The protein encoded by this gene has sequence similarity with members of the WD40 repeat-containing protein family. The WD40 group is a large family of proteins, which appear to have a regulatory function. It is believed that the WD40 repeats mediate protein-protein interactions and members of the family are involved in signal transduction, RNA processing, gene regulation, vesicular trafficking, cytoskeletal assembly and may play a role in the control of cytotypic differentiation. This encoded protein is found as a subunit in corepressor SMRT (silencing mediator for retinoid and thyroid receptors) complex along with histone deacetylase 3 protein. This gene is located adjacent to the ocular albinism gene and it is thought to be involved in the pathogenesis of the ocular albinism with late-onset sensorineural deafness phenotype. Four transcript variants encoding two different isoforms have been found for this gene. This gene is highly similar to the Y chromosome TBL1Y gene. [provided by RefSeq].
Function:
F-box-like protein involved in the recruitment of the ubiquitin/19S proteasome complex to nuclear receptor-regulated transcription units. Plays an essential role in transcription activation mediated by nuclear receptors. Probably acts as integral component of corepressor complexes that mediates the recruitment of the 19S proteasome complex, leading to the subsequent proteasomal degradation of transcription repressor complexes, thereby allowing cofactor exchange.
Subunit:
Component of the N-Cor repressor complex, at least composed of NCOR1, NCOR2, HDAC3, TBL1X, TBL1R, CORO2A and GPS2. Component of a E3 ubiquitin ligase complex containing UBE2D1, SIAH1, CACYBP/SIP, SKP1, APC and TBL1X. Probably part of other corepressor complexes, that do not contain NCOR1 and NCOR2. Interacts with histones H2B, H3a and H4.
Subcellular Location:
Nucleus (Probable).
Tissue Specificity:
Ubiquitous.
Similarity:
Belongs to the WD repeat EBI family.
Contains 1 F-box-like domain.
Contains 1 LisH domain.
Contains 8 WD repeats.
SWISS:
O60907
Gene ID:
6907
Database links:
Entrez Gene: 426045 Chicken
Entrez Gene: 515972 Cow
Entrez Gene: 6907 Human
Entrez Gene: 21372 Mouse
Entrez Gene: 302711 Rat
Entrez Gene: 560294 Zebrafish
Omim: 300196 Human
SwissProt: O60907 Human
SwissProt: Q9QXE7 Mouse
Unigene: 495656 Human
Unigene: 258476 Mouse
Unigene: 107002 Rat
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Sample:
Uterus (Mouse) Lysate at 40 ug
Primary: Anti- SMAP55 (SL4219R) at 1/1000 dilution
Secondary: IRDye800CW Goat Anti-Rabbit IgG at 1/20000 dilution
Predicted band size: 63 kD
Observed band size: 63 kD
Paraformaldehyde-fixed, paraffin embedded (rat brain tissue); Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15min; Block endogenous peroxidase by 3% hydrogen peroxide for 20 minutes; Blocking buffer (normal goat serum) at 37°C for 30min; Antibody incubation with (TBL1X) Polyclonal Antibody, Unconjugated (SL4219R) at 1:400 overnight at 4°C, followed by operating according to SP Kit(Rabbit) (sp-0023) instructionsand DAB staining.
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