>sp|C3MQL4|VATB_SULIL V-type ATP synthase beta chain OS=Sulfolobus islandicus GN=atpB MLSVREFSNISMIKGPLIYVQGVTDASYNELVEIEMPNGEKRRGLVIDSQMGIAIVQVFE GTTGVSPTGTKIRMLGRGLEVKISEEMLGRIFNPLGDSLDNGPPVIKGEKRDINGSPLNP AAREYPEEFIQTGISAIDGLNALLRGQKLPIFSGSGLPANMLAAQIAKQATVRGEESNFA VVFAAIGARYDDALFFRKFFEETGAINRVAMIVSLANEPPVMKTLTPKTALTLAEYLAFE QDMHVLAILIDMTNYCEALREISAAREEVPGRGGYPGYMYTDLATIYERAGKVLGKKGSI TQMPILTMPNDDITHPIPDLTGYITEGQIVLDRALYNKGIYPPINVLMSLSRLAKDGIGE GKTRDDHKDVSNQLFASYARAVDTRGLAAIIGEDSLSEVDRKYLLFGELFERKFVSQGFN ENRDIETTLDIGWEILSVLPESELTNIKTQYIKKYHPNYRGKK