Nuclear magnetic resonance solution structure of Pisum sativum defensin 2 provides evidence for the presence of hydrophobic surface-clusters.
Proteins
; 88(1): 242-246, 2020 01.
Article
em En
| MEDLINE
| ID: mdl-31294889
Pisum sativum defensin 2 (Psd2) is a small (4.7 kDa) antifungal peptide whose structure is held together by four conserved disulfide bridges. Psd2 shares the cysteine-stabilized alpha-beta (CSαß) fold, which lacks a regular hydrophobic core. All hydrophobic residues are exposed to the surface, except for leucine 6. They are clustered in the surface formed by two loops, between ß1 and α-helix and ß2 and ß3 sheets. The observation of surface hydrophobic clusters reveals a remarkable evolution of the CSαß fold to expose and reorganize hydrophobic residues, which facilitates creating versatile binding sites.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas de Plantas
/
Pisum sativum
/
Defensinas
Idioma:
En
Revista:
Proteins
Assunto da revista:
BIOQUIMICA
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Estados Unidos