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If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
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All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
La rsistance aux glycopeptides chez les entrocoques est due la synthse de prcurseurs du peptidoglycane termins par DalanylDlactate ou DAlaDsrine au lieu du DAlaDAla. Les gnes de rgulation vanRS et de rsistance vanYWHBX sont transcrits de manire inductible par la vancomycine partir des promoteurs PRB et PYB respectivement. En prsence de Vm, le capteur s'autophosphoryle et transfre son phosphate au rgulateur qui se fixe 1 site sur PRB et 2 sites sur PYB. La constitutivit VanB est due une dltion ou mutation dans le capteur entranant une perte de son activit phosphatase. La rsistance VanD est due la synthse constitutive de prcurseurs DAlaDLac suite des mutations dans les gnes de rgulation associes des mutations dans le gne de la ligase DAla:DAla. L'opron vanG compos de gnes recruts dans divers oprons van se caractrise par un systme rgulateur 3 composantes transcrits constitutivement partir du promoteur de rgulation alors que la transcription des gnes de rsistance est inductible partir du promoteur de rsistance. Une PCR multiplex permet la dtection de la rsistance aux glycopeptides et l'identification de l'espce.
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