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引用次数: 0
摘要
细胞内 DNA 主要是真核生物和原核生物的细胞遗传物质。这一功能通常由 DNA 结构的改变来调节,以适应转录、重组和 DNA 复制。在细胞外,无论是真核细胞还是原核细胞,都会利用大量的 DNA 和有利的环境,创造新的结构来发挥多种新的作用。与细胞内的情况一样,细胞外 DNA 也需要蛋白质来促进和稳定这些重要结构。在这里,我将回顾宿主和真细菌的核蛋白结构、它们的组成、它们的功能以及这些不同的结构如何相互作用。即使是在研究的早期阶段,细胞外染色质在原核生物和真核生物的生存过程中显然都发挥着重要的生物学作用。
Intracellular DNA primarily serves as the cellular genetic material both in eukaryotes and prokaryotes. This function is often regulated by alterations in the DNA structure to accommodate transcription, recombination, and DNA replication. Extracellularly, both eukaryotic and prokaryotic cells take advantage of DNA plenty in addition to a permissive environment and create novel structures to fulfill multiple new roles. As often occurs intracellularly, extracellular DNA requires proteins to facilitate and stabilize these important structures. Here I review, both host and eubacterial nucleoprotein structures, their composition, their functions, and how these distinct structures can interact. Even at this early stage of study, it is clear that extracellular chromatin plays important biological roles in the survival of both prokaryotic and eukaryotic organisms.
期刊介绍:
Current Opinion in Structural Biology (COSB) aims to stimulate scientifically grounded, interdisciplinary, multi-scale debate and exchange of ideas. It contains polished, concise and timely reviews and opinions, with particular emphasis on those articles published in the past two years. In addition to describing recent trends, the authors are encouraged to give their subjective opinion of the topics discussed.
In COSB, we help the reader by providing in a systematic manner:
1. The views of experts on current advances in their field in a clear and readable form.
2. Evaluations of the most interesting papers, annotated by experts, from the great wealth of original publications.
[...]
The subject of Structural Biology is divided into twelve themed sections, each of which is reviewed once a year. Each issue contains two sections, and the amount of space devoted to each section is related to its importance.
-Folding and Binding-
Nucleic acids and their protein complexes-
Macromolecular Machines-
Theory and Simulation-
Sequences and Topology-
New constructs and expression of proteins-
Membranes-
Engineering and Design-
Carbohydrate-protein interactions and glycosylation-
Biophysical and molecular biological methods-
Multi-protein assemblies in signalling-
Catalysis and Regulation