A protein with lytic activity against Micrococcus luteus was purified from the hemolymph of the fall webworm, Hyphantria cunea, larvae challenged with live E. coli. A bacteriolytic protein of about 14,000 daltons in mass was purified by cation exchange chromatography and reverse-phased HPLC. The opt
Nucleotide sequence-based typing of bacteria and the impact of automation
โ Scribed by Stuart C. Clarke
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 121 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0265-9247
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โฆ Synopsis
DNA-based typing methods are increasingly important for the characterisation of bacteria. They are used to monitor the epidemiology of pathogens with public health significance and also to help understand the evolution and population biology of bacteria. However, these methods require accuracy and reproducibility and are often of a high-throughput nature. Laboratory automation is therefore the key to the successful implementation of such methods. This review describes the impact of automation on DNA-based typing methods, particularly multi-locus sequence typing (MLST), and the method components that can be automated.
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The vibrational spectra of four genomic and two synthetic DNAs, encompassing a wide range in base composition [poly(dA-dT) 72% G ฯฉ C; poly(dG-dC)โ poly(dG-dC), 100% G ฯฉ C] (dA: deoxyadenosine; dG: deoxyguanosine; dC: deoxycytidine; dT: thymidine), have been analyzed using Raman difference methods of
The probability distributions of bases in nucleotide sequences are deduced from the maximum information principle by maximizing the entropy (due to random mutation of bases) under certain constraints (Markovian entropy, G+C content, etc, due to selection). Two formulations are given with respect to