Proteins Flashcards
(16 cards)
How many type of amino acid are present in proteins?
There are 20 different types of amino acid present in proteins
Glycine
The simplest type of Amino acid
Different type of Amino acid based on
R groups present
Dipeptides
2 amino acids combined by a peptide linkage
Polypeptide
Many amino acids combined together by a peptide bond
R group
An alkyl group
When you remove an ‘H’ bond from an alkane group
Functions of a protein
Catalyst
- used to speed up chemical reactions
Support
- provide structural support
Transport substances across the membrane
Hormones
- regulating cellular processes
Defense
- providing defence from diseases
Levels of organization in proteins
Primary
Secondary
Tertiary
Quaternary
Primary
Linear
Secondary
Hydrogen bonding contributes to alpha helix or beta pleated structure
Tertiary
Folding of peptide chain
Quaternary
Multiple polypeptide ion
What’s the bond for proteins
Peptide bond
What’s Denaturation
Denaturation occurs when the bonding between R groups is disturbed and intermolecular bonds break, potentially affecting the secondary, tertiary, and quaternary structures. Once a protein loses its normal three-dimensional shape, it can no longer perform its usual functions
Protein monomer
Amino acids
Why does desaturation happen
High or low temperature
Too acidic
Exposure to radiation and chemicals
