View source for 2atm

[[Image:2atm.gif|left|200px]]

 {{Structure
|PDB= 2atm |SIZE=350|CAPTION= <scene name='initialview01'>2atm</scene>, resolution 2.000&Aring;
|SITE= 
|LIGAND= <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene> and <scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC ACID'>MES</scene>
|ACTIVITY= [http://en.wikipedia.org/wiki/Hyalurononglucosaminidase Hyalurononglucosaminidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.35 3.2.1.35] 
|GENE= 
}}

'''Crystal structure of the recombinant allergen Ves v 2'''


==Overview==
Wasp venom from Vespula vulgaris contains three major allergens: Ves v 1, Ves v 2 and Ves v 5. Here, the cloning, expression, biochemical characterization and crystal structure determination of the hyaluronidase Ves v 2 from family 56 of the glycoside hydrolases are reported. The allergen was expressed in Escherichia coli as an insoluble protein and refolded and purified to obtain full enzymatic activity. Three N-glycosylation sites at Asn79, Asn99 and Asn127 were identified in Ves v 2 from a natural source by enzymatic digestions combined with MALDI-TOF mass spectrometry. The crystal structure of recombinant Ves v 2 was determined at 2.0 A resolution and reveals a central (beta/alpha)(7) core that is further stabilized by two disulfide bonds (Cys19-Cys308 and Cys185-Cys197). Based on sequence alignments and structural comparison with the honeybee allergen Api m 2, it is proposed that a conserved cavity near the active site is involved in binding of the substrate. Surface epitopes and putative glycosylation sites have been compared with those of two other major group 2 allergens from Apis mellifera (honeybee) and Dolichovespula maculata (white-faced hornet). The analysis suggests that the harboured allergic IgE-mediated cross-reactivity between Ves v 2 and the allergen from D. maculata is much higher than that between Ves v 2 and the allergen from A. mellifera.

==About this Structure==
2ATM is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Vespula_vulgaris Vespula vulgaris]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ATM OCA]. 

==Reference==
Structure of recombinant Ves v 2 at 2.0 Angstrom resolution: structural analysis of an allergenic hyaluronidase from wasp venom., Skov LK, Seppala U, Coen JJ, Crickmore N, King TP, Monsalve R, Kastrup JS, Spangfort MD, Gajhede M, Acta Crystallogr D Biol Crystallogr. 2006 Jun;62(Pt 6):595-604. Epub 2006, May 12. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16699186 16699186]
[[Category: Hyalurononglucosaminidase]]
[[Category: Single protein]]
[[Category: Vespula vulgaris]]
[[Category: Coen, J J.F.]]
[[Category: Crickmore, N.]]
[[Category: Gajhede, M.]]
[[Category: Kastrup, J S.]]
[[Category: King, T P.]]
[[Category: Monsalve, R.]]
[[Category: Seppala, U.]]
[[Category: Skov, L K.]]
[[Category: Spangfort, M D.]]
[[Category: MES]]
[[Category: SO4]]
[[Category: beta-alpha-barrel]]

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