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Volumn 19, Issue 1, 2000, Pages 57-66

Translocation of group 1 capsular polysaccharide to the surface of Escherichia coli requires a multimeric complex in the outer membrane

Author keywords

Capsular polysaccharides; Outer membrane; Secretin; Translocation; Wza

Indexed keywords

LIPOPROTEIN; OUTER MEMBRANE PROTEIN; POLYSACCHARIDE; SECRETIN;

EID: 0034602835     PISSN: 02614189     EISSN: None     Source Type: Journal    
DOI: 10.1093/emboj/19.1.57     Document Type: Article
Times cited : (132)

References (49)
  • 2
    • 0026318173 scopus 로고
    • Zones of membrane adhesion in the cryofixed envelope of Escherichia coli
    • Bayer, M.E. (1991) Zones of membrane adhesion in the cryofixed envelope of Escherichia coli. J. Struct. Biol., 107, 268-280.
    • (1991) J. Struct. Biol. , vol.107 , pp. 268-280
    • Bayer, M.E.1
  • 3
    • 0017723075 scopus 로고
    • Polysaccharide capsule of Escherichia coli: Microscope study of its size, structure and sites of synthesis
    • Bayer, M.E. and Thurow, H. (1977) Polysaccharide capsule of Escherichia coli: microscope study of its size, structure and sites of synthesis. J. Bacteriol., 130, 911-936.
    • (1977) J. Bacteriol. , vol.130 , pp. 911-936
    • Bayer, M.E.1    Thurow, H.2
  • 4
    • 0029899915 scopus 로고    scopus 로고
    • Genetic organization and functional analysis of the otn DNA essential for cell-wall polysaccharide synthesis in Vibrio cholerae O139
    • Bik, E.M., Bunschoten, A.E., Willems, R.J.L., Chang, A.C.Y. and Mooi, F.R. (1996) Genetic organization and functional analysis of the otn DNA essential for cell-wall polysaccharide synthesis in Vibrio cholerae O139. Mol. Microbiol., 20, 799-811.
    • (1996) Mol. Microbiol. , vol.20 , pp. 799-811
    • Bik, E.M.1    Bunschoten, A.E.2    Willems, R.J.L.3    Chang, A.C.Y.4    Mooi, F.R.5
  • 6
    • 0031983616 scopus 로고    scopus 로고
    • Formation of oligomeric rings by XcpQ and PilQ, which are involved in protein transport across the outer membrane of Pseudomonas aeruginosa
    • Bitter, W., Koster, M., Latijnhouwers, M., De Cock, H. and Tommassen, J. (1998) Formation of oligomeric rings by XcpQ and PilQ, which are involved in protein transport across the outer membrane of Pseudomonas aeruginosa. Mol. Microbiol., 27, 209-219.
    • (1998) Mol. Microbiol. , vol.27 , pp. 209-219
    • Bitter, W.1    Koster, M.2    Latijnhouwers, M.3    De Cock, H.4    Tommassen, J.5
  • 7
    • 0029766843 scopus 로고    scopus 로고
    • Coating the surface: A model for expression of capsular polysialic acid in Escherichia coli K1
    • Bliss, J.M. and Silver, R.P. (1996) Coating the surface: a model for expression of capsular polysialic acid in Escherichia coli K1. Mol. Microbiol., 21, 221-231.
    • (1996) Mol. Microbiol. , vol.21 , pp. 221-231
    • Bliss, J.M.1    Silver, R.P.2
  • 8
    • 0028956689 scopus 로고
    • Molecular analysis of the ams operon required for exopolysaccharide synthesis of Erwinia amylovora
    • Bugert, P. and Geider, K. (1995) Molecular analysis of the ams operon required for exopolysaccharide synthesis of Erwinia amylovora. Mol. Microbiol., 15, 917-933.
    • (1995) Mol. Microbiol. , vol.15 , pp. 917-933
    • Bugert, P.1    Geider, K.2
  • 9
    • 0031665154 scopus 로고    scopus 로고
