MODEL FOR STRUCTURE OF SHAPE-MAINTAINING LAYER OF ESCHERICHIA-COLI CELL ENVELOPE
MODEL FOR STRUCTURE OF SHAPE-MAINTAINING LAYER OF ESCHERICHIA-COLI CELL ENVELOPE
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DOI：
10.1128/jb.114.3.1264-1270.1973
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发表时间：
1973-01-01
影响因子：
3.2
通讯作者：
REHN, K
中科院分区：
文献类型：
--
作者：
BRAUN, V;GNIRKE, H;REHN, K
对于大肠杆菌K-12和W的细胞膜，已经测定了每个重复的毛霉单位的表面积(即每个二氨基苯二酸酯分子的表面积)。这个表面积一直被发现是1.3nm2。使用此值和E的其他先前确定的属性。提出了毛尿嘧啶的三维模型。该模型规定了一个单分子层，其中双糖单元每个长1.03 nm，多糖链都平行，相距1.25 nm。交联肽侧链具有相同的原子坐标，并且排列在多糖链的上方或下方。
The surface area per repeating murein unit (i.e. per molecule of diaminopimelate) has been determined for the cell envelopes of theEscherichia colistrains K-12 and W. This area was constantly found to be 1.3 nm2. Using this value and other previously determined properties ofE. colimurein, a three-dimensional model of murein is proposed. The model specifies a monomolecular layer in which disaccharide units are each 1.03 nm long, and the polysaccharide chains, all parallel, are 1.25 nm apart. The cross-linking peptide side-chains have the same atomic coordinates and are arranged above or below the polysaccharide chains.