主题：【已应助】文献查找-5篇-还差两篇就可以结贴了，谢谢了大家！！！

【序号】：1
【作者】：Xiaowei Qian, Hongxia Dong, Hong Tian, Yue Tong, Linfeng Guo, Xiaojing Hu, Xiangdong Gao, , Wenbing Yao
【题名】：Characterization of a site-specific PEGylated analog of exendin-4 and determination of the PEGylation site
【期刊】：International Journal of Pharmaceutics
【年、卷、期、起止页码】：Volume 454, Issue 1, 15 September 2013, Pages 553–558
【全文链接】：http://www.sciencedirect.com/science/article/pii/S0378517313005772

【序号】：2
【作者】：Pan LQ, Wang HB, Lai J, Xu YC, Zhang C, Chen SQ.
【题名】：Site-specific PEGylation of a mutated-cysteine residue and its effect on tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL).
【期刊】：Biomaterials.
【年、卷、期、起止页码】： 2013 Dec;34(36):9115-23. doi: 10.1016/j.biomaterials.2013.08.020. Epub 2013 Aug 24.
【全文链接】：http://www.ncbi.nlm.nih.gov/pubmed/23981355

【序号】：3
【作者】：Zhang C, Yang XL, Yuan YH, Pu J, Liao F.
【题名】：Site-specific PEGylation of therapeutic proteins via optimization of both accessible reactive amino acid residues and PEG derivatives.
【期刊】：BioDrugs
【年、卷、期、起止页码】： 2012 Aug 1;26(4):209-15. doi: 10.2165/11633350-000000000-00000
【全文链接】：

【序号】：4
【作者】：Sala A, Ehrbar M, Trentin D, Schoenmakers RG, V?r?s J, Weber FE
【题名】：Enzyme mediated site-specific surface modification.
【期刊】：Langmuir
【年、卷、期、起止页码】： 2010 Jul 6;26(13):11127-34. doi: 10.1021/la1008895
【全文链接】：

【序号】：5
【作者】：Gao M, Jin Y, Tong Y, Tian H, Gao X, Yao W.
【题名】：A site-specific PEGylated analog of exendin-4 with improved pharmacokinetics and pharmacodynamics in vivo.
【期刊】：J Pharm Pharmacol.
【年、卷、期、起止页码】：2012 Nov;64(11):1646-53. doi: 10.1111/j.2042-7158.2012.01545.x. Epub 2012 Jun 4.
【全文链接】：http://www.ncbi.nlm.nih.gov/pubmed/23058052