Cited by 179Galectins and Cancer BiologyGlycosylation and Glycoproteins ResearchCellular transport and secretion

ERGIC-53 is a functional mannose-selective and calcium-dependent human homologue of leguminous lectins.

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Itin, C, Roche, A C, Monsigny, M, Hauri, H P·1996·Molecular Biology of the Cell

Abstract

Based on sequence homologies with leguminous lectins, the intermediate compartment marker ERGIC-53 was proposed to be a member of a putative new class of animal lectins associated with the secretory pathway. Independent, a promyelocytic protein, MR60, was purified by mannose-column chromatography, and a cDNA was isolated that matched MR60 peptide sequences. This cDNA was identical to that of ERGIC-53 and homologies with the animal lectin family of the galectins were noticed. Not all peptide sequences of MR60, however, were found in ERGIC-53, raising the possibility that another protein associated with ERGIC-53 may possess the lectin activity. Here, we provide the first direct evidence for a lectin function of ERGIC-53. Overexpressed ERGIC-53 binds to a mannose column in a calcium-dependent manner and also co-stains with mannosylated neoglycoprotein in a morphological binding assay. By using a sequential elution protocol we show that ERGIC-53 has selectivity for mannose and low affinity for glucose and GlcNAc, but no affinity for galactose. To experimentally address the putative homology of ERGIC-53 to leguminous lectins, a highly conserved protein family with an invariant asparagine essential for carbohydrate binding, we substituted the corresponding asparagine in ERGIC-53. This mutation, as well as a mutation affecting a second site in the putative carbohydrate recognition domain, abolished mannose-column binding and co-staining with mannosylated neoglycoprotein. These findings establish ERGIC-53 as a lectin and provide functional evidence for its relationship to leguminous lectins. Based on its monosaccharide specificity, domain organization, and recycling properties, we propose ERGIC-53 to function as a sorting receptor for glyco-proteins in the early secretory pathway.

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Crossref · 10.1091/mbc.7.3.483

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  • ERGIC-53 is a mannose-selective and calcium-dependent human homolog of leguminous L-type lectins and acts as a critical chaperone for coagulation factors V and VIII during their biosynthesis in hepatocytes and endothelial cells.

    “the LMAN1 gene product ERGIC-53 in the ER-Golgi intermediate compartment is a mannose-selective and calcium-dependent human homolog of leguminous L-type lectins (892) and acts as a critical chaperone for the coagulation factors V and VIII during their biosynthesis in hepatocytes (893) and endothelial cells (894) respectively”

    From Biological roles of glycans (2017) · cites this paper as [892]

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Authors
Itin, C., Roche, A. C., Monsigny, M., & Hauri, H. P.
Affiliations
University of Basel (CH)
Venue
Molecular Biology of the Cell
Published
1996-03
Volume
7
Issue
3
Pages
483-493
ISSN
  • 1059-1524 (ISSN-L)
  • 1939-4586
OpenAlex
W2142329004
Cited by
179
References
61
Citations by year
2026: 5 · 2025: 3 · 2024: 3 · 2022: 10 · 2021: 4 · 2020: 5 · 2019: 2 · 2018: 2 · 2017: 2 · 2016: 4 · 2015: 3 · 2014: 2 · 2013: 5 · 2012: 2
FWCI
6.85
Type
journal article
Language
en
Open access
Locations
  • Molecular Biology of the Cell (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • edoc (University of Basel) (acceptedVersion)
  • edoc (University of Basel)
Funders
  • Styrelsen för Internationellt Utvecklingssamarbete
  • Association pour la Recherche sur le Cancer
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Galectins and Cancer Biology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glycosylation and Glycoproteins Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
ERGIC-53, galectins, lectin function, calcium-dependent binding, secretory pathway, intermediate compartment, carbohydrate recognition domain, asparagine substitution, protein recycling
MeSH terms
Amino Acid Sequence, Animals, Epitopes, Calcium, Cell Line, Transformed, Chlorocebus aethiops, Humans, Mannose, Membrane Proteins, Molecular Sequence Data, Mutation, Structure-Activity Relationship, Gene Expression, Lectins, Mannose-Binding Lectins

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