    • Salmonella InvG forms a ring-like multimer that requires the InvH lipoprotien for outer membrane localization
    • Crago, A.M. and Koronakis, V. (1998) Salmonella InvG forms a ring-like multimer that requires the InvH lipoprotien for outer membrane localization. Mol. Microbiol., 30, 47-56.
    • (1998) Mol. Microbiol. , vol.30 , pp. 47-56
    • Crago, A.M.1    Koronakis, V.2
  • 10
    • 0029996473 scopus 로고    scopus 로고
    • Distribution of the rol gene encoding the regulator of lipopolysaccharide O-chain length in Escherichia coli and its influence on the expression of group I capsular K antigens
    • Dodgson, C., Amor, P. and Whitfield, C. (1996) Distribution of the rol gene encoding the regulator of lipopolysaccharide O-chain length in Escherichia coli and its influence on the expression of group I capsular K antigens. J. Bacteriol., 178, 1895-1902.
    • (1996) J. Bacteriol. , vol.178 , pp. 1895-1902
    • Dodgson, C.1    Amor, P.2    Whitfield, C.3
  • 11
    • 0033017192 scopus 로고    scopus 로고
    • Gene products required for surface expression of the capsular form of the group 1 K antigen in Escherichia coli (O9a:K30)
    • Drummelsmith, J. and Whitfield, C. (1999) Gene products required for surface expression of the capsular form of the group 1 K antigen in Escherichia coli (O9a:K30). Mol. Microbiol., 31, 1321-1332.
    • (1999) Mol. Microbiol. , vol.31 , pp. 1321-1332
    • Drummelsmith, J.1    Whitfield, C.2
  • 12
    • 0030953719 scopus 로고    scopus 로고
    • Polymorphism, duplication and IS1-mediated rearrangement in the chromosomal his-rfb region of Escherichia coli strains with group IA capsular K antigens
    • Drummelsmith, J., Amor, P.A. and Whitfield, C. (1997) Polymorphism, duplication and IS1-mediated rearrangement in the chromosomal his-rfb region of Escherichia coli strains with group IA capsular K antigens. J. Bacteriol., 179, 3232-3238.
    • (1997) J. Bacteriol. , vol.179 , pp. 3232-3238
    • Drummelsmith, J.1    Amor, P.A.2    Whitfield, C.3
  • 13
    • 0023272340 scopus 로고
    • Interposon mulagenesis of soil and water bacteria: A family of DNA fragments designed for in vitro insertional mutagenesis of Gram-negative bacteria
    • Fellay, R., Frey, J. and Krisch, H. (1987) Interposon mulagenesis of soil and water bacteria: a family of DNA fragments designed for in vitro insertional mutagenesis of Gram-negative bacteria. Gene, 52, 147-154.
    • (1987) Gene , vol.52 , pp. 147-154
    • Fellay, R.1    Frey, J.2    Krisch, H.3
  • 14
    • 0015854977 scopus 로고
    • Solubilization of the cytoplasmic membrane of Escherichia coli by the anionic detergent sodium-lauryl sarcosinate
    • Filip, C., Fletcher, G., Wulff, J.L. and Earhart, C.F. (1973) Solubilization of the cytoplasmic membrane of Escherichia coli by the anionic detergent sodium-lauryl sarcosinate. J. Bacteriol., 115, 717-722.
    • (1973) J. Bacteriol. , vol.115 , pp. 717-722
    • Filip, C.1    Fletcher, G.2    Wulff, J.L.3    Earhart, C.F.4
  • 15
    • 0026529982 scopus 로고
    • Conserved outer membrane protein of Neisseria meningitidis involved in capsule expression
    • Frosch, M., Müller, D., Bousset, K. and Müller, A. (1992) Conserved outer membrane protein of Neisseria meningitidis involved in capsule expression. Infect. Immun., 60, 798-803.
    • (1992) Infect. Immun. , vol.60 , pp. 798-803
