TABLE 1.

Cell surface physicochemical properties of and adhesion to graphite felt by Shewanella cells

Species and strain	Zeta potential (mV)a	Affinity to hexadecane (%)b	Adhesion to graphite felt (%)c
S. oneidensis
MR-1	−3.1 ± 0.8	10.9 ± 0.1	26.6 ± 1.9
4A	−19.7 ± 1.2	31.9 ± 4.5	NDd
ΔSO3177	−16.4 ± 0.4	30.2 ± 4.5	55.2 ± 3.0
ΔSO3177(pBBR-3177)	−5.1 ± 0.9	ND	23.2 ± 2.7
S. loicha PV-4	−23.0 ± 0.6	4.8 ± 1.9	22.7 ± 1.1

^aMeasured in 0.01 M NaCl-0.05 M HEPES (pH 7.4). Values are means ± standard deviations (n = 6).

^bPercentage of cells partitioned into the hydrophobic solvent hexadecane. Values are means ± standard deviations (n = 3).

^cPercentage of cells adhered on a piece of graphite felt. Values are means ± standard deviations (n = 3).

^dND, not determined.