TKT and gastrointestinal disease: For the pathogen Campylobacter which causes campylobacteriosis, a worldwide gastrointestinal disease in humans, the commonly used seven-gene MLST scheme consists of housekeeping genes aspA (aspartase A), glnA (glutamine synthetase), gltA (citrate synthase), glyA (serine hydroxymethyltransferase), pgm (phosphoglucomutase), tkt (transketolase) and uncA (ATP synthase α subunit).