    • Frosch, M.1    Müller, D.2    Bousset, K.3    Müller, A.4
  • 16
    • 0032079985 scopus 로고    scopus 로고
    • Functional characterization of the low-molecular-mass phosphotyrosine-protein phosphatase of Acinetobacter johnsonii
    • Grangeasse, C., Doublet, P., Vincent, C., Vaganay, E., Riberty, M., Duclos, B. and Cozzone, A.J. (1998) Functional characterization of the low-molecular-mass phosphotyrosine-protein phosphatase of Acinetobacter johnsonii. J. Mol. biol., 278, 339-347.
    • (1998) J. Mol. Biol. , vol.278 , pp. 339-347
    • Grangeasse, C.1    Doublet, P.2    Vincent, C.3    Vaganay, E.4    Riberty, M.5    Duclos, B.6    Cozzone, A.J.7
  • 18
    • 0024340114 scopus 로고
    • New method of generating deletions and gene replacements is Escherichia coli
    • Hamilton, C.A., Aldea, M., Washburn, B.K., Babtizke, P. and Kushner, S.R. (1989) New method of generating deletions and gene replacements is Escherichia coli. J. Bacteriol., 171, 4617-4622.
    • (1989) J. Bacteriol. , vol.171 , pp. 4617-4622
    • Hamilton, C.A.1    Aldea, M.2    Washburn, B.K.3    Babtizke, P.4    Kushner, S.R.5
  • 19
    • 0029870545 scopus 로고    scopus 로고
    • Insertion of an outer membrane protein in Escherichia coli requires a chaperone-like protein
    • Hardie, K.R., Lory, S. and Pugsley, A.P. (1996) Insertion of an outer membrane protein in Escherichia coli requires a chaperone-like protein. EMBO J., 15, 978-988.
    • (1996) EMBO J. , vol.15 , pp. 978-988
    • Hardie, K.R.1    Lory, S.2    Pugsley, A.P.3
  • 20
    • 0027293732 scopus 로고
    • Complete nucleotide sequence and molecular characterization of ViaB region encoding Vi antigen in Salmonella typhi
    • Hashimoto, Y., Li, N., Yokoyama, H. and Ezaki, T. (1993) Complete nucleotide sequence and molecular characterization of ViaB region encoding Vi antigen in Salmonella typhi. J. Bacteriol., 175,4456-4465.
    • (1993) J. Bacteriol. , vol.175 , pp. 4456-4465
    • Hashimoto, Y.1    Li, N.2    Yokoyama, H.3    Ezaki, T.4
  • 21
    • 0020536197 scopus 로고
    • Morphological heterogeneity among Salmonella lipopolysaccharide chemotypes in silver-stained polyacrylamide gels
    • Hitchcock, P.J. and Brown, T.M. (1983) Morphological heterogeneity among Salmonella lipopolysaccharide chemotypes in silver-stained polyacrylamide gels. J. Bacteriol., 154, 269-277.
    • (1983) J. Bacteriol. , vol.154 , pp. 269-277
    • Hitchcock, P.J.1    Brown, T.M.2
  • 22
    • 0029135229 scopus 로고
    • Molecular characterization of the eps gene cluster of Pseudomonas solanacearum and its transcriptional regulation at a single promoter
    • Huang, J. and Schell, M. (1995) Molecular characterization of the eps gene cluster of Pseudomonas solanacearum and its transcriptional regulation at a single promoter. Mol. Microbiol., 16, 977-989.
    • (1995) Mol. Microbiol. , vol.16 , pp. 977-989
    • Huang, J.1    Schell, M.2
  • 23
    • 0020322927 scopus 로고
    • Mechanism of signal peptide cleavage in the biosynthesis of the major lipoprotien of the Escherichia coli outer membrane
    • Hussain, M., Ichihara, S. and Mizushima, S. (1982) Mechanism of signal peptide cleavage in the biosynthesis of the major lipoprotien of the Escherichia coli outer membrane. J. Biol. Chem., 257, 5177-5182.
    • (1982) J. Biol. Chem. , vol.257 , pp. 5177-5182
