SECONDARY STRUCTURE Flashcards
1
Q
WHAT BOND IS FORMED DURING THE SECONDARY STRUCTURE?
A
HYDROGEN BONDS
2
Q
WHAT IS THE SECONDARY STRUCTURE?
A
ALPHA HELIX + BETA PLEATED SHEETS
3
Q
WHAT ARE ALPHA HELIX AND BETA PLEATED SHEETS CAUSED BY?
A
HYDROGEN BONDS BETWEEN N IN AMINE GROUPS + O IN CARBOXYL GROUPS OF DIFFERENT AMINO ACIDS
4
Q
WHY DOES THE STRUCTURE HAVE TO CORRECT?
A
PRIMARY STRUCTURE = TOO BIG + INCORRECT SHAPE TO FUNCTION
5
Q
WHEN DO ALPHA HELIX SHAPES FORM?
A
WHEN THE HYDROGEN BONDS FORM BETWEEN EVERY FOURTH PEPTIDE BOND
6
Q
WHEN DO BETA PLEATED SHEETS FORM?
A
WHEN THE PROTEIN FOLDS SO THAT TWO PARTS OF THE POLYPEPTIDE CHAIN ARE PARALLEL TO EACH OTHER (ENABLES HYDROGEN BONDS TO FORM BETWEEN PARALLEL PEPTIDE BONDS)
7
Q
HOW CAN THESE HYDROGEN BONDS BE BROKEN?
A
HIGH TEMPERATURES + pH CHANGES
