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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

A novel ubiquitin carboxyl terminal hydrolase is involved in toad oocyte maturation.

p28, a 28kD protein from toad (Bufo bufo gargarizans) oocytes, was identified by using p13(suc1)-agarose affinity chromatography. Sequence homology analysis of the full-length cDNA of p28 (Gene Bank accession number: AF 314091) indicated that it encodes a protein containing 224 amino-acids with about 55% identities and more than 70% positives to human, rat or mouse UCH-L1, and contains homological functional domains of UCH family. Anti-p28 monoclonal antibody, on injecting into the oocytes, could inhibit the progesterone-induced resumption of meiotic division in a dose-dependent manner. The recombinant protein p28 showed similar SDS/PAGE behaviors to the native one, and promoted ubiquitin ethyl ester hydrolysis, a classical catalytic reaction for ubiquitin carboxyl terminal hydrolases (UCHs). The results in this paper reveal that a novel protein, p28, exists in the toad oocytes, is a UCH L1 homolog, was engaged in the process of progesterone-induced oocyte maturation possibly through an involvement in protein turnover and degradation.[1]

References

  1. A novel ubiquitin carboxyl terminal hydrolase is involved in toad oocyte maturation. Sun, Z.G., Kong, W.H., Zhang, Y.J., Yan, S., Lu, J.N., Gu, Z., Lin, F., Tso, J.K. Cell Res. (2002) [Pubmed]
 
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