ライフサイエンスコーパス: galactan

1 f all of the galactofuranose (Galf) units of galactan.

2 ble exo-galactanase activity against a lupin galactan.

3 irm as those with no detectable (1-->4)-beta-galactan.

4 from wall polymers containing beta(1-->4)-D-galactan.

5 ysaccharides, including xylan, arabinan, and galactan.

6 sensitivity as well as accumulation of B-1,4-galactan.

7 ited increases in tightly bound (1-->4)-beta-galactan.

8 ford an essential polysaccharide, termed the galactan.

9 rity of the Galf residues into mycobacterial galactan.

10 ce en route to assembly of the mycobacterial galactan.

11 sitivity as well as accumulation of beta-1,4-galactan.

12 ent polysaccharides, including B-glucans and galactans.

13 is hindered by beta-1,6 branches on beta-1,3-galactans.

14 ntially binds to fucoidan, beta-glucans, and galactans.

15 ble polysaccharides revealed the presence of galactans, 3,6-anhydro-alpha-L-galactopyranose, sulphate

16 ures through glycation with GOSs (61.2%) and galactan (36.7%) and also significant tertiary structura

17 -transferase GlfT2 mediates formation of the galactan, a polymer of galactofuranose residues that is

18 anionic, low-methylated pectins and sulfated galactans, a feature shared with the cell walls of all m

19 by repressing GALS1 expression and beta-1,4-galactan accumulation.

20 nce by repressing GALS1 expression and B-1,4-galactan accumulation.

21 related to C. eutactus, with glucomannan and galactans alternative substrates for some strains.

22 Thus, beta-(1-->4)-galactan and a specialized form of type II arabinogalact

23 saccharides to the two respective sets (anti-galactan and anti-dextran) of antibodies shows a distinc

24 dependence on UGE4 of pectic (1-->4)-beta-D-galactan and glucuronosyl-modified AGP biosynthesis is e

25 arides were comparable or superior to potato galactan and oranges homogalacturonan.

26 ified the structure of two EPSs as 1,6-alpha-galactan and partially acetylated polyethylene glycol.

27 beta-(1-->4)-Galactan and rhamnogalacturonan I backbone epitopes were

28 ration of the major surface polysaccharide d-galactan and the oligo(glycerol phosphate) backbone of t

29 ee major RG-I structural elements (arabinan, galactan and the rhamnogalacturonan backbone) for in sit

30 nly the backbone of 1,4-mannan and 1,6-alpha-galactan and through the Fucalpha1-2Gal, Fucalpha1-3/4Ma

31 beta-(1-->4)-Galactan and type II arabinogalactan were the main large

32 ssociated with novel deposition of beta(1,4)-galactan and with reduced amounts of xylan and mannan in

33 ies have shown the prebiotic influences that galactans and fructans can exert.

34 cluding peptidoglycan, arabinan, linker unit galactan, and lipoarabinomannan.

35 s beta-1,4-linked-galactans, beta-1,6-linked-galactans, and arabinogalactans, in addition to earlier

36 s that include alpha-1,5-arabinans, beta-1,4-galactans, and arabinogalactans.

37 The mobile domain contains galactan- and mannan-based polysaccharides, along with p

38 ea cotyledons, before and after (1-->4)-beta-galactan appearance, indicated that the cotyledons with

39 Pectic (1-->4)-beta-D-galactan appears in cotyledon cell walls at a defined st

40 des (starch, cellulose, beta-glucan, mannan, galactan, arabinan, xylan, xyloglucan, chitin) were succ

41 product of these steps, the lipid-linked-LU-galactan-arabinan has been partially characterized in te

42 increasing the extractability of arabinans, galactans, arabinogalactan proteins and mannans.

43 UGM and the galactan are essential in M. tuberculosis, but their imp

44 beta-1,4-Galactans are abundant polysaccharides in plant cell wal

45 at contains rhamnogalacturonan, arabinan and galactan as structural elements.

46 results in the persistence of (1-->4)-beta-d-galactan at the root surface and in epidermal, cortical

47 Arabidopsis AG is composed of a beta-(1-->3)-galactan backbone with beta-(1-->6)-d-galactan side chai

48 RG-I pectin epitopes such as beta-1,4-linked-galactans, beta-1,6-linked-galactans, and arabinogalacta

49 n of branched galactans from acacia gum by a galactan-beta-1,3-galactosidase from family GH43; howeve

50 ype IV collagen via a site distinct from its galactan binding site.

