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EMBO J. 1994 Feb 1;13(3):562-74.

Kin recognition between medial Golgi enzymes in HeLa cells.

Author information

1
Cell Biology Laboratory, Imperial Cancer Research Fund, London, UK.

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.

PMID:
8313901
PMCID:
PMC394845
[Indexed for MEDLINE]
Free PMC Article

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