sp|Q8A0Y9|REX_BACTN Redox-sensing transcriptional repressor Rex OS=Bacteroides thetaiotaomicron (strain ATCC 29148 / DSM 2079 / JCM 5827 / CCUG 10774 / NCTC 10582 / VPI-5482 / E50) OX=226186 GN=rex PE=3 SV=1