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==A TRICLINIC CRYSTAL FORM OF THE LECTIN CONCANAVALIN A==
==A TRICLINIC CRYSTAL FORM OF THE LECTIN CONCANAVALIN A==
<StructureSection load='1vln' size='340' side='right' caption='[[1vln]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
<StructureSection load='1vln' size='340' side='right'caption='[[1vln]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1vln]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Canavalia_ensiformis Canavalia ensiformis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1VLN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1VLN FirstGlance]. <br>
<table><tr><td colspan='2'>[[1vln]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Canavalia_ensiformis Canavalia ensiformis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1VLN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1VLN FirstGlance]. <br>
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==See Also==
==See Also==
*[[Concanavalin A|Concanavalin A]]
*[[Concanavalin 3D structures|Concanavalin 3D structures]]
== References ==
== References ==
<references/>
<references/>
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</StructureSection>
</StructureSection>
[[Category: Canavalia ensiformis]]
[[Category: Canavalia ensiformis]]
[[Category: Large Structures]]
[[Category: Hamodrakas, S J]]
[[Category: Hamodrakas, S J]]
[[Category: Kanellopoulos, P N]]
[[Category: Kanellopoulos, P N]]

Revision as of 13:29, 8 January 2020

A TRICLINIC CRYSTAL FORM OF THE LECTIN CONCANAVALIN AA TRICLINIC CRYSTAL FORM OF THE LECTIN CONCANAVALIN A

Structural highlights

1vln is a 8 chain structure with sequence from Canavalia ensiformis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[LECA_DIOGR] D-mannose/D-glucose-binding lectin. Has anti-inflammatory activity in rats. Induces histamine release in mast cells from rat. Induces lymphocyte proliferation and IFNG production. Shows toxicity against the aquatic snail B.glabrata at concentrations higher than 50 ug/ml.[1] [2] [3] [4] [5] [6]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The molecular structure of a triclinic crystal form of concanavalin A has been refined at 2.4 A resolution. The crystals have unit cell dimensions a = 78.8 A, b = 79.3 A, c = 133.3 A, alpha = 97.1degrees, beta = 90.2degrees, and gamma = 97.5degrees and contain two tetramers per asymmetric unit each with approximate 222 symmetry. The final crystallographic R-factor is 0.205 and the free-R-factor is 0.265 in the resolution range 6.0 to 2.4 A. The conformation of the tetramer is more similar to that found in concanavalin A saccharide complexes than in the previously reported I222 crystal form of uncomplexed concanavalin A. A comparison of the molecular packing between the two crystal forms shows a more open arrangement with large solvent channels through the crystal.

A Triclinic Crystal Form of the Lectin Concanavalin A,Kanellopoulos PN, Tucker PA, Pavlou K, Agianian B, Hamodrakas SJ J Struct Biol. 1996 Jul;117(1):16-23. PMID:8812975[7]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. ↑ Barral-Netto M, Santos SB, Barral A, Moreira LI, Santos CF, Moreira RA, Oliveira JT, Cavada BS. Human lymphocyte stimulation by legume lectins from the Diocleae tribe. Immunol Invest. 1992 Jul;21(4):297-303. PMID:1398779
  2. ↑ Gomes JC, Ferreira RR, Cavada BS, Moreira RA, Oliveira JT. Histamine release induced by glucose (mannose)-specific lectins isolated from Brazilian beans. Comparison with concanavalin A. Agents Actions. 1994 May;41(3-4):132-5. PMID:7524287
  3. ↑ Assreuy AM, Shibuya MD, Martins GJ, De Souza ML, Cavada BS, Moreira RA, Oliveira JT, Ribeiro RA, Flores CA. Anti-inflammatory effect of glucose-mannose binding lectins isolated from Brazilian beans. Mediators Inflamm. 1997;6(3):201-10. PMID:18472821 doi:http://dx.doi.org/10.1080/09629359791695
  4. ↑ Dam TK, Cavada BS, Grangeiro TB, Santos CF, de Sousa FA, Oscarson S, Brewer CF. Diocleinae lectins are a group of proteins with conserved binding sites for the core trimannoside of asparagine-linked oligosaccharides and differential specificities for complex carbohydrates. J Biol Chem. 1998 May 15;273(20):12082-8. PMID:9575151
  5. ↑ Dam TK, Cavada BS, Grangeiro TB, Santos CF, Ceccatto VM, de Sousa FA, Oscarson S, Brewer CF. Thermodynamic binding studies of lectins from the diocleinae subtribe to deoxy analogs of the core trimannoside of asparagine-linked oligosaccharides. J Biol Chem. 2000 May 26;275(21):16119-26. PMID:10747944 doi:http://dx.doi.org/10.1074/jbc.M000670200
  6. ↑ dos Santos AF, Cavada BS, da Rocha BA, do Nascimento KS, Sant'Ana AE. Toxicity of some glucose/mannose-binding lectins to Biomphalaria glabrata and Artemia salina. Bioresour Technol. 2010 Jan;101(2):794-8. doi: 10.1016/j.biortech.2009.07.062., Epub 2009 Sep 17. PMID:19765980 doi:http://dx.doi.org/10.1016/j.biortech.2009.07.062
  7. ↑ Kanellopoulos PN, Tucker PA, Pavlou K, Agianian B, Hamodrakas SJ. A Triclinic Crystal Form of the Lectin Concanavalin A J Struct Biol. 1996 Jul;117(1):16-23. PMID:8812975

1vln, resolution 2.40Å

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