The Impact of Pyroglutamate: Sulfolobus acidocaldarius Has a Growth Advantage over Saccharolobus solfataricus in Glutamate-Containing Media

Table 1

Growth parameters of Sulfolobus acidocaldarius and Saccharolobus solfataricus. Maximum growth rate μ (h^-1), maximum cell dry weight CDW_max (g L^-1), maximal substrate (glutamate and pyroglutamate) uptake rate qS_max (mmol g_CDW^-1 h^-1), and yield coefficient Y at OD_max (g_CDW/mol of amino acid carbon) of S. acidocaldarius MW001 and S. solfataricus P2 grown on L-glutamate (Glu) or L-pyroglutamate (Glp) (each 24 mM). Values represent the average of four independent experiments. Errors represent the standard deviation.

	Amino acid	μmax; (h^-1)	CDWmax; (g L^-1)	qSmax; (mmol gCDW^-1 h^-1)	Y; (gCDW molC^-1)
S. acidocaldarius	Glu
S. solfataricus	Glu
S. acidocaldarius	Glp
S. solfataricus	Glp	nd	nd	nd	nd

nd: no growth during the cultivation period of 22 d detected.