GUCA1B

Last updated
GUCA1B
Identifiers
Aliases GUCA1B , GCAP2, GUCA2, RP48, guanylate cyclase activator 1B, GCAP 2
External IDs OMIM: 602275 MGI: 1194489 HomoloGene: 1586 GeneCards: GUCA1B
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_002098

NM_146079

RefSeq (protein)

NP_002089

NP_666191

Location (UCSC) Chr 6: 42.18 – 42.19 Mb Chr 17: 47.7 – 47.7 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Guanylyl cyclase-activating protein 2 is an enzyme that in humans is encoded by the GUCA1B gene. [5] [6] Alternative names: [7]

Contents

Biological Role

Guanylyl cyclase-activating protein 2 is proposed to play a role in dark adaptation. [8] Under scotopic conditions, calcium ions bind to three putative EF-hand calcium binding motifs which reduces the protein's ability to stimulate guanylyl cyclase. [8] This contributes to the maintained responsiveness of rod photoreceptors through hyperpolarizing them during sustained darkness.

Related Research Articles

<span class="mw-page-title-main">Guanylate cyclase</span> Lyase enzyme that synthesizes cGMP from GTP

Guanylate cyclase is a lyase enzyme that converts guanosine triphosphate (GTP) to cyclic guanosine monophosphate (cGMP) and pyrophosphate:

<span class="mw-page-title-main">Guanylate cyclase 2C</span>

Guanylate cyclase 2C, also known as guanylyl cyclase C (GC-C), intestinal guanylate cyclase, guanylate cyclase-C receptor, or the heat-stable enterotoxin receptor (hSTAR) is an enzyme that in humans is encoded by the GUCY2C gene.

<span class="mw-page-title-main">Guanylin</span>

Guanylin is a 15 amino acid peptide that is secreted by goblet cells in the colon. Guanylin acts as an agonist of the guanylyl cyclase receptor GC-C and regulates electrolyte and water transport in intestinal and renal epithelia. Upon receptor binding, guanylin increases the intracellular concentration of cGMP, induces chloride secretion and decreases intestinal fluid absorption, ultimately causing diarrhoea. The peptide stimulates the enzyme through the same receptor binding region as the heat-stable enterotoxins.

Rhodopsin kinase is a serine/threonine-specific protein kinase involved in phototransduction. This enzyme catalyses the following chemical reaction:

<span class="mw-page-title-main">GUCY2D</span> Protein-coding gene in the species Homo sapiens

Retinal guanylyl cyclase 1 also known as guanylate cyclase 2D, retinal is an enzyme that in humans is encoded by the GUCY2D gene.

<span class="mw-page-title-main">NPR1</span> Protein-coding gene in the species Homo sapiens

Natriuretic peptide receptor A/guanylate cyclase A , also known as NPR1, is an atrial natriuretic peptide receptor. In humans it is encoded by the NPR1 gene.

<span class="mw-page-title-main">Bestrophin 1</span> Protein-coding gene in the species Homo sapiens

Bestrophin-1 (Best1) is a protein that, in humans, is encoded by the BEST1 gene.

<span class="mw-page-title-main">RPE65</span> Protein-coding gene in humans

Retinal pigment epithelium-specific 65 kDa protein, also known as retinoid isomerohydrolase, is an enzyme of the vertebrate visual cycle that is encoded in humans by the RPE65 gene. RPE65 is expressed in the retinal pigment epithelium and is responsible for the conversion of all-trans-retinyl esters to 11-cis-retinol during phototransduction. 11-cis-retinol is then used in visual pigment regeneration in photoreceptor cells. RPE65 belongs to the carotenoid oxygenase family of enzymes.

<span class="mw-page-title-main">PDE6B</span> Protein-coding gene in the species Homo sapiens

Rod cGMP-specific 3',5'-cyclic phosphodiesterase subunit beta is the beta subunit of the protein complex PDE6 that is encoded by the PDE6B gene. PDE6 is crucial in transmission and amplification of visual signal. The existence of this beta subunit is essential for normal PDE6 functioning. Mutations in this subunit are responsible for retinal degeneration such as retinitis pigmentosa or congenital stationary night blindness.

