Chapter 1 - Part 4: Proteins Flashcards
What do all proteins have in their same basic structure
CHONS(P)
Do all amino acids have a common structure?
Yes, it is,
Amine, Hydrogen, Carboxyl group and an R group
What are essential amino acids?
Amino acids that can not be manufactured by our body
What is a polypeptide?
A polypeptide chain is formed when amino acids are linked together via peptide bonds to form long chains
What is the process of joining amino acids?
Condensation
What determines a protein shape?
Is dependent upon the proteins amino acid sequence
The ‘R’ group react and interact with each other differently, these determine the final shape
What are the 4 levels of structure in proteins?
Primary
Secondary
Tertiary
Quaternary
Definition of primary structure
The sequence of amino acids in a polypeptide chain
Definition Secondary structure
The shape of the polypeptide chain caused by the folding and coiling (alpha helix, beta pleated sheets, random coils)
Definition Tertiary structure
The overall 3D shake of the polypeptide held together by iconic bonds or hydrogen bonds or interaction between amino acid R groups
Definition Quaternary structure
2 or more polypeptide chains joined to form a functional protein
What is protein denaturation?
Refers to there loss of a proteins 3D structure occurring because of the alteration of bonds
What is the opposite of denaturation
De-maturation
What are proteins?
Macromolecules consisting of many amino acids linked together as polypeptide chains
