The A-kinase anchor proteins (AKAPs) are a group of structurally diverse proteins, which have the common function of binding to the regulatory subunit of protein kinase A (PKA) and confining the holoenzyme to discrete locations within the cell. This gene encodes a member of the AKAP family. Alternative splicing of this gene results in at least 3 transcript variants encoding different isoforms containing a dbl oncogene homology (DH) domain and a pleckstrin homology (PH) domain. The DH domain is associated with guanine nucleotide exchange activation for the Rho/Rac family of small GTP binding proteins, resulting in the conversion of the inactive GTPase to the active form capable of transducing signals. The PH domain has multiple functions. Therefore, these isoforms function as scaffolding proteins to coordinate a Rho signaling pathway and, in addition, function as protein kinase A-anchoring proteins.
AKAP13; A kinase (PRKA) anchor protein 13; LBC, lymphoid blast crisis oncogene; A-kinase anchor protein 13; AKAP Lbc; ARHGEF13; BRX; c lbc; HA 3; Ht31; PROTO LB; p47; AKAP-13; LBC oncogene; A-kinase anchoring protein; lymphoid blast crisis oncogene; huma; human thyroid-anchoring protein 31; protein kinase A-anchoring protein 13; guanine nucleotide exchange factor Lbc; non-oncogenic Rho GTPase-specific GTP exchange factor; breast cancer nuclear receptor-binding auxiliary protein; LBC; HA-3; c-lbc; PRKA13; AKAP-Lbc; PROTO-LB; PROTO-LBC; FLJ11952; FLJ43341