[F-actin]-monooxygenase MICAL2 (MICAL2)

Nuclear monooxygenase that boosts depolymerization of F-actin by mediating oxidation of certain methionine residues on actin to form methionine-sulfoxide, leading to actin filament disassembly and preventing repolymerization (PubMed:24440334). In the absence of actin, in addition, it acts as a NADPH oxidase producing H(2)O(2) (By similarity).

Acts as a key regulator of the SRF signaling pathway elicited by nerve growth factor and serum: mediates oxidation and subsequent depolymerization of nuclear actin, resulting in increase MKL1/MRTF-A existence in the nucleus and encourage SRF:MKL1/MRTF-A-dependent gene transcription. Doesn't activate SRF:MKL1/MRTF-A through RhoA (PubMed:24440334).