definition
Any polymer of (same or different) amino acids joined via peptide bonds.
definition
Any such polymer that is not folded into a secondary structure of a protein.
definition
A small protein containing up to 100 amino acids; see also oligopeptide.
Do copper ions break down the ionic bonds between the polypeptide chains of egg albumen - thus causing it to denature?
The most significant chromophore for proteins is the amide group of the polypeptide backbone.
The geometry of the polypeptide hydrogen bonds involving the peptide backbone atoms were also analyzed and shown to be fairly independent of sidechain influences.
Proteins are composed of complex polypeptide chains with unique 3-dimensional structures.
In the molecule above, the two peptides have joined together to form a dipeptide; many peptides join together to form a polypeptide.
This report documents that islet cell tumors may function by secreting pancreatic polypeptide but not cause symptoms.
In contrast, staining of the tumor for pancreatic polypeptide was strongly positive.
Serine Protease In the diagram above a small peptide is shown being cleaved, while the usual substrate would be a larger polypeptide.
It is initially synthesized as a 76 kDa polypeptide using host cell transcription and translation machinery.
The polypeptide chains synthesized by the ribosomes bound to the rough E.R. enter the endoplasmic reticulum lumen.
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