Claesson R, Edlund M B, Persson S, Carlsson J
Department of Oral Microbiology, University of Umea, Sweden.
Oral Microbiol Immunol. 1990 Jun;5(3):137-42. doi: 10.1111/j.1399-302x.1990.tb00411.x.
In 12 species of Fusobacterium the following characteristics were studied; the desulfhydration of L-cysteine and L-methionine by resting cell suspensions, the formation of alpha-keto-acids from L-cysteine, D-cysteine and L-methionine by cell extracts, and the formation of hydrogen sulfide from L-cysteine, D-cysteine and L-cysteine by cell extracts separated by polyacrylamide gel electrophoresis. Multiple forms of L-cysteine desulfhydrase activity were found in most of the species. In some of them also D-cysteine desulfhydrase activity was demonstrated. Seven of the species had high L-methionine gamma-lyase activity. L-cysteine activity was present in 5 of the species.
对12种梭杆菌属细菌的以下特性进行了研究：静止细胞悬液对L-半胱氨酸和L-甲硫氨酸的脱硫作用；细胞提取物将L-半胱氨酸、D-半胱氨酸和L-甲硫氨酸转化为α-酮酸的过程；以及通过聚丙烯酰胺凝胶电泳分离的细胞提取物将L-半胱氨酸、D-半胱氨酸和L-半胱氨酸转化为硫化氢的过程。在大多数物种中发现了多种形式的L-半胱氨酸脱硫酶活性。在其中一些物种中也证实了D-半胱氨酸脱硫酶活性。7个物种具有较高的L-甲硫氨酸γ-裂解酶活性。5个物种存在L-半胱氨酸活性。
