>1n3t_O mol:protein length:221  GTP cyclohydrolase I
PSLSKEAALVHEALVARGLETPLRPPVHEMDNETRKSLIAGHMTEIMQLLNLDLADDSL
METPHRIAKMYVDEIFSGLDYANFPKITLIENKMKVDEMVTVRDITLTSTCEHHFVTID
GKATVAYIPKDSVIGLSKINRIVQFFAQRPQVQERLTQQILIALQTLLGTNNVAVSIDA
VHYSVKARGIRDATSATTTTSLGGLFKSSQNTRHEFLRAVRHHN