>sp|Q6NVA8|GFRP_XENTR GTP cyclohydrolase 1 feedback regulatory protein OS=Xenopus tropicalis GN=gchfr MPYVLISTQIRMETGPTIVGDEFSDTQLMAQLEADKRTVLGNNFSEYCVNEPPRVTLNKL EKLGYRVVSMTGVGQTLVWCLHKE