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Related Concept Videos

Septins01:19

Septins

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Septins are protein filaments forming the cytoskeleton along with the microtubules, microfilaments, intermediate filaments, and other accessory proteins. In 1971 while studying the cell division cycle in mutant Saccharomyces cerevisiae Harwell et al. first identified the septin-related genes playing a crucial role in yeast cytokinesis. Fluorescence microscopy revealed that these proteins localize at the budding neck as rings. These ring-like proteins were then named Septins by John Pringle, and...
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Septins are the recently discovered fourth major protein component of the cytoskeleton, along with microfilaments, microtubules, and intermediate filaments. These proteins can associate with other cytoskeletal filaments and carry out varied roles or can be free-floating in the cytoplasm.
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Restriction enzymes are bacterial enzymes used to cut DNA in a sequence-specific manner. To cleave DNA, they bind to specific palindromic sequences called restriction sites. Such palindromic DNA sequences or inverted repeats are commonly found in regions of functional significance, such as the origin of replication, gene operator sites, and regions containing transcription termination signals.
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Zones of Protection01:16

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In power systems, the entire setup is divided into protective zones to isolate faults and protect the rest of the network. These zones include generators, transformers, buses, transmission lines, distribution lines, and motors. Each zone can be visualized as a separate room in a house, with each room protected by its own circuit breaker.
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This lesson delves into the concept of protection and deprotection of a functional group fundamental to synthetic organic chemistry. These phenomena are explained in the context of aliphatic and aromatic alcohols.
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Related Experiment Video

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Bordetella petrii clinical isolate.

Norman K Fry1, John Duncan, Henry Malnick

  • 1Health Protection Agency, Respiratory and Systemic Infection Laboratory, Centre for Infections, London, United Kingdom. Norman.Fry@HPA.org.uk

Emerging Infectious Diseases
|July 19, 2005
PubMed
Summary

This study reports the first human infection caused by Bordetella petrii, identified in a patient with mandibular osteomyelitis. Previously, this bacterium was only known from environmental samples.

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Area of Science:

  • Microbiology
  • Infectious Diseases
  • Clinical Diagnostics

Background:

  • Bordetella petrii is a bacterial species.
  • The bacterium has been previously isolated from environmental sources.

Observation:

  • This study details the first clinical isolation of Bordetella petrii.
  • The isolate was obtained from a patient diagnosed with mandibular osteomyelitis.

Findings:

  • Bordetella petrii can cause human infections.
  • Mandibular osteomyelitis is a potential manifestation of B. petrii infection.

Implications:

  • This finding expands the known pathogenic potential of Bordetella species.
  • Clinical laboratories should consider B. petrii in the differential diagnosis of similar infections.
  • Further research is warranted to understand the clinical significance and transmission of Bordetella petrii.