>sp|B2UV41|TRPA_HELPS Tryptophan synthase alpha chain OS=Helicobacter pylori GN=trpA MRYKNMFETLKKQEKMAFIPFVTLGDPNYALSFEIVKTLIASGVSALELGFAFSDPVADG VTIQASHLRALKHASMAKNFQLLRAIRDYNPHIPIGLLAYANLIFSYGVDNFYAQIKECG VDSVLIADMPLIEKELVLKSAQKHQIKQIFIASPNASNKDLERAAMHSQGYIYTLARSGV TGASRILENDASAIIKTLKTFSPTPALLGFGISKKEHIKNAKGMGADGVICGSALVKIIE ENLNDENAMLERIKGFIGEMIS