E2 ubiquitin-conjugating enzyme B ; RAD6 homolog B ; HR6B ; Ubiquitin carrier protein B ; Ubiquitin-conjugating enzyme E2(14k) ; Ubiquitin-protein ligase B ; Rad6b
Categories
Elisa
Function
Accepts ubiquitin from the E1 complex and catalyzes its covalent attachment to other proteins. In association with the E3 enzyme BRE1 (RNF20 and/or RNF40), it plays a role in transcription regulation by catalyzing the monoubiquitination of histone H2B at 'Lys-120' to form H2BK120ub1. H2BK120ub1 gives a specific tag for epigenetic transcriptional activation, elongation by RNA polymerase II, telomeric silencing, and is also a prerequisite for H3K4me and H3K79me formation (By similarity). In vitro catalyzes 'Lys-11'-, as well as 'Lys-48'- and 'Lys-63'-linked polyubiquitination. Required for postreplication repair of UV-damaged DNA. Associates to the E3 ligase RAD18 to form the UBE2B-RAD18 ubiquitin ligase complex involved in mono-ubiquitination of DNA-associated PCNA on 'Lys-164'. May be involved in neurite outgrowth.
Specificity
Natural and recombinant Rat Ubiquitin-conjugating enzyme E2 B
Subcellular Location
Cell membrane Nucleus In peripheral neurons, expressed both at the plasma membrane and in nuclei.
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3.
"Isolation of a ubiquitin-conjugating enzyme gene induced following cerebral ischemia from the rat brain using modified subtractive hybridization and differential screening." Chen D., Graham S.H., Jing K., Simon R.P., Chen J. Submitted (1999-04) to the EMBL/GenBank/DDBJ databases
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