Table I.

Galactosyl transferase I (SQV-3) and glucuronyl transferase I (SQV-8) protein activity expressed in COS-7 cells

Acceptor	GalT activity, pmol/h/assay*	GlcAT-I activity, pmol/h/assay*
Xylose-β-nitrophenyl	82  ± 12
GlcNAc-β-nitrophenyl	57  ± 9
GlcNAc-α-nitrophenyl	37  ± 10
Galβ1,3-Galβ-O-NM		137.4  ± 19.8
Galβ-O-2-naphthol		8.6  ± 0.5
Gal1,3β-GalNAc-α-1-O-benzyl		11.8  ± 1
Galβ1,3-GlcNAcβ-O-NM		12.1  ± 0.8
Galβ1,4-GlcNAcβ-O-NM		11  ± 1.2

^*Values are means of two independent experiments run in duplicate. NM, naphthalenemethanol; assays were run for 1–3 h at the optimum temperature (17°C).