| Abstrakt: |
Mycobacterium fortuiturnsubspecies acetamidolyticumis a new subspecies of M. fortuiturnand has an intermediate growth rate. It is a nonphotochromogenic mycobacterium. It does not utilize glutamate but utilizes acetamide as a simultaneous nitrogen and carbon source. It is able to utilize acetate, malate, pyruvate, fumarate, glucose, fructose, and n‐propanol as the sole sources of carbon in the presence of ammoniacal nitrogen, but does not utilize them in the presence of glutamate‐nitrogen. It is easily differentiated from all rapidly growing mycobacteria by its inability to utilize glutamate as a simultaneous nitrogen and carbon source, and from all slowly growing mycobacteria by its capacity to utilize acetamide as a simultaneous nitrogen and carbon source. Its mycolic acid pattern is different from that of M. fortuiturn. However, its deoxyribonucleic acid showed 94% relatedness with that of M. fortuiturn. In view of the above findings, it has been designated as a new subspecies of M. fortuiturn. The organism was isolated from sputum of a 56‐year‐old patient with lung disease and is considered to be a lung pathogen. The type strain is ATCC 35931 (NCH El 1620). |
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