ADCY2

ADCY2
Identifiers
Aliases	ADCY2, AC2, HBAC2, adenylate cyclase 2 (brain), adenylate cyclase 2
External IDs	OMIM: 103071 MGI: 99676 HomoloGene: 75133 GeneCards: ADCY2
Gene location (Human) Chr. Chromosome 5 (human)[1] Band 5p15.31 Start 7,396,138 bp[1] End 7,830,081 bp[1]
Gene location (Mouse) Chr. Chromosome 13 (mouse)[2] Band 13 B3|13 35.55 cM Start 68,768,162 bp[2] End 69,147,660 bp[2]
RNA expression pattern Bgee Top expressed in Brodmann area 23 Achilles tendon middle temporal gyrus muscle of leg gastrocnemius muscle superior frontal gyrus More reference expression data BioGPS More reference expression data
Gene ontology Molecular function nucleotide binding manganese ion binding adenylate cyclase binding metal ion binding lyase activity protein heterodimerization activity phosphorus-oxygen lyase activity ATP binding magnesium ion binding guanylate cyclase activity adenylate cyclase activity Cellular component cytoplasm integral component of membrane membrane plasma membrane integral component of plasma membrane intracellular anatomical structure dendrite membrane raft guanylate cyclase complex, soluble Biological process GO:0007243 intracellular signal transduction cellular response to forskolin adenylate cyclase-modulating G protein-coupled receptor signaling pathway cellular response to glucagon stimulus cyclic nucleotide biosynthetic process renal water homeostasis cAMP biosynthetic process cGMP biosynthetic process signal transduction adenylate cyclase-activating G protein-coupled receptor signaling pathway adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway cAMP-mediated signaling G protein-coupled receptor signaling pathway activation of adenylate cyclase activity activation of protein kinase A activity Sources:Amigo / QuickGO
Orthologs
Species	Human	Mouse
Entrez	108	210044
Ensembl	ENSG00000078295	ENSMUSG00000021536
UniProt	Q08462	Q80TL1 Q3V1Q3
RefSeq (mRNA)	NM_020546	NM_153534
RefSeq (protein)	NP_065433	NP_705762
Location (UCSC)	Chr 5: 7.4 – 7.83 Mb	Chr 13: 68.77 – 69.15 Mb
PubMed search	[3]	[4]
Wikidata
View/Edit Human View/Edit Mouse

Adenylyl cyclase type 2 is an enzyme typically expressed in the brain of humans, that is encoded by the ADCY2 gene.^[5][6] It belongs to the adenylyl cyclase class-3 or guanylyl cyclase family because it contains two guanylate cyclase domains.^[7] ADCY2 is one of ten different mammalian isoforms of adenylyl cyclases. ADCY2 can be found on chromosome 5 and the "MIR2113-POU3F2" region of chromosome 6, with a length of 1091 amino-acids. An essential cofactor for ADCY2 is magnesium; two ions bind per subunit.^[7]

Structure[]

Structurally, ADCY2 are transmembrane proteins with twelve transmembrane segments. The protein is organized with six transmembrane segments followed by the C1 cytoplasmic domain. Then another six membrane segments, and then a second cytoplasmic domain called C2. The important parts for function are the N-terminus and the C1 and C2 regions. The C1a and C2a subdomains are homologous and form an intramolecular 'dimer' that forms the active site.

This structure displays significant homology with human brain adenylyl cyclase 1(HBA C1 or ADCY1) in the highly conserved adenylyl cyclases domain found in the 3’ cytoplasmic domain of all mammalian adenylyl cyclases. Outside this domain homology is not similar suggesting that this corresponding mRNA originates from a different gene. In situ hybridization confirms a heterogeneous population of adenylyl cyclase mRNAs is expressed in the brain.^[8]

Function[]

This gene encodes a member of the family of adenylyl cyclases, which are membrane-associated enzymes that catalyze the formation of the secondary messenger cyclic adenosine monophosphate (cAMP) from ATP. ADCY2 has also been found to accelerate phosphor-acidification, along with glycogen synthesis and breakdown.^[9] This enzyme is insensitive to Ca²⁺/calmodulin, and is stimulated by the G protein beta and gamma subunit complex.^[6] Therefore, ADCY2 is highly regulated by G-proteins, calcium, calmodulin, pyrophosphate, and post-translational modifications.

Recently, it has been discover that ADCY2 can activated by a Raf kinase-mediated serine phosphorylation.^[10] In aggregate, Raf kinase associates with adenylyl cyclases and is isoform-selective, which includes adenylyl cyclase type 2. In human embryonic kidney cells, ADCY2 is stimulated by activation of Gq-coupled muscarinic receptors through protein kinase C (PKC) to generate localized cAMP. Once the agonist binding to the Gq-coupled muscarinic receptor, A-kinase-anchoring protein (AKAP) recruits PKC to activate ADCY2 to produce cAMP. The cAMP formed is degraded by phosphodiesterase 4 (PDE4) activated by an AKAP-anchored protein kinase A.^[11]

Clinical significance[]

Polymorphisms of the ADCY2 gene have been associated with COPD and lung function.^[12]

Perturbations in adenylyl cyclase activity have been implicated in alcohol and opioid addiction and is associated with human diseases, including thyroid adenoma, Anthrax, precocious puberty in males and chondrodysplasia punctata diseases.^[13] During these diseases, ADCY2 undergoes a super-related pathway where protein kinase A (PKA) activation occurs in glucagon signaling and IP3 signaling. This enzyme may play a role in bipolar disorder along with other brain-expressed genes including , , SCN7A, and .^[14]

Interactive pathway map[]

Click on genes, proteins and metabolites below to link to respective articles.^{[§ 1]}

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|alt=Nicotine Activity on Dopaminergic Neurons edit]]

Nicotine Activity on Dopaminergic Neurons edit

1. ^ The interactive pathway map can be edited at WikiPathways: "NicotineDopaminergic_WP1602".

Model organisms[]

Model organisms have been used in the study of ADCY2 function. A conditional knockout mouse line called Adcy2^{tm1a(KOMP)Wtsi} was generated at the Wellcome Trust Sanger Institute.^[15] Male and female animals underwent a standardized phenotypic screen^[16] to determine the effects of deletion.^{[17][18][19][20]} Additional screens performed: - In-depth immunological phenotyping^[21] - in-depth bone and cartilage phenotyping^[22]

References[]

External links[]

• Human ADCY2 genome location and ADCY2 gene details page in the UCSC Genome Browser.

Further reading[]