4ge1

Structure of the tryptamine complex of the amine binding protein of Rhodnius prolixus

spinqualitylabelsall models 4ge1, resolution 2.15Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4ge1 is a 4 chain structure with sequence from Rhodnius prolixus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: GOL, TSS Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q86PT9_RHOPR Publication Abstract from PubMed Proteins that bind small-molecule mediators of inflammation and hemostasis are essential for blood-feeding by arthropod vectors of infectious disease. In ticks and triatomine insects, the lipocalin protein family is greatly expanded and members have been shown to bind biogenic amines, eicosanoids and ADP. These compounds are potent mediators of platelet activation, inflammation and vascular tone. In this paper, the structure of the amine-binding protein (ABP) from Rhodnius prolixus, a vector of the trypanosome that causes Chagas disease, is described. ABP binds the biogenic amines serotonin and norepinephrine with high affinity. A complex with tryptamine shows the presence of a binding site for a single ligand molecule in the central cavity of the beta-barrel structure. The cavity contains significant additional volume, suggesting that this protein may have evolved from the related nitrophorin proteins, which bind a much larger heme ligand in the central cavity. Structure and ligand-binding properties of the biogenic amine-binding protein from the saliva of a blood-feeding insect vector of Trypanosoma cruzi.,Xu X, Chang BW, Mans BJ, Ribeiro JM, Andersen JF Acta Crystallogr D Biol Crystallogr. 2013 Jan;69(Pt 1):105-13. doi:, 10.1107/S0907444912043326. Epub 2012 Dec 20. PMID:23275168 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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