Human DCLK1 Antibody

DCLK1 (Doublecortin-like and CAM Kinase-like 1; also DCAMKL1) is an 80-88 kDa member of the CaMK subfamily, Ser/Thr protein kinase family of molecules. It is found in both fetal and adult tissues, and individual cells expressing DCLK1 include pancreatic stem cells, intestinal Tuft cells, migrating neurons and select tumor types. DCLK1 is anchored to microtubules, and appears to induce tubulin polymerization. It also possesses a microtubule-independent Ser/Thr kinase phosphorylation activity. Human DCKL1 is 740 amino acids (aa) in length. It contains two doublecortin domains (aa 57-143 and 186-269) plus a protein kinase domain (aa 390-647). There are at least five utilized Ser/Thr phosphorylation sites. Multiple splice variants exist. One is termed DCL, and is a 42 kDa isoform that possesses an 18 aa substitution for aa 346-740. A second is called CPG-16 and represents a 50 kDa isoform that contains a six aa substitution for aa 1-313. A third isoform is called CARP, and is a combination of the C- and N-terminal substitutions described above. A fourth isoform resembles CPG-16 with a 43 aa substitution for aa 687-740, while a fifth isoform is simply DCLK1 with the same 43 aa substitution. DCLK1 undergoes proteolysis to generate a 35 kDa N-terminus and a 50 kDa C-terminus. Over aa 61-729, human DCLK1 shares 98% aa identity with mouse DCLK1.