中文名 | 链霉溶菌素 |
英文名 | Streptolydigin |
别名 | 链菌碱 門黴素 鏈菌鹼 利迪链菌素 链霉溶菌素 化合物 T16945 |
英文别名 | portamycin Streptolydigin Antibiotic D-45 2-Pyrrolidineacetamide, 4-(2E,4E,6R)-6-(1R,2R,3R,4S,5R)-1,4-dimethylspiro2,9-dioxabicyclo3.3.1non-6-ene-8,2-oxiran-3-yl-1-hydroxy-4-methyl-2,4-heptadienylidene-N,.alpha.-dimethyl-3,5-dioxo-1-(2S,5S,6S)-tetrahydro-5-hydroxy-6-methyl-2H-pyran-2-yl-, (.alpha 2-Pyrrolidineacetamide, 4-[(2E,4E,6R)-6-[(1R,2'R,3R,4S,5R)-1,4-dimethylspiro[2,9-dioxabicyclo[3.3.1]non-6-ene-8,2'-oxiran]-3-yl]-1-hydroxy-4-methyl-2,4-heptadien-1-ylidene]-N,α-dimethyl-3,5-dioxo-1-[(2S,5S,6S)-tetrahydro-5-hydroxy-6-methyl-2H-pyran-2-yl]-, (αS,2S,4E)- |
CAS | 7229-50-7 |
化学式 | C32H46N2O9 |
分子量 | 602.72 |
密度 | 1.1852 (rough estimate) |
熔点 | 147-148° |
沸点 | 659.54°C (rough estimate) |
比旋光度 | D25 -93° (c = 1.6 in chloroform) |
折射率 | 1.6260 (estimate) |
酸度系数 | 4.50±1.00(Predicted) |
存储条件 | -20°C,干燥,密封 |
MDL号 | MFCD00211196 |
体外研究 | The antibiotic Streptolydigin (Stl) is a derivative of 3-acetyltetramic acid. Binding of Streptolydigin to RNA polymerase strictly depends on a noncatalytic magnesium ion which is likely chelated by the aspartate of the bridge helix of the active center. Streptolydigin inhibits T. thermophilus RNA polymerase with a K i of 1.8 μM. Streptolydigin (Stl) inhibits initiation, elongation, and pyrophosphorolysis by bacterial RNA polymerase. Streptolydigin interacts with three structural elements within RNAP: the Stl pocket, the bridge helix, and the trigger-loop region. The Streptolydigin streptolol moiety interacts with the Streptolydigin pocket and bridge helix, and the Streptolydigin tetramic-acid moiety interacts with the trigger-loop region. |
微信搜索化工百科或扫描下方二维码,添加化工百科小程序,随时随地查信息!