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1

Lipopolysaccharides from Mesorhizobium huakuii and Mesorhizobium ciceri: chemical and immunological comparative data

100%
Choma A.
Acta Biochimica Polonica
|
2002
|
tom 49
|
nr 4
Lipopolysaccharides of two Mesorhizobium species of different host specificity were compared: M. huakuii and M. ciceri. M. huakuii sp. was represented by five strains with special consideration of M. huakuii IFO 15243 T . SDS/PAGE profiles revealed that all M. huakuii LPS preparations contained low molecular mass fractions (LPS-II) of the same molecular size. All of lipopolysaccharides contained high molecular mass fractions (LPS-I). However, the high molecular mass fraction from each strain possessed an individual molecular size distribution pattern. The crossreactivity of blotted lipopolysaccharides with rabbit polyclonal antibodies against Mesorhizobium huakuii IFO 15243 whole bacteria in­dicated the presence of common epitope(s) within the investigated Mesorhizobium huakuii strains. Moreover, LPS from M. huakuii S52 also reacted with anti M. ciceri HAMBI 1750 serum showing that there are epitopes common for different mesorhizobial species. LPS isolated from Mesorhizobium huakuii strain IFO 15243T contained neutral sug­ars: L-6-deoxytalose, L-rhamnose, D-galactose and D-glucose, aminosugars: D-quinovosamine, D-glucosamine, D-2,3-diamino-2,3-dideoxyglucose and D-galacturonic and D-glucuronic acids. In the LPS preparation, fatty acids typical for Mesorhizobium strains were detected. 3-Hydroxydodecanoic, 3-hydroxy-iso-tri- decanoic, 3-hydroxyeicosanoic, 3-hydroxyheneicosanoic and 3-hydroxydocosenoic ac­ids were the major amide linked fatty acids, while iso-heptadecanoic, eicosanoic, docosenoic, as well as 27-hydroxyoctacosanoic and 27-oxooctacosanoic acids were the dominant ester linked fatty residues.
2

Straight and branched (ω-1)-hydroxylated very long chain fatty acids are components of Bradyrhizobium lipid A

63%
Choma A., Komaniecka I.
Acta Biochimica Polonica
|
2011
|
tom 58
|
nr 1
 Lipopolysaccharides of seven Bradyrhizobium strains and three whole-cell fatty acid preparations from bacteria isolated from nodules of Sarothamnus scoparius (Common Broom) were studied for the presence of very long chain (ω-1)-hydroxy fatty acids. Several such fatty acids were identified. Among them, straight-chain as well as mono- and dimethyl branched acids with chains in the range from 26 to 34 carbon atoms were found. Pyrrolidides and 4,4-dimethyloxazoline derivatives were used to determine the branching position. Carbons at the (ω-10) and/or (ω-11) positions in alkyl chains were points of attachment of methyl groups. These data complete the structure of bradyrhizobial lipid A with important details. The obtained results can be applied in the chemotaxonomy of Bradyrhizobium.
3

Peryplazmatyczne beta-glukany bakterii Gram-ujemnych

63%
Komaniecka I., Choma A.
Postępy Mikrobiologii
|
2008
|
tom 47
|
nr 1
35-42
4

Skladniki lipidowe Rhizobiaceae

63%
Komaniecka I., Choma A.
Postępy Mikrobiologii
|
2001
|
tom 40
|
nr 1
7-30
5

Characterisation of Mesorhizobium huakuii cyclic beta-glucan

63%
Choma A., Komaniecka I.
Acta Biochimica Polonica
|
2003
|
tom 50
|
nr 4
Periplasmic and extracellular glucans of Mesorhizobium huakuii were isolated and characterized by compositional and MALDI-TOF analyses, as well as 1H and 13C NMR spectroscopy. It was shown that M. huakuii produces a cyclic β-glucan composed entirely of nonbranched glucose chains and unmodified by nonsugar substituents. The degree of polymerisation of the cyclic oligosaccharides was estimated to be in the range from 17 to 28. The most abundant glucan molecules contained 22 glucose residues. Glucose residues within the glucan were connected by β-(1,2) glycosidic linkages. The cyclic glucan produced by M. huakuii is quite similar to the periplasmic β-(1,2) glucans synthesized by Agrobacterium and Sinorhizobium genera. The synthesis of β-glucan in M. huakuii is osmoregulated and this glucan could function as an osmoprotectant in free living cells.
6

Bifidogenic and antioxidant activity of exopolysaccharides produced by Lactobacillus rhamnosus E/N cultivated on different carbon sources

51%
Polak-Berecka M., Wasko A., Szwajgier D., Choma A.
Polish Journal of Microbiology
|
2013
|
tom 62
|
nr 2
Lactobacillus rhamnosus E/N is a probiotic bacterium, which synthesizes exopolysaccharides (EPS) with significant bifidogenic and antioxidant activities. The sugar composition of the EPSs produced depended on carbohydrates used as a carbon source in the growth media. Five Bifidobacterium strains were tested in vitro for their ability to utilize all the EPSs studied. The highest bifidogenic activity was revealed by EPSs obtained from Lactobacillus cultures supplemented with Gal, Lac, and Mal as the only carbon source, while significant antioxidant effects were observed in EPSs isolated from growth media enriched with galactose, lactose, and sucrose.
7

Siderophore containing 2,3-dihydroxybenzoic acid and threonine formed by Rhizobium trifolii

51%
Skorupska A., Choma A., Derylo M., Lorkiewicz Z.
Acta Biochimica Polonica
|
1988
|
tom 35
|
nr 2
8

Studies on the periplasmic beta-glucans from Mesorhizobium huakuii IFO 15243T

51%
Choma A., Komaniecka I., Russa R., Dolecka J.
Acta Biochimica Polonica
|
2003
|
tom 50
|
nr Supplement 1
9

