期刊
BIOCHIMICA ET BIOPHYSICA ACTA-GENERAL SUBJECTS
卷 1800, 期 4, 页码 481-485出版社
ELSEVIER
DOI: 10.1016/j.bbagen.2010.01.011
关键词
Cysteine-rich secretory protein; alpha B-1-glycoprotein; Kininogen; Animal serum; Protein complex; Mass spectrometry
资金
- Lundbeck Foundation
- Novo Nordic Foundation
Background: CRISP-3 was previously shown to be bound to alpha B-1-glycoprotein (A1BG) in human serum/plasma. All mammalian sera are supposed to contain A1BG, although its presence in rodent sera is not well-documented. Since animal sera are often used to supplement buffers in experiments, in particular such that involve cell cultures, binding proteins present in sera might interfere in the experiments. Methods: We examined sera from five different animal species for CRISP-3 binding proteins using gel filtration and ligand blotting. We developed a rapid method for isolation of proteins that bind to human CRISP-3 and identified the isolated proteins by mass spectrometry and N-terminal sequencing. Results: We identified A1BG as a CRISP-3 binding protein in sera from cow, horse and rabbit. CRISP-3 bound kininogen I in mouse serum, whereas rat serum showed no CRISP-3 binding activity. In equine serum, we furthermore detected a possible CRISP, already bound to A1BG. General significance: It seems to be a common mechanism that A1BGs bind CRISPs, also across species. Apart from the possible physiological implications hereof, complex binding of CRISPs by AIBG (and other proteins) may interfere with the detection and function of CRISPs, when these are studied in the presence of animal sera. (c) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据