>sp|A1VHE5|HIS3_DESVV Phosphoribosyl-AMP cyclohydrolase OS=Desulfovibrio vulgaris subsp. vulgaris GN=hisI MTAFVPDFGKAGGLVPAIAQDADTGEVLMMAWMNAEAFEMTLKTGEAHYFSRSRGRLWHK GGTSGHTQHIRAVRLDCDSDTILLLVEQRGGAACHEGYRSCFYREMKDGEVSICSPKVFD PKEVYK