Protein Structure Flashcards
What is a biomacromolecule?
They are large molecules essential for cell structure and function
eg. Protiens, nucleic acids
Proteome Definiton
All the protiens expressed in a cell/organism at a time
What is a peptide?
Short chain of amino acids linked together by peptide bonds
like smaller, fewer than 50 amino acids
Whatis a polypeptide
A string of unfolded covalently bonded amino acids
What is a protien
A molecule consisting of a folded chain of amino acids.
What is in the structure of an Amino Acid
1.R group
2.Hydrogen atom
3.Amino group
4.Carboxyl group
How are polypeptides formed?
Via condensation reactions occuring between the carboxyl group of one amino acid and another amino acid’s hydrogen atom, creating H20 as a by product.
Is there any energy used when doing a condensation polymerisation?
Yes, when OH and H gets used
What are the 4 structures of a protien?
1.Primary Structure
2.Secondary Structure
3.Tertiary structure
4.Quatenary strucutre
What are the two common types of ways a polypeptide chain folds in a second structure
Alpha Helix and Beta Pleated sheets
What is a primary structure
A basic linear sequence of amino acids in a polypeptide chain.
Secondary Structure
The polypeptide chain folds and coils due to the hydrogen bonds between near amino acids forming alpha helixs, beta pleated sheets and random coils.
WHAT IS A random coil
It is the part where it basically isnt alpha helix or beta pleated sheet.
Tertiary structure
This is when the protien is now functional and is folded into a 3d structure from side to side interactions in the different R groups from amino acids
Quatenary structures
When two or more polypeptide chains are joined together or when a prostetic group is added to the polypeptide to make it a fully funcational protien
