Methods to identify enzymes that degrade the main extracellular polysaccharide component of Staphylococcus epidermidis biofilms.
Methods to identify enzymes that degrade the main extracellular polysaccharide component of Staphylococcus epidermidis biofilms.
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DOI:
10.4161/viru.23560
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发表时间:
2013-04-01
期刊:
影响因子:
5.2
通讯作者:
Wiesner J
中科院分区:
文献类型:
--
作者:
Gökçen A;Vilcinskas A;Wiesner J
The production of extracellular poly-β-1,6-N-acetyl-d-glucosamine (PNAG) by Staphylococcus epidermidis is the principal determinant of biofilm formation on indwelling medical devices. Enzymes that degrade PNAG therefore provide an attractive strategy for biofilm removal and for the manufacture of biofilm-resistant coatings. Here we present methods that allow the identification of PNAG-degrading enzymes with the ability to detach biofilms. Our protocol includes the preparation of soluble PNAG from S. epidermidis cultures, the incubation of soluble PNAG with candidate enzymes and assays that detect the release of N-acetyl-d-glucosamine using high-pH anion-exchange chromatography (HPAEC) followed in parallel by pulsed amperometric detection (PAD) and online electrospray ionization mass spectrometry (ESI-MS). We validated our procedures using dispersin B, which is currently the only known PNAG-degrading enzyme.
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作者:
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通讯作者:
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影响因子:
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Jayatilleke, Kushlani
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Mark, GE
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Gotz, F