ライフサイエンスコーパス: PGRP

1 PGRP inhibited phagocytosis of Gram-positive bacteria by

2 PGRP mRNA and protein were expressed in neutrophils and

3 PGRP-induced killing depended on the production of hydro

4 PGRP-L has no direct bacteriolytic activity.

5 PGRP-L is expressed in liver, PGRP-Ialpha and PGRP-Ibeta

6 PGRP-L, PGRP-Ialpha, and PGRP-Ibeta have 576, 341, and 3

7 PGRP-LC, PGRP-LE, and Imd each contain a motif with some

8 PGRP-LE, a cytosolic innate immune sensor in Drosophila,

9 PGRP-S is located with other antimicrobial proteins, suc

10 PGRP-S-/- mice have normal inflammatory responses and pr

11 PGRP-SA binding depended on the polymerization status of

12 PGRP-SC1a mutants also fail to activate the Toll/NF-kapp

13 PGRPs also bind the outer membrane of Escherichia coli a

14 PGRPs bind peptidoglycan, a ubiquitous component of bact

15 PGRPs induce oxidative stress in bacteria through a bloc

16 e report that a PGRP gene, BtPGRP, encodes a PGRP from the whitefly Bemisia tabaci (MEAM1) that binds

17 against infections in fish embryos and for a PGRP protein for survival in vertebrates.

18 symbiont-bearing organ, the bacteriome, in a PGRP-LC-independent manner.

19 of PGRP-S based on the known structure of a PGRP-Ialpha-PGN complex, we identified potential PGN-bin

20 signaling and the first known function of a PGRP-type receptor in the nervous system of any organism

21 Here, we report that a PGRP gene, BtPGRP, encodes a PGRP from the whitefly Bemi

22 (3) and bd-II) also had completely abolished PGRP-induced H(2)O(2) production and high resistance to

23 tants lacking functional FDH-O had abolished PGRP-induced H(2)O(2) production and the highest resista

24 f key PGN-contacting residues shows that all PGRPs employ this basic PGN-binding mode.

25 dues and interactions suggest that, although PGRPs may engage PGNs in a similar mode, structural diff

26 nd for an N-acetylmuramoyl-l-alanine amidase PGRP that cleaves peptidoglycan at the lactylamide bond

27 Consistent with sequence analysis, PGRP-SA does not contain the canonical zinc-binding resi

28 conformational differences between free and PGRP-bound PGN with respect to the relative orientation

29 t the physical interaction between GNBP1 and PGRP-SA using recombinant proteins.

30 GRP-L is expressed in liver, PGRP-Ialpha and PGRP-Ibeta in esophagus (and to a lesser extent in tonsi

31 ptidoglycan derivatives with PGRP-Ialpha and PGRP-S have been studied in real-time using surface plas

32 PGRP-L, PGRP-Ialpha, and PGRP-Ibeta have 576, 341, and 373 amino acids coded by f

33 novel human PGRPs (PGRP-L, PGRP-Ialpha, and PGRP-Ibeta) that together with the previously cloned PGR

34 an PGRP family, PGRP-Ialpha, PGRP-Ibeta, and PGRP-S, do not have the amidase activity.

35 issue-specific roles of PGRP-LC isoforms and PGRP-LE in the antibacterial response.

36 ther PGRPs, including Drosophila PGRP-LB and PGRP-SA and human PGRP-Ialpha.

37 Our results reveal that both PGRP-LC and PGRP-LE contribute to the intestinal immune response, wi

38 Instead, PGRP-LC and PGRP-LE signaled through a receptor-interacting protein

39 is recognized by two receptors, PGRP-LC and PGRP-LE, and activates a homolog of transcription factor

40 eptidoglycan binds the receptors PGRP-LC and PGRP-LE, which through interaction with the adaptor prot

41 complex with the ectodomains of PGRP-LCa and PGRP-LCx shows that TCT is bound to and presented by the

42 synergistic with lysozyme, and lysozyme and PGRP-S colocalize in neutrophil extracellular traps (NET

43 an recognition proteins (PGRPs) PGRP-SB2 and PGRP-SC2 were selected for further study based on differ

44 n occurring between two genes, PGRP-SC1A and PGRP-SC1B.

