BIOLOGY
PROTEINS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Tertiary structure has double bond whereas quartenary structure does not have double bond
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Tertiary structure consists of one polypeptide chain whereas quartenary structure consists of more than one polypeptide chains
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Tertiary structure is fibrous whereas quartenary structure is globular
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Tertiary structure is water-soluble whereas quartenary structure is lipid soluble
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Detailed explanation-1: -Tertiary structure refers to the configuration of a protein subunit in three-dimensional space, while quaternary structure refers to the relationships of the four subunits of hemoglobin to each other.
Detailed explanation-2: -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.
Detailed explanation-3: -Quaternary structure exists in proteins consisting of two or more identical or different polypeptide chains (subunits). These proteins are called oligomers because they have two or more subunits. The quaternary structure describes the manner in which subunits are arranged in the native protein.
Detailed explanation-4: -By definition, only multimeric proteins have quaternary structure; it refers to the arrangement of two or more folded polypeptide chains. The interactions stabilizing protein quaternary structure may be covalent or noncovalent.
Detailed explanation-5: -The tertiary structure only contains one polypeptide chain that has been folded and twisted on itself.