Doublecortin Like Kinase 1 (DCLK1)

DCAMKL1 is a microtubule-associated kinase that can undergo autophosphorylation. DCAMKL1 also has microtubule-polymerizing activity that is independent of its protein kinase activity. The KIAA0369 cDNA encodes a 740-amino acid peptide that shares 72.3% amino acid identity with doublecortin. The protein has a doublecortin domain, a serine/proline-rich domain, and a calmodulin-dependent kinase-like domain. The authors also identified 4 splice variants of KIAA0369. All splice variants were expressed predominantly in fetal brain, with transcript sizes ranging from 8.0 to 5.0 kb. Varying expression of all isoforms was also seen in all 15 regions of adult human brain examined, with greatest expression seen in cerebral cortex, occipital pole, frontal lobe, amygdala, and hippocampus.