoptosis. Moreover, the UBA domain is required for XIAP to activate NF-kappaB. In the present study, we report the near complete resonance assignments of the UBA domain-containing region of human XIAP protein. Secondary structure prediction based on chemical shift index (CSI) analysis reveals that the protein is predominately alpha-helical, which is consistent with the structures of known UBA proteins.
journal_name
Biomol NMR Assignjournal_title
Biomolecular NMR assignmentsauthors
Hui SK,Tse MK,Yang Y,Wong BC,Sze KHdoi
10.1007/s12104-009-9197-xsubject
Has Abstractpub_date
2010-04-01 00:00:00pages
13-5issue
1eissn
1874-2718issn
1874-270Xjournal_volume
4pub_type
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