sp|Q82EH1|R31B2_STRAW 50S ribosomal protein L31 type B 2 OS=Streptomyces avermitilis (strain ATCC 31267 / DSM 46492 / JCM 5070 / NBRC 14893 / NCIMB 12804 / NRRL 8165 / MA-4680) OX=227882 GN=rpmE2-2 PE=3 SV=1