1kzq

<table><tr><td colspan='2'>[[1kzq]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Toxgo Toxgo]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KZQ OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1KZQ FirstGlance]. <br>

</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">SAG1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=5811 TOXGO])</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1kzq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kzq OCA], [http://pdbe.org/1kzq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1kzq RCSB], [http://www.ebi.ac.uk/pdbsum/1kzq PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1kzq ProSAT]</span></td></tr>

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== Publication Abstract from PubMed ==

Toxoplasma gondii is a persistent protozoan parasite capable of infecting almost any warm-blooded vertebrate. The surface of Toxoplasma is coated with a family of developmentally regulated glycosylphosphatidylinositol (GPI)-linked proteins (SRSs), of which SAG1 is the prototypic member. SRS proteins mediate attachment to host cells and interface with the host immune response to regulate the virulence of the parasite. The 1.7 A structure of the immunodominant SAG1 antigen reveals a homodimeric configuration in which the dimeric interface is mediated by an extended beta-sheet that forms a deep groove lined with positively charged amino acids. This basic groove seems to be conserved among SRS proteins and potentially serves as a sulfated proteoglycan-binding site on target cell surfaces, thus rationalizing the promiscuous attachment properties of Toxoplasma to a broad range of host cell types.

Structure of the immunodominant surface antigen from the Toxoplasma gondii SRS superfamily.,He XL, Grigg ME, Boothroyd JC, Garcia KC Nat Struct Biol. 2002 Aug;9(8):606-11. PMID:12091874<ref>PMID:12091874</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 1kzq" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Toxgo]]

[[Category: Boothroyd, J C]]

[[Category: Garcia, K C]]

[[Category: Grigg, M E]]

[[Category: He, X]]

[[Category: Immune system]]

[[Category: Mad]]

[[Category: Major surface antigen]]

[[Category: Parasite invasion]]

[[Category: Sag1]]