Polypeptide in a sentence

Cleavage of polyproteins Some proteins and most eukaryotic polypeptide hormones are synthesized as a large precursor polypeptide known as a polyprotein that requires proteolytic cleavage into individual smaller polypeptide chains.

This polypeptide is subsequently cleaved into individual polypeptide chains.

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Insulin is a polypeptide used in the maintenance of blood glucose levels and the management of diabetes.

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A β-strand is a stretch of polypeptide chain typically 3 to 10 amino acids long with backbone in an extended conformation.

Being bored, he drew a polypeptide chain of roughly correct dimensions on a strip of paper and folded it into a helix, being careful to maintain the planar peptide bonds.

Biological functions Post-translational proteolytic processing Limited proteolysis of a polypeptide during or after translation in protein synthesis often occurs for many proteins.

Crystallographic work has shown that there are no ribosomal proteins close to the reaction site for polypeptide synthesis.

He found that, as they dried, the amino acids formed long, often cross-linked, thread-like microscopic polypeptide globules, he named "proteinoid microspheres".

Hydrogen bonds stabilize the helical sections inside this protein, causing attractions within the molecule, folding each polypeptide chain into a specific shape.

In general, short polypeptides do not exhibit much α-helical structure in solution, since the entropic cost associated with the folding of the polypeptide chain is not compensated for by a sufficient amount of stabilizing interactions.

In Mycobacterium tuberculosis, the AC-III polypeptide is only half as long, comprising one 6-transmembrane domain followed by a cytoplasmic domain, but two of these form a functional homodimer that resembles the mammalian architecture.

Inside the cell, disulfide bridges between cysteine residues within a polypeptide support the protein's tertiary structure.

Insulin consists of two polypeptide chains, the A- and B- chains, linked together by disulfide bonds.

It includes organisations from simple dimers to large homooligomers and complexes with defined or variable numbers of subunits. citation Description and examples Many proteins are actually assemblies of multiple polypeptide chains.

It is attached to the polypeptide C-terminus through an amide linkage that then connects to ethanolamine, thence to sundry sugars and finally to the phosphatidylinositol lipid moiety.

Many viruses also produce their proteins initially as a single polypeptide chain that were translated from a polycistronic mRNA.

Monocistronic versus polycistronic mRNA seeAlso An mRNA molecule is said to be monocistronic when it contains the genetic information to translate only a single protein chain (polypeptide).

Phosphorylation helps many proteins bind the polypeptide, keeping it from folding prematurely.