1psk
From Proteopedia
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[[Image:1psk.gif|left|200px]] | [[Image:1psk.gif|left|200px]] | ||
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'''THE CRYSTAL STRUCTURE OF AN FAB FRAGMENT THAT BINDS TO THE MELANOMA-ASSOCIATED GD2 GANGLIOSIDE''' | '''THE CRYSTAL STRUCTURE OF AN FAB FRAGMENT THAT BINDS TO THE MELANOMA-ASSOCIATED GD2 GANGLIOSIDE''' | ||
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[[Category: Murali, R.]] | [[Category: Murali, R.]] | ||
[[Category: Pichla, S L.]] | [[Category: Pichla, S L.]] | ||
| - | [[Category: | + | [[Category: Carbohydrate]] |
| - | [[Category: | + | [[Category: Fab]] |
| - | [[Category: | + | [[Category: Gd2-ganglioside]] |
| - | [[Category: | + | [[Category: Immunoglobulin]] |
| - | [[Category: | + | [[Category: Melanoma]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 05:26:22 2008'' | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 02:26, 3 May 2008
THE CRYSTAL STRUCTURE OF AN FAB FRAGMENT THAT BINDS TO THE MELANOMA-ASSOCIATED GD2 GANGLIOSIDE
Overview
The GD2 ganglioside is a cell-surface component that appears on the surface of metastatic melanoma cells and is a marker for the progression of the disease. The ME36.1 monoclonal antibody binds to the GD2 ganglioside and has shown potential as a therapeutic antibody. ME36.1 is a possible alternative therapy to radiation, which is often ineffective in late-stage melanoma. The crystal structure of the Fab fragment of ME36.1 has been determined using molecular replacement and refined to an R factor of 20.4% at 2.8 A resolution. The model has good geometry with root-mean-square deviations of 0.008 A from ideal bond lengths and 1.7 degrees from ideal bond angles. The crystal structure of the ME36.1 Fab shows that its complementarity determining region forms a groove-shaped binding site rather than the pocket-type observed in other sugar binding Fabs. Molecular modeling has placed a four-residue sugar, representative of GD2, in the antigen binding site. The GD2 sugar moiety is stabilized by a network of hydrogen bonds that define the specificity of ME36.1 toward its antigen.
About this Structure
1PSK is a Protein complex structure of sequences from Mus musculus. Full crystallographic information is available from OCA.
Reference
The crystal structure of a Fab fragment to the melanoma-associated GD2 ganglioside., Pichla SL, Murali R, Burnett RM, J Struct Biol. 1997 Jun;119(1):6-16. PMID:9216084 Page seeded by OCA on Sat May 3 05:26:22 2008
