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Which of the following is correct about the higher order structures of collagen and keratin
  • a)
    Each collagen molecule is right handed helix, three such helices twist in left handed manner
  • b)
    Each collagen molecule is left handed helix, three such helices twist in right handed manner
  • c)
    Each keratin molecule is a right handed helix, two such keratin molecules twist over each other in left handed manner.
  • d)
    Each keratin molecule is a left handed helix, two such keratin molecules twist over each other in right handed manner.
Correct answer is option 'B,C'. Can you explain this answer?
Verified Answer
Which of the following is correct about the higher order structures of...
Statement b and c are correct (refer standard biochemistry books for structures)
Collagen comprises of right handed bundle of three left handed helics. The polypeptide chains in collagen are left handed. Three helical strands wrap together into a repeatedly superhelical structure called tropocollagen. The superhelical twisting in tropocollagen is right handed. The polypeptide chains in keratin are right handed. Three helical strands wrap together in a super helical structure called protofibril. The superhelical twisting in proto fibril is left handed. 
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Which of the following is correct about the higher order structures of collagen and keratina)Each collagen molecule is right handed helix, three such helices twist in left handed mannerb)Each collagen molecule is left handed helix, three such helices twist in right handed mannerc)Each keratin molecule is a right handed helix, two such keratin molecules twist over each other in left handed manner.d)Each keratin molecule is a left handed helix, two such keratin molecules twist over each other in right handed manner.Correct answer is option 'B,C'. Can you explain this answer?
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Which of the following is correct about the higher order structures of collagen and keratina)Each collagen molecule is right handed helix, three such helices twist in left handed mannerb)Each collagen molecule is left handed helix, three such helices twist in right handed mannerc)Each keratin molecule is a right handed helix, two such keratin molecules twist over each other in left handed manner.d)Each keratin molecule is a left handed helix, two such keratin molecules twist over each other in right handed manner.Correct answer is option 'B,C'. Can you explain this answer? for IIT JAM 2024 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about Which of the following is correct about the higher order structures of collagen and keratina)Each collagen molecule is right handed helix, three such helices twist in left handed mannerb)Each collagen molecule is left handed helix, three such helices twist in right handed mannerc)Each keratin molecule is a right handed helix, two such keratin molecules twist over each other in left handed manner.d)Each keratin molecule is a left handed helix, two such keratin molecules twist over each other in right handed manner.Correct answer is option 'B,C'. Can you explain this answer? covers all topics & solutions for IIT JAM 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is correct about the higher order structures of collagen and keratina)Each collagen molecule is right handed helix, three such helices twist in left handed mannerb)Each collagen molecule is left handed helix, three such helices twist in right handed mannerc)Each keratin molecule is a right handed helix, two such keratin molecules twist over each other in left handed manner.d)Each keratin molecule is a left handed helix, two such keratin molecules twist over each other in right handed manner.Correct answer is option 'B,C'. Can you explain this answer?.
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