{"refrec":{"BRefID":261207,"RR":"<b>Porter, M.L.; Roberts, N.W.; Partridge, J.C.</b> (2016). Evolution under pressure and the adaptation of visual pigment compressibility in deep-sea environments. <i>Mol. Phylogenet. Evol. 105</i>: 160-165. <a href=\"https://dx.doi.org/10.1016/j.ympev.2016.08.007\" target=\"_blank\">https://dx.doi.org/10.1016/j.ympev.2016.08.007</a>","BEntID":253225,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Mol. Phylogenet. Evol. 105</i>: 160-165. <a href=\"https://dx.doi.org/10.1016/j.ympev.2016.08.007\" target=\"_blank\">https://dx.doi.org/10.1016/j.ympev.2016.08.007</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Porter, M.L.; Roberts, N.W.; Partridge, J.C.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Porter, M.L. <i>et al.</i>","Englishabstract":"Understanding the link between how proteins function in animals that live in extreme environments and selection on specific properties of amino acids has proved extremely challenging. Here we present the discovery of how the compressibility of opsin proteins in two evolutionarily distinct animal groups, teleosts and cephalopods, appears to be adapted to the high-pressure environment of the deep-sea. We report how in both groups, opsins in deeper living species are calculated to be less compressible. This is largely due to a common set of amino acid sites (bovRH#159, 196, 213, 275) undergoing positive destabilizing selection in six of the twelve amino acid physiochemical properties that determine protein compressibility. This suggests a common evolutionary mechanism to reduce the adiabatic compressibility of opsin proteins. 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