Prokaryotic genomes

Xem 1-17 trên 17 kết quả Prokaryotic genomes
  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Wertheim cung cấp cho các bạn kiến thức về ngành y đề tài: ISsaga is an ensemble of web-based methods for high throughput identification and semiautomatic annotation of insertion sequences in prokaryotic genomes...

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  • Chapter 14 - Prokaryotic and organelle genetics. This chapter begins with a discussion of the origins of yeast mitochondrial work. It then discusses the development of Chlamydomonas reinhardtii as a model organism. It also shows how early work on the organelle genetics of Chlamydomonas and yeast were carried out relatively independently; but inevitably the rationales soon paralleled one another.

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  • Chapter 15 - Gene regulation in prokaryotes. This chapter include the contents: Overview of prokaryotic gene regulation, the regulation of gene transcription, attenuation of gene expression: termination of transcription, global regulatory mechanisms, a comprehensive example: the regulation of virulence genes in V. cholerae.

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  • The prokaryotic genomes, for which complete nucleotide sequences are available, always contain at least one RNase H gene, indicating that RNase H is ubiquitous in all prokaryotic cells. Coupled with its unique substrate specificity, the enzyme has been expected to play crucial roles in the biochemical processes associated with DNA replication, gene expression and DNA repair.

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  • Tái bản DNA I. Chứng minh tái bản DNA theo cơ chế bán bảo thủ 1. Cơ chế tái bản bán bảo thủ 1.1. Cơ chế tái bản ở prokaryote Đặc điểm cơ bản của sự tái bản đó là tái bản theo phương thức bán bảo thủ (semiconservative replication). Tái bản bán bảo thủ nghĩa là trong hai chuỗi của tất cả các phân tử DNA bao giờ cũng có: - Một chuỗi của DNA cũ (từ một trong hai chuỗi của DNA mẹ). - Một chuỗi của DNA mới (mới được tổng hợp). ...

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  • Tham khảo sách 'systems and computational biology – molecular and cellular experimental systems', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học quốc tế cung cấp cho các bạn kiến thức về ngành y đề tài: Accelerated evolution associated with genome reduction in a free-living prokaryote...

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  • Chapter 8 includes contents: The genetic code, transcription: from DNA to RNA, translation: from mRNA to protein, differences in gene expression between prokaryotes and eukaryotes, a comprehensive example: computerized analysis of gene expression in C. elegans, The effect of mutations on gene expression and gene function.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Molecular signature of hypersaline adaptation: insights from genome and proteome composition of halophilic prokaryotes ...

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  • This chapter introduce to the cell cycle. After completing this unit, you should be able to: Describe the structural organization of the prokaryotic genome and the eukaryotic genome; list the phases of the cell cycle; describe the sequence of events during each phase; list the phases of mitosis and describe the events characteristic of each phase;...

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  • DNA replication, the process of copying one double stranded DNA molecule to produce two identical copies, is at the heart of cell proliferation. This book highlights new insights into the replication process in eukaryotes, from the assembly of pre-replication complex and features of DNA replication origins, through polymerization mechanisms, to propagation of epigenetic states. It also covers cell cycle control of replication initiation and includes the latest on mechanisms of replication in prokaryotes. The association between genome replication and transcription is also addressed.

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  • Since the discovery of the DNA structure researchers have been highly interested in the molecular basis of genome inheritance. This book covers a wide range of aspects and issues related to the field of DNA replication. The association between genome replication, repair and recombination is also addressed, as well as summaries of recent work of the replication cycles of prokaryotic and eukaryotic viruses. The reader will gain an overview of our current understanding of DNA replication and related cellular processes, and useful resources for further reading....

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  • DNA transactions in eukaryotes require that proteins gain access to target sequences packaged in chromatin. Further, interactions between distinct nucleoprotein complexes are often required to generate higher-order structures. Here, we employed two prokaryotic site-specific recombination systems to investigate how chromatin packaging affects the assembly of nucleoprotein structures of different complexities at more than 30 genomic loci. The dynamic nature of chromatin permitted protein–DNA and DNA–DNA interactions for sites of at least 34 bp in length.

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  • Mycoplasmas, the smallest free-living organisms known, are prokaryotes that are bounded only by a plasma membrane. Their lack of a cell wall is associated with cellular pleomorphism and resistance to cell wall–active antimicrobial agents, such as penicillins and cephalosporins. The organisms' small genome limits biosynthesis and explains the difficulties encountered with in vitro cultivation. Mycoplasmas typically colonize mucosal surfaces of the respiratory and urogenital tracts of many animal species. Of the 17 species of mycoplasmas recovered from humans, most are commensals. ...

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  • Horizontal gene transfer has been a major force for genome plasticity over evolutionary history, and is largely responsible for fitness-enhancing traits, including antibiotic resistance and virulence factors. In particular, for adap-tation of prokaryotes to extreme environments, lateral gene transfer seems to have played a crucial role.

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  • The membrane associated proteins in eicosanoid and glutathione metabo-lism (MAPEG) superfamily includes structurally related membrane proteins with diverse functions of widespread origin. A total of 136 proteins belong-ing to the MAPEG superfamily were found in database and genome screenings. The members were found in prokaryotes and eukaryotes, but not in any archaeal organism.

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