Biochemical characterization of distinct regions of SPEC molecules and their role in phagocytosis.

Abstract excerpt

Cdc42 signaling pathways play important roles in immune cell polarization and cytoskeletal changes. Although the small Cdc42-binding proteins SPEC1 and SPEC2 play a role in F-actin accumulation in activated T lymphocytes, little is known about their precise activities in other cell types. Here, we mapped the Cdc42-binding activity of SPEC1 to the CRIB sequence and a downstream alpha helical region. Biochemical...

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