Abstract
Several highly conserved p62 homologs have recently been isolated, e.g. the rat atypical protein kinase C-interacting protein (ZIP), the murine A170/signal transduction and adapter protein, and the human p62, a protein that binds the Src homology 2 domain of p56(lck). These proteins share striking similarity in amino acid sequence and structural motifs, thereby suggesting conserved functional properties. ZIP/p62 has been shown to play an important role as a scaffold leading to the activation of the transcription factor nuclear factor kappaB. In addition, a nuclear form of p62 has been characterized that can serve as a transcriptional co-activator. Moreover, p62 is capable of binding ubiquitin (Ub) non-covalently through its Ub-associated domain. In this review, we will focus on the structure and function of ZIP/p62.
Publication types
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Research Support, U.S. Gov't, P.H.S.
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Review
MeSH terms
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Adaptor Proteins, Signal Transducing*
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Amino Acid Sequence
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Animals
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Carrier Proteins / chemistry*
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Carrier Proteins / isolation & purification
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Carrier Proteins / metabolism*
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Heat-Shock Proteins / metabolism
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Humans
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Immediate-Early Proteins / chemistry*
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Immediate-Early Proteins / isolation & purification
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Immediate-Early Proteins / metabolism*
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Mice
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Molecular Sequence Data
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NF-kappa B / metabolism
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Proteins*
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Sequestosome-1 Protein
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Transcription Factor TFIIH
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Transcription Factors*
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Ubiquitin / metabolism
Substances
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Adaptor Proteins, Signal Transducing
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Carrier Proteins
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Gtf2h1 protein, mouse
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Heat-Shock Proteins
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Immediate-Early Proteins
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NF-kappa B
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Proteins
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SQSTM1 protein, human
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Sequestosome-1 Protein
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Sqstm1 protein, mouse
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Sqstm1 protein, rat
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Transcription Factors
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Ubiquitin
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Transcription Factor TFIIH