LABORATORY REVIEW
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Each individual has a unique proteome
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They can be folded into different three dimensional shapes
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They are made of amino acids which are amphoteric
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They contain the element nitrogen
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Detailed explanation-1: -Protein tertiary structure is the three dimensional shape of a protein. The tertiary structure will have a single polypeptide chain “backbone” with one or more protein secondary structures, the protein domains. Amino acid side chains may interact and bond in a number of ways.
Detailed explanation-2: -The ability to make so many diverse proteins comes from amino acids. There are 20 different amino acid possibilities for each position in the protein chain. Over a long protein, this creates a nearly infinite combination of possibilities.
Detailed explanation-3: -Proteins are made up of lots of little building blocks called amino acids. The exact 3-D shape of the protein depends which amino acids it’s made of and how they’re put together. When a protein bends and twists to form its 3-D shape, this is called protein folding.
Detailed explanation-4: -The amino acid sequence of a protein determines its 3D structure. Folding of proteins into their correct native structure is key to their function. Failure to fold properly produces inactive or toxic proteins that malfunction and cause a number of diseases.