45 iers of the Abeta phenotype, namely Sod3 and PGRP-SC1b.

46 a lesser extent in tonsils and thymus), and PGRP-S in bone marrow (and to a lesser extent in neutrop

47 Constitutive activation of Toll and PGRP-LC/IMD could mimic the synergistic stimulation.

48 absence bacterial virulence is impaired, as PGRPs can directly recognize leftover peptidoglycan exte

49 Bactericidal PGRP induced a rapid decrease in respiration, which sugg

50 ion of monomeric peptidoglycan involves both PGRP-LCa and -LCx.

51 Our results reveal that both PGRP-LC and PGRP-LE contribute to the intestinal immune

52 When both PGRP-LB and IMD immunity pathway functions are blocked,

53 Whereas both PGRP-S and lysozyme recognize PGN, the exact binding spe

54 recognition proteins (PGRPs), membrane-bound PGRP-LC and secreted/cytosolic PGRP-LE, which relay diam

55 Bovine PGRP-S can mediate direct lysis of heat-killed bacteria;

56 ng, and antimicrobial activities of a bovine PGRP ortholog termed bovine oligosaccharide-binding prot

57 mice, we demonstrate little contribution by PGRP-L to systemic challenge using gram-negative bacteri

58 The minimum PGN fragment hydrolyzed by PGRP-L is MurNAc-tripeptide.

59 Thus, only bacterial recognition by PGRP-S, but not its effector function, is conserved from

60 idoglycan fragment that can be recognized by PGRP-Ialpha.

61 ow a combination of extracellular sensing by PGRP-LC isoforms and intracellular sensing through PGRP-

62 esents a processed form of PG for sensing by PGRP-SA and that a tripartite interaction between these

63 to be essential for specific recognition by PGRPs.

64 d that PGN, GlcNAc, and MurNAc bind to camel PGRP-S (CPGRP-S) with affinities corresponding to dissoc

65 l homology between recognition and catalytic PGRPs.

66 cal zinc-binding residues found in catalytic PGRPs.

67 lifespan of metazoans and identify SC-class PGRPs as longevity-promoting factors.

68 ta) that together with the previously cloned PGRP-S, define a new family of human pattern recognition

69 nism for PGN hydrolysis by Zn(2+)-containing PGRPs.

70 By contrast, PGRP-induced thiol stress (depletion of thiols) and meta

71 the "active" configuration does not convert PGRP-S into an active amidase.

72 Using gene targeting to create PGRP-L-deficient mice, we demonstrate little contributio

73 sponse, with a predominant role of cytosolic PGRP-LE in the midgut, the central section of endodermal

74 embrane-bound PGRP-LC and secreted/cytosolic PGRP-LE, which relay diaminopimelic acid (DAP)-type pept

75 an recognition protein LC/immune deficiency (PGRP-LC/IMD) signaling pathways.

76 tertiary granules and that PGRP-S-deficient (PGRP-S-/-) mice have increased susceptibility to intrape

77 infection in vivo, and an ectodomain-deleted PGRP-LC lacking the PGRP domain is an active receptor.

78 formation of heterodimers between different PGRP-LC isoforms, thereby potentially expanding the dive

79 d polymeric peptidoglycan required different PGRP-LC splice isoforms, while lipid A recognition requi

80 In Drosophila, distinct PGRPs bind to peptidoglycans on gram-positive or gram-ne

81 Downregulating PGRP-SB2 selectively in the fat body protected animals f

82 cts of overnutrition, whereas downregulating PGRP-SC2 produced InR-like phenotypes.

83 Drosophila PGRP-SA is a member of this family of pattern recognitio

84 Comparison with the catalytic Drosophila PGRP-LB reveals an overall structure conservation with a

85 to that of other PGRPs, including Drosophila PGRP-LB and PGRP-SA and human PGRP-Ialpha.

