TT_C0906 V-type ATP synthase beta chain VATB_THET2 V-ATPase subunit B Produces ATP from ADP in the presence of a proton gradient across the membrane. The V-type beta chain is a regulatory subunit (By similarity). 478 MDLLKKEYTGITYISGPLLFVENAKDLAYGAIVDIKDGTGRVRGGQVIEVSEEYAVIQVFEETTGLDLATTSVSLVEDVARLGVSKEMLGRRFNGIGKPIDGLPPITPEKRLPITGLPLNPVARRKPEQFIQTGISTIDVMNTLVRGQKLPIFSGSGLPANEIAAQIARQATVRPDLSGEGEKEEPFAVVFAAMGITQRELSYFIQEFERTGALSRSVLFLNKADDPTIERILTPRMALTVAEYLAFEHDYHVLVILTDMTNYCEALREIGAAREEIPGRRGYPGYMYTDLATIYERAGVVEGKKGSVTQIPILSMPDDDRTHPIPDLTGYITEGQIQLSRELHRKGIYPPIDPLPSLSRLMNNGVGKGKTREDHKQVSDQLYSAYANGVDIRKLVAIIGEDALTENDRRYLQFADAFERFFINQGQQNRSIEESLQIAWALLSMLPQGELKRISKDHIGKYYGQKLEEIWGAPQALD atpB