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Amongst the following, the elongated, fibrous protein is
  • a)
    Myoglobin
  • b)
    Keratin
  • c)
    Albumin
  • d)
    Calmodulim
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Amongst the following, the elongated, fibrous protein isa)Myoglobinb)K...
Fibrous proteins, also called scleroproteins, are long filamentous protein molecules.[1]

Fibrous proteins are only found in animals.

Fibrous proteins form 'rod' or 'wire' -like shapes and are usually inert structural or storage proteins. They are generally water-insoluble. Fibrous proteins are usually used to construct connective tissues, tendons, bone and muscle fiber.

Examples of fibrous proteins include keratins, collagens and elastins.

Fingernails and claws are made up of the common fibrous proteins, Keratin.
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Amongst the following, the elongated, fibrous protein isa)Myoglobinb)K...
Understanding Elongated, Fibrous Proteins
Elongated, fibrous proteins are characterized by their structural form and function. These proteins typically serve structural roles in biological organisms and exhibit a high degree of tensile strength. Among the options provided, keratin is the best example of an elongated, fibrous protein.
Key Characteristics of Keratin:
- Structural Role: Keratin is primarily found in the outer layer of skin, hair, nails, and feathers. It provides strength and protection to these tissues.
- Fibrous Nature: The protein structure of keratin is long and fibrous, consisting of coiled coils that provide mechanical resilience and stability.
- Types of Keratin: There are two main types: alpha-keratin (found in mammals) and beta-keratin (found in birds and reptiles), both contributing to the protective qualities of skin and appendages.
Comparison with Other Options:
- Myoglobin: This protein is globular and serves as an oxygen-binding protein in muscle tissues, not fibrous.
- Albumin: A globular protein found in blood plasma, albumin plays a crucial role in maintaining osmotic pressure and transporting various substances, lacking the fibrous structure.
- Calmodulin: This is a calcium-binding messenger protein involved in various cellular processes. It also has a globular structure, not fibrous.
Conclusion:
In summary, keratin stands out among the options as the quintessential elongated, fibrous protein due to its structural role and elongated form, making it integral to various protective functions in organisms.
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Amongst the following, the elongated, fibrous protein isa)Myoglobinb)Keratinc)Albumind)CalmodulimCorrect answer is option 'B'. Can you explain this answer?
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