AXanthomonas maltophilia isolate tolerating up to 1% sodium azide in Tris/HCl buffer

A bacterium tolerating up to 1% NaN3 found as a contaminant of Sephadex colums being run with Tris/HCl buffer, was identified asXanthomonas maltophilia. It had low nutrient requirements, was strongly proteolytic and interfered with Sephadex columns run with Tris/HCl buffers.