PMID: 6401818Jan 1, 1983

Substrate specificity of two bacteriophage-associated endo-N-acetylneuraminidases

Journal of Virology
B KwiatkowskiS Stirm

Abstract

For Escherichia coli Bos12 (O16:K92:H-), a bacteriophage (phi 92) has been isolated which carries a depolymerase active on the K92 capsular polysaccharide. As seen under the electron microscope, phi 92 belongs to Bradley's morphology group A and is different from the phage phi 1.2 previously described (Kwiatkowski et al., J. Virol. 43:697-704, 1982), which grows on E. coli K235 (O1:K1:H-), depolymerizes colominic acid, and belongs to morphology group C. The specificity of the phi 1.2- and phi 92-associated endo-N-acetylneuraminidases has been studied with respect to the following substrates (all alkali treated, and where NeuNAc represents N-acetylneuraminic acid): (i) [-alpha-NeuNAc-(2 leads to 8)-]n (colominic acid), (ii) [-alpha-NeuNAc-(2 leads to 8)-alpha-NeuNAc-(2 leads to 9)-]n (E. coli K92 polysaccharide), and (iii) [-alpha-NeuNAc-(2 leads to 9)-]n (Neisseria meningitidis type C capsular polysaccharide). The increase in periodate consumption of these glycans upon incubation with purified phi 1.2 or phi 92 particles was measured, and the split products obtained from all substrates after exhaustive degradation were analyzed by gel chromatography. It was found that the Neisseria polysaccharide is not appreciably affected by ...Continue Reading

Citations

Dec 21, 2000·Molecular Microbiology·J MediavillaG F Hatfull
Mar 25, 2015·Critical Care Medicine·Nicolas DufourJean-Damien Ricard
Jan 6, 2000·FEMS Microbiology Letters·Y MachidaS Iijima
May 13, 2006·Molecular Microbiology·Katharina StummeyerMartina Mühlenhoff
May 31, 2019·Biofouling·Legesse Geredew KifelewPeter Speck
Mar 25, 2017·Applied Microbiology and Biotechnology·Agnieszka LatkaZuzanna Drulis-Kawa
May 28, 2019·FEMS Microbiology Ecology·F LelchatA-C Baudoux

Related Concepts

colominic acid
Endo-N-acetylneuraminidase F
Molecular Sieve Chromatography
Coliphages
Alkalescens-Dispar Group
Neisseria meningitidis
Neuraminidase
Polysaccharides
Polysaccharides, Bacterial
Substrate Specificity

Related Feeds

Bacteriophage: Phage Therapy

Phage therapy uses bacterial viruses (bacteriophages) to treat bacterial infections and is widely being recognized as an alternative to antibiotics. Here is the latest research.