>tr|E4S4C4|E4S4C4_CALKI Uncharacterized membrane protein OS=Caldicellulosiruptor kristjanssonii (strain ATCC 700853 / DSM 12137 / I77R1B) GN=Calkr_0838 PE=4 SV=1 MGRIFAIISTILGSIIGAGFSTGQEIFYFFSQFKEKSFFYIGFSSILIFLILLYLVNIRIKSRIILMIFKSYILLFSVIT LIVMFSAFGQLGVEFLGVSKYIFTLLCFVLSIAIFKHGLLAVINMNKVVVSILITALIFVFLKAWHKNEIMFQFESLRCT LPKDILNHLIFPLLYSTYNSLLAFPVVNGLKERFCQKEIKISIGISSIIIFFLLSIINVMLLWEANLQTSQMPLLKVEKN IILHFILVTCAFLEILTTTLANYMGLSYSIKNPKAEFVIIILSLILGFNEFQELLRKLYSLMGYIGLGIIAMLSLSTLLL KDRRLK