We can consider the peptide bond as the key structure of all proteins. The peptide bond gives to the protein the proper configuration in order to its biological activity or significance.
amino acids form protein.
protein molecules in the cell membrane gives the mosaic structure .
Amino acids.
Protein is very high in calsium. It will easily change to level 87
The active form of insulin, in the body, is a tertiary protein structure. However, when stored in the body, several insulin molecules are bound together in a hexamer (a six-protein quaternary structure).
nucleic acids and protein
A semipermeable membrane
Golgi apparatus
The DNA sequence will determine the amino acid sequence known as the protein's primary structure. As the protein is folded into the secondary, tertiary and quatranary structures, the amino acid molecules will determine the shape
Small non-polar molecules may pass through a a semipermeable membrane but others require a protein channel.
Carboxyl group + amino group + side chain
Prions have the ability to transform normal, benign protein molecules into infectious, deadly ones by altering their structure.