>tr|A0A8C6N2L5|A0A8C6N2L5_MUSSI GTP cyclohydrolase 1 feedback regulatory protein OS=Mus spicilegus MPYLLISTQIRMEVGPTMVGDEHSDPELMQHLGASKRSVLGNNFYEYYVNDPPRIVLDKL ECKGFRVLSMTGVGQTLVWCLHKE