BIOLOGY
PROTEINS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Extends the 20 standard AA to over 300
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Promotes protein folding
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Helps to stabilize folded proteins
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Makes proteins more varied by adding other non-protein molecules
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All the above
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Detailed explanation-1: -Post-translational modifications (PTMs) of proteins enable fast modulation of protein function in response to metabolic and environmental changes. Phosphorylation is known to play a major role in regulating distribution of light energy between the Photosystems (PS) I and II (state transitions) and in PSII repair cycle.
Detailed explanation-2: -Beyond alternative splicing of mRNA as a source of protein diversity, post-translational modifications (PTMs) of proteins further modulate and extend the range of possible protein functions by covalently attaching small chemical moieties to selected amino acid residues.
Detailed explanation-3: -Explanation: Post translational modifications include three types of modification that is proteolysis, glycosylation and lipid addition.
Detailed explanation-4: -Post-translational modifications (PTMs) are widely used by eukaryotes to control quickly, locally and specifically the enzymatic activity, localization or stability of their proteins, and thus to fine-tune key factors of the cellular biology to environmental changes.