摘要:
The present invention provides a protein scaffold, such as an avian pancreatic polypeptide, that can be modified by substitution of two or more amino acid residues that are exposed on the alpha helix domain of the polypeptide when the polypeptide is in a tertiary form.
摘要:
The invention relates to a tRNA synthetase capable of binding Nε-acetyl lysine, wherein said synthetase comprises a polypeptide having at least 90% sequence identity to the amino acid sequence of MbPyIRS, and wherein said synthetase comprises a L266M mutation.
摘要:
The invention provides methods and compositions for in vivo incorporation of unnatural amino acids. Also provided are compositions including proteins with unnatural amino acids.
摘要:
This invention provides compositions and methods for generating components of protein biosynthetic machinery including orthogonal tRNAs, orthogonal aminoacyl-tRNA synthetases, and orthogonal pairs of tRNAs/synthetases. Methods for identifying orthogonal pairs are also provided. These components can be used to incorporate unnatural amino acids into proteins in vivo.
摘要:
This invention provides compositions and methods for generating components of protein biosynthetic machinery including orthogonal tRNAs, orthogonal aminoacyl-tRNA synthetases, and orthogonal pairs of tRNAs/synthetases. Methods for identifying orthogonal pairs are also provided. These components can be used to incorporate unnatural amino acids into proteins in vivo.
摘要:
An insertion apparatus for inserting an object into a body comprising a housing, a piercing structure with a lumen, wherein the piercing structure extends distally from the housing, a vacuum chamber that communicates with the lumen of the piercing structure, a plunger configured to fit within the vacuum chamber, and a guidewire, wherein the insertion apparatus is configured to be operated with a single hand.
摘要:
There is provided a method for evolving an orthogonal rRNA molecule, comprising the steps of: providing one or more libraries of mutant orthogonal rRNA molecules and introducing the libraries into cells such that the orthogonal rRNA is incorporated into ribosomes to provide orthogonal ribosomes; providing one or more orthogonal mRNA molecules which (i) are not translated by natural ribosomes, and (ii) comprise one or more orthogonal mRNA codons; assaying the translation of the orthogonal mRNA and selecting the orthogonal rRNA molecules which translate the orthogonal mRNA, wherein the assay in step (c) requires translation of one or more orthogonal mRNA codons in the orthogonal mRNA; and orthogonal ribosomes incorporating such rRNA molecules.
摘要:
This invention provides compositions and methods for generating components of protein biosynthetic machinery including orthogonal tRNAs, orthogonal aminoacyl-tRNA synthetases, and orthogonal pairs of tRNAs/synthetases. Methods for identifying orthogonal pairs are also provided. These components can be used to incorporate unnatural amino acids into proteins in vivo.
摘要:
Disclosed is a twin buckle assembly with dual release positions. More particularly, the invention relates to a buckle assembly that can lockingly secure two buckle tongues. The buckle assembly includes a single, pivotal latch mechanism that can separately secure one or both of the buckle tongues. Pivotal movement of the latch occurs upon rotation of the buckle cover. Thus, one tongue is released at a first rotational position of the cover and both tongues are released at a second rotational position of the cover. The buckle assembly, thereby, allows the independent removal of lap and shoulder belts.
摘要:
A robust grinding assembly is provided for grinding cooling holes in a dovetail groove by offsetting the drive shaft of the cutting assembly with respect to the center axis of the bar in which it is housed, whereby a larger sized collet can be accommodated.