Cloning and enzymatic analysis of 22 novel human ubiquitin-specific proteases.
Biochem Biophys Res Commun
; 314(1): 54-62, 2004 Jan 30.
Article
em En
| MEDLINE
| ID: mdl-14715245
ABSTRACT
We have identified and cloned 22 human cDNAs encoding novel members of the ubiquitin-specific protease (USP) family. Eighteen of the identified proteins contain all structural features characteristic of these cysteine proteinases, whereas four of them have been classified as non-peptidase homologues. Northern blot analysis demonstrated that the identified USPs are broadly and differentially distributed in human tissues, some of them being especially abundant in skeletal muscle or testis. Enzymatic studies performed with the identified USPs revealed that at least twelve of them are deubiquitylating enzymes based on their ability to cleave ubiquitin from a ubiquitin-beta-galactosidase fusion protein. These results provide additional evidence of the extreme complexity and diversity of the USP proteolytic system in human tissues and open the possibility to explore the relevance of their multiple components in the regulation of ubiquitin-mediated pathways in normal and pathological functions.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Endopeptidases
/
Alinhamento de Sequência
/
Clonagem Molecular
/
Análise de Sequência de Proteína
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Biochem Biophys Res Commun
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
Espanha