魏艳梅, 张东辉, 莫土香, 李鹏, 陈光英.解脲沙雷菌(Serratia ureilytica)次级代谢产物及其抗菌活性研究[J].海南师范大学学报自科版,2024,37(3):331-337 |
解脲沙雷菌(Serratia ureilytica)次级代谢产物及其抗菌活性研究 |
Study on the Secondary Metabolites and Antibacterial Activity of Serratia ureilytica |
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DOI:10.12051/j.issn.1674-4942.2024.03.010 |
中文关键词: 解脲沙雷菌 次级代谢产物 抗菌活性 |
英文关键词: secondary metabolites antibacterial activity |
基金项目:海南省研究生创新科研课题 (Qhyb2021-43);海南省院士创新平台科研专项基金(YSPTZX202030) |
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中文摘要: |
本研究对一株海洋来源细菌(Serratia ureilytica)的次级代谢产物进行系统分离。采用多种柱色谱分离方法从该菌中分离得到16个单体化合物,运用 NMR 技术鉴定所得化合物分别为:环(色氨酸-丝氨酸)(1)、环(甘氨酸-色氨酸)(2)、环(苯丙氨酸-谷氨酰胺)(3)、环(亮氨酸-谷氨酰胺)(4)、环(L-酪氨酸-4-羟基-D-脯氨酸)(5)、环(L-苯丙氨酸-4-羟基-D-脯氨酸)(6)、环(L-苯丙氨酸-4-羟基-L-脯氨酸)(7)、环(L-4-羟基-脯氨酸-L-亮氨酸)(8)、环(脯氨酸-酪氨酸)(9)、环(D-脯氨酸-L-酪氨酸)(10)、环(S-脯氨酸-S-亮氨酸)(11)、环(L-脯氨酸-L-缬氨酸)(12)、环(酪氨酸-甘氨酸)(13)、环(R-苯丙氨酸-S-丝氨酸)(14)、环(L-苯丙氨酸-甘氨酸)(15)和环(甘氨酸-亮氨酸)(16)。化合物1 ~ 16均为首次从解脲沙雷菌中分离得到。抗菌活性显示,粗提物对青枯菌有显著的拮抗作用,而单体化合物对青枯菌以及5株人体致病菌均无明显活性。 |
英文摘要: |
The secondary metabolites of marine bacteria (Serratia ureilytica) were studied systematically, and sixteen compounds were isolated by various chromatographic methods and the structures of these compounds were identified by 1D and 2D NMR. The compounds were identified to be cyclo-(L-Trp-L-Ser) (1), cyclo-(Gly-L-Trp) (2), cyclo-(Phe-Gln) (3), cyclo-(Leu-Gln) (4), cyclo-(L-tyrosyl-cis-4-hydroxy-D-proline) (5), cyclo-(L-phenylalanine-D-4-hydroxyproline) (6), cyclo-(L-4-OH-Pro-L-Phe) (7), cyclo-(L-4-Hyp-L-Leu) (8), cyclo-(L-Pro-L-Tyr) (9), cylco-(D-Pro-L-Tyr) (10), cyclo-(S-Pro-S-Leu) (11), cyclo-(L-Pro-L-Val) (12), cyclo-(Tyr-Gly) (13), cyclo-(R-Phe-S-Ser) (14), cyclo-(L-Phe-Gly) (15), and cyclo-(Gly-Leu) (16) respectively. All the compounds were isolated from the S. ureilytica for the first time. The antibacterial activity showed that the crude extract had significant antagonistic effect on Ralstonia solanacearum, while, no compound showed antibacterial activity against Ralstonia solanacearum and 5 strains of human pathogenic bacteria. |
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