Characterization of the iron-binding properties of pyoverdine using electron-capture dissociation-tandem mass spectrometry

Characterization of the iron-binding properties of pyoverdine using electron-capture dissociation-tandem mass spectrometry
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使用电子捕获解离串联质谱法表征吡咯丁的铁结合特性

DOI:
10.1007/s10534-015-9895-z
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发表时间:
2016
期刊:
影响因子:
3.5
通讯作者:
Volmer DA
Volmer DA
中科院分区:
生物学3区
文献类型:
--
作者:
Hayen H;Volmer DA

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绿脓杆菌素(PVD)是由荧光假单胞菌产生的一类铁载体。PVD变体的鉴定主要依赖于使用碰撞诱导解离(CID)的液相色谱-串联质谱(LC-MS/MS)。在这里,CID和新的解离技术电子捕获解离(ECD)被施加到表征PVD琥珀酰胺和它的Fe(III)-螯合复合物。结果清楚地表明,ECD产生PVD肽链的诊断性侧链断裂,并与CID相比保留了与发色团结合的不稳定Fe(III)。因此,预计ECD技术将支持应变特定的铁(III)的PVDs传输过程的理解。
Pyoverdines (PVD) are a group of siderophores produced by fluorescentPseudomonads. Identification of PVD variants mostly relies on liquid chromatography-tandem mass spectrometry (LC–MS/MS) using collision-induced dissociation (CID). Here, both CID and the novel dissociation technique electron-capture dissociation (ECD) were applied to characterize PVD succinamide and its Fe(III)-chelated complex. The results clearly showed that ECD produced diagnostic side chain fragmentation of the PVD peptide chain and preserved the labile Fe(III) binding to the chromophore in contrast to CID. The ECD technique is therefore expected to support the understanding of strain-specific Fe(III) transport processes of PVDs.
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影响因子: 3.2
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