Sequence alignment between 1is7(K) and UniProt seq P70552 (GFRP_RAT):

P70552 (GFRP_RAT): GTP cyclohydrolase 1 feedback regulatory protein from Rattus norvegicus
                 10        20        30        40        50        60        70        80    
         ---------+---------+---------+---------+---------+---------+---------+---------+----
UniProt: MPYLLISTQIRMEVGPTMVGDEHSDPELMQQLGASKRRVLGNNFYEYYVNDPPRIVLDKLECRGFRVLSMTGVGQTLVWCLHKE
PDB seq: MPYLLISTQIRMEVGPTMVGDEHSDPELMQQLGASKRRVLGNNFYEYYVNDPPRIVLDKLECRGFRVLSMTGVGQTLVWCLHKE
         ---------+---------+---------+---------+---------+---------+---------+---------+----
                 10        20        30        40        50        60        70        80