51 P-Galp mutase as the source of [14C]Galf for galactan biosynthesis and 5-P-[14C]ribosyl-P-P as a dono

52 To this end, we compare and contrast galactan biosynthesis in C. diphtheriae and M. tuberculo

53 Galactan biosynthesis in mycobacteria involves two glyco

54 Because galactan biosynthesis is essential for mycobacterial via

55 red alga Botryocladia occidentalis sulfated galactan (BoSG) were generated, structurally characteriz

56 s crispus is a marine red alga with sulfated galactans, called carrageenans, in its extracellular mat

57 Pol-P-P-LU-(Galf)1,2,3, etc. and Pol-P-P-LU-galactan, catalyzed by a bifunctional galactosyltransfer

58 ose-containing xyloglucan and arabinosylated galactan cell wall polymers in rhd1 back to wild-type le

59 backbone, in the length of the (1-->4)-beta-galactan chain and in the proportion of the arabinan sid

60 magnetic resonance, we show that increasing galactan chain length enhances pectin-cellulose spatial

61 pressing a suite of genes to increase pectic galactan chain length in the secondary cell wall.

62 es with activity against the D-arabinan or D-galactan components of arabinogalactan.

63 The most commonly found galactan configuration in pectins had no inhibition of t

64 We also found that the increased galactan content leads to fewer spatial contacts of cell

65 corresponding genes had a decreased beta-1,4-galactan content, and overexpression of GALS1 resulted i

66 resulted in plants with 50% higher beta-1,4-galactan content.

67 abinan are abundant in syncytial cell walls; galactan could not be detected.

68 sult suggested that better control of pectic galactan degradation and a better understanding of the d

69 RT than the enzymes involved in arabinan or galactan disassembly.

70 ptidoglycan complex, which has at its core a galactan domain composed of galactofuranose (Galf) resid

71 a novel enzyme responsible for "priming" the galactan domain for further elaboration by Emb, resultin

72 sferase that initiates the elongation of the galactan domain of AG.

73 hypothesis that such activity might regulate galactan entrapment and, thus, mechanical properties of

74 A galactan epitope is present in two woody plant cell wall

75 galacturonan-I-associated LM5 (1-->4)-beta-d-galactan epitope occurs in a restricted manner at the ro

76 y pattern to that of the LM5 linear beta-1,4-galactan epitope, which is detected only in companion ce

77 gical life span assay, WT cells treated with galactan EPS showed 8% increase in viability whereas sod

78 Purified PAM galactan exhibited broad-spectrum biofilm inhibition act

79 Furthermore, galactan exhibited protection against oxidative damage t

80 Galactan exhibited strong DPPH and nitric oxide scavengi

81 In the present study, galactan exopolysaccharide (EPS) from Weissella confusa

82 Carrageenans are sulfated alpha-1,3-beta-1,4-galactans found in the cell wall of some red algae that

83 ive loss of pectin-associated (1-->4)-beta-D-galactan from the cell walls, whereas a selective loss o

84 Galactan from W. confusa KR780676 has immense potential

85 ary for the sequential digestion of branched galactans from acacia gum by a galactan-beta-1,3-galacto

86 Agars are sulfated galactans from red macroalgae and are composed of a d-ga

87 e of the strains also grew on galactomannan, galactan, glucomannan and starch.

88 pening and capable of degrading tomato fruit galactan, has been purified, cloning of the correspondin

89 eta(1-->6)-D-galactopyranotetraose with anti-galactan IgA X24 indicate that the monosaccharide has no

90 ases was sufficient for the synthesis of PAM galactan in Escherichia coli.

91 alt stress induces the accumulation of B-1,4-galactan in root cell walls by up regulating the express

92 stress induces the accumulation of beta-1,4-galactan in root cell walls by up regulating the express

93 demonstrate a specific function of beta-1,4-galactan in salt hypersensitivity.

94 we demonstrate a specific function of B-1,4-galactan in salt hypersensitivity.

