Two proteins are said to be homologous if they: A. Have the same function in dif

Question

Two proteins are said to be homologous if they:

A. Have the same function in different organisms
B. Share a significant degree of sequence similarity
C. Share a significant degree of sequence similarity but have completely different functions in different organisms
D. Share a common tertiary structure fold but have little sequence homology
E. Share a significant degree of structural similarity but have completely different functions in different organisms

Which of the above statements are true?

Explanation / Answer

The homologous proteins have a common ancestor and they have same function in different organisms. The homologous proteins share a significant degree of sequence similarity and structural resemblance. Thus, all the statements are correct except D.

Hence, the correct option is "All except D".

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