Table 3.

Representative non-TEP forming homologs of the MacB ABC transporter.

Protein	Organism(s)	Complex	Substrate(s)	Function(s)	References
LolC, LolE, LolF	Gram-negative bacteria	LolCDE or LolDF	Lipoproteins	Lipoprotein extraction and trafficking	Yakushi et al., 2000; Narita and Tokuda, 2017
FtsX	Gram-positive and Gram-negative bacteria	FtsEX	–	Cell division	Yang et al., 2011; Mavrici et al., 2014; Du et al., 2016
YknZ	Bacillus amyloliquefaciens	YknXYZ	Antimicrobial peptide?	Detoxification?	Yamada et al., 2012; Xu et al., 2017
BceB	Bacillus subtilis	BceABS	Bacitracin,	Sensing & detoxification	Dintner et al., 2014
HrtB	Gram-positives	HrtAB	Heme?	Detoxification?	Stauff et al., 2008; Bibb and Schmitt, 2010
AS-48H	Enterococcus faecalis	AS-48EFGH	Mature AS-48?	Bacteriocin AS-48 export?	Diaz et al., 2003