Cyclic heptapeptides with metal binding properties isolated from the fungus Cadophora malorum from Antarctic soil.
Nat Prod Bioprospect
; 12(1): 26, 2022 Jul 14.
Article
em En
| MEDLINE
| ID: mdl-35831516
The Antarctic fungus Cadophora malorum produces previously undescribed cyclic heptapeptides (cadophorin A and B) containing an anthranilic acid residue. The planar structure of these peptides was determined by high-resolution mass spectrometry combined with extensive 1D and 2D NMR spectroscopy. The absolute configuration of the amino acids was determined by Marfey's method, with HPLC analysis of FDVA (Nα-(2,4-dinitro-5-fluorphenyl)-L-valinamide) derivatives making use of a PFP column. Remarkably, cadophorin 2 possesses both the uncommon D-Ile and D-allo-Ile in its structure. The peptides have metal binding properties as shown by LCMS with post column addition of metal salt solutions. These results were supported by DFT calculations.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Nat Prod Bioprospect
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Argentina
País de publicação:
Alemanha