AKAP8 Antibody from MyBioSource.com

Description: AKAP8 Anchoring protein that mediates the subcellular compartmentation of cAMP-dependent protein kinase (PKA type II). Belongs to the AKAP95 family. Binds to dimeric RII-alpha regulatory subunit of PKA during mitosis. Interacts (via C-terminus) with FIGN.
Function: Anchoring protein that mediates the subcellular compartmentation of cAMP-dependent protein kinase (PKA type II) (PubMed:9473338). Acts as an anchor for a PKA-signaling complex onto mitotic chromosomes, which is required for maintenance of chromosomes in a condensed form throughout mitosis. Recruits condensin complex subunit NCAPD2 to chromosomes required for chromatin condensation; the function appears to be independent from PKA-anchoring (PubMed:10601332, PubMed:10791967, PubMed:11964380). May help to deliver cyclin D/E to CDK4 to facilitate cell cycle progression (PubMed:14641107). Required for cell cycle G2/M transition and histone deacetylation during mitosis. In mitotic cells recruits HDAC3 to the vicinity of chromatin leading to deacetylation and subsequent phosphorylation at 'Ser-10' of histone H3; in this function may act redundantly with AKAP8L (PubMed:16980585). Involved in nuclear retention of RPS6KA1 upon ERK activation thus inducing cell proliferation (PubMed:22130794). May be involved in regulation of DNA replication by acting as scaffold for MCM2 (PubMed:12740381). Enhances HMT activity of the KMT2 family MLL4/WBP7 complex and is involved in transcriptional regulation. In a teratocarcinoma cell line is involved in retinoic acid-mediated induction of developmental genes implicating H3 'Lys-4' methylation (PubMed:23995757). May be involved in recruitment of active CASP3 to the nucleus in apoptotic cells (PubMed:16227597). May act as a carrier protein of GJA1 for its transport to the nucleus (PubMed:26880274). Seems to involved in modulation of rDNA transcription. Preferentially binds GC-rich DNA in vitro and associates to GC-rich ribosomal RNA promoters (PubMed:26683827). Involved in modulation of Toll-like receptor signaling. Required for the cAMP-dependent suppression of TNF-alpha in early stages of LPS-induced macrophage activation; the function probably implicates targeting of PKA to NFKB1 (By similarity).
Subunit Structure: Binds to the PKA RII-alpha regulatory subunit PRKAR2A (phosphorylated at 'Thr-54') during mitosis (PubMed:9473338, PubMed:10601332, PubMed:10764601, PubMed:11591814). Interacts (via C-terminus) with FIGN (By similarity). Interacts with NCAPD2, CCND1, MCM2, RPS6KA1, PDE4A (PubMed:10601332, PubMed:11964380, PubMed:11591814, PubMed:12740381, PubMed:14641107, PubMed:15470020, PubMed:22130794). Interacts with CCND3, CCNE1, DDX5, CASP3. Interacts with NFKB1; detetcted in the cytoplasm. Interacts with MYCBP; MYCBP is translocated to the nucleus and the interaction prevents the association of the PKA catalytic subunit leading to suppression of PKA activity (By similarity). Interacts with DPY30; mediating AKAP8 association with at least the MLL4/WBP7 HMT complex (PubMed:23995757). Interacts with HDAC3; increased during mitosis (PubMed:16980585). Interacts with GJA1; in the nucleus and in the nuclear membrane; the nuclear association increases with progress of cell cycle G1, S and G2 phase and decreases in M phase (PubMed:26880274).
Post-translational Modifications: Phosphorylated on tyrosine residues probably by SRC subfamily protein kinases; multiple phosphorylation is leading to dissociation from nuclear structures implicated in chromatin structural changes.
Similarity: Belongs to the AKAP95 family