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| The Presence of D-Alanine in Phascolosoma Arcuatum (Sipuncula) | |
| 作者姓名： | W.T.Ong W.P.Low Y.K.Ip |
| 作者单位： | DepartmentofZoology，NationalUniversityofSingapore，DepartmentofZoology，NationalUniversityofSingapore，DepartmentofZoology，NationalUniversityofSingapore |
| 摘 要： | D-Aminoacidsareusuallyviewedasunnaturalisomers.Theyoccuronlyoccasionallyinsizablequantities1].InPhascolosomaarcuatum,freealanineaccumulatewhenexposedtoenvironmentalstress.Whentheconcentrationofthisaminoacidwastestedusingenzymaticmethods,2]onlyapproximatelyhalfthetotalamountofalaninedeterminedusinghighpressureliquidchromatography'1wasaccoountedfor.WesuspectthatD-alaninemustbepresentinP.arcuatumataratherhighlevelasD-alaninecouldnotbedetectedbythestandardenzpoaticanalysis,whichisstereospecif… |
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