Describe the structures of proteins.

Proteins are made up of the primary structure, secondary structure and tertiary structure. Some proteins may also have a quaternary structure. The primary structure is the specific sequence of amino acids, peptide bonds join the amino acids together. The secondary structure is the folding is the primary structure into alpha helices and beta pleated sheets, these have peptide bonds, hydrogen bonds, ionic bonds and disulphide bridges. The tertiary structure is folding of the secondary structure into a 3D shape with peptide bonds, hydrogen bonds, ionic bonds, disulphide bridges and hydrophobic and hydrophilic interactions. The quaternary structure belongs to proteins with 2 or more peptide chains, they sometimes have a prosthetic group.

LO
Answered by Lucy O. Biology tutor

2375 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

What’s the difference between a prokaryotic and a eukaryotic cell?


Describe the process of DNA replication?


Describe the types of movement of substances across a partially permeable membrane


Outline the process of oxidative phosphorylation and its specificity to aerobic respirpation.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences