Fragmentation Analysis of rIAPP Monomer, Dimer, and [M rIAPP + M hIAPP ] 5+ Using Collision-Induced Dissociation with Electrospray Ionization Mass SpectrometryFragmentation Analysis of rIAPP Monomer, Dimer, and [M rIAPP + M hIAPP ] 5+ Using Collision-Induced Dissociation with Electrospray Ionization Mass Spectrometry
- Other Titles
- Fragmentation Analysis of rIAPP Monomer, Dimer, and [M rIAPP + M hIAPP ] 5+ Using Collision-Induced Dissociation with Electrospray Ionization Mass Spectrometry
- Authors
- Jeongmo Kim; 김호태
- Issue Date
- Dec-2021
- Publisher
- 사단법인 한국질량분석학회
- Keywords
- rat islet amyloid polypeptide (rIAPP); human islet amyloid polypeptide (hIAPP); heterogeneous dimer; collision- induced dissociation mass spectrometry (CID-MS); MS/MS
- Citation
- Mass Spectrometry Letters, v.12, no.4, pp 179 - 185
- Pages
- 7
- Journal Title
- Mass Spectrometry Letters
- Volume
- 12
- Number
- 4
- Start Page
- 179
- End Page
- 185
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/25786
- DOI
- 10.5478/MSL.2021.12.4.179
- ISSN
- 2233-4203
2093-8950
- Abstract
- Collision-induced dissociation (CID) combined with electrospray ionization mass spectrometry (ESI-MS) was used to obtain structural information on rat islet amyloid polypeptide (rIAPP) monomers (M) and dimers (D) observed in the multiply charged state in the MS spectrum. MS/MS analysis indicated that the rIAPP monomers adopt distinct structures depending on the molecular ion charge state. Peptide bond dissociation between L 27 and P 28 was observed in the MS/MS spectra of rIAPP monomers, regardless of the monomer molecular ion charge state. MS/MS analysis of the dimers indicated that D 5+ comprised M 2+ and M 3+ subunits, and that the peptide bond dissociation process between the L 27 and P 28 residues of the monomer subunit was also maintained. The observation of (M+ b 27 ) 4+ and (M+ y 10 ) 3+ fragment ions were deduced to originate from the two differ- ent D 5+ complex geometries, the N-terminal and C-terminal interaction geometries, respectively. The fragmentation pattern of the [M rIAPP + M hIAPP ] 5+ MS/MS spectrum showed that the interaction occurred between the two N-terminal regions of M rIAPP and M hIAPP in the heterogeneous dimer (hetero-dimer) D 5+ structure.
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Collections - Department of Applied Chemistry > 1. Journal Articles
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