Download Bacterial and Bacteriophage Genetics by Edward A. Birge PDF

By Edward A. Birge

ISBN-10: 0387239197

ISBN-13: 9780387239194

Genetic investigations and manipulations of micro organism and bacteriophage have made important contributions to our simple figuring out of residing cells and to the improvement of molecular biology and biotechnology. This quantity is a survey of the genetics of micro organism and their viruses, and it presents scholars with a finished creation to this speedily altering topic. The ebook is written for top point undergraduates and starting graduate scholars, relatively those that have had an introductory genetics course.

The 5th version has been largely revised to mirror contemporary advances within the box. The e-book now has a reader-friendly glance, with end-of-chapter questions, "Thinking forward" and "Applications" bins to problem scholars’ comprehension and insights. an entire thesaurus of widely used phrases has been revised and increased.

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DNA polymerase III is responsible for the bulk production of DNA. Its action is rapid, and it can join together up to 60,000 nucleotides per minute. It also has a proofreading capability, a 3′→5′ exonuclease activity that allows the enzyme to “backspace” if an incorrect base has been inserted. 1). 1. Major E. coli genetic loci involved in DNA replication. Genetic Locus in Bacteria (E. 1. (Continued) Genetic Locus in Bacteria (E. coli) Protein Function Lig (NADdependent) NrdAB PolA, RNase H PolC RpoA RpoB RpoD Ssb DNA ligase; joins Okazaki fragments Ribonucleotide reductase that synthesizes deoxyribonucleotides from ribonucleotides Removal of primers, repair enzyme Removal of primers, repair enzyme α Subunit of DNA polymerase III; polymerase function α Subunit of RNA polymerase β Subunit of RNA polymerase σ Subunit of RNA polymerase; responsible for normal promoter binding Single-strand DNA binding protein; facilitates melting of helices and stabilizes single strands Functional Equivalent in Archaea DNA ligase I (ATP-dependent) Flap endonuclease I RNase H RPA/SSB The number of proteins involved in DNA replication is far greater than what can be summarized in one table.

Genetics 54: 61–76. , Deighan, P. (2003). Regulation of gene expression by histone-like proteins in bacteria. Current Opinion in Genetics & Development 13: 179–184. , Scheffers, D. (2003). Cytokinesis in bacteria. Microbiology and Molecular Biology Reviews 67: 52–65. N. )(2004). The Bacterial Chromosome. Washington, DC: ASM Press. , AllardetServent, A. (1998). Unconventional genomic organization in the alpha subgroup of the proteobacteria. Journal of Bacteriology 180: 2749–2755. Lederberg, J. (1987).

The predominant impression of isolated nucleoids is one of coiled DNA. This complex structure consists of 60% DNA, 30% RNA, and 10% protein. It consists of superhelical coils that result from twisting an entire DNA helix over and above the normal helical turns. This is roughly equivalent to taking a twostranded wire rope, coiling it on the ground, and then gluing the ends together so that the extra turns become an integral part of the structure and give a torsional tension to the structure. On a molecular scale, superhelical turns are added or removed by a group of enzymes known as topoisomerases, which act to change only the topology of a DNA molecule and not its base sequence.

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Bacterial and Bacteriophage Genetics by Edward A. Birge

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