An alkali-resistant zirconium-biligand organic framework with dual-metal centers for highly selective capture of phosphopeptides.
Analyst
; 148(1): 85-94, 2022 Dec 20.
Article
em En
| MEDLINE
| ID: mdl-36444932
ABSTRACT
The stability of MOFs plays one of the most important roles in material applications, while the delicate structure of MOFs suffers from the limitation of poor alkali tolerance. A new biligand Zr-MOF (biUIO-66-NH2NO2) with alkali-resistance performance and active functional groups has been synthesized in this study. The biUIO-66-NH2NO2 demonstrated a much better stability in 1% NH3·H2O solution than its parent material, UIO-66-NH2. Following further immobilization of Zr4+ ions, the biDZMOF consisting of dual-zirconium centers was prepared and was further applied in global enrichment of phosphopeptides by avoiding the instability of enrichment materials in the essential alkali elution procedure for the phosphopeptide enrichment workflow. The alkali-resistant elution of phosphopeptides from the biDZMOF can be directly coupled to a tandem mass spectrometry system for peptide analysis without desalting treatment. 425 phosphopeptides in total in 3 independent samples were identified from 10 µL human saliva after enrichment with biDZMOF. The improvement in alkali resistance and successful post-modification of biUIO-66-NH2NO2 suggest an efficient strategy to develop new types of MOF materials for application.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fosfopeptídeos
/
Zircônio
Limite:
Humans
Idioma:
En
Revista:
Analyst
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
China