期刊文献+

青霉素酰化酶固定化前后动力学行为的比较 被引量:1

Studies on the Dynamics of Penicillin Acylase in Free and Immobilized State
在线阅读 下载PDF
导出
摘要 在优化的固定化条件下,通过戊二醛交联直接将青霉素酰化酶固定化。在优化的环境条件下测定游离酶和两种固定化酶的动力学常数。结果表明,尽管固定化酶的米氏常数增大,但产物抑制作用减弱,裂解青霉素的实验结果表明,固定化酶更适合在工业上应用。 Penicillin acylase was directly immobilized with glutaraldehyde as the crosslinked agent under the optimal immobilized conditions.The dynamic constans of free enzyme and two kinds of immobilized enzymes were determined under the optimal environmental factors.The results showed that Km of immobilized enzyme was obviouslt increased,but the inhibitions of products were decreased.The experiments of hydrolized penicillin-G showed that immobilized enzyme was suitable for utilization on industrial scale..
出处 《生物学杂志》 CAS CSCD 1999年第2期23-24,共2页 Journal of Biology
关键词 青霉素酰化酶 动力学 固定化酶 penicillin acylase,dynamics
  • 相关文献

同被引文献27

  • 1Hernandez- Justiz O, Fernandez - Lafuente R,Terreni M,et al. Use of aqueous two- phase systems for in situ extraction of water soluble antibiotics during their synthesis by enzymes immobilized on porous supports [ J ]. Biotechnol Bioeng, 1998,59(1 ): 73
  • 2van Langen LM, van Tantwijk F, Svedas VK, et al. Penicillin acylase- catalyzed peptide synthesis: a chemo. - enzymatc route to stereoisomers of 3, 6 - diphenylpiperazine - 2, 5 -dione[ J ]. Tetrahedron: Asymmetry, 2000,11:1077
  • 3Kirilerko AG, Fokina NA, Kukhar VP, et al. Chemo- enzymatic approach to the synthesis of each of the four isomers of a- alkyl - β- fluoroalkyl - substituted β - amino acids[J].Tetrahedron : Asymmetry, 1994,7(5): 1225
  • 4Mateo C,Abian O, Fernandez - Lafuente R,et al. Increase in conformational stability of enzymes immobilized on epoxy- activated supports by favoring additional multipoint covalent attachment[J]. Enz Microb Technol,2000,26( 7 ) :509
  • 5Hsiau LT, Lee WC, Wang FS. Immobilization of wholecell penicillin G Acylase by entrapping within polymethacrylamide beads[J]. Appl Biochem Biotechnol , 1997,62(2) :303
  • 6Eldin MM,Schroe CGPH,Schroen AEM, et al. Immobilization of penicillin G acylase onto nylon membranes grafted with different acrylic monomers by means of gamma radiation[J ]. J Mol Catal B: Enzym , 2000,8: 233
  • 7Torres BJ,Arroyo M,Torres GR,et al. Covalent immobilization of penicillin acylase from Streptomyces lavendulae [ J ].Biotechnol Lett ,2000,22(12): 1011
  • 8He J, Li XF, Evans DG, et al. A new support for the immobilization of penicillin acylase [ J ]. J Mol Catal B: Enzym,2000,11: 45
  • 9Cao L, van Rantwijk F, Sheldon RA. Cross- Linked Enzyme Aggregates: A simple and effective method for the immobilization of penicillin acylase[J]. Org Lett,2000,2(10):1361
  • 10Wilhelm Tischer,Volker Kasche. Immobilized enzymes: crystals or carriers? [J]. Yibtech ,1999,17(8) :326

引证文献1

二级引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部