TABLE 3.

Hexose and methylpentose levels in cps2K mutants

Strain	Level (μg/108 CFU)a
	Hexose, isolated polymer	Methylpentose
		Isolated polymer	Cell wall
D39 (Cps+ parent)	6.7 ± 0.9 (6.7)	0.67 (0.67)	0.736 (0.727)
BX511 (Δcps2K)	0.35 ± 0.01 (0.35)	0.037 (0.034)	0.01 (0)
AM1000 (Cps−)	0.004 ± 0.001 (0)	0.003 (0)	0.01 (0)
BX515 (cps2K repair of BX511)	NDb	ND	0.0156 (0.0056)

^aPolymers isolated from 250-ml cultures were assayed for both hexose and methylpentose, and cell walls isolated from a 250-ml culture were assayed for methylpentose. The hexose values represent means ± standard errors for two independent cultures. Values in parentheses are after the subtraction of the Cps⁻ value for AM1000.

^bND, not determined.