86 like the mammalian CD14 molecule, to enhance PGRP-LC-mediated peptidoglycan recognition on the cell s

87 o PGRP-induced killing, and formate enhanced PGRP-induced killing and H(2)O(2) production in an FDH-d

88 ermore, totem mutants, which fail to express PGRP-LC, are susceptible to Gram-negative (E. coli), but

89 oglycan pattern recognition receptor family (PGRP-LC), is required for the induction and sustained ex

90 The other members of the human PGRP family, PGRP-Ialpha, PGRP-Ibeta, and PGRP-S, do not have the ami

91 t to its critical role in immunity in flies, PGRP-L is largely dispensable for mammalian immunity aga

92 DH) genes had the highest survival following PGRP treatment.

93 elic acid as the specificity determinant for PGRP interaction.

94 e imd signaling protein was not required for PGRP-LC signaling.

95 d peptidoglycan on the bacterial surface for PGRP-SC1a mediated phagocytosis.

96 Four PGRPs, PGRP-L, -S, -Ialpha, and -Ibeta, are expressed fr

97 appear to be generated from ciliated Foxj1(+)PGRP-S(+) cells, indicative of a possible precommitted p

98 Peritoneal macrophages from PGRP-L-deficient mice produced decreased amounts of the

99 Neutrophils from PGRP-S-/- mice have normal phagocytic uptake of bacteria

100 ven peptidoglycan recognition protein genes (PGRPs) from 12 lines of Drosophila melanogaster and one

101 gene conversion occurring between two genes, PGRP-SC1A and PGRP-SC1B.

102 Where and how PGRPs act in vivo is not yet clear.

103 rect lysis of heat-killed bacteria; however, PGRP-S-mediated killing of bacteria is independent of th

104 ing Drosophila PGRP-LB and PGRP-SA and human PGRP-Ialpha.

105 In conclusion, human PGRP-L is an N-acetylmuramoyl-l-alanine amidase and this

106 f the C-terminal PGN-binding domain of human PGRP-I beta in complex with NAG-NAM-L-Ala-gamma-D-Glu-L-

107 f the C-terminal PGN-binding domain of human PGRP-Ialpha in complex with a muramyl tripeptide represe

108 f the C-terminal PGN-binding domain of human PGRP-Ialpha in two oligomeric states, monomer and dimer,

109 is present in the PGN-binding site of human PGRP-Ialpha.

110 e, we present the crystal structure of human PGRP-S at 1.70A resolution.

111 PGN, the exact binding specificity of human PGRP-S, its functional activity, and its potential syner

112 We report that human PGRP-L is a Zn2+-dependent N-acetylmuramoyl-l-alanine am

113 Here we show that human PGRP-S binds to and inhibits the growth of Staphylococcu

114 together, these results indicate that human PGRP-S plays a role in innate immunity in the context of

115 The other members of the human PGRP family, PGRP-Ialpha, PGRP-Ibeta, and PGRP-S, do not

116 All four human PGRPs bind peptidoglycan and Gram-positive bacteria.

117 We report cloning of three novel human PGRPs (PGRP-L, PGRP-Ialpha, and PGRP-Ibeta) that togethe

118 hts into the bactericidal mechanism of human PGRPs.

119 mbers of the human PGRP family, PGRP-Ialpha, PGRP-Ibeta, and PGRP-S, do not have the amidase activity

120 These porcine isoforms share identical PGRP domains at their C terminus, which are highly conse

121 The Zn2+ binding amino acids (conserved in PGRP-L and T7 amidase) and Cys-419 (not conserved in T7

122 proteins, is less hydrophobic and deeper in PGRP-S than in PGRP-IalphaC, whose PGRP-specific segment

123 ion of the catalytic water molecule found in PGRP-LB, tantalizingly suggests some hydrolytic function

124 identified potential PGN-binding residues in PGRP-S.

125 se results reveal several essential steps in PGRP-induced bacterial killing.

