104 research outputs found
Artificial Polypeptide Scaffold for Protein Immobilization
An artificial polypeptide scaffold composed of surface anchor and protein capture domains was designed and expressed in vivo. By using a mutant E. coli phenylalanyl−tRNA synthetase, the photoreactive amino acid para-azidophenylalanine was incorporated into the surface anchor domain. Octyltrichlorosilane-treated surfaces were functionalized with this polypeptide by spin coating and photocrosslinking. The resulting protein films were shown to immobilize recombinant proteins through association of coiled coil heterodimer
Engineering Cooperativity in Biomotor-Protein Assemblies
A biosynthetic approach was developed to control and probe cooperativity in multiunit biomotor assemblies by linking molecular motors to artificial protein scaffolds. This approach provides precise control over spatial and elastic coupling between motors. Cooperative interactions between monomeric kinesin-1 motors attached to protein scaffolds enhance hydrolysis activity and microtubule gliding velocity. However, these interactions are not influenced by changes in the elastic properties of the scaffold, distinguishing multimotor transport from that powered by unorganized monomeric motors. These results highlight the role of supramolecular architecture in determining mechanisms of collective transport
Generation of Surface-Bound Multicomponent Protein Gradients
Spatial control of bioactive ligands is achieved by integrating microfluidics and protein engineering. The proteins of interest are mixed in a gradient generator and immobilized on artificial polypeptide scaffolds through the strong association of heterodimeric ZE/ZR leucine zipper pairs. Protein densities and gradient shapes are easily controlled and varied in this method
ErbB2 pY ‐1248 as a predictive biomarker for Parkinson's disease based on research with RPPA technology and in vivo verification
The alleviative effect of <i>Calendula officinalis</i> L. extract against Parkinson’s disease-like pathology in zebrafish <i>via </i>the involvement of autophagy activation
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