Table 2. Gene transcripts whose expression (arithmetic) was significantly increased when G. sulfurreducens was grown within a current-harvesting 10 mA potentiostat biofilm versus a fumarate control biofilm.

Locus ID	Common Name	Role Category/Main Role	Subrole	fold change
GSU1497	hypothetical protein			8.05
GSU1496	pilA, pilin domain protein	Unknown function	General	6.03
GSU2737	omcB, polyheme membrane-associated cytochrome c	Energy metabolism	Anaerobic	6.00
GSU2076	omcZ, cytochrome c family protein	Energy metabolism	Electron transport	5.70
GSU3401	branched-chain amino acid ABC transporter, periplasmic amino acid-binding protein, putative	Transport and binding proteins	Amino acids, peptides and amines	5.03
GSU2733	hypothetical protein, in operon with omcC			4.02
GSU2732	cytochrome c family protein, in operon with omcC	Energy metabolism	Electron transport	2.78
GSU3403	hypothetical protein			2.76
GSU2739	hypothetical protein, in operon with omcB			2.47
GSU2075	subtilisin	Protein fate	Degradation of proteins, peptides, and glycopeptides	2.08
GSU3406	amino acid ABC transporter, periplasmic amino acid-binding protein	Transport and binding proteins	Amino acids, peptides and amines	1.90
GSU0975	phage tail sheath protein, putative	Other categories	Prophage functions	1.82
GSU3402	hypothetical protein			1.63

Limma Analysis with a maximum p value of 0.001 was used for statistical analysis.