126 ess hydrophobic and deeper in PGRP-S than in PGRP-IalphaC, whose PGRP-specific segments vary consider

127 All mammalian and insect PGRPs have at least three highly conserved C-terminal PG

128 In insects PGRPs activate antimicrobial pathways in the hemolymph a

129 In insects, PGRP recognizes bacterial cell wall peptidoglycan (PGN)

130 Instead, PGRP-LC and PGRP-LE signaled through a receptor-interact

131 an-docking groove present in all other known PGRP structures.

132 PGRP-L, PGRP-Ialpha, and PGRP-Ibeta have 576, 341, and 373 amino

133 cloning of three novel human PGRPs (PGRP-L, PGRP-Ialpha, and PGRP-Ibeta) that together with the prev

134 ophila peptidoglycan recognition protein LC (PGRP-LC), a transmembrane protein required for the respo

135 eptor, Peptidoglycan recognition protein LC (PGRP-LC), is involved in phagocytosis of Gram-negative b

136 PGRP-LC, PGRP-LE, and Imd each contain a motif with some resembla

137 The peptidoglycan-recognition protein LCa (PGRP-LCa) is a transmembrane receptor required for activ

138 We also show that full-length PGRP-Ialpha comprises two tandem PGN-binding domains.

139 Here we show that full-length PGRP-LE acted as an intracellular receptor for monomeric

140 PGRP-L is expressed in liver, PGRP-Ialpha and PGRP-Ibeta in esophagus (and to a lesser

141 Therefore, mammalian PGRP binds to PGN and Gram-positive bacteria with nanomo

142 Therefore, mammalian PGRP-S functions in intracellular killing of bacteria.

143 Mammalian PGRPs do not have a single antimicrobial activity agains

144 ely little is known about the four mammalian PGRPs.

145 Larvae that receive less maternal PGRP-LB give rise to adults with fewer Wigglesworthia an

146 ect evidence that the longest family member, PGRP-L, is a secreted serum protein with the capacity to

147 Using Immunogold electron microscopy, PGRP-S was localized to the dense/large granules of naiv

148 ggesting a possible mechanism for modulating PGRP activity through the formation of multivalent adduc

149 Mouse PGRP bound to PGN with fast kinetics and nanomolar affin

150 We show that mouse PGRP-S is present in neutrophil tertiary granules and th

151 ype or a noncatalytic cysteine-serine mutant PGRP-SC1a, we find that PGRP-SC1a amidase activity is no

152 ents may mediate the antimicrobial action of PGRP family members.

153 d and sufficient for the amidase activity of PGRP-L, although its activity (in the N-terminal delta1-

154 se) are required for the amidase activity of PGRP-L, whereas three other amino acids, needed for the

155 midase, are not required for the activity of PGRP-L.

156 affinity and thus antimicrobial activity of PGRP-S is determined by the third amino acid in the PGN

157 The deficient binding of PGRP-LCa to monomeric peptidoglycan was confirmed by bio

158 In the case of PGRP-LC, differential splicing of PGRP domain-encoding e

159 g a PGN ligand into the PGN-binding cleft of PGRP-S based on the known structure of a PGRP-Ialpha-PGN

160 We also highlight the contribution of PGRP-LCa/x heterodimers to the systemic immune response

161 required for the proper hormonal control of PGRP-LC expression.

162 demonstrate sodium-dependent dimerization of PGRP-Ialpha in solution, suggesting a possible mechanism

163 Dimerization of PGRP-Ialpha, which occurs through three-dimensional doma

164 peptidoglycan to the extracellular domain of PGRP-LC activates intracellular signaling because its cy

165 d the crystal structure of the ectodomain of PGRP-LCa at 2.5-A resolution and found two unique helica

166 bound to and presented by the ectodomain of PGRP-LCx.

167 on of TCT in complex with the ectodomains of PGRP-LCa and PGRP-LCx shows that TCT is bound to and pre

168 Furthermore, the antimicrobial effect of PGRP-S against E coli is synergistic with lysozyme, and

169 f this study was to identify the function of PGRP in mammals.

170 monitored through the receptor integrity of PGRP-LC after host and pathogen are engaged via pattern

171 te fly lines expressing specific isoforms of PGRP-LC and assessed the tissue-specific roles of PGRP-L

172 es, pointing to constraints in the number of PGRP-SA molecules bound for signaling initiation.