Siderophore activity in Rhizobium species isolated from different legumes

51%
Derylo M., Choma A., Puchalski B., Suchanek W.
Acta Biochimica Polonica
|
1994
|
tom 41
|
nr 1
Rhizobium strains isolated from nodules of the different legumes including wild-growing plants were examined for their siderophore activity. Fifteen of the 84 screened rhizobial strains were able to grow under conditions of limited iron supply. Nine of them gave orange halos in the assay with Chrom azurol S. Among these strains were Rhizobium sp. (Ononis) and Rhizobium (Genista), producing hydroxamates and phenolates. These compounds could promote the growth of siderophore-negative bacteria on iron-deficient media. The results imply that the hydroxamates from G1 and Ol strains may belong to the monohydroxamate class of siderophores.
10

Rhizobium strains differ considerably in outer membrane permeability and polymyxin B resistance

39%
Komaniecka I., Zamlynska K., Zan R., Staszczak M., Pawelec J., Seta I., Choma A.
Acta Biochimica Polonica
|
2016
|
tom 63
|
nr 3
11

Size distribution profiles and noncarbohydrate composition of exopolysaccharides from wild-type and pssB mutant of Rhizobium leguminosarum bv. Trifolii TA

39%
Kutkowska J., Janczarek M., Choma A., Komaniecka I., Turska-Szewczuk A., Urbanik-Sypniewska T.
Acta Biochimica Polonica
|
2003
|
tom 50
|
nr Supplement 1
12

Structural variants of the lipopolysaccharide core region among mesophilic aeromonas species

39%
Turska-Szewczuk A., Pakiet K., Pekala a, Pietras H., Komaniecka I., Karas M., Choma A.
Postępy Mikrobiologii. Suplement
|
2017
|
tom 56
|
nr 1
13

Characterisation of the periplasmic beta-glucans isolated from Azorhizobium caulinodans HAMBI 21

39%
Komaniecka I., Choma A., Urbanik-Sypniewska T., Russa R., Turska-Szewczuk A., Koltun J.
Acta Biochimica Polonica
|
2003
|
tom 50
|
nr Supplement 1
14

Characterization of two lipopolysaccharide types isolated from Rhizobium galegae

39%
Rasanen L. A., Russa R., Urbaniak T., Choma A., Mayer H., Lindstrom K.
Acta Biochimica Polonica
|
1997
|
tom 44
|
nr 4
Lipopolysaccharides (LPS) of Rhizobium galegae, a symbiotically nitrogen-fixing species of root-nodule bacteria, were isolated by the phenol-water method from strain HAMBI 1461, the LPS of which resembled enterobacterial smooth type LPS, and from strains HAMBI 1174 and HAMBI 1208, the LPSs of which resembled rough type LPS. The results of PAGE analysis of LPSs, Bio-Gel P2 gel filtration of polysaccharide fractions and the presence of deoxysugars and 4-O-methyl-deoxysugar both in the rough and smooth LPSs suggested that rough LPS contained a short O-antigenic polysaccharide for which we propose the name short O-chain LPS. Accordingly, the smooth LPS is called long O-chain LPS. Despite of the differences in the structure of LPS of R. galegae, all strains were equally effective in nodulating their hosts. The short O-chain LPS of R. galegae showed many features similar to those of phylogenetically related agrobacteria.
15

Occurrence of lipopolysaccharide alterations among Tn5 mutants of Rhizobium leguminosarum bv.trifolii strain 24.1 with altered colony morphology

39%
Szyprowska S., Choma A., Glowacka M., Gronek E., Kitlinska A., Rola M.
Acta Biochimica Polonica
|
1998
|
tom 45
|
nr 4
Transposon mutants of Rhizobium leguminosarum bv. trifolii 24.1 showing less glossy or smaller colonies were screened for properties usually associated with lipopolysaccharide (LPS) defects in R. leguminosarum, i.e. motility, growth rate, tendency to agglutination in liquid media and symbiotic efficiency. Neither any of the above mutants nor the earlier isolated 24.12 strain, defective in LPS, showed all these properties changed simultaneously. According to PAGE/sodium deoxycholate analysis the mutant 24.12 was the only one producing defective lipopolysaccharide. GC-MS analysis revealed in this mutant qualitative changes in composition of its LPS in comparison with LPS isolated from the parent strain. Other Tn5 mutants produced LPSs similar in composition, however the proportion between LPS I and LPS II differed from that in the parent strain.
16
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Fruiting bodies of Hericium erinaceus (Bull.) Pers. - a new source of water-insoluble (1→3)-alfa-d-glucan

33%
Wiater A., Choma A., Komaniecka I., Pleszczynska M., Siwulski M., Polak p., Janusz G., Szczodrak J.
Acta Societatis Botanicorum Poloniae
|
2016
|
tom 85
|
nr 3
A water-insoluble polysaccharide (WIP) was isolated from the fruiting bodies of Hericium erinaceus HE01 by an alkaline solution with the yield of 5%. Structural and compositional analyses by total acid hydrolysis, methylation analysis, FT-IR, FT-Raman, and ¹H NMR spectroscopy as well as other instrumental techniques showed predominantly glucose linked by α-glycosidic bonds and small amounts of mannose, xylose, rhamnose, galactose, and ribose. The methylation analysis showed that (1→3)-linked Glcp is the major constituent (70.8%) of the polymer, while the 3,4 substituted d-Glcp represents the main branching residue of the glucan. The presence of (1→3)-α-d-glucan in the hyphae of H. erinaceus was additionally confirmed by the use of specific fluorophore-labeled antibodies.
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