|Detection of Human DOCK2 by Western Blot. Western blot shows lysates of Jurkat human acute T cell leukemia cell line, HeLa human cervical epithelial carcinoma cell line, and Raji human Burkitt's lymphoma cell line. PVDF Membrane was probed with 1 µg/mL of Goat Anti-Human DOCK2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5339) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF109). A specific band was detected for DOCK2 at approximately 190 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.|
DOCK2 (Dedicator of cytokinesis protein 2) is a member of the DOCK-A family, DOCK180 superfamily of proteins. Its predicted molecular weight is 210 kDa, although it may run approximately at 190 kDa in SDS-PAGE. It is found in hematopoietic cell types, and regulates the activity of the GTPases Rac-1 and -2. Human DOCK2 is 1830 amino acids (aa) in length. It contains one SH3 domain (aa 8‑69), a DHR-1 region that localizes DOCK2 to the plasma membrane (aa 420‑662), and a DHR-2 domain that binds to nucleotide-free GTPases and shows GEF activity (aa 1115‑1621). There are two isoform variants, one that shows a 38 aa substitution for Tyr1405, and a second that shows a start site at Met450 with accompanying deletions of aa 462‑494 and 630‑766, and a 22 aa substitution for aa 934‑1830. Over aa 420‑642, human DOCK2 shares 96% aa identity to mouse DOCK2.
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