7kgc | pdb_00007kgc

Crystal structure of a perchloric acid-soluble protein (PSP) from Trichomonas vaginalis at 1.95 A

spinqualitylabelsall models 7kgc, resolution 1.95Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7kgc is a 4 chain structure with sequence from Trichomonas vaginalis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.95Å Ligands: TRS Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A2DAL5_TRIV3 Publication Abstract from PubMed To understand whether protein Tv-PSP1 from Trichomonas vaginalis recognizes mRNA parasite stem-loop structures, we conducted REMSA and intrinsic fluorescence assays. We found the recombinant Tv-PSP1 structure, determined with X-ray crystallography, showed unusual thermal stability of the quaternary structure, associated with a disulfide bridge CYS76-CYS104. To gain deeper insight into the Tv-PSP1 interaction with mRNA stem-loops (mRNAsl) and its relationship with thermal stability, we also used an integrated computational protocol that combined molecular dynamics simulations, docking assays, and binding energy calculations. Docking models allowed us to determine a putative contact surface interaction region between Tv-PSP1 and mRNAsl. We determined the contributions of these complexes to the binding free energy (DeltaG(b)) in the electrostatic (DeltaG(elec)) and nonelectrostatic (DeltaG(non-elec)) components using the Adaptive Poisson-Boltzmann Solver (APBS) program. We are the first, to the best of our knowledge, to show the interaction between Tv-PSP1 and the stem-loop structures of mRNA. A Putative New Role of Tv-PSP1 Recognizes IRE and ERE Hairpin Structures from Trichomonas vaginalis.,Millan-Pacheco C, Arreola R, Villalobos-Osnaya A, Garza-Ramos G, Serratos IN, Diaz-Vilchis A, Rudino-Pinera E, Alvarez-Sanchez ME Pathogens. 2023 Jan 3;12(1):79. doi: 10.3390/pathogens12010079. PMID:36678426 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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