Isolation and characterization of Korean pine (Pinus koraiensis) convicilin

被引:9
作者
Jin, Tengchuan [1 ]
Wang, Yang [1 ]
Chen, Yu-Wei [1 ]
Albillos, Silvia M. [2 ]
Kothary, Mahendra H. [3 ]
Fu, Tong-Jen [4 ]
Tankersley, Boyce [5 ]
McHugh, Tara H. [6 ]
Zhang, Yu-Zhu [1 ,6 ]
机构
[1] Illinois Inst Technol, Dept Biol & Chem Sci, Chicago, IL 60616 USA
[2] Illinois Inst Technol, Inst Food Safety & Hlth, Bedford Pk, IL 60501 USA
[3] US FDA, Ctr Food Safety & Appl Nutr, Laurel, MD 20708 USA
[4] US FDA, Inst Food Safety & Hlth, Bedford Pk, IL 60501 USA
[5] Chicago Bot Garden, Chicago, IL 60022 USA
[6] USDA ARS, Hlth Proc Foods Res Unit, Western Reg Res Ctr, Albany, CA 94710 USA
关键词
Storage protein; Chemical denaturation; Stability; Potential allergen; Protein folding; PISUM-SATIVUM-L; SEED STORAGE PROTEIN; MAJOR ALLERGENS; PEA VICILIN; NUTS; PURIFICATION; ANAPHYLAXIS; SUBUNITS;
D O I
10.1016/j.plaphy.2014.03.019
中图分类号
Q94 [植物学];
学科分类号
071001 [植物学];
摘要
A vicilin-like globulin seed storage protein, termed convicilin, was isolated for the first time from Korean pine (Pinus koraiensis). SDS-PAGE analysis revealed that Korean pine convicilin was post-translationally processed. The N-terminal peptide sequences of its components were determined. These peptides could be mapped to a protein translated from an embryo abundant transcript isolated in this study. Similar to vicilin, native convicilin appeared to be homotrimeric. Differential scanning calorimetry (DSC) analyses revealed that this protein is less resistant to thermal treatment than Korean pine vicilin. Its transition temperature was 75.57 degrees C compared with 84.13 degrees C for vicilin. The urea induced folding-unfolding equilibrium of pine convicilin monitored by intrinsic fluorescence could be interpreted in terms of a two-state model, with a C-m of 4.41 +/- 0.15 M. Published by Elsevier Masson SAS.
引用
收藏
页码:97 / 104
页数:8
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