Unusual Polyamines from Baikalian Diatoms,ChemistrySelect

当前位置： X-MOL 学术 › ChemistrySelect › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Unusual Polyamines from Baikalian Diatoms
ChemistrySelect ( IF 1.9 ) Pub Date : 2018-09-06 , DOI: 10.1002/slct.201802032
Vadim V. Annenkov ₁ , Ol'ga N. Verkhozina ₁ , Stanislav N. Zelinskiy ₁ , Tatyana A. Shishlyannikova ₁ , Maxime C. Bridoux ₂ , Elena N. Danilovtseva ₁

Affiliation

Siliceous frustules of diatom algae contain a low amount of organic substances which are buried in the silicon dioxide and remain intact after a thousands years in marine and lake sediments. These substances are studied as potential silicification agents which are responsible for formation of the biosilica. On the other hand, the organic compounds from sediments are a prospective source of carbon and nitrogen for isotopic paleoreconstructions. The main part of these compounds from marine diatoms consists of polyamines which contain trimethylene insertions between nitrogen atoms. The study of polyamines from siliceous frustules of Baikalian diatom Stephanodiscus meyeri Genkal & Popovskaya revealed the presence of a new type of polyamine that contains tetramethylene insertions between nitrogen atoms in the repeating units. The other freshwater diatom Ulnaria ferefusiformis Kulikovskiy & Lange‐Bertalot contained polyamines with trimethylene insertions similar to those in the previously‐studied marine diatoms and the Baikal sediments contained polyamines of both types. These results are important to understanding the role of polyamines in silica biosynthesis. The species specificity of the polyamine structure can be applied as a new paleo marker.

中文翻译：

Baikalian硅藻中不寻常的多胺

硅藻藻类的硅质壳层含有少量有机物，这些有机物被埋在二氧化硅中，并且在海洋和湖泊沉积物中经过数千年后仍保持完好无损。研究了这些物质作为潜在的硅化剂，它们负责形成生物二氧化硅。另一方面，来自沉积物的有机化合物是同位素古构造物的碳和氮的潜在来源。这些来自海洋硅藻的化合物的主要部分由多胺组成，这些多胺在氮原子之间包含三亚甲基插入物。百加得硅藻Stephanodiscus meyeri硅质壳中多胺的研究Genkal＆Popovskaya揭示了一种新型多胺的存在，该多胺在重复单元的氮原子之间包含四亚甲基插入。其他淡水硅藻Ulnaria ferefusiformis Kulikovskiy和Lange-Bertalot含有多亚甲基插入的多胺，类似于先前研究的海洋硅藻中的那些，贝加尔湖沉积物中含有两种类型的多胺。这些结果对于理解聚胺在二氧化硅生物合成中的作用非常重要。多胺结构的物种特异性可以用作新的古标记。

更新日期：2018-09-06

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南