Question

Explain in detail :-

♣ What is the smallest protien in humans ?? What is it's molecular weight and function ??

♣ Example of one receptor protein and it's function ??

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Answer 1

Explanation:

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♣ What is the smallest protien in humans ?? What is it's molecular weight and function ??

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ACTH is secreted by the anterior lobe of the pituitary gland and causes the increased production and release of cortisol by the cortex of adrenal gland. It is a polypeptide hormone which is made up of 39 amino acids and has the molecular weight of 4540 daltons.

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Example of one receptor protein and it's function ??

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A receptor is a cell present in the sense organs that is sensitive to specific stimuli. Example: The eyes have light receptors which can detect light and the ears have sound receptors which can detect sound.

Answer 2

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♣ The smallest human protein is 44 amino acids but it could be an abortive translation from the 5' UTR of another mRNA. The smallest functional polypeptide is glutathione with only three amino acids.

♣ Receptors are generally transmembrane proteins, which bind to signaling molecules outside the cell and subsequently transmit the signal through a sequence of molecular switches to internal signaling pathways.