95 ted by H(2)O(2) was extensively scavenged by galactan in the medium as confirmed using spot assays fo

96 binofuran on this polyprenyl-P-P-linker unit-galactan intermediate catalyzed by unidentified arabinos

97 1,6-alpha-Galactan is a newly described polymer.

98 iae and M. tuberculosis In each species, the galactan is constructed from uridine 5'-diphosphate-alph

99 de C. glutamicum growth, suggesting that the galactan is critical in corynebacteria.

100 sfer of the first arabinofuranose residue to galactan is essential for M. smegmatis viability.

101 PAM galactan is one of a growing number of bacterial polysac

102 firmed by their thorough proteomic analyses, galactan is produced only in the reaction mixtures conta

103 imary walls of expanding cells, but beta-1,4-galactan is relatively abundant in secondary walls, espe

104 ll as the building block of the marine algal galactan lambda-carrageenan.

105 To explore the source of galactan length variation, a C. diphtheriae ortholog of

106 data suggest that GlfT2 alone can influence galactan length.

107 uch as high arabinan levels in beet and high galactan levels in carrot, appear to be major predictors

108 alactose (D-Gal) causes an increase in B-1,4-galactan levels in the wild type and GALS1 mutants, espe

109 ctose (D-Gal) causes an increase in beta-1,4-galactan levels in the wild type and GALS1 mutants, espe

110 used to detect xyloglucan (LM15), beta(1,4)-galactan (LM5), heteroxylan (LM10 and LM11), and galacto

111 Hyp-AGs, which share common features: (i) a galactan main chain composed of two 1-->3 beta-linked tr

112 e structurally related to the alpha-(1->6)-d-galactan main chain of Cryptococcus neoformans galactoxy

113 ct data in structure calculations revealed a galactan main chain with a reverse turn involving the be

114 he root surface occurrence of (1-->4)-beta-d-galactan marks the transition zone at or near the onset

115 tes that modulation of pectic (1-->4)-beta-d-galactan may be an event downstream of AGP function duri

116 d complex of mycolic acids, D-arabinan and D-galactan (mycolylarabinogalactan, mAG), which, in turn,

117 The accumulation of beta-1,4-galactan negatively affects salt tolerance.

118 The accumulation of B-1,4-galactan negatively affects salt tolerance.

119 The extent of surface (1-->4)-beta-d-galactan occurrence is reduced in response to genetic mu

120 re, mainly formed by carrageenans, sulphated-galactans of red seaweeds.

121 binan side chains of RG I as compared to the galactan ones under harsh alkaline conditions.

122 e capable of differential recognition of the galactan or mannan acceptors prior to appropriate arabin

123 ants of the antigen (in the case of the anti-galactans) or the chain terminus (in the case of the ant

124 Galactan polymer is a prominent component of the mycobac

125 Previous cell wall analysis data suggest the galactan polymer is longer in mycobacterial species than

126 odel for coupled synthesis and export of the galactan polymer precursor in mycobacteria.

127 d with fluorescent tags it was proposed that galactan polymerization takes place in a specific compar

128 drate polymerase responsible for the bulk of galactan polymerization, GlfT2, was produced, and its ca

129 de chains, and with 1,5-, 1,3,5-arabinan and galactan polysaccharides.

130 GlfT2 (Rv3808c) synthesizes the bulk of the galactan portion of the mycolyl-arabinogalactan complex,

131 s and the accumulation of an aberrantly long galactan precursor.

132 transporter involved in the translocation of galactan precursors across the plasma membrane.

133 n this work, we examined the activity of the galactan-producing cellular machine in the cell-wall con

134 cate that this enzyme mediates the cell wall galactan production through a sequence-specific polymeri

135 cell wall fractions containing beta(1-->4)-D-galactan purified from tomato fruit.

136 a new regulatory mechanism by which beta-1,4-galactan regulated by the BPC1/BPC2-GALS1 module aggrava

137 al a new regulatory mechanism by which B-1,4-galactan regulated by the BPC1/BPC2-GALS1 module aggrava

138 beta-1,6-galactosyl substitution of beta-1,4-galactan requiring more than three backbone residues for

139 ance, indicated that the cotyledons with the galactan-rich cell wall layer were twice as firm as thos

140 Yield of intact galactan-rich RG I of 21.6% and productivity of 192.0 g/

141 The structure of galactan-rich RG I was confirmed by H(1) NMR spectroscop

142 he microwave-assisted alkaline extraction of galactan-rich RG I was investigated.

