Table 2.

Conservation of RNAP β′ subunit residues

DOI: http://dx.doi.org/10.7554/eLife.08504.008

Residue	% Identity*	Blosum62 score*, †	Distribution of residues from alignment*
β′Y34	99.5	0.976	Y 803; H 1; Q 1; F 2
β′R35	99.4	0.980	R 829; K 5

^*Determined from an alignment of 834 bacterial RNAP β′ subunit sequences (Lane and Darst, 2010).

^†Blosum62 score calculated by PFAAT (Johnson et al., 2003).