Table 1

UDP-GlcNAc 2-epimerase activity and amount of membrane glycoconjugate-bound sialic acid (13) in BJA-B subclones and stable transfectants (34). Values shown are arithmetic means ± SD.

Cells (N)UDP-GlcNAc 2-epimerase (μU/mg of protein) NeuAc (nmol/mg of protein)
BJA-B (4)16 ± 526 ± 6
K43 (4)19 ± 331 ± 6
K88 (6)18 ± 2 24 ± 4
K6 (4)<0.29 ± 3
K20 (6)<0.28 ± 3
K20Neo1 (3)<0.27 ± 2
K20α2,6ST (3)<0.29 ± 3
K20rEpi1 (5)23 ± 624 ± 5
K20rEpi2 (5)5 ± 119 ± 3
K88rEpi (4)137 ± 3225 ± 6