A recombinant protein comprising multiple multi-peptide sets includes first through fifth sequencing primers and first through fourth multi-peptide regions. The first multi-peptide region is between the first and the second sequencing primers. The second multi-peptide region is between the second and the third sequencing primers. The third multi-peptide region is between the third and the fourth sequencing primers. The fourth multi-peptide region is between the fourth and the fifth sequencing primers. In each of the multi-peptide regions, multiple functional peptides can be inserted, and manufacturing thereof can be done through expression of the recombinant protein, thereby significantly enhancing the concentrations of the functional peptides. With the combination of peptide having different functions, the recombinant protein product can provide more complete and more comprehensive functionality. This application also discloses a pharmaceutical composition comprising the recombinant protein and a method for preparing the recombinant protein.

A recombinant protein comprising multiple multi-peptide sets includes first through fifth sequencing primers and first through fourth multi-peptide regions. The first multi-peptide region is between the first and the second sequencing primers. The second multi-peptide region is between the second and the third sequencing primers. The third multi-peptide region is between the third and the fourth sequencing primers. The fourth multi-peptide region is between the fourth and the fifth sequencing primers. In each of the multi-peptide regions, multiple functional peptides can be inserted, and manufacturing thereof can be done through expression of the recombinant protein, thereby significantly enhancing the concentrations of the functional peptides. With the combination of peptide having different functions, the recombinant protein product can provide more complete and more comprehensive functionality. This application also discloses a pharmaceutical composition comprising the recombinant protein and a method for preparing the recombinant protein.

The present invention relates to a method for prolonging half-life of a protein or a (poly)peptide by replacing one or more amino acid residues of the protein. Further, the present invention is about the protein having a prolonged half-life prepared by the method above.

The present invention relates to a method for prolonging half-life of a protein or a (poly)peptide by replacing one or more amino acid residues of the protein. Further, the present invention is about the protein having a prolonged half-life prepared by the method above.

The present invention relates to a method for prolonging half-life of a protein or a (poly)peptide by replacing one or more amino acid residues of the protein. Further, the present invention is about the protein having a prolonged half-life prepared by the method above.

The present invention relates to a method for prolonging half-life of a protein or a (poly)peptide by replacing one or more amino acid residues of the protein. Further, the present invention is about the protein having a prolonged half-life prepared by the method above.

The present invention provides a process for the liquid phase synthesis of the Ghrelin analog H-Inp-(D)Bal-(D)Trp-Phe-Apc-NH.sub.2 (SEQ ID NO: 1, Formula (I)), pharmaceutically acceptable salts thereof.

The present invention provides a process for the liquid phase synthesis of the Ghrelin analog H-Inp-(D)Bal-(D)Trp-Phe-Apc-NH.sub.2 (SEQ ID NO: 1, Formula (I)), pharmaceutically acceptable salts thereof.

Methods and system for solid phase peptide synthesis are provided. Solid phase peptide synthesis is a known process in which amino acid residues are added to peptides that have been immobilized on a solid support. New amino acid residues are added via a coupling reaction between an activated amino acid and an amino acid residue of the immobilized peptide. Amino acids may be activated using, e.g., a base and an activating agent. Certain inventive concepts, described herein, relate to methods and systems for the activation of amino acids. These systems and methods may allow for fewer side reactions and a higher yield compared to conventional activation techniques as well as the customization of the coupling reaction on a residue-by-residue basis without the need for costly and/or complex processes.

Methods and system for solid phase peptide synthesis are provided. Solid phase peptide synthesis is a known process in which amino acid residues are added to peptides that have been immobilized on a solid support. New amino acid residues are added via a coupling reaction between an activated amino acid and an amino acid residue of the immobilized peptide. Amino acids may be activated using, e.g., a base and an activating agent. Certain inventive concepts, described herein, relate to methods and systems for the activation of amino acids. These systems and methods may allow for fewer side reactions and a higher yield compared to conventional activation techniques as well as the customization of the coupling reaction on a residue-by-residue basis without the need for costly and/or complex processes.