- Catalog number
- A08240-3
- Size / count
- 100 µg/Vial
- Dry ice
- No
- Hazardous
- No
- Discontinued
- No
- Background
- Splicing factor 3B subunit 3 is a protein that in humans is encoded by the SF3B3 gene. This gene encodes subunit 3 of the splicing factor 3b protein complex. Splicing factor 3b, together with splicing factor 3a and a 12S RNA unit, forms the U2 small nuclear ribonucleoproteins complex (U2 snRNP) . The splicing factor 3b/3a complex binds pre-mRNA upstream of the intron's branch site in a sequence independent manner and may anchor the U2 snRNP to the pre-mRNA. Splicing factor 3b is also a component of the minor U12-type spliceosome. Subunit 3 has also been identified as a component of the STAGA (SPT3-TAF (II) 31-GCN5L acetylase) transcription coactivator-HAT (histone acetyltransferase) complex, and the TFTC (TATA-binding-protein-free TAF (II) -containing complex) . These complexes may function in chromatin modification, transcription, splicing, and DNA repair.
- Synonyms
- Transforming growth factor beta activator LRRC32; Garpin; Glycoprotein A repetitions predominant; GARP; Leucine-rich repeat-containing protein 32; LRRC32; D11S833E
- Gene Name
- SF3B3
- Gene ID
- 23450
- UniProt
- Q15393
- Host
- Rabbit
- Reactivity
- Human, Mouse, Rat
- Cross Reactivity
- No cross-reactivity with other proteins.
- Immunogen
- E.coli-derived human SF3B3 recombinant protein (Position: R728-Q1181) .
- Clonality
- Polyclonal
- Tissue Specificity
- Heart, placenta, skeletal muscle, kidney, lung and pancreas.
- Applications
- ELISA, Flow Cytometry, IF, IHC, ICC, WB
- Field of Research
- Immune System Diseases, Immunology, Protein Trafficking, Signal Transduction, Signaling Pathway
- Purification
- Immunogen affinity purified.
- Concentration
- Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.
- Form
- Lyophilized
- Reconstitution
- Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.
- Function
- Key regulator of transforming growth factor beta (TGFB1, TGFB2 and TGFB3) that controls TGF-beta activation by maintaining it in a latent state during storage in extracellular space. Associates specifically via disulfide bonds with the Latency-associated peptide (LAP), which is the regulatory chain of TGF-beta, and regulates integrin-dependent activation of TGF-beta. Able to outcompete LTBP1 for binding to LAP regulatory chain of TGF-beta. Controls activation of TGF-beta-1 (TGFB1) on the surface of activated regulatory T-cells (Tregs) . Required for epithelial fusion during palate development by regulating activation of TGF-beta-3 (TGFB3) (By similarity) .
- References & Citations
- 1. Das, B. K., Xia, L., Palandjian, L., Gozani, O., Chyung, Y., Reed, R. Characterization of a protein complex containing spliceosomal proteins SAPs 49, 130, 145, and 155. Molec. Cell. Biol. 19: 6796-6802, 1999. 2. Metselaar, P. I., Hos, C., Welting, O., Bosch, J. A., Kraneveld, A. D., de Jonge, W. J., Te Velde, A. A. Ambiguity about splicing factor 3b subunit 3 (SF3B3) and Sin3A associated protein 130 (SAP30) . Cells 10: 590, 2021. 3. Nomura, N., Miyajima, N., Sazuka, T., Tanaka, A., Kawarabayasi, Y., Sato, S., Nagase, T., Seki, N., Ishikawa, K., Tabata, S. Prediction of the coding sequences of unidentified human genes. I. The coding sequences of 40 new genes (KIAA0001-KIAA0040) deduced by analysis of randomly samples cDNA clones from human immature myeloid cell line KG-1. DNA Res. 1: 27-35, 1994. Note: Erratum: DNA Res. 2: 210 only, 1995.
- Storage Conditions
- At -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freezing and thawing.
- Observed Molecular Weight
- 136 kDa
- Applications Notes
- 6
- Gene Name Synonym
- Leucine rich repeat containing 32
- Subcellular Location
- Cell membrane. Single-pass type I membrane protein. Cell surface.
- Isotype
- Rabbit IgG
- Contents
- Each vial contains 4 mg Trehalose, 0.9 mg NaCl, 0.2 mg Na2HPO4.