Flashcards in Session 5: Protein Structure and Function Deck (16):
Proteins are _________ made up of ________ ______________
Amino acids are joined covalently by what bonds to give the sequence of the protein?
The amino acid sequence of a peptide is encoded by what?
The ____________ sequence of a gene determines the amino acid sequence of a protein
Polypeptide chain folds into a complex and highly specific 3D structure determined by what?
The sequence of amino acids
What is the process by which RNA is produced from DNA?
What is the process by which RNA is used to create proteins?
What are the general structural features of all amino acids?
An amino group
A carboxyl group
A central carbon atom
A hydrogen atom
A side chain that differs between amino acids (R group)
Amino acids are classified based on what?
The chemical and physical properties of the R group
What do we call amino acids that are joined together and have therefore lost their amino and hydroxyl groups?
Amino acid residues
Acid-base behaviour of amino acids is determined by what?
The R group
What is an amino acid residue?
What remains of an amino acid after it has been joined by a peptide bone to form a protein
What does the pKa of an acid tel us?
How likely an acid is to ionise
The lower the pKa the.....
more likely it is to lose a proton (act as an acid)
The higher the pKa the........
more likely it is to gain a proton (act as a base)