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   How long does DNA replication take in a bacterial chromosome?

   • Bacteria typically have a single origin of replication in a circular chromosome. With fork speeds of up to 1000 nucleotides per second, they can replicate their genome in less than an hour. Eucaryotic DNA replication takes place in only one part of the cell cycle, the S phase.

   The Initiation and Completion of DNA Replication in Chromosomes

   www.ncbi.nlm.nih.gov/books/NBK26826/

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   Do bacterial chromosomes have a unique replication origin?

   • Front. Microbiol., 26 November 2018 Bacterial chromosomes have a single, unique replication origin (named oriC), from which DNA synthesis starts. This study describes methods of visualizing oriC regions and the chromosome replication in single living bacterial cells in real-time.

   Frontiers | Where and When Bacterial Chromosome Replication Starts: A

   www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2018.02819/full

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   How long does it take to replicate a bacterial genome?

   • DNA replication of a bacterial genome. It takes E. coli about 40 minutes to duplicate its genome of 4.6 × 10 6 nucleotide pairs. For simplicity, no Okazaki fragments are shown on the lagging strand. What happens as the two replication forks approach (more...) The proteins that initiate DNA replication in bacteria.

   The Initiation and Completion of DNA Replication in Chromosomes

   www.ncbi.nlm.nih.gov/books/NBK26826/

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   How does bacterial DNA replication start?

   • For bacterial DNA replication to begin, the supercoiled chromosome is relaxed by topoisomerase II, also called DNA gyrase. An enzyme called helicase then separates the DNA strands by breaking the hydrogen bonds between the nitrogenous base pairs.

   11.2: DNA Replication - Biology LibreTexts

   bio.libretexts.org/Bookshelves/Microbiology/Microbiology_(OpenStax)/11:_Mechanisms_of_Microbial_Genetics/11.02:_DNA_Replication

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   How long does it take to replicate a human chromosome?

   • An average-sized human chromosome contains a single linear DNA molecule of about 150 million nucleotide pairs. To replicate such a DNA molecule from end to end with a single replication fork moving at a rate of 50 nucleotides per second would require 0.02 × 150 × 10 6 = 3.0 × 10 6 seconds (about 800 hours).

   The Initiation and Completion of DNA Replication in Chromosomes

   www.ncbi.nlm.nih.gov/books/NBK26826/

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   What is the period from birth to initiation of chromosome replication?

   • a | The period from birth to initiation of chromosome replication is termed the B period. The period from initiation of DNA replication of a bacterial chromosome to completion is the C period, and the period from completion of replication to bacterial division is the D period.

   The bacterial cell cycle, chromosome inheritance and cell growth

   www.nature.com/articles/s41579-019-0212-7

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2. www.ncbi.nlm.nih.gov › books › NBK26826The Initiation and Completion of DNA Replication in Chromosomes

   www.ncbi.nlm.nih.gov › books › NBK26826

   The replication fork in eucaryotes moves about 10 times more slowly than the bacterial replication fork, and the much longer eucaryotic chromosomes each require many replication origins to complete their replication in a typical 8-hour S phase.

   • Author: Bruce Alberts, Alexander Johnson, Julian Lewis, Martin Raff, Keith Roberts, Peter Walter
   • Published: 2002

   • Publish Year: 2002

3. www.frontiersin.org › journals › microbiologyWhere and When Bacterial Chromosome Replication Starts: A ...

   www.frontiersin.org › journals › microbiology

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   Nov 25, 2018 · Bacterial chromosomes have a single, unique replication origin (named oriC), from which DNA synthesis starts. This study describes methods of visualizing oriC regions and the chromosome replication in single living bacterial cells in real-time.

4. www.nature.com › articles › s41579/019/0212-7The bacterial cell cycle, chromosome inheritance and cell ...

   www.nature.com › articles › s41579/019/0212-7

   Jun 4, 2019 · Duplication of the long chromosomal DNA molecules starts at a single sequence-specific point, the origin of replication, oriC. DNA synthesis proceeds bidirectionally from the replication origin and...

   • Author: Rodrigo Reyes-Lamothe, David J. Sherratt

   • Publish Year: 2019

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6. bio.libretexts.org › Bookshelves › Microbiology11.2: DNA Replication - Biology LibreTexts

   bio.libretexts.org › Bookshelves › Microbiology

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   Apr 21, 2024 · For bacterial DNA replication to begin, the supercoiled chromosome is relaxed by topoisomerase II, also called DNA gyrase. An enzyme called helicase then separates the DNA strands by breaking the hydrogen bonds between the nitrogenous base pairs.

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7. bio.libretexts.org › Bookshelves › GeneticsReplication in Bacteria - Biology LibreTexts

   bio.libretexts.org › Bookshelves › Genetics

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   Jun 20, 2023 · This cycle consists of two periods called C and D. The elongation time, or C period, is the time required to replicate the bacterial chromosome. From initiation to termination, this is about 40 min. The division time, or D period, is the time that elapses between completion of a round of DNA replication and completion of cell division. This is ...

8. www.sciencedirect.com › science › articleBacterial chromosomes and their replication - ScienceDirect

   www.sciencedirect.com › science › article

   Jan 1, 2024 · DNA replication proceeds in the grandmother cell and terminates in the mother cells. The D period follows and two cells are born with chromosomes already in the process of replication. Chromosome duplication stages with origins of replication (orange spheres) and termini (green spheres) are shown. 14.4.2.

9. www.nature.com › articles › nrmicro1640DNA replication initiation: mechanisms and regulation in bacteria

   www.nature.com › articles › nrmicro1640

   May 1, 2007 · Bacterial replication initiation — an overview. Replication initiation at Escherichia coli oriC. The bacterial chromosome typically contains a single origin of replication referred to as...