针对传统溶液酶解存在的酶解时间较长、酶自切物干扰以及蛋白酶不能重复使用等缺陷,通过电子转移生成催化剂的原子转移自由基聚合法修饰银丝,并以其为载体制备了一种新型的固定化酶反应器.用质谱考察了银丝固定化酶反应器(SW-Trypsin)的酶解效率、重复性和回收率.结果表明:绒毛状聚合物修饰的SW-Trypsin的酶解效率较高,酶解标准蛋白牛血清白蛋白(BSA)20 min后,肽段的氨基酸序列覆盖率可达93%,高于传统溶液酶解方法酶解16h所得79%的覆盖率.使用该固定化酶反应器于一个月内8次酶解BSA所得的氨基酸序列覆盖率在89%到97%之间,平均覆盖率为94%,显示出良好的稳定性.另外,该固定化酶反应器酶解马心肌红蛋白(MYO)的回收率为87.67%.最后,用SW-Trypsin酶解腾冲嗜热菌全蛋白20 min,所鉴定到的氨基酸序列覆盖率和蛋白数量与同样条件下溶液酶解16h的结果接近,且零漏切位点肽段的比例更高.加之容易分离的优点,SW-Trypsin在蛋白质组学的应用中具有良好的前景.
参考文献
[1] | Angel T E,Aryal U K,Hengel S M,et al.Chem Soc Rev,2012,41(10):3912 |
[2] | Mann M,Hojrup P,Roepstorff P.Biol Mass Spectrom,1993,22(6):338 |
[3] | Ogorzalek L R R,Hayes R,Yang Y,et al.Int J Mass Spectrom,2005,240:317 |
[4] | McDonald W H,Yates Ⅲ J R.Curr Opin Mol Ther,2003,5:302 |
[5] | Xu F,Wang W H,Tan Y J,et al.Anal Chem,2010,82(24):10045 |
[6] | Jang H B,Sung H W,Nho S W,et al.Anal Chem,2011,83(5):1717 |
[7] | Ren D,Pipes G D,Liu D,et al.Anal Biochem,2009,392(1):12 |
[8] | Lazar I M,Ramsey R S,Ramsey J M.Anal Chem,2001,73:1733 |
[9] | Slysz G W,Schriemer D C.Anal Chem,2005,77:1572 |
[10] | Ma J,Liang Z,Qiao X,et al.AnalChem,2008,80:2949 |
[11] | Ma J,Zhang L,Liang Z,et al.JSep Sci,2007,30:3050 |
[12] | Hinterwirth H,Lindner W,Lammerhofer M.Anal Chim Acta,2012,733:90 |
[13] | Miksík I,Lacinova K,Zmatlíková Z,et al.J Sep Sci,2012,35(8):994 |
[14] | Kotal M,Srivastava S K,Maiti T K.J Nanosci Nanotechnol,2011,11(11):10149 |
[15] | Qin W,Song Z,Fan C,et al.Anal Chem.2012,84(7):3138 |
[16] | Song Z F,Zhang Q L,Zhang Y J,et al.Chinese Journal of Chromatography(宋子凤,张庆林,张养军,等.色谱),2012,30(6):549 |
[17] | Xu G,Chen X,Hu J,Analyst.2012,137:2757 |
[18] | Zhao Y,Liu Y,Lee I,et al.J Biomed Mater Res A,2012,100(1):103 |
[19] | Liu J,Lin S,Qi D,et al.J Chromatogr A,2007,1176(1/2):169 |
[20] | Nikolic T,Kostic M,Praskalo J,et al.Carb Poly,2010,82(3):976 |
[21] | Yuan H,Zhang L,Hou C,et al.Anal Chem,2009,81 (21):8708 |
[22] | Qian K,Wan J,Qiao L,et al.Anal Chem,2009,81(14):5749 |
[23] | Liang Y,Tao D,Ma J,et al.J Chromatogr A,2011,1218(20):2898 |
[24] | Hu J W,Shen Y H,Qin W J,et al.Chem J Chinese(胡佳薇,申烨华,秦伟捷,等.高等学校化学学报),2012,33(2):268 |
[25] | Ma J,Liang Z,Qiao X,et al.Anal Chem,2008,80(8):2949 |
[26] | Feng J,Sun M,Xu L,et al.J Chromatogr A,2011,1218:7758 |
[27] | Matyjaszewski K,Xia J.Chem Rev,2001,101:2921 |
[28] | Tan Y,Yang Q,Sheng D,et al.e-Polymers,2008,25:1 |
[29] | Jones D M,Brown A A,Huck W T S,et al.Langmuir,2002,18:1265 |
[30] | Zhang Z,Chen S F,Chang Y,et al.J Phys Chem B,2006,110:10799 |
[31] | Perkins D N,Pappin D J C,Creasy D M,et al.Electrophoresis,1999,20(18):3551 |
[32] | Li D,Fu Y,Sun R,et al.Bioinformatics,2005,21(13):3049 |
[33] | Wang S,Bao H,Yang P,et al.Anal Chim Acta,2008,612(2):182 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%