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Anti-OSBP1 Antibody
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Application 
| WB |
|---|---|
| Primary Accession | P22059 |
| Host | Rabbit |
| Reactivity | Human, Mouse, Rat |
| Clonality | Polyclonal |
| Format | Lyophilized |
| Description | Rabbit IgG polyclonal antibody for Oxysterol-binding protein 1(OSBP) detection. Tested with WB in Human;Mouse;Rat. |
| Reconstitution | Add 0.2ml of distilled water will yield a concentration of 500ug/ml. |
| Gene ID | 5007 |
|---|---|
| Other Names | Oxysterol-binding protein 1, OSBP (HGNC:8503), OSBP1 |
| Calculated MW | 89421 Da |
| Application Details | Western blot, 0.1-0.5 µg/ml, Human, Rat, Mouse |
| Subcellular Localization | Cytoplasm. Golgi apparatus membrane; Peripheral membrane protein. When bound to oxysterols, translocates to the periphery of Golgi membranes. |
| Tissue Specificity | Widely expressed. . |
| Source | Eukaryota |
| Protein Name | Oxysterol-binding protein 1 |
| Contents | Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 0.05mg NaN3. |
| Immunogen | A synthetic peptide corresponding to a sequence in the middle region of human OSBP1(290-304aa WQKSLQYERDQRIRL), identical to the related rat and mouse sequences. |
| Purification | Immunogen affinity purified. |
| Cross Reactivity | No cross reactivity with other proteins |
| Storage | At -20˚C for one year. After r˚Constitution, at 4˚C for one month. It˚Can also be aliquotted and stored frozen at -20˚C for a longer time.Avoid repeated freezing and thawing. |
| Sequence Similarities | Belongs to the OSBP family. |
For Research Use Only. Not For Use In Diagnostic Procedures.
| Name | OSBP (HGNC:8503) |
|---|---|
| Synonyms | OSBP1 |
| Function | Lipid transporter involved in lipid countertransport between the Golgi complex and membranes of the endoplasmic reticulum: specifically exchanges sterol (cholesterol) with phosphatidylinositol 4-phosphate (PI4P, 1,2-diacyl-sn-glycero-3-phospho-(1D-myo-inositol 4- phosphate)), delivering sterol to the Golgi in exchange for PI4P, which is subsequently degraded by the SAC1/SACM1L phosphatase in the endoplasmic reticulum (PubMed:24209621, PubMed:28978670). Binds cholesterol and a range of oxysterols including 25-hydroxycholesterol (PubMed:15746430, PubMed:17428193). Cholesterol binding promotes the formation of a complex with PP2A and a tyrosine phosphatase which dephosphorylates ERK1/2, whereas 25-hydroxycholesterol causes its disassembly (PubMed:15746430). Regulates cholesterol efflux by decreasing the stability of the relatively short lived ABCA1 protein (an important point of control for cholesterol efflux activity) (PubMed:18450749). |
| Cellular Location | Cytoplasm, cytosol. Cytoplasm, perinuclear region. Golgi apparatus membrane; Peripheral membrane protein. Endoplasmic reticulum membrane; Peripheral membrane protein Golgi apparatus, trans-Golgi network Note=Predominantly cytosolic. |
| Tissue Location | Widely expressed.. |
Provided below are standard protocols that you may find useful for product applications.
BACKGROUND
OSBP(Oxysterol-Binding Protein), also called OSBP1, is a protein that in humans is encoded by the OSBP gene. Im et al.(2005) reported the structure of the full-length yeast oxysterol-binding-protein Osh4, a member of the OSBP-related protein(ORP) family, at 1.5- to 1.9-angstrom resolution in complexes with ergosterol, cholesterol, and 7-, 20- and 25-hydroxy cholesterol. Moreira et al.(2001) refined the localization of the OSBP1 gene to chromosome 11q12.1 by radiation hybrid analysis. Wang et al.(2005) found that OSBP functions as a cholesterol-binding scaffolding protein coordinating the activity of 2 phosphatases to control the extracellular signal-regulated kinase(ERK) signaling pathway. Cytosolic OSBP formed an approximately 440-kD oligomer with a member of the PTPPBS family of tyrosine phosphatases, the serine/threonine phosphatase PP2A, and cholesterol.
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