173 Infection-induced proteolysis of PGRP-LC controls the IMD activation and melanization cas

174 Reduction of PGRP-LB experimentally diminishes female fecundity and d

175 The C-terminal region of PGRP-L, homologous to bacteriophage and bacterial amidas

176 irreversible cleavage or down-regulation of PGRP-LC may provide an additional cue for the host to di

177 component system was a negative regulator of PGRP-induced oxidative stress.

178 in vivo studies demonstrate the key role of PGRP-LCx in sensing DAP-type peptidoglycan-containing Gr

179 LC and assessed the tissue-specific roles of PGRP-LC isoforms and PGRP-LE in the antibacterial respon

180 In this study we identify the site of PGRP-induced generation of H(2)O(2) in Escherichia coli.

181 o O(2), these results imply that the site of PGRP-induced incomplete reduction of O(2) to H(2)O(2) is

182 he case of PGRP-LC, differential splicing of PGRP domain-encoding exons to a common intracellular dom

183 recently reported x-ray crystal structure of PGRP-Ialpha with the lysine-containing muramyltripeptide

184 The overall structure of PGRP-S, which participates in intracellular killing of G

185 We report here the crystal structure of PGRP-SA at 1.56 A resolution, which represents the first

186 e rPGRP-LC, an alternative splice variant of PGRP-LC that selectively dampens immune response activat

187 onomeric peptidoglycan, whereas a version of PGRP-LE containing only the PGRP domain functioned extra

188 We asked what the functions of PGRPs in fish are and whether they are indispensable for

189 ter understand the bactericidal mechanism of PGRPs, we determined the crystal structure of the C-term

190 To pinpoint the site of PGRPs that mediates discrimination, we engineered struct

191 re, we describe recent structural studies of PGRPs that reveal the basis for PGN recognition and prov

192 In mammals one PGRP is an antibacterial neutrophil protein.

193 tidoglycan-docking groove conserved in other PGRPs.

194 sitive bacteria, is similar to that of other PGRPs, including Drosophila PGRP-LB and PGRP-SA and huma

195 e report cloning of three novel human PGRPs (PGRP-L, PGRP-Ialpha, and PGRP-Ibeta) that together with

196 e peptidoglycan recognition proteins (PGRPs) PGRP-SB2 and PGRP-SC2 were selected for further study ba

197 Four PGRPs, PGRP-L, -S, -Ialpha, and -Ibeta, are expressed from thre

198 acterization of two long isoforms of porcine PGRP.

199 ctively, these findings suggest that porcine PGRPs are involved in antimicrobial peptide expression.

200 f the Drosophila pattern recognition protein PGRP-LCx induces DIAP2-dependent polyubiquitylation of t

201 o known as peptidoglycan recognition protein PGRP-S, PGLYRP1), an innate immunity protein, interacts

202 t affects peptidoglycan recognition protein (PGRP) SC1a and impairs the ability to phagocytose the ba

203 a-la) and peptidoglycan recognition protein (PGRP) were not detected while camel serum albumin (CSA)

204 estigated peptidoglycan recognition protein (PGRP)-encoding genes in the cereal weevil Sitophilus zea

205 action of peptidoglycan recognition protein (PGRP)-Ialpha with the lysine-containing muramyl pentapep

206 a tsetse peptidoglycan recognition protein (PGRP-LB) is crucial for symbiotic tolerance and trypanos

207 the host Peptidoglycan Recognition Protein (PGRP-LB) is expressed only in adults and is a major comp

208 -spanning peptidoglycan recognition protein, PGRP-LC, functions as the receptor for the IMD pathway.

