NDLI: Is positive selection responsible for the evolution of a duplicate UV-sensitive opsin gene in Heliconius butterflies?

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Is positive selection responsible for the evolution of a duplicate UV-sensitive opsin gene in Heliconius butterflies?

Content Provider	Semantic Scholar
Author	Nozawa, Masafumi Suzuki, Yoshiyuki Nei, Masatoshi
Copyright Year	2010
Abstract	In PNAS, Briscoe et al. (1) discovered that Heliconius butterflies have two duplicate copies (UVRh1 and UVRh2) of the UV-sensitive gene, and they statistically inferred that the UVRh2 gene was subjected to positive selection in the evolutionary lineage immediately after the gene duplication. Using the branch-site (BS) method of Bayesian statistical inference (2), they identified 28 amino acid sites at which positive selection potentially operated. They speculated that the amino acid substitutions at these sites were important in shifting the maximum absorption wavelength (λmax), because 4 of 28 sites corresponded to the sites in vertebrate color-vision opsins at which amino acid substitutions were shown to change λmax experimentally.
File Format	PDF HTM / HTML
DOI	10.1073/pnas.1003657107
PubMed reference number	20457891
Journal	Medline
Volume Number	107
Issue Number	23
Alternate Webpage(s)	http://visiongene.bio.uci.edu/Adriana_Briscoe/Publications_files/E96.full.pdf
Alternate Webpage(s)	http://igem.temple.edu/labs/nei/downloads/publications/2010%20Publications/NozawaSuzukiNei-PNAS.pdf
Journal	Proceedings of the National Academy of Sciences of the United States of America
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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