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小樂添金蟲 (小有名氣)
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[交流]
求生化高手翻譯哦!急急急~
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請生化高手翻譯一下: The tritiated formaldehyde released upon demethylation of (S)-N-[N-methyl-3H]methylcoclaurine (1 mCi, 85 Ci/mmol) to (S)-coclaurine by the berberine bridge enzyme (0.9 nanokatal)in a total volume of 160 ml of 20mM potassium phosphate buffer, pH 9.3, incubated for 30 min at 37 °C was diluted by the addition of 80 ml of 37%formaldehyde and reacted with dimedone (5,5-dimethyl-1,3-cyclohexanedione)(300 mg in 3 ml of 50% methanol) at room temperature overnight. |

金蟲 (小有名氣)
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在總體積為160mL、pH9.3的20mM磷酸鹽緩沖溶液中,經(jīng)37°C 保溫30min,(S)-N-[N-甲基-3H]甲基烏藥堿(1mCi, 85Ci/mmol)在小檗堿橋酶(0.9 nanokatal)催化下發(fā)生去甲基化反應生成(S)-烏藥堿,所釋放的氚示蹤甲醛被加入的80mL37%甲醛稀釋,并在室溫下與雙甲酮(5,5-二甲基-1,3-環(huán)已二酮)(300mg溶于3mL50%甲醇)反應過夜。 附帶說明一下: 1. 該句主干部分為:The tritiated formaldehyde was diluted and reacted. 2. 酶催化活性的國際制單位是摩爾每秒mmol/S,即每秒轉(zhuǎn)化的底物量。IUPAC(國際純理論與應用化學聯(lián)合會)暫時承認Katal(Kat)作為這種單位(即1Kat=1mol/s)。但尚未被CGPM(國際計量會議)所公認。摩爾秒(mol/s)如被采用,將取代國際酶單位(符號U)。換算因數(shù)IU=1μmol/min=16.67nmo1/S=16.67nkat(nkat=nanokatal)。 |
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