209 ow that a peptidoglycan recognition protein, PGRP-LC, is absolutely required for the induction of ant

210 Peptidoglycan recognition proteins (PGRPs or PGLYRPs) are pattern recognition molecules that

211 ave four peptidoglycan recognition proteins (PGRPs or PGLYRPs), which are secreted innate immunity pa

212 Peptidoglycan recognition proteins (PGRPs) are a group of newly identified proteins with eme

213 The peptidoglycan recognition proteins (PGRPs) are a large group of proteins found in insects an

214 Peptidoglycan recognition proteins (PGRPs) are highly conserved pattern-recognition molecule

215 Peptidoglycan recognition proteins (PGRPs) are multifunctional pattern recognition proteins.

216 Peptidoglycan recognition proteins (PGRPs) are pattern recognition molecules coded by up to

217 Peptidoglycan (PGN) recognition proteins (PGRPs) are pattern recognition molecules of innate immun

218 Peptidoglycan recognition proteins (PGRPs) are pattern recognition receptors of the innate i

219 Peptidoglycan recognition proteins (PGRPs) are pattern recognition receptors of the innate i

220 Peptidoglycan (PGN) recognition proteins (PGRPs) are pattern-recognition receptors of the innate i

221 Peptidoglycan recognition proteins (PGRPs) are structurally conserved through evolution, but

222 Peptidoglycan recognition proteins (PGRPs) constitute a family of innate immune recognition

223 Peptidoglycan recognition proteins (PGRPs) constitute a recently characterized family of pat

224 Peptidoglycan recognition proteins (PGRPs) form a recently discovered protein family, which

225 ammalian Peptidoglycan Recognition Proteins (PGRPs) kill bacteria through induction of synergistic ox

226 ammalian Peptidoglycan Recognition Proteins (PGRPs) kill both Gram-positive and Gram-negative bacteri

227 ors, the peptidoglycan recognition proteins (PGRPs) LCa and LCx, which activates the immune deficienc

228 ition by peptidoglycan recognition proteins (PGRPs) of the host.

229 The peptidoglycan recognition proteins (PGRPs) PGRP-SB2 and PGRP-SC2 were selected for further s

230 ly of 12 peptidoglycan recognition proteins (PGRPs) that recognize peptidoglycan, a ubiquitous compon

231 via two peptidoglycan recognition proteins (PGRPs), membrane-bound PGRP-LC and secreted/cytosolic PG

232 ammalian peptidoglycan recognition proteins (PGRPs), similar to antimicrobial lectins, bind the bacte

233 ins, and peptidoglycan recognition proteins (PGRPs).

234 d insect peptidoglycan recognition proteins (PGRPs).

235 osophila peptidoglycan recognition proteins (PGRPs).

236 eria using the single peptidoglycan receptor PGRP-LC is unknown.

237 pression of the pattern recognition receptor PGRP-LC in Drosophila, thereby tightly regulating innate

238 In this article, we show that the receptor PGRP-LC is down-regulated in response to Salmonella/Esch

239 We show that the receptor PGRP-LC regulates and integrates two host defense system

240 gram-negative peptidoglycan and the receptor PGRP-LC.

241 rolytic function for this member of receptor PGRPs.

242 acid-type peptidoglycan binds the receptors PGRP-LC and PGRP-LE, which through interaction with the

243 ve bacteria, is recognized by two receptors, PGRP-LC and PGRP-LE, and activates a homolog of transcri

244 resents the first example of a "recognition" PGRP.

245 Restoring PGRP-SC2 expression in enterocytes of the intestinal epi

246 on of a peptidoglycan recognition protein-S (PGRP-S) transgene reporter.

247 Insect peptidoglycan recognition protein-S (PGRP-S), a member of a family of innate immunity pattern

248 1) and peptidoglycan recognition protein SA (PGRP-SA).

249 on of peptidoglycan recognition protein SC2 (PGRP-SC2), a negative regulator of IMD/Relish innate imm

250 studies demonstrate that neutrophils secrete PGRP-S when exposed to bacteria.

