TABLE 2.

Genes of the rtg locus

Gene	Product	Frequency (%)a
rtgA
Intact	Peptidase-containing ABC transporter	5.0
Start codon mutation only	Peptidase-containing ABC transporter	14.5
Disrupted	Peptidase-containing ABC transporter, truncated	59.1
rtgB
Intact	Putative transport accessory protein	18.6
Disrupted	Putative transport accessory protein, truncated	2.5
rtgC	GG peptide	15.1
rtgD	Hypothetical protein	99.7
rtgE	GG peptide	7.2
rtgG	GG peptide	4.1
rtgH	Hypothetical protein	40.6
rtgK	GG peptide	41.2
rtgL	Hypothetical protein	83.3
rtgM	GG peptide	59.7
rtgN	Hypothetical protein	82.4
rtgP	Putative integral membrane protein	83.3
rtgQ	Putative integral membrane protein	83.3
rtgR	Rgg-family transcription regulator	78.6
rtgR′	Rgg-family transcription regulator, truncated	36.5
rtgS
Type A	SHP-like pheromone, type A	42.5
Type B	SHP-like pheromone, type B	67.6
Type C	SHP-like pheromone, type C	0.6
rtgT	GG peptide	83.0
rtgU	Hypothetical protein	83.0
rtgV	GG peptide; probable fusion of RtgW and RtgZ	35.5
rtgW	GG peptide	83.0
rtgX	GyrI-like hypothetical protein	21.1
rtgY	Putative integral membrane protein	88.7
rtgZ	Putative integral membrane protein	99.7

^aIn 318 genomes from the Massachusetts collection with fully sequenced gapless rtg loci. May include pseudogenes unless stated otherwise.