GTP cyclohydrolase I feedback regulatory protein, GFRP, HsT16933, P35
GTP cyclohydrolase I feedback regulatory protein (GCHFR) binds to and mediates tetrahydrobiopterin inhibition of GTP cyclohydrolase I. The regulatory protein, GCHFR, consists of a homodimer. It is postulated that GCHFR may play a role in regulating pheny