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. 2011 Jul 27;286(38):32948–32961. doi: 10.1074/jbc.M111.261248

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