Expressed in colonic epithelial cells (at protein level). Widespread.most abundant in skeletal muscle. Isoform 6: Detected in brain. Isoform 8: Detected in brain, placenta, lung and kidney. Isoform 7: Detected in heart and skeletal muscle.
Post Translational Modifications
Long isoforms that share a conserved PKA phosphorylation site in the N-terminus are activated by PKA through phosphorylation. Isoform 3 and isoform 7 are activated by phosphorylation (in vitro), but not isoform 6. Isoform N3 and isoform 12 are phosphorylated on Ser-49, Ser-51, Ser-55 and Ser-59. Sumoylation of long isoforms by PIAS4 augments their activation by PKA phosphorylation and represses their inhibition by ERK phosphorylation.
Function
Hydrolyzes the second messenger cAMP, which is a key regulator of many important physiological processes.
Apical Cell MembraneCytoplasmMembraneCytoskeletonMicrotubule Organizing CenterCentrosomeFound In The Soluble FractionAssociated With MembranesAnd Associated With The Cytoskeleton And The CentrosomeColocalized With Shank2 To The Apical Membrane Of Colonic Crypt Cells
