Legume-like lectin (IPR005052)

Short name: Lectin_leg

Overlapping homologous superfamilies

Domain relationships


Lectins are structurally diverse proteins that bind to specific carbohydrates. This family includes the VIP36 and ERGIC-53 lectins. These two proteins were the first members of the family of animal lectins similar to the leguminous plant lectins [PMID: 8205612]. The alignment for this family is towards the N terminus, where the similarity of VIP36 and ERGIC-53 is greatest. Although they have been identified as a family of animal lectins, this alignment also includes yeast sequences[PMID: 8205612].

ERGIC-53 is a 53kDa protein, localised to the intermediate region between the endoplasmic reticulum and the Golgi apparatus (ER-Golgi-Intermediate Compartment, ERGIC). It was identified as a calcium-dependent, mannose-specific lectin [PMID: 8868475]. Its dysfunction has been associated with combined factors V and VIII deficiency, suggesting an important and substrate-specific role for ERGIC-53 in the glycoprotein-secreting pathway [PMID: 8868475,PMID: 10090935].

The L-type lectin-like domain has an overall globular shape composed of a beta-sandwich of two major twisted antiparallel beta-sheets. The beta-sandwich comprises a major concave beta-sheet and a minor convex beta-sheet, in a variation of the jelly roll fold [PMID: 11850423, PMID: 14643651, PMID: 16439369, PMID: 17652092].

GO terms

Biological Process

No terms assigned in this category.

Molecular Function

No terms assigned in this category.

Cellular Component

GO:0016020 membrane

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.
PROSITE profiles