Rabbit Polyclonal ORP-3 antibody. Suitable for IHC-P, WB, ICC/IF and reacts with Human samples. Immunogen corresponding to Recombinant Fragment Protein within Human OSBPL3 aa 300-450.
pH: 7.2
Preservative: 0.02% Sodium azide
Constituents: PBS, 40% Glycerol (glycerin, glycerine)
IHC-P | WB | ICC/IF | |
---|---|---|---|
Human | Tested | Tested | Tested |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/50.00000 - 1/200.00000 | Notes Perform heat-mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol. |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 0.04000-0.40000 µg/mL | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 0.25000-2.00000 µg/mL | Notes Fixation/Permeabilization: PFA/Triton X-100. |
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Phosphoinositide-binding protein which associates with both cell and endoplasmic reticulum (ER) membranes (PubMed:16143324). Can bind to the ER membrane protein VAPA and recruit VAPA to plasma membrane sites, thus linking these intracellular compartments (PubMed:25447204). The ORP3-VAPA complex stimulates RRAS signaling which in turn attenuates integrin beta-1 (ITGB1) activation at the cell surface (PubMed:18270267, PubMed:25447204). With VAPA, may regulate ER morphology (PubMed:16143324). Has a role in regulation of the actin cytoskeleton, cell polarity and cell adhesion (PubMed:18270267). Binds to phosphoinositides with preference for PI(3,4)P2 and PI(3,4,5)P3 (PubMed:16143324). Also binds 25-hydroxycholesterol and cholesterol (PubMed:17428193).
KIAA0704, ORP3, OSBP3, OSBPL3, Oxysterol-binding protein-related protein 3, ORP-3, OSBP-related protein 3
Rabbit Polyclonal ORP-3 antibody. Suitable for IHC-P, WB, ICC/IF and reacts with Human samples. Immunogen corresponding to Recombinant Fragment Protein within Human OSBPL3 aa 300-450.
pH: 7.2
Preservative: 0.02% Sodium azide
Constituents: PBS, 40% Glycerol (glycerin, glycerine)
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ORP-3 also known as Oxysterol-binding protein-related protein 3 is a member of the oxysterol-binding protein family. It has a mass of approximately 100 kDa and is broadly expressed in a variety of tissues including the liver and spleen. ORP-3 contains a pleckstrin homology domain and an oxysterol-binding domain enabling its interactions with lipids and membranes. These structural aspects allow ORP-3 to have a role in lipid transport and cellular signaling.
The protein contributes significantly to the regulation of lipid metabolism and cellular homeostasis. It is part of a complex that modulates lipid transport and signaling pathways affecting cellular growth and proliferation. ORP-3's interaction with phosphoinositides is particularly important for maintaining membrane integrity and function. These activities can influence cell movement and positioning which have implications in cellular responses to external stimuli.
The protein interacts with several key pathways including the phosphoinositide signaling pathway and the sterol regulatory element-binding protein (SREBP) pathway. In the phosphoinositide pathway ORP-3 interacts with proteins like phosphatidylinositol 4-phosphate to facilitate lipid transport processes. In the SREBP pathway it indirectly influences cholesterol and fatty acid metabolism. These pathways position ORP-3 as an integral component in lipid homeostasis and signaling networks.
Disruptions in ORP-3 function link to lipid-related diseases such as atherosclerosis and certain cancers. In atherosclerosis ORP-3 contributes to cholesterol metabolism potentially affecting plaque formation. Its role in cancers involves its impact on cell proliferation and migration with connections to proteins such as Akt involved in cellular survival pathways. Understanding these associations helps in targeting ORP-3 for therapeutic interventions in these conditions.
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This species and application combination has not been tested, but we predict it will work based on strong homology. However, this combination is not covered by our product promise.
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All lanes: Western blot - Anti-ORP-3 antibody (ab224212) at 1/250 dilution
All lanes: A431 (human epidermoid carcinoma cell line) cell lysate
Developed using the ECL technique.
Predicted band size: 101 kDa
Paraffin-embedded human urinary bladder tissue stained for ORP-3 using ab224212 at 1/50 dilution in immunohistochemical analysis.
PFA-fixed, Triton X-100 permeabilized A431 (human epidermoid carcinoma cell line) cells stained for ORP-3 (green) using ab224212 at 4 μg/ml in ICC/IF.
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