TABLE 5 .

Effects of inhibitors on ¹⁴C-labeled amino acid uptake by the WT and ALZ42 strains

Strain and presence of added H2	14C-labeled amino acid uptake (cpm [103]/108 cells)a at:
	5 min	10 min
WT
None	29.0 ± 2.0	31.0 ± 1.1
CCCP	0.7 ± 0.5b	0.3 ± 0.2b
Orthovanadate	14.8 ± 1.2b	18.7 ± 1.0b
ALZ42 (Hyb only)
None	14.0 ± 1.6	18.2 ± 3.5
CCCP	0.3 ± 0.1b	0.04 ± 0.07b
Orthovanadate	5.5 ± 0.8b	9.5 ± 0.7b

^a Values represent ¹⁴C-labeled amino acid uptake by 10⁸ cells ± standard deviation (n = 4).

^b Significantly lower uptake level than without inhibitor (P < 0.005 [Student’s t test]).