|Application ||WB, IHC-P, E|
|Calculated MW||22920 Da|
|Antigen Region||160-191 aa|
|Other Names||Guanylyl cyclase-activating protein 1, GCAP 1, Guanylate cyclase activator 1A, GUCA1A, C6orf131, GCAP, GCAP1, GUCA1|
|Target/Specificity||This GCAP1 antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide between 160-191 amino acids from the C-terminal region of human GCAP1.|
|Format||Purified polyclonal antibody supplied in PBS with 0.09% (W/V) sodium azide. This antibody is prepared by Saturated Ammonium Sulfate (SAS) precipitation followed by dialysis against PBS.|
|Storage||Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.|
|Precautions||GCAP1 Antibody (C-term) is for research use only and not for use in diagnostic or therapeutic procedures.|
|Synonyms||C6orf131, GCAP, GCAP1, GUCA1|
|Function||Stimulates guanylyl cyclase 1 (GC1) when free calcium ions concentration is low and inhibits GC1 when free calcium ions concentration is elevated. This Ca(2+)-sensitive regulation of GC is a key event in recovery of the dark state of rod photoreceptors following light exposure.|
|Cellular Location||Membrane; Lipid-anchor.|
|Tissue Location||Retina; cone outer and inner segments, in particular, in disk membrane regions, and to a lesser extent rod inner and outer segments|
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Provided below are standard protocols that you may find useful for product applications.
Guanylate cyclase-activating protein is a l Ca(2+)-binding protein that upregulates synthesis of cGMP in photoreceptors. The known mammalian GCAPs are more than 90% similar, consisting of 201 to 205 amino acids, and containing 3 identically conserved Ca(2+)-binding sites. The GUCA1A gene, also termed GCAP1, is transcribed into a single 1.7-kb mRNA species detectable only in the retina. In a 4-generation British family with typical clinical features of autosomal dominant cone dystrophy a tyr99-to-cys mutation) in the GUCA1A gene has been identified. Another family with a pro50-to-leu mutation in GUCA1A demonstrated phenotypic variability ranging from mild photophobia to rod-cone dystrophy. The mutant protein could activate guanylate cyclase 1 (GUCY2D) and displayed similar calcium sensitivity to wildtype protein. However, there was a marked increase in the susceptibility to protease degradation and a reduction in the thermal stability of the pro50-to-leu mutation, which may depress cellular concentration and thereby contribute to retinal cell mortality.
Pennesi, M.E., et al., Proc. Natl. Acad. Sci. U.S.A. 100(11):6783-6788 (2003).
Payne, A.M., et al., Hum. Mol. Genet. 7(2):273-277 (1998).
Subbaraya, I., et al., J. Biol. Chem. 269(49):31080-31089 (1994).
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