Biology Questions and Answers
The tertiary protein structure is a spatial
conformation secondary structuradditionale in which th to the (^) e alpha-
helix or the beta-sheet folds itself up.
The forces that keep the tertiarystructure generally are interactions (^)
between the –R groups of the amino
acids anprotein and water md between other parts oolecules of thef the
solution.
The main typproteins are the globular pres of tertiary structure ooteins andf
the fibrous proteins.
- What is the quaternary
structure of a protein? Do all
proteins have quaternary
structure?
The quaternary protein structure is the
spatial conamong polypeptide cformation dhains that form theue to interactions (^)
protein.
Only those proteins made of two or
more polypeptide chains hquaternary structure. Insulin (twoave (^)
chains), hemoglobin (four chains) and
the immuchains) are somnoglobulins (antiboe examples odies, fourf protein
having quaternary structure.
- What is protein
denaturation? Is there any
change in the primary
structure when a protein is
denatured?
Secondary, structures otertiaryf proteins are spatial and quaternary
structures. Denaturation is modification
in any of these spatial structures thatmakes the protein deficient or
biologically inactive.
After denaturatiostructure is not affected.n the primary protein- How can denaturation be
classified regarding its
reversibility?
Protein denaturation can be a reversible
or an irreversible pbe possible or impossible to makrocess, i.e., it maye the (^)
protein regain its original spatial
conformation.
- What are some factors
that can lead to protein
denaturation?
Protein denaturation can be caused by
temperatuchanges in the concentration ore variation, pH change,f
surrounding solutes and by other
processes. Mcertain elevation ost proteins denature afterof temperature or
when in very acid or very basic
solutioreasons that it isns. This is on necessary for thee of the main (^)
organisms to kand pH. eep stable temperature
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