forkhead associated (FHA) domain found in Mycobacterium tuberculosis transcriptional regulatory protein EmbR and similar proteins
EmbR is a transcriptional regulator of the embCAB operon encoding cell wall arabinosyltransferases (EmbC, -A, and -B), and is phosphorylated by the cognate mycobacterial serine/threonine protein kinase PknH. It interacts with RNA polymerase and possesses a phosphorylation-dependent ATPase activity. EmbR contains a regulatory C-terminal forkhead-associated (FHA) domain, which mediates binding to a threonine-phosphorylated site in PknH. The FHA domain is a small phosphopeptide recognition module.
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