143 ccharide extracts was the most enriched with galactan-rich RG I.

144 Potato pulp by-product rich in galactan-rich rhamnogalacturonan I (RG I) was investigat

145 Galactan-rich rhamnogalacturonan I (RG I), exhibiting pr

146 lp by-product was used for the extraction of galactan-rich rhamnogalacturonan I (RG-I) type pectic po

147 Sulphated-galactans seemed to be related to the antioxidant status

148 a substantial proportion of the beta-(1-->6)-galactan side chain oligosaccharides are substituted at

149 The beta-(1-->6)-galactan side chains are occasionally substituted with a

150 Hence, we propose that the elongated galactan side chains compete with xyloglucan and the pec

151 Labelling of galactan side chains of rhamnogalacturonan increased unt

152 The beta-(1-->6)-galactan side chains vary in length from one to over 20

153 ghly methylated pectins rich in arabinan and galactan side chains, and xyloglucan.

154 n that is heavily branched with arabinan and galactan side chains.

155 1-->3)-galactan backbone with beta-(1-->6)-d-galactan side chains.

156 ening, suggesting that the removal of pectic galactan side-chains is an important factor in the cell

157 This branched galactan structure has previously been identified in gar

158 hat the pamC alleles are the determinants of galactan structure.

159 amC1 and pamC2, which correlate with the two galactan structures in K. kingae.

160 near and (1 --> 6)-branched beta-(1 --> 3)-d-galactans, structures found in plant arabinogalactan pro

161 ell walls by up regulating the expression of GALACTAN SYNTHASE 1 (GALS1), which encodes a B-1,4-galac

162 ell walls by up regulating the expression of GALACTAN SYNTHASE 1 (GALS1), which encodes a beta-1,4-ga

163 SYNTHASE 1 (GALS1), which encodes a beta-1,4-galactan synthase.

164 alactofuranose (Galf) transferase and is the galactan synthase.

165 AN SYNTHASE 1 (GALS1), which encodes a B-1,4-galactan synthase.

166 the identity of the GT92 enzyme as beta-1,4-galactan synthase.

167 in Arabidopsis thaliana, which we designated GALACTAN SYNTHASE1, (GALS1), GALS2 and GALS3.

168 in vitro established that these proteins are galactan synthases capable of extending synthetic Galf d

169 P-P-GlcNAc-Rha) as the primary substrate for galactan synthesis and UDP-[(14)C]galactopyranose as the

170 galactosyl transferase (GalTr) implicated in galactan synthesis arose from its similarity to the know

171 Thus, Rv3782 appears to be the initiator of galactan synthesis, while Rv3808c continues with the sub

172 odes a GalTr involved in the first stages of galactan synthesis.

173 ated that the pamABCDE locus is required for galactan synthesis.

174 the first time, specific binding of a pectin galactan to the recombinant form of human Gal3.

175 Due to the galactan topology, this may result in comparatively weak

176 Galactan treatment resulted in reduction in the ROS gene

177 prenyl-P-P carrier followed by growth of the galactan unit.

178 romatography indicated that the (1-->4)-beta-galactan was associated with acidic pectic components.

179 (1-->4)-beta-galactan was restricted to a distinct thin layer at the

180 Pectic 1,4-beta-d-galactan was the main cell wall polysaccharide affected

181 the pathway leading to the fully polymerized galactan, was observed, suggesting that Rv3782 encodes a

182 alactose, galactooligosaccharides (GOSs) and galactan were produced through the Maillard reaction and

183 tin/arabinan, apple/citrus pectin and potato galactan, were evaluated as substrates in the conjugatio

184 ed with a galactofuranose homopolymer called galactan, which is a key virulence determinant that cont

185 uice from onion bulbs contained a mixture of galactan with short-length sugar chains, pectic polysacc

186 novel linear polysaccharide, designated PAM galactan, with the structure -->3)-beta-d-Galf-(1-->6)-b