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Home > Biochemical Engineering > Polypeptide (Find 624 items)

Polypeptide

Polypeptides are vital biomolecules with broad applications in biology and industry. It is composed of amino acids linked by polypeptide bonds. These polypeptide chains form the backbone of most proteins and are key to cellular functions, enzyme regulation, and structural support. Their efficiency makes them valuable in biotechnology, medicine, and manufacturing. Learn more about polypeptides, including CAS No., properties, and information of materials and products from our suppliers on ECHEMI.

ALPHA-CGRP (8-37) (HUMAN)

(119911-68-1)
HCGRP-(8-37) is a human calcitonin gene-related peptide (hCGRP) fragment and also an antagonist of CGRP receptor. Sequence: Val-Thr-His-Arg-Leu-Ala-Gly-Leu-Leu-Ser-Arg-Ser-Gly-Gly-Val-Val-Lys-Asn-Asn-Phe-Val-Pro-Thr-Asn-Val-Gly-Ser-Lys-Ala-Phe.

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H-ARG-PRO-GLY-PRO-PRO-GLY-LEU-GLN-GLY-ARG-LEU-GLN-ARG-LEU-LEU-GLN-ALA-ASN-GLY-ASN-HIS-ALA-ALA-GLY-ILE-LEU-THR-MET-NH2

(202801-92-1)
Orexin B, rat, mouse is an endogenous agonist at Orexin receptor with Kis of 420 and 36 nM for OX1 and OX2, respectively.

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Exenatide Acetate

(141732-76-5)
Exenatide (i, INN, marketed as Byetta, Bydureon) is a glucagon-like peptide-1 agonist (GLP-1 agonist) medication, belonging to the group of incretin mimetics, approved in April 2005 for the treatment of diabetes mellitus type 2. Exenatide in its Byetta form is administered as a subcutaneous injection (under the skin) of the abdomen, thigh, or arm, any time within the 60 minutes before the first and last meal of the day. A once-weekly injection has been approved as of January 27, 2012 under the t

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PT-141

(189691-06-3)
Treatment of sexual dysfunction (melanocortin receptor agonist).

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CHLOROTOXIN

(163515-35-3)
Biochemical probe for voltage-gated chloride channels.

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CYS-TYR-ILE-GLN-ASN-CYS-PRO-ARG-GLY-NH2

(113-80-4)
ChEBI: A heterodetic cyclic peptide that is homologous to oxytocin and vasopressin. It is a pituitary hormone that acts as an endocrine regulator for water balance, osmotic homoeostasis and is involved in social and sexual behavior in non-mammalian vertebrates.

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Polypeptide is a compound formed by connecting α-amino acids with peptide bonds, and is an intermediate product of protein hydrolysis. Compounds usually formed by the dehydration and condensation of 10 to 100 amino acid molecules are called peptides. There are two types of peptides: biologically active peptides and synthetic peptides.

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Application of polypeptide

With recent advancements in biotechnology, polypeptides have found increasing use as therapeutic agents. They can serve in diagnostic, curative, and preventative applications and can be synthesized artificially to meet clinical demands.

Due to their unique properties, polypeptides combine the characteristics of both small molecule drugs and protein-based therapies, making them a highly researched class of molecules. Insulin, for example, was the first polypeptide drug introduced, and since then, over 80 polypeptide-based drugs have been commercialized. These include peptide vaccines, anti-cancer peptides, antiviral peptides, cardiovascular peptides, cytokine mimetic peptides, antimicrobial peptides, and diagnostic peptides.

One of the major advantages of polypeptide drugs is their reduced likelihood of inducing drug resistance. However, they also pose significant challenges, such as higher toxicity and lower stability compared to other drug types. The immunogenicity and instability of polypeptide drugs are often attributed to chemical reactions like deamidation, oxidation, hydrolysis, and the formation of incorrect structures.

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