Q
how many amino acids does keratin have
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Keratin, a structural protein that forms hair, nails, and the outer layer of skin, is rich in the amino acid cysteine. It doesn't have a fixed number of amino acids because it comprises several types, each with its unique sequence. Typically, keratins are fibrous proteins formed from long chains of amino acids—these chains range in length, meaning the total number of amino acids in keratin can vary widely depending on the specific keratin type and its role in the body. However, a common feature across these types is a high proportion of cysteine, which allows the formation of disulfide bonds that contribute to the strength and resilience of keratin structures. So, while it's difficult to pinpoint an exact number of amino acids in keratin, the important takeaway is its diversity and the critical role cysteine plays.
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