251 In Bacillus subtilis, PGRPs activate the CssR-CssS two-component system that d

252 Surprisingly, PGRP-S derived significantly higher affinities for the D

253 e at least three highly conserved C-terminal PGRP domains located either in the extracellular or in t

254 ent in neutrophil tertiary granules and that PGRP-S-deficient (PGRP-S-/-) mice have increased suscept

255 Here, we demonstrate that PGRP-LC binds Imd and that its cytoplasmic domain is cri

256 Our results demonstrate that PGRP-LC is an essential component for recognition and si

257 steine-serine mutant PGRP-SC1a, we find that PGRP-SC1a amidase activity is not necessary for Toll sig

258 reports, Iatsenko et al. (2016) reveal that PGRP-SD regulates the Imd signaling pathway rather than

259 Here we show that PGRP-LC is important for antibacterial peptide synthesis

260 ges in these bacteria, our data suggest that PGRP-SC1a is necessary for recognition of the Lys-type p

261 s critical for its activity, suggesting that PGRP-LC acts as a signal-transducing receptor.

262 induction of immune response, suggests that PGRP-LCa recognizes the exposed structural features of a

263 The structure reveals that PGRPs exhibit extensive topological variability in a lar

264 We show that PGRPs enter the Gram-positive cell wall at the site of d

265 The PGRP-LC cytoplasmic domain can mediate formation of hete

266 The PGRP-LC cytoplasmic domain is also essential for the for

267 PGN-binding site and a groove formed by the PGRP-specific segment on the opposite face of the molecu

268 nd an ectodomain-deleted PGRP-LC lacking the PGRP domain is an active receptor.

269 The plasticity of the PGRP-binding site revealed by these mutants suggests an

270 hogenic conditions through activation of the PGRP-LC receptor of the immune deficiency pathway.

271 eas a version of PGRP-LE containing only the PGRP domain functioned extracellularly, like the mammali

272 ligand) and gram-negative peptidoglycan (the PGRP-LC ligand) together caused synergistic activation o

273 molecules challenges the assumption that the PGRP family of proteins recapitulates the evolution of T

274 Furthermore, we find that the PGRP-SC1a amidase activity can be substituted by exogeno

275 ric peptidoglycan (DAP-type PGN) through the PGRP ectodomain.

276 he developing zebrafish embryo, one of these PGRPs is essential for defense and survival during bacte

277 Thus, these PGRPs may play a role in recognition of bacteria in thes

278 However, comparison with these PGRPs reveals important differences in both the PGN-bind

279 activates the host systemic immunity through PGRP-LC.

280 C isoforms and intracellular sensing through PGRP-LE provides sophisticated mechanisms to detect and

281 Thus, PGRP-LB plays a pivotal role in tsetse's fitness by prot

282 Thus, PGRP-LC is a candidate receptor for retrograde, trans-sy

283 sulted in increased resistance of E. coli to PGRP killing.

284 (2) production and the highest resistance to PGRP-induced killing, and formate enhanced PGRP-induced

285 d H(2)O(2) production and high resistance to PGRP-induced killing.

286 In contrast to PGRPs with PGN-lytic amidase activity, no zinc ion is pr

287 In addition, tsetse PGRP-LB may have an anti-protozoal activity that confers

288 resence of conserved amidase domains, tsetse PGRP-LB may scavenge the peptidoglycan (PGN) released by

289 glycopeptide antibiotics (e.g., vancomycin), PGRPs kill bacteria by directly interacting with their c

290 Various PGRPs are reported to have diverse functions: they bind

291 e central section of endodermal origin where PGRP-LE is enriched.

292 sensing of tracheal cytotoxin (TCT), whereas PGRP-LCy may have a minor role in antagonizing the immun

293 However, metabolic pathways through which PGRPs induce these bactericidal stress responses are unk

294 lyze Gram-positive peptidoglycan (PG), while PGRP-SA bound highly purified PG fragments (muropeptides

295 deeper in PGRP-S than in PGRP-IalphaC, whose PGRP-specific segments vary considerably in amino acid s

296 The amidase activity associated with PGRP-LB may scavenge the symbiotic peptidoglycan and pre

297 of synthetic peptidoglycan derivatives with PGRP-Ialpha and PGRP-S have been studied in real-time us

298 However, only the interaction of PGN with PGRPs, which are highly conserved from insects to mammal

299 Zebrafish PGRPs have both peptidoglycan-lytic amidase activity and

300 We identified and cloned three zebrafish PGRPs and showed that they are highly expressed in eggs,