>1n3t_K mol:protein length:221 GTP cyclohydrolase I PSLSKEAALVHEALVARGLETPLRPPVHEMDNETRKSLIAGHMTEIMQLLNLDLADDSL METPHRIAKMYVDEIFSGLDYANFPKITLIENKMKVDEMVTVRDITLTSTCEHHFVTID GKATVAYIPKDSVIGLSKINRIVQFFAQRPQVQERLTQQILIALQTLLGTNNVAVSIDA VHYSVKARGIRDATSATTTTSLGGLFKSSQNTRHEFLRAVRHHN