<span class="mw-page-title-main">GUCA1A</span> Protein-coding gene in the species Homo sapiens

Guanylyl cyclase-activating protein 1 is an enzyme that in humans is encoded by the GUCA1A gene.

<span class="mw-page-title-main">GUCY1B3</span> Protein-coding gene in the species Homo sapiens

Guanylate cyclase soluble subunit beta-1 is an enzyme that in humans is encoded by the GUCY1B3 gene.

<span class="mw-page-title-main">RDH12</span> Protein-coding gene in the species Homo sapiens

Retinol dehydrogenase 12 is an enzyme that in humans is encoded by the RDH12 gene.

<span class="mw-page-title-main">GUCY1A3</span> Protein-coding gene in the species Homo sapiens

Guanylate cyclase soluble subunit alpha-3 is an enzyme that in humans is encoded by the GUCY1A3 gene.

<span class="mw-page-title-main">RDH14</span> Protein-coding gene in the species Homo sapiens

Retinol dehydrogenase 14 is an enzyme that in humans is encoded by the RDH14 gene.

<span class="mw-page-title-main">RGS9</span> Protein-coding gene in the species Homo sapiens

Regulator of G-protein signalling 9, also known as RGS9, is a human gene, which codes for a protein involved in regulation of signal transduction inside cells. Members of the RGS family, such as RGS9, are signaling proteins that suppress the activity of G proteins by promoting their deactivation.[supplied by OMIM]

<span class="mw-page-title-main">DHRS3</span> Protein-coding gene in the species Homo sapiens

Short-chain dehydrogenase/reductase 3 is an enzyme that in humans is encoded by the DHRS3 gene.

<span class="mw-page-title-main">GUCY1A2</span> Protein-coding gene in the species Homo sapiens

Guanylate cyclase soluble subunit alpha-2 is an enzyme that in humans is encoded by the GUCY1A2 gene.

<span class="mw-page-title-main">KCNV2</span> Protein-coding gene in the species Homo sapiens

Potassium voltage-gated channel subfamily V member 2 is a protein that in humans is encoded by the KCNV2 gene. The protein encoded by this gene is a voltage-gated potassium channel subunit.

<span class="mw-page-title-main">GUCY2F</span> Protein-coding gene in humans

Retinal guanylyl cyclase 2 also known as guanylate cyclase F (GUCY2F) is a protein that in humans is encoded by the GUCY2F gene.

<span class="mw-page-title-main">Guanylate cyclase activator 2B</span> Protein-coding gene in the species Homo sapiens

Guanylate cyclase activator 2B is a protein that in humans is encoded by the GUCA2B gene.

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000112599 - Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000023979 - Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Surguchov A, Bronson JD, Banerjee P, Knowles JA, Ruiz C, Subbaraya I, et al. (February 1997). "The human GCAP1 and GCAP2 genes are arranged in a tail-to-tail array on the short arm of chromosome 6 (p21.1)". Genomics. 39 (3): 312–22. doi: 10.1006/geno.1996.4513 . PMID   9119368.
  6. "Entrez Gene: GUCA1B guanylate cyclase activator 1B (retina)".
  7. "GUCA1B - Guanylyl cyclase-activating protein 2 - Bos taurus (Bovine) - GUCA1B gene & protein". www.uniprot.org. Retrieved 2017-10-09.
  8. 1 2 Gorczyca WA, Gray-Keller MP, Detwiler PB, Palczewski K (April 1994). "Purification and physiological evaluation of a guanylate cyclase activating protein from retinal rods". Proceedings of the National Academy of Sciences of the United States of America. 91 (9): 4014–8. Bibcode:1994PNAS...91.4014G. doi: 10.1073/pnas.91.9.4014 . PMC   43713 . PMID   7909609.

Further reading