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

A & B

Two proteins are homologous if they have a common ancestor. This means that they should have high sequence identity and show similar functions in different organisms.

A & B

Two proteins are homologous if they have a common ancestor. This means that they should have high sequence identity and show similar functions in different organisms.

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