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. 1994 Feb 1;13(3):562-74.
doi: 10.1002/j.1460-2075.1994.tb06294.x.

Kin recognition between medial Golgi enzymes in HeLa cells

T Nilsson  1 , M H Hoe, P Slusarewicz, C Rabouille, R Watson, F Hunte, G Watzele, E G Berger, G Warren
Affiliations

Kin recognition between medial Golgi enzymes in HeLa cells

T Nilsson et al. EMBO J. .

Abstract

The medial Golgi enzymes, N-acetylglucosaminyltransferase I (NAGT I) and mannosidase II (Mann II), and the trans Golgi enzyme, beta-1,4-galactosyltransferase (GalT) were each retained in the endoplasmic reticulum (ER) by grafting on the cytoplasmic tail of the p33 invariant chain. Transient and stable expression of p33/NAGT I in HeLa cells caused relocation of endogenous Mann II to the ER and transient expression of p33/Mann II had a similar effect on endogenous NAGT I. Neither of these endogenous medial enzymes were affected by transient expression of p33/GalT. These data provide strong evidence for kin recognition between medial Golgi enzymes and suggest a role for them in the organization of the Golgi stack.

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