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Cited by 337

The DOI matches its Crossref record; 15 of the 15 references it cites were found in a registry or an index.

Nuclear pore complex contains a family of glycoproteins that includes p62: glycosylation through a previously unidentified cellular pathway.

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Davis, L I, Blobel, G·1987·Proceedings of the National Academy of Sciences

Abstract

Using a monoclonal antibody (mAb 414), we previously identified a protein of 62 kDa (p62) that was localized to the nuclear pore complex by immunoelectron microscopy. We also showed that p62 binds specifically to wheat germ agglutinin. Therefore, we proposed that this nuclear pore complex protein might be a member of a recently characterized family of glycoproteins that are labeled by in vitro galactosylation of rat liver nuclei and contain O-linked monosaccharidic GlcNAc residues. In support of this, we now show that incubation with N-acetylglucosaminidase reduces the molecular mass of p62 by approximately 3 kDa because of the removal of terminal GlcNAc residues. Moreover, p62 can be galactosylated in vitro by using UDP-[3H]galactose and galactosyltransferase. We also show that most of the GlcNAc residues are added within 5 min of synthesis, when p62 is soluble and cytosolic. Thus, the addition of GlcNAc is carried out in the cytoplasm and is clearly distinct from the N- and O-linked glycosylation pathways of the endoplasmic reticulum and Golgi complex. Using another mAb with a broad specificity for nuclear GlcNAc-containing proteins, we show by immunofluorescence and protein blotting of subnuclear fractions that some of these proteins are in the interior of the nucleus, and others are most likely located in the pore complex.

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Metadata

Authors
Davis, L. I., & Blobel, G.
Venue
Proceedings of the National Academy of Sciences
Published
1987-11
Volume
84
Issue
21
Pages
7552-7556
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2015646338
Cited by
337
References
15
FWCI
6.08
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Nuclear pore complex contains a family of glycoproteins that includes p62: glycosylation through a previously unidentified cellular pathway. https://app.cochat.ai/papers/10.1073/pnas.84.21.7552
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Davis, L. I., & Blobel, G. (1987). Nuclear pore complex contains a family of glycoproteins that includes p62: glycosylation through a previously unidentified cellular pathway. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.84.21.7552

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