http://www.cnr.it/ontology/cnr/individuo/prodotto/ID181590
Structure, conformation and biological activity of a novel lipodepsipeptide from Pseudomonas corrugata: cormycin A1 (Articolo in rivista)
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- Structure, conformation and biological activity of a novel lipodepsipeptide from Pseudomonas corrugata: cormycin A1 (Articolo in rivista) (literal)
- Anno
- 2004-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1042/BJ20040422 (literal)
- Alternative label
Andrea SCALONI; Mauro DALLA SERRA; Pietro AMODEO; Luisa MANNINA; Rosa Maria VITALE; Anna Laura SEGRE;
Oscar CRUCIANI; Francesca LODOVICHETTI; Maria Luigia GRECO; Alberto FIORE; Monica GALLO;
Chiara D'AMBROSIO; Manuela CORAIOLA; Gianfranco MENESTRINA; Antonio GRANITI; Vincenzo FOGLIANO (2004)
Structure, conformation and biological activity of a novel lipodepsipeptide from Pseudomonas corrugata: cormycin A1
in Biochemical journal (Online)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Andrea SCALONI; Mauro DALLA SERRA; Pietro AMODEO; Luisa MANNINA; Rosa Maria VITALE; Anna Laura SEGRE;
Oscar CRUCIANI; Francesca LODOVICHETTI; Maria Luigia GRECO; Alberto FIORE; Monica GALLO;
Chiara D'AMBROSIO; Manuela CORAIOLA; Gianfranco MENESTRINA; Antonio GRANITI; Vincenzo FOGLIANO (literal)
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- *Proteomics and Mass Spectrometry Laboratory, I.S.P.A.A.M., National Research Council, 80147 Naples, Italy, +ITC and Institute of Biophysics, National Research Council, 38050 Povo
(Trento), Italy, ?Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche, 80078 Pozzuoli (Naples), Italy, §Dipartimento di Scienze e Tecnologie Agroalimentari,
Ambientali e Microbiologiche, Universit`a di Molise, 86100 Campobasso, Italy, ?Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, 80134 Napoli, Italy,
¶Institute of Chemical Methodologies, National Research Council, 00016 Monterotondo Stazione (Rome), Italy, **Dipartimento di Biologia e Patologia Vegetale, Universit`a di Bari,
70126 Bari, Italy, and ++Dipartimento di Scienza degli Alimenti, Universit`a di Napoli \"Federico II\", Parco Gussone, Edificio 84, 80055 Portici (Naples), Italy (literal)
- Titolo
- Structure, conformation and biological activity of a novel lipodepsipeptide from Pseudomonas corrugata: cormycin A1 (literal)
- Abstract
- Cationic lipodepsipeptides from Pseudomonas spp. have been
characterized for their structural and antimicrobial properties.
In the present study, the structure of a novel lipodepsipeptide,
cormycin A, produced in culture by the tomato pathogen Pseudomonas
corrugata was elucidated by combined protein chemistry,
mass spectrometry and two-dimensional NMR procedures. Its
peptide moiety corresponds to L-Ser-D-Orn-L-Asn-D-Hse-L-His-
L-aThr-Z-Dhb-L-Asp(3-OH)-L-Thr(4-Cl) [where Orn represents
ornithine, Hse is homoserine, aThr is allo-threonine, Z-Dhb is 2,3-
dehydro-2-aminobutanoic acid, Asp(3-OH) is 3-hydroxyaspartic
acid and Thr(4-Cl) is 4-chlorothreonine], with the terminal carboxy
group closing a macrocyclic ring with the hydroxy group
of the N-terminal serine residue. This is, in turn, N-acylated by
3,4-dihydroxy-esadecanoate. In aqueous solution, cormycin A
showed a rather compact structure, being derived from an inward
orientation of some amino acid side chains and from the 'hairpinbent'
conformation of the lipid, due to inter-residue interactions
involving its terminal part. Cormycin was significantly more active
than the other lipodepsipeptides from Pseudomonas spp., as
demonstrated by phytotoxicity and antibiosis assays, as well as by
red-blood-cell lysis. Differences in biological activity were putatively
ascribed to its weak positive net charge at neutral pH. Planar
lipid membrane experiments showed step-like current transitions,
suggesting that cormycin is able to form pores. This ability was
strongly influenced by the phospholipid composition of the membrane
and, in particular, by the presence of sterols. All of these
findings suggest that cormycin derivatives could find promising
applications, either as antifungal compounds for topical use or as
post-harvest biocontrol agents. (literal)
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