The present invention belongs to the field of biomedicine, and provided is a PEG-modified polypeptide capable of inhibiting gp96, which comprises PIBC linked by a covalent bond and PEG having an average molecular weight of 20,000-40,000. Further provided is a method for preparing the PEGylated polypeptide, a drug or preparation comprising the PEGylated polypeptide, and a use of the PEGylated polypeptide.

The present disclosure is related to peptides comprising modified aspartic acid and glutamic acid moieties, methods of making such peptides, and methods of using such modified peptides to selectively direct cleavage of peptide bonds. Selective peptide bond cleavage is advantageous in peptide sequencing applications, such as automated peptide sequencing applications.

Provided herein are thiosuccinyl-crosslinked hemoglobin analogs useful as blood replacement agents, pharmaceutical compositions comprising the same and the methods of use and preparation thereof.

The invention relates to the use of a microdevice for the modification of protein with carbohydrate. Preferably for the glycation of protein with a mono-, di-, oligo- or polysaccharide(s). The invention also relates to the process for modifying protein with carbohydrate in a microdevice. The invention also relates to a process for preparing a food, feed, personal care, cosmetic, pharmaceutical, paper or corrugated board product comprising the process steps to prepare the modified protein and the step of combining the modified protein with at least one other ingredient.

The present disclosure relates to a method of synthesizing cyclosporine derivatives. The method includes: providing a precursor fluid of the cyclosporine derivative, an alkaline fluid and a ClCH.sub.2OCOCl solution; premixing the precursor fluid and the alkaline fluid to obtain a premixed solution; feeding the premixed solution into a first reaction chamber, reacting to prepare a first reaction liquid; feeding the first reaction liquid into a second reaction chamber, reacting the first reaction liquid with a CO.sub.2 fluid to prepare a second reaction liquid; and reacting the second reaction liquid with the ClCH.sub.2OCOCl solution.

Shielding enzymes are made by modifying the enzyme surface with silica precursors and then depositing silica to a desired thickness while retaining biological activity of the enzyme.

An object of the present invention is to provide a novel method having high efficiency and versatility for a peptide thioester and peptide. The present invention provides a method for producing a peptide thioester, comprising the steps of: (1) providing a peptide thioester having a CGC triplet at the C-terminal; (2) causing a transfer between an SH group of the C-terminal cysteine and a carbonyl group of the glycine in the CGC triplet to obtain an R-X-CG-thioester; and (3) causing, in the R-X-CG-thioester, a transfer between the SH group of the cysteine and a carbonyl group of X, and a transfer between an amino group of the cysteine and a thiol group of the glycine to obtain a peptide thioester, and a method for producing a peptide using the peptide thioester produced by this method.

The present invention is broadly concerned with new in vitro glycosylation methods that provide rational approaches for producing glycosylated proteins, and the use of glycosylated proteins. In more detail, the present invention comprises methods of glycosylating a starting protein having an amino sidechain with a nucleophilic moiety, comprising the step of reacting the protein with a carbohydrate having an oxazoline moiety on the reducing end thereof, to covalently bond the amino sidechain of the starting protein with the oxazoline moiety, wherein the glycosylated protein substantially retains the structure and function of the starting protein. Target proteins include oxidase, oxidoreductase and dehydrogenase enzymes. The glycosylated proteins advantageously have molecular weights of at least about 7500 Daltons. In a further embodiment, the present invention concerns the use of glycosylated proteins, fabricated by the methods disclosed herein, in the assembly of amperometric biosensors.

This invention provides compositions comprising linked amino acid sequences, pharmaceutical compositions comprising linked amino acid sequences, and methods of making thereof. This invention also provides methods of delivering said compositions to subjects and methods of treating various disorders and diseases using the said compositions.

The present disclosure relates generally to methods of preparing glycoconjugates containing a saccharide conjugated to a carrier protein by use of stable nitroxyl radical related agent/oxidant as an oxidizing agent, to immunogenic compositions comprising such glycoconjugates, and to methods for the use of such glycoconjugates and immunogenic compositions.