NCBI and Uniprot Product Information
NCBI Description
Members of arrestin/beta-arrestin protein family are thought to participate in agonist-mediated desensitization of G-protein-coupled receptors and cause specific dampening of cellular responses to stimuli such as hormones, neurotransmitters, or sensory signals. S-arrestin, also known as S-antigen, is a major soluble photoreceptor protein that is involved in desensitization of the photoactivated transduction cascade. It is expressed in the retina and the pineal gland and inhibits coupling of rhodopsin to transducin in vitro. Additionally, S-arrestin is highly antigenic, and is capable of inducing experimental autoimmune uveoretinitis. Mutations in this gene have been associated with Oguchi disease, a rare autosomal recessive form of night blindness. [provided by RefSeq, Jul 2008]
Uniprot Description
SAG: Arrestin is one of the major proteins of the ros (retinal rod outer segments); it binds to photoactivated- phosphorylated rhodopsin, thereby apparently preventing the transducin-mediated activation of phosphodiesterase. Retina and pineal gland. Belongs to the arrestin family.
Protein type: Motility/polarity/chemotaxis; G protein regulator, misc.
Chromosomal Location of Human Ortholog: 2q37.1
Cellular Component: photoreceptor inner segment; photoreceptor outer segment; cytosol
Molecular Function: opsin binding; phosphoprotein binding; protein phosphatase inhibitor activity
Biological Process: rhodopsin mediated signaling; phototransduction, visible light; cell surface receptor linked signal transduction; regulation of rhodopsin mediated signaling; visual perception; negative regulation of catalytic activity
Disease: Retinitis Pigmentosa 47; Oguchi Disease 1
Research Articles on SAG
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Product Notes
The Human SAG sag (Catalog #AAA725031) is an ELISA Kit and is intended for research purposes only. The product is available for immediate purchase. The AAA725031 ELISA Kit recognizes Human SAG. It is sometimes possible for the material contained within the vial of "S Antigen, ELISA Kit" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
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