Studies on diaminododecane Utilization by Bacteria Studies on Diaminododecane Utilization by Corynebacterium sp. DAD 2-3

Diaminododecane 자화균에 관한 연구 제2보 Corynebacterium sp. DAD 2-3의 Diaminododecane자화에 관한 연구

A Corynebacterium sp. capable of utilizing diaminododecane (DAD) were isolated from the soil by enrichment culture. Among 9 different kinds of substituted alkanes containing CN, $NH_2$, Cl, and SH groups (monoterminally or diterminally substituted) tested as carbon source, the isolate, designated as DAD 2-3, utilized DAD, putrescine dihydrochloride, dodecane and laurylamine. Dodecanethiol, thioanisole, decanedithiol, dicyanooctane, laurylcyanide,and dichlorodecane were not utilized. When emulgen 950 was added to the medium, the growth of DAD 2-3 was slightly accelerated. Isolate DAD 2-3 grown in the medium with DAD as carbon source formed .alpha.-ketoglutaric acid. Metabolic product of DAD 2-3 grown in a medium without nitrogen source was different from that of grown in a medium with $NH_4NO_3$. When glucose, putrescine, n-dodecane and other alkane derivatives were tested in place of DAD, isolate DAD 2-3 yielded products different from those they formed with DAD suggesting specificity of DAD as a carbon source.

토양으로부터 diaminododecane 자화균 DAD2-3주를 분리하여 Coryηebacterium속으로 동정하였다. DADZ2-3의 alkane유도체에 대한 생육특성조사에서 putrescine, dodecane, laurylamine 등은 탄소원으로 이용되었으나 dod-ecanethiol, thioanisole, decanedithiol, dicyanooctane, laurylcyanide, dichlorodecane등은 이용되지 못하였으며, emulgen 첨가에 의한 diaminododecane 자화촉진 효과는 미세하였다. DAD2-3림에 의해 diaminododecane 자화시 생성되는 중간생성불은 $\alpha$-ketoglutaric acid로 동정되었다. 그러나 d diaminododecane을 탄소원 뿐만 아니라 질소원으로도 이용하었을 경우 $\alpha$-ketoglutaric acid와는 상이한 중간 생성 풍을 생성하였으며, 탄소원으로 diaminododecane 대신 glucose, putrescine, n-dodecane을 사용하였을 경우와 또한 resting cell을 이용하여 여러가지 다른 alkane유도체를 co-oxidation시키는 과정에서도 $\alpha$-ketoglutaric acid와는 상이한 생성물이 생성되었다.