4mzk

Crystal Structure of MTIP from Plasmodium falciparum in complex with pGly[807,811], a stapled myoA tail peptide

spinqualitylabelsall models 4mzk, resolution 1.82Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4mzk is a 2 chain structure with sequence from Plasmodium falciparum 3D7. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.82Å Ligands: ACE, NLE Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q8I4W8_PLAF7 Publication Abstract from PubMed Constrained alpha-helical peptides are an exciting class of molecule designed to disrupt protein-protein interactions (PPIs) at a surface-exposed helix binding site. Complexes that engage more than one helical face account for over a third of structurally characterized helix PPIs, including several examples where the helix is fully buried. However, no constrained peptides have been reported that have targeted this class of interaction. We report the design of stapled and hydrogen bond surrogate (HBS) peptides mimicking the helical tail of the malaria parasite invasion motor myosin (myoA), which presents polar and hydrophobic functionality on all three faces in binding its partner, myoA tail interacting protein (MTIP), with high affinity. The first structures of these different constrained peptides bound to the same target are reported, enabling a direct comparison between these constraints and between staples based on monosubstituted pentenyl glycine (pGly) and disubstituted pentenyl alanine (pAla). Importantly, installation of these constraints does not disrupt native interactions in the buried site, so the affinity of the wild-type peptide is maintained. Crystal Structures of Stapled and Hydrogen Bond Surrogate Peptides Targeting a Fully Buried Protein-Helix Interaction.,Douse CH, Maas SJ, Thomas JC, Garnett JA, Sun Y, Cota E, Tate EW ACS Chem Biol. 2014 Aug 6. PMID:25084543 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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