色谱 ›› 2013, Vol. 31 ›› Issue (4): 362-366.DOI: 10.3724/SP.J.1123.2012.11023

• 研究论文 • 上一篇    下一篇

纳升级反相液相色谱-串联质谱法分析锦灯笼提取物中的蛋白质

于海洋1,2,晏嘉泽2,郭明1,靳艳2*   

  1. 1. 大连大学环境与化学工程学院, 辽宁 大连 116022;2. 中国科学院大连化学物理研究所, 辽宁 大连 116023
  • 收稿日期:2012-11-28 出版日期:2013-04-22 发布日期:2013-04-24
  • 通讯作者: Tel:(0411)84379576,E-mail:yanjin@dicp.ac.cn
  • 基金资助:

    中国科学院院地合作项目(XBXJ-2011-034).

Analysis of proteins in the extracts of Physalis alkekengi L. var. franchetii (Mast.) Makino using nanoflow reversed-phase liquid chromatography-tandem mass spectrometry

YU Haiyang1,2, YAN Jiaze2, GUO Ming1, JIN Yan2*   

  1. 1. Environmental and Chemical Engineering College of Dalian University, Dalian 116022, China; 2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
  • Received:2012-11-28 Online:2013-04-22 Published:2013-04-24

摘要: 通过水提、酸沉法得到锦灯笼果实提取物,其中蛋白质含量为188 mg/g(以提取物干重计),共含有18种氨基酸,其中8种人体必需氨基酸占氨基酸总量的31%。基于鸟枪法蛋白质组学的分析方法,用纳升级反相液相色谱-串联质谱(nano-RPLC-MS/MS)系统分析锦灯笼果实提取物中蛋白质的酶解产物,结合数据库检索,共鉴定得到60种蛋白质;通过生物信息学分析,得到锦灯笼提取物中的蛋白质具有催化活性、抗氧化活性、酶调节活性、养分贮液囊活性、运输活性、结合活性六大生物活性,其中鉴定到与抗氧化相关的蛋白质有3种,为锦灯笼中蛋白质的功能性质的进一步研究奠定了基础。

关键词: 蛋白质, 锦灯笼, 纳升级反相液相色谱-串联质谱

Abstract: The protein was extracted from Physalis alkekengi L. var. franchetii (Mast.) Makino fruit by using water extraction and acid precipitation methods, and it consisted of 188 mg/g of protein on dry basis of the extract. Among 18 amino acids, eight essential amino acids for human account for 31% were found in this extract. Based on shotgun proteomics method, the protein extracted from Physalis fruit was analysed by nanoflow reversed-phase liquid chromatography-tandem mass spectrometry (nano-RPLC-MS/MS) system. Combined with database searches and bioinformatics analysis, the protein species and six molecular functions were identified, including with catalytic activity, antioxidant activity, enzyme regular activity, nutrient reservoir activity, transporter activity and binding activity. And three antioxidant activity-related proteins were identified. These results may lay the foundation for further study of the functional properties of the proteins in Physalis fruit.

Key words: Physalis alkekengi L. var. franchetii (Mast.) Makino, nanoflow reversed-phase liquid chromatography-tandem mass spectrometry (nano-RPLC-MS/MS), protein

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