2JKS:
reference: Structural characterization of the bradyzoite surface antigen (BSR4) from Toxoplasma gondii: A unique addition to the SAG1 related superfamily., Crawford J, Grujic O, Bruic E, Czjek M, Grigg ME, Boulanger MJ, J Biol Chem. 2009 Jan 20. PMID: 19155215

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