{"title":"Structure and Modifications of Pseudomurein in Methano-bacleriales","authors":"Helmut König , Ricarda Kralik, Otto Kandler","doi":"10.1016/S0721-9571(82)80031-8","DOIUrl":null,"url":null,"abstract":"<div><p>Pseudomurein, the cell wall polymer found in all species of the order <em>Methanobacteriales</em>, is composed of glycan strands cross-linked by peptide subunits. The glycan strands are composed of alternating N-acetyl-D-glucosamine or N-acetyl-D-galactosamine and N-acetyl-D-talosaminuronic acid residues in <em>β</em>-1.3-linkage. In most species the cross-linking peptide subunits consist of alanine, glutamic acid and lysine. However, alanine is completely or partly replaced by threonine in <em>Methanobrevibacter ruminantium</em>. In <em>Methano-brevibacter smithii</em> ornithine was found as an additional amino acid residue attached by its (<em>δ</em>-amino group to the <em>α</em>-carboxyl group of the terminal glutamyl residue.</p></div>","PeriodicalId":101290,"journal":{"name":"Zentralblatt für Bakteriologie Mikrobiologie und Hygiene: I. Abt. Originale C: Allgemeine, angewandte und ?kologische Mikrobiologie","volume":"3 2","pages":"Pages 179-191"},"PeriodicalIF":0.0000,"publicationDate":"1982-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0721-9571(82)80031-8","citationCount":"11","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zentralblatt für Bakteriologie Mikrobiologie und Hygiene: I. Abt. Originale C: Allgemeine, angewandte und ?kologische Mikrobiologie","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0721957182800318","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 11
Abstract
Pseudomurein, the cell wall polymer found in all species of the order Methanobacteriales, is composed of glycan strands cross-linked by peptide subunits. The glycan strands are composed of alternating N-acetyl-D-glucosamine or N-acetyl-D-galactosamine and N-acetyl-D-talosaminuronic acid residues in β-1.3-linkage. In most species the cross-linking peptide subunits consist of alanine, glutamic acid and lysine. However, alanine is completely or partly replaced by threonine in Methanobrevibacter ruminantium. In Methano-brevibacter smithii ornithine was found as an additional amino acid residue attached by its (δ-amino group to the α-carboxyl group of the terminal glutamyl residue.
假尿素是一种细胞壁聚合物，存在于所有甲烷菌目细菌中，它是由肽亚基交联的聚糖链组成的。糖链由n -乙酰- d -葡萄糖胺或n -乙酰- d -半乳糖胺和n -乙酰- d -talosaminuronic acid残基在β-1.3链上交替组成。在大多数物种中，交联肽亚基由丙氨酸、谷氨酸和赖氨酸组成。反刍甲烷菌中丙氨酸完全或部分被苏氨酸取代。鸟氨酸是在史密斯甲烷短杆菌末端谷氨酰残基α-羧基上附加的(δ-氨基)氨基酸残基。
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