1
|
|
2
|
Baré S, Coiro VM, Scaloni A, Di Nola A, Paci M, Segre AL, Ballio A. Conformations in solution of the fuscopeptins. Phytotoxic metabolites of Pseudomonas fuscovaginae. Eur J Biochem 1999; 266:484-92. [PMID: 10561589 DOI: 10.1046/j.1432-1327.1999.00883.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Fuscopeptins are phytotoxic amphiphilic lipodepsipeptides containing 19 amino acid residues. They are produced by the plant pathogenic bacterium Pseudomonas fuscovaginae in two forms, A and B, which differ only in the number of methylene groups in the fatty acid chain. Their covalent structure and biological properties have been reported previously. CD and NMR spectroscopy investigations in solution revealed the absence of identifiable elements of secondary and tertiary structure for these molecules. Fuscopeptin B appears to be completely unstructured in aqueous solution, and has a large molecular flexibility. A dramatic conformational change was observed upon addition of trifluoroethanol. This study reports the complete interpretation of the two-dimensional NMR spectra and the NOE results obtained for fuscopeptin B in water/trifluoroethanol solutions; the signals relative to the peptidic moiety are identical to those observed for fuscopeptin A. The results of this investigation were used to determine the solution structure of fuscopeptin B by computer simulations applying distance geometry and simulated annealing procedures. In water/trifluoroethanol solutions the peptidic region appears to have a partly helical structure. The lactonic ring assumes defined conformations very similar to those already reported for other lipodepsipeptides. The structure for fuscopeptin B in solution is also valid for fuscopeptin A because of the negligible structural difference between the two metabolites.
Collapse
Affiliation(s)
- S Baré
- Istituto di Strutturistica Chimica G. Giacomello, CNR, Montelibretti, Italy
| | | | | | | | | | | | | |
Collapse
|
3
|
Coiro VM, Segre AL, Di Nola A, Paci M, Grottesi A, Veglia G, Ballio A. Solution conformation of the Pseudomonas syringae MSU 16H phytotoxic lipodepsipeptide Pseudomycin A determined by computer simulations using distance geometry and molecular dynamics from NMR data. Eur J Biochem 1998; 257:449-56. [PMID: 9826192 DOI: 10.1046/j.1432-1327.1998.2570449.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Pseudomycin A is a cyclic lipodepsinonapeptide phytotoxin produced by a strain of the plant pathogenic bacterium Pseudomonas syringae. Like other members of this family of bacterial metabolites, it is characterised by a fatty acylated cyclic peptide with mixed chirality and lactonic closure. Several biological activities of Pseudomycin A are lower than those found for some of its congeners, a difference which might depend on the diverse number and distribution of charged residues in the peptide moiety. Hence, it was of interest to investigate its conformation in solution. After the complete interpretation of the two-dimensional NMR spectra, NOE data were obtained and the structure was determined by computer simulations, applying distance geometry and molecular dynamics procedures. The conformation of the large ring of Pseudomycin A in solution includes three rigid structural regions interrupted by three short flexible regions that act as hinges. The overall three-dimensional structure of the cyclic moiety is similar to that of previously studied bioactive lipodepsinonapeptides produced by other pseudomonads.
Collapse
Affiliation(s)
- V M Coiro
- Istituto di Strutturistica Chimica G. Giacomello, CNR, Dipartimento di Chimica, Università di Roma La Sapienza, Rome, Italy.
| | | | | | | | | | | | | |
Collapse
|
4
|
|
5
|
Candeloro De Sanctis S, Coiro VM, Mazza F, Pochetti G. The inclusion compound of deoxycholic acid with (–)-camphor: a structural and energetic study. Acta Crystallogr B Struct Sci 1995. [DOI: 10.1107/s0108768194008359] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
6
|
Coiro VM, Mazza F. Crystal phases of dodecyl sulfates obtained from aqueous solutions: structure of the hexaaquamagnesium salt. Acta Crystallogr C 1991. [DOI: 10.1107/s0108270190012598] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
7
|
Bachechi F, Coiro VM, Delfini M, Settimj G. Structure and NMR spectra of N-[2-(α-hydrazonobenzyl)-3-benzofuranyl]-p-toluenesulfonamide. Acta Crystallogr C 1991. [DOI: 10.1107/s0108270190007399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
8
|
|
9
|
|
10
|
|
11
|
|
12
|
Coiro VM, Manigrasso M, Mazza F, Pochetti G. Structure of a triclinic phase of sodium dodecyl sulfate monohydrate. A comparison with other sodium dodecyl sulfate crystal phases. Acta Crystallogr C 1987. [DOI: 10.1107/s010827018709382x] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
13
|
Coiro VM, Mazza F, Pochetti G. Crystal phases obtained from aqueous solutions of sodium dodecyl sulfate. The structure of a monoclinic phase of sodium dodecyl sulfate hemihydrate. Acta Crystallogr C 1986. [DOI: 10.1107/s0108270186093757] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
14
|
Coiro VM, Mazza F, Pochetti G, Giglio E, Pavel NV. The structure of the 2/1 'channel' inclusion compound between deoxycholic acid and pinacolone, 2C24H40O4.C6H12O. Acta Crystallogr C 1985. [DOI: 10.1107/s0108270185003432] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
15
|
Coiro VM, Mazza F, Pochetti G, Giglio E. The crystal structure of the 2:1 inclusion compound between deoxycholic acid and pinacolone. Acta Crystallogr A 1984. [DOI: 10.1107/s0108767384091868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
16
|
Coiro VM, Giglio E, Mazza F, Pavel NV, Pochetti G. Structure of the 4:1 inclusion compound between deoxycholic acid and (E)-p-dimethylaminoazobenzene. ACTA ACUST UNITED AC 1982. [DOI: 10.1107/s0567740882009467] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
17
|
|
18
|
|
19
|
Coiro VM, D'Andrea A, Giglio E. The tetragonal phase of the 2:1:1 canal complex between deoxycholic acid, ethanol and water. ACTA ACUST UNITED AC 1979. [DOI: 10.1107/s0567740879011006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
20
|
Candeloro De Sanctis S, Coiro VM, Giglio E, Pagliuca S, Pavel NV, Quagliata C. The hexagonal phase of the 3:2:1 canal complex between deoxycholic acid, ethanol and water: an inclusion compound with hydrophilic channels. ACTA ACUST UNITED AC 1978. [DOI: 10.1107/s0567740878006998] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
|
21
|
Coiro VM, Mazza F, Mignucci G. The crystal structure and the conformational analysis of carbobenzoxyl-L-leucyl-p-nitrophenyl ester. ACTA ACUST UNITED AC 1974. [DOI: 10.1107/s0567740874007667] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
22
|
Coiro VM, Giglio E, Lucano A, Puliti R. Determination of the molecular packing in the crystal of 5α-androstan-3,17-dione by means of potential-energy calculations. ACTA ACUST UNITED AC 1973. [DOI: 10.1107/s0567740873004644] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
23
|
|
24
|
Coiro VM, Giacomello P, Giglio E. Determination of the molecular packing in the crystal of N,N'-dicyclohexylurea by means of potential-energy calculations. ACTA ACUST UNITED AC 1971. [DOI: 10.1107/s0567740871005430] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
25
|
|