The modification of proteins with ubiquitin is an important cellular mechanism for targeting abnormal or short-lived proteins for degradation. Ubiquitination involves at least three classes of enzymes: ubiquitin-activating enzymes, or E1s, ubiquitin-conjugating enzymes, or E2s, and ubiquitin-protein ligases, or E3s. This gene encodes a member of the E2 ubiquitin-conjugating enzyme family. This enzyme is required for post-replicative DNA damage repair. Its protein sequence is 100% identical to the mouse, rat, and rabbit homologs, which indicates that this enzyme is highly conserved in eukaryotic evolution.
Categories
Primary Antibodies
Cellular Localization
Membrane, Nucleus
Clonality
polyclonal
Description
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. 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.
Host
Rabbit
Immunogen
ubiquitin-conjugating enzyme E2B (RAD6 homolog)
Isotype
IgG
Molecular Weight
16 kDa
Reactivity
Human, Mouse, Rat
Regulatory
RUO
Subcellular Location
Cell membrane, Membrane, Nucleus
Synonyms
E2 17kDa, HHR6B, HR6B, RAD6 homolog B, RAD6B, UBC2, UBE2B, Ubiquitin carrier protein B, Ubiquitin protein ligase B
Uniprot
P63146
Gene Id
7320
Research Area
Epigenetics, Cell Division and Proliferation, Developmental biology, Metabolism
Weight
17kDa
Form
liquid
Format
liquid
Purification
Immunogen affinity purified
Purity
>=95% as determined by SDS-PAGE
Storage
PBS with 0.02% sodium azide and 50% glycerol pH 7.3, -20°C for 12 months (Avoid repeated freeze / thaw cycles.)