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Could you help me about finding two different proteins that coming from different ancestors, perform same function?

Thank you

Ali G
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There will be a lot! Chromosomal dihydrofolate reductase and type II (plasmid) dihydrofolate reductase have not been derived from common ancestor but catalyze completely the same reaction including stereochemistry by the authority of Brito.

Bacterial phenylalanine hydroxylase too is completely different in sequence of amino acids from phenylalanine hydroxylase from mammals (where plants have no such protin). The literature shows this paper Cloning and nucleotide sequencing of phenylalanine dehydrogenase gene of Bacillus sphaericus.

alina
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