{"title":"环境对酪氨酸紫外吸收光谱的影响","authors":"H. Grinspan, J. Birnbaum, J. Feitelson","doi":"10.1016/0926-6585(66)90031-8","DOIUrl":null,"url":null,"abstract":"<div><p>The influence of a variety of mono- and polybasic alcohols, ethers and acids on the electronic absorption spectrum of tyrosine in aqueous solution was investigated.</p><p>A shift towards longer wavelength in the first (<span><math><mtext>L</mtext><msub><mi></mi><mn>b</mn></msub></math></span>) and the second (<span><math><mtext>L</mtext><msub><mi></mi><mn>a</mn></msub></math></span>) band is observed as a function of solvent composition. The results are compared with those obtained for phenylalanine in similar solvent systems. It is found that the effects can be discussed in terms of hydrogen bond formation between tyrosine, acting as proton donor, and the various solvent components as proton acceptors. It is suggested that the changes in spectral properties due to hydrogen bonding may be attributed to a modification in the substituent effect of the hydroxyl group on the spectrum of the aromatic system.</p><p>The implications of these effects in polypeptide conformation studies are briefly mentioned.</p></div>","PeriodicalId":100158,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Biophysics including Photosynthesis","volume":"126 1","pages":"Pages 13-18"},"PeriodicalIF":0.0000,"publicationDate":"1966-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0926-6585(66)90031-8","citationCount":"16","resultStr":"{\"title\":\"Environmental effects on the ultraviolet absorption spectrum of tyrosine\",\"authors\":\"H. Grinspan, J. Birnbaum, J. Feitelson\",\"doi\":\"10.1016/0926-6585(66)90031-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The influence of a variety of mono- and polybasic alcohols, ethers and acids on the electronic absorption spectrum of tyrosine in aqueous solution was investigated.</p><p>A shift towards longer wavelength in the first (<span><math><mtext>L</mtext><msub><mi></mi><mn>b</mn></msub></math></span>) and the second (<span><math><mtext>L</mtext><msub><mi></mi><mn>a</mn></msub></math></span>) band is observed as a function of solvent composition. The results are compared with those obtained for phenylalanine in similar solvent systems. It is found that the effects can be discussed in terms of hydrogen bond formation between tyrosine, acting as proton donor, and the various solvent components as proton acceptors. It is suggested that the changes in spectral properties due to hydrogen bonding may be attributed to a modification in the substituent effect of the hydroxyl group on the spectrum of the aromatic system.</p><p>The implications of these effects in polypeptide conformation studies are briefly mentioned.</p></div>\",\"PeriodicalId\":100158,\"journal\":{\"name\":\"Biochimica et Biophysica Acta (BBA) - Biophysics including Photosynthesis\",\"volume\":\"126 1\",\"pages\":\"Pages 13-18\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1966-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0926-6585(66)90031-8\",\"citationCount\":\"16\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Biochimica et Biophysica Acta (BBA) - Biophysics including Photosynthesis\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0926658566900318\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biochimica et Biophysica Acta (BBA) - Biophysics including Photosynthesis","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0926658566900318","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Environmental effects on the ultraviolet absorption spectrum of tyrosine
The influence of a variety of mono- and polybasic alcohols, ethers and acids on the electronic absorption spectrum of tyrosine in aqueous solution was investigated.
A shift towards longer wavelength in the first () and the second () band is observed as a function of solvent composition. The results are compared with those obtained for phenylalanine in similar solvent systems. It is found that the effects can be discussed in terms of hydrogen bond formation between tyrosine, acting as proton donor, and the various solvent components as proton acceptors. It is suggested that the changes in spectral properties due to hydrogen bonding may be attributed to a modification in the substituent effect of the hydroxyl group on the spectrum of the aromatic system.
The implications of these effects in polypeptide conformation studies are briefly mentioned.
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