TTHA1272 478 atpB V-ATPase subunit B MDLLKKEYTGITYISGPLLFVENAKDLAYGAIVDIKDGTGRVRGGQVIEVSEEYAVIQVFEETTGLDLATTSVSLVEDVARLGVSKEMLGRRFNGIGKPIDGLPPITPEKRLPITGLPLNPVARRKPEQFIQTGISTIDVMNTLVRGQKLPIFSGSGLPANEIAAQIARQATVRPDLSGEGEKEEPFAVVFAAMGITQRELSYFIQEFERTGALSRSVLFLNKADDPTIERILTPRMALTVAEYLAFEHDYHVLVILTDMTNYCEALREIGAAREEIPGRRGYPGYMYTDLATIYERAGVVEGKKGSVTQIPILSMPDDDRTHPIPDLTGYITEGQIQLSRELHRKGIYPPIDPLPSLSRLMNNGVGKGKTREDHKQVSDQLYSAYANGVDIRKLVAIIGEDALTENDRRYLQFADAFERFFINQGQQNRSIEESLQIAWALLSMLPQGELKRISKDHIGKYYGQKLEEIWGAPQALD Produces ATP from ADP in the presence of a proton gradient across the membrane. The V-type beta chain is a regulatory subunit. VATB_THET8 V-type ATP synthase beta chain