Source:http://linkedlifedata.com/resource/umls/id/C1514990
NCI: The A-kinase anchor protein 13 (AKAP13, also known as AKAP-LBC) is one of 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. AKAP13 is a splice variant of the oncogene Lbc. Alternative splicing of the AKAP13 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. These splice variants contain a fragment that was originally identified as Ht31 (See Carr et al 1991) which acts as a scaffolding protein to regulate the Rho signaling pathway and as protein kinase A-anchoring protein creating a co