Comparison of Flavobacterium and Sphingobacterium species by enzyme profiles, with use of pattern recognition of two-dimensional fluorescence data.
Enzyme profiles of eight Flavobacterium species and one Sphingobacterium species were compared after using a two-dimensional fluorescence technique. Enzyme contents and corresponding activities were rapidly determined for whole-cell preparations after incubation with a mixture of preselected fluorogenic substrates. A two-dimensional fluorescence spectrum of the resulting product mixture, measured with a video fluorometer, provided a characteristic "fingerprint" for each organism. Comparison of fluorescent spectra was facilitated by a Fourier-transform-based pattern-recognition algorithm and by a clustering technique involving the Pearson product-moment correlation coefficient. F. multivorum, F. thalpophilum, and S. mizutae formed one cluster; F. indologenes, F. spiritivorum, F. odoratum, and F. balustinum formed a second. F. meningosepticum was intermediate between the first and second cluster, whereas F. breve was different from all other strains examined, based on their spectral dissimilarity indices and correlation coefficients.
D005417:Flavobacterium / Q000145:classification* / Q000201:enzymology; D006088:Gram-Negative Aerobic Bacteria / Q000145:classification* / Q000201:enzymology; D007202:Indicators and Reagents; D013045:Species Specificity; D013050:Spectrometry, Fluorescence / Q000379:methods
D007202:Indicators and Reagents