Which amino acid is present in highest concentration in actin? | Agrigyan

Q.54

Livestock Production Management- ICAR JRF/SRF 2024

MCQ (Single Correct)

Which amino acid is present in highest concentration in actin?

Proline Hydroxy proline Glycine Correct Desmosin

Actin Polypeptide Composition:
Actin is an abundant, highly conserved eukaryotic myofibrillar contractile protein (molecular weight $\approx 42\text{ kDa}$, 375 amino acid residues).
Primary sequence analysis shows that small, flexible amino acid residues are highly represented to support globular folding (G-actin) and polymerization into microfilaments (F-actin), with Glycine occurring in exceptionally high concentration (over 28 residues, $\approx 7.5\%$ of total amino acids).
nalysis:
(Glycine): Correct.

Correct option: (3) Glycine

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