-
Denaturation destroys
2o, 3o, and 4o structure. (1o structure remains intact)
-
What is denaturation
the disruption of disulfide bonds, hydrogen bonds, and other weak interactions, having an unfolded protein leaving the primary structure intact.
-
Denatured proteins always retain what structure
their primary structure
-
Can a protein partially re-fold onto something that doesn't resemble its starting material.
Yes
-
Protein albumin found in egg whites can be denatured by heat or
mechanical action (whipping). Denaturation changes the properties of the protein.
-
Types of protein
- Structural
- Regulatory
- Contractile
- Immunological
- Transport
- Catalytic
-
What is Structural proteins function
Form structural framework of various parts of the body.
Example: collagen in bone and other connective tissues, and keratin in skin, hair, and fingernails.
-
What is Regulatory protein function
Function as hormones that regulate various physiological processes; control growth and development; as neurotransmitters, mediate responses of the nervous system.
Example: the hormone onsulin, which regulates blood gucose level, and a neurotransmitter known as substance P, which mediates sensation of pain in the nervous system.
-
What is contractile protein function
Allow shortening of muscle cells, which produces movement.
-
What is immunological protein function
Aid responses that protect body against foreign substances and invading pathogens.
Example: antibodies and interleukins.
-
What is transport protein function
Carry vital substances throughout the body.
Example: hemoglobin, which transports most oxygen and some carbon dioxide in the blood.
-
What is Catalytic protein function
Act as enzymes that regulate biochemical reactions.
Examples: salivary amylase, sucrase, and ATPase.
-
Define an enzyme
are proteins that speed up (catalyze) chemical reactions.
-
A typical human cell carries out tens of thousands of metabolic processes. Each of these reactions is speeded along by an
enzyme of one sory or another
-
Enzymes don't change the overall energy that comes out of the reaction. They change
activation energy, but not the overall energy profile.
-
Enzymes are catalysts.
Catalysts make reactions go faster but are not consumed.
Enzymes bring together the reaction products.
-
Molecules fit into a pocket formed by the
enzyme protein
-
Substrate name + -ase =
enzyme name
|
|