2005
The fucose-binding lectin from Ralstonia solanacearum: a new type of beta-propeller architecture formed by oligomerisation and interacting with fucoside, fucosyllactose and plant xyloglucan
KOSTLÁNOVÁ, Nikola, Edward MITCHELL, Hugues LORTAT-JACOB, Stefan OSCARSON, Martina LAHMANN et. al.Základní údaje
Originální název
The fucose-binding lectin from Ralstonia solanacearum: a new type of beta-propeller architecture formed by oligomerisation and interacting with fucoside, fucosyllactose and plant xyloglucan
Název česky
Fukosu vazajici lektin z Ralstonia solanacearum: novy typ beta barelu tvoreny oligomerizaci a interakce s fukosidem, fukosyllaktosou a rostlinnym xyloglukanem
Autoři
KOSTLÁNOVÁ, Nikola (203 Česká republika), Edward MITCHELL (826 Velká Británie a Severní Irsko), Hugues LORTAT-JACOB (250 Francie), Stefan OSCARSON (752 Švédsko), Martina LAHMANN (752 Švédsko), Nechama GILBOA-GARBER (376 Izrael), Gerard CHAMBAT (250 Francie), Michaela WIMMEROVÁ (203 Česká republika, garant) a Anne IMBERTY (250 Francie)
Vydání
Journal of Biological Chemistry, Bethesda, USA, Amer. Soc. Biochem. Mol. Biol. 2005, 0021-9258
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 5.854
Kód RIV
RIV/00216224:14310/05:00013768
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000230678600045
Klíčová slova anglicky
lectin; Ralstonia solanacearum; crystal structure; propeller; SPR
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 4. 1. 2007 15:32, prof. RNDr. Michaela Wimmerová, Ph.D.
V originále
Plant pathogens, as animal ones, use protein-carbohydrate interactions in their strategy for host recognition, attachment and invasion. The bacterium Ralstonia solanacearum which is distributed worldwide and causes lethal wilt in many agricultural crops, was shown to produce a potent L-fucose-binding lectin, RSL, a small protein of 90 amino acids with a tandem repeat in its amino acid sequence. In the present study, surface plasmon resonance experiments conducted on a series of oligosaccharides show a preference for binding to áFuc1-2Gal and áFuc1-6Gal epitopes. Titration microcalorimetry demonstrates the presence of two binding sites per monomer and an unusually high affinity of the lectin for áFuc1-2Gal containing oligosaccharides (KD 2.5 10-7 M for 2-fucosyllactose). RSL has been crystallised with a methyl derivative of fucose and with the highest affinity ligand, 2-fucosyllactose. X-ray crystal structures, the one with á-methyl-fucoside being at ultra-high resolution, reveal that each monomer consists of two small fourstranded anti-parallel â-sheets. Trimerisation through 3-fold or pseudo 3- fold axis generates a six-bladed â-propeller architecture, very similar to that previously described for the fungal lectin of Aleuria aurantia. This is the first report of a â- propeller formed by oligomerisation and not by sequential domains. Each monomer presents two fucose binding sites, resulting in six symmetrically arranged sugar binding sites for the â-propeller. Crystals were also obtained for a mutated lectin complexed with a fragment of xyloglucan, a fucosylated polysaccharides from the primary cell wall of plants, which may be the biological target of the lectin.
Česky
Fukosu vazajici lektin z Ralstonia solanacearum: novy typ beta barelu tvoreny oligomerizaci a interakce s fukosidem, fukosyllaktosou a rostlinnym xyloglukanem
Návaznosti
LN00A016, projekt VaV |
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MSM0021622413, záměr |
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