they include a set of genes for rrna 's ( rrnb ) , a gene for spacer trna , trna2glu ( tgtb ) , one of the two genes for ef-tu ( tufb ) , genes for four ribosomal proteins ( rplk , a , j , and l ) , genes for the beta and beta ' subunits of rna polymerase ( rpob and rpoc ) , and genes for three trna 's ( tyru , glut , and thrt ) .
C0035701
rrna 's
C0035553
ribosomal