>sp|B3QLJ0|HIS3_CHLP8 Phosphoribosyl-AMP cyclohydrolase OS=Chlorobaculum parvum GN=hisI MSENQDTQKSFLETVKFDDRGLVPAIVQDHETGKVLMMAWMNLESLKMTLEKKKACYWSR SRNKLWLKGESSGNMQDVHDIMIDCDGDTLLLKVSQKGGACHVGYHSCFYRKTTDGEQME ICDTLMFDPEEVYGKKS