>tr|Q8IZH9|Q8IZH9_HUMAN GTP cyclohydrolase 1 (Fragment) OS=Homo sapiens OX=9606 PE=2 SV=1 AYSSILSSLGENPQRQGLLKTPWRAASAMQFFTKGYQETISDVLNDAIFDEDHDEMVIVK DIDMFSMCEHHLVPFVGKVHIGYLPNKQVLGLSKLARIVEIYSRRLQVQERLTKQIAVAI TEALRPAGVGVVVEATHMCMVMRGVQKMNSKTVTSTMLGVFREDPKTREEFLTLIRS