TABLE 1.
N-Glycosylation affects the catalytic function of AChE
Cell lysates from HEK293T cells expressing AChETWT, AChETN296Q, AChETN381Q, AChETN495Q, or AChETN296Q/N381Q/N495Q with (mainly G4) or without (mainly G1/G2) PRiMA were subjected to Ellman assays using different concentrations of ATCh as substrate, which would not cause substrate inhibition on AChE. The reaction velocity was determined at each concentration of substrate. Km values were determined according to a Lineweaver-Burk plot. Values are the means ± S.E. obtained from nine independent experiments (n = 9).
−PRiMA | +PRiMA | |
---|---|---|
μm | μm | |
AChETWT | 294 ± 82 | 261 ± 73 |
AChETN296Q | 326 ± 98 | 330 ± 69 |
AChETN381Q | 17,379 ± 2961 | 16,480 ± 3690 |
AChETN495Q | 314 ± 71 | 307 ± 94 |
AChETN296Q/N381Q/N495Q | 19,058 ± 3667 | 17,013 ± 2799 |