The addition of an inline differential viscometer permits characterization of molecular conformation, including hydrodynamic radius, for each thin chromatographic slice as the sample elutes from the SEC column.
Molecular chaperones have central roles in each of the arms of the PN (protein synthesis, folding, disaggregation, and degradation), leading to the proposal that modulation of chaperone function could have therapeutic benefits for the large and growing family of diseases of protein conformation including neurodegeneration, metabolic diseases, and cancer.
Similar to our Alb/76 study [28], gel filtration of the purified recombinant protein confirmed that PR8 ED-W187A is likely to be monomeric as compared with the WT ED dimer, indicating that no other alternative dimer conformation (including the strand-strand dimer) forms in solution in the absence of W187 (Fig. 3A).
Other compounds affecting the S100A4 conformation included ketoconazole, bepridil and nicergoline (Garrett et al., 2008).
Fluorescent activity of GFP in response to light excitation depends on post-translational modifications, notably the folding of the protein to an appropriate conformation, including the autocatalytic formation of the chromophore [ 41].
The interaction of the enzyme with the lipid interface is assumed to induce a substantial change of the enzyme conformation including the movement of a loop that covers the active site, referred to as lid region.
This complexity not only entails differences in Fn stiffness and conformation (including different spatial distribution of ligands at the fiber surface), but also varied quantity and composition (e.g. proteoglycans), which can all regulate the observed integrin(s) switching effect.
We used the CHK2 protein conformation, including the conserved water molecule, from the co-crystal structure of compound 30 to dock the set of 50 ligands (Supplementary Table S1) using a rigid docking protocol.
The triphosphate moiety forms only one hydrogen bond (between the β phosphate and Tyr59) in the closed conformation but forms three or four more hydrogen bonds in the open conformation including the two formed by the α phosphate with His212 and Arg255.
