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=='''Introduction'''==
 
=='''Introduction'''==
  

Revision as of 01:46, 18 October 2014

Microvirin (MVN)---a lectin from Microcystis aeruginosa

Introduction

This plasmid is a basic part of the mannan binding lectin Microvirin (MVN). Microvirin can be expressed in E. coli and it can bind to Microcystis aeruginosa PCC7806 specifically.


Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    COMPATIBLE WITH RFC[25]
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal SapI site found at 23

Usage and Biology

MVN is a lectin isolated from the cyanobacteria Microcystis aeruginosa PCC7806. It is an 108 aa protein that consists of 2 domains. According to a carbohydrate microarray carried out previously, MVN binds to carbohydrate and the highest signals are observed with structures that contain α(1→2) linked mannose residues [1]. A binding partner of MVN was identified in the lipopolysaccharide (LPS) fraction of M. aeruginosa PCC7806 and it possibly represents the O-antigen of a LPS. MVN has been previously expressed in E. coli and its binding effect to cyanobacteria cells is species-specific [1].

Figure 1. Solution structure of MVN. MVN consists of 2 domains, domain A and domain B, which are colored yellow and blue respectively. Domain A is formed by residues 38-93 while domain B is formed by residues 1-37 and 94-108. The mannan binding site is only found in domain A. This figure is taken from Protein Data Bank (PDB ID: 2Y1S).

Reference

1.Kehr, J. C., Zilliges, Y., Springer, A., Disney, M. D., Ratner, D. D., Bouchier, C., ... & Dittmann, E. (2006). A mannan binding lectin is involved in cell–cell attachment in a toxic strain of Microcystis aeruginosa. Molecular microbiology, 59(3), 893-906.