    • Hussain, M.1    Ichihara, S.2    Mizushima, S.3
  • 24
    • 0033564208 scopus 로고    scopus 로고
    • Protein tyrosine kinases in bacterial pathogens are associated with virulence and production of exopolysaccharide
    • Ilan, O., Bloch, Y., Frankel, G., Ullrich, H., Geider, K. and Rosenshine, I. (1999) Protein tyrosine kinases in bacterial pathogens are associated with virulence and production of exopolysaccharide. EMBO J., 18, 3241-3248.
    • (1999) EMBO J. , vol.18 , pp. 3241-3248
    • Ilan, O.1    Bloch, Y.2    Frankel, G.3    Ullrich, H.4    Geider, K.5    Rosenshine, I.6
  • 25
    • 0002257543 scopus 로고    scopus 로고
    • Capsules of Escherichia coli
    • Sussman, M. ed., Cambridge University Press, Cambridge, UK
    • Jann, K. and Jann, B. (1997) Capsules of Escherichia coli. In Sussman, M. ed.), Escherichia coli: Mechanisms of Virulence. Cambridge University Press, Cambridge, UK, pp. 113-143.
    • (1997) Escherichia coli: Mechanisms of Virulence , pp. 113-143
    • Jann, K.1    Jann, B.2
  • 26
    • 0030716279 scopus 로고    scopus 로고
    • The outer membrane component, YscC, of the Yop secretion machinery of Yersinia enterocolitica forms a ring-shaped multimeric complex
    • Koster, M., Bitter, W., de Cock, H., Allaoui, A., Cornelis, G.R. and Tommassen, J. (1997) The outer membrane component, YscC, of the Yop secretion machinery of Yersinia enterocolitica forms a ring-shaped multimeric complex. Mol. Microbiol., 26, 789-797.
    • (1997) Mol. Microbiol. , vol.26 , pp. 789-797
    • Koster, M.1    Bitter, W.2    De Cock, H.3    Allaoui, A.4    Cornelis, G.R.5    Tommassen, J.6
  • 28
    • 0033612142 scopus 로고    scopus 로고
    • An aqueous channel for filamentous phage export
    • Marciano, D.K., Russel, M. and Simon, S.M. (1999) An aqueous channel for filamentous phage export. Science, 284, 1516-1519.
    • (1999) Science , vol.284 , pp. 1516-1519
    • Marciano, D.K.1    Russel, M.2    Simon, S.M.3
  • 29
    • 0024790216 scopus 로고
    • Use of a bacteriophage-encoded glycanase enzyme in the generation of lipopolysaccharide O side chain deficient mutants of Escherichia coli O9:K30 and Klebsiella O1:K20: Role of O and K antigens in resistance to complement-mediated serum killing
    • McCallum, K.L., Laakso, D.H. and Whitfield, C. (1989) Use of a bacteriophage-encoded glycanase enzyme in the generation of lipopolysaccharide O side chain deficient mutants of Escherichia coli O9:K30 and Klebsiella O1:K20: role of O and K antigens in resistance to complement-mediated serum killing. Can. J. Microbiol., 35, 994-999.
    • (1989) Can. J. Microbiol. , vol.35 , pp. 994-999
    • McCallum, K.L.1    Laakso, D.H.2    Whitfield, C.3
  • 30
    • 0003785155 scopus 로고
    • Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY
    • Miller, J.H. (1972) Experiments in Molecular Genetics. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY.
    • (1972) Experiments in Molecular Genetics
    • Miller, J.H.1
  • 32
    • 0018713255 scopus 로고
    • Protein K: A new major outer membrane protein found in encapsulated Escherichia coli
    • Paakanen, J., Gotschlich, E.C. and Mäkelä, P.H. (1979) Protein K: a new major outer membrane protein found in encapsulated Escherichia coli. J. Bacteriol., 139, 835-841.
    • (1979) J. Bacteriol. , vol.139 , pp. 835-841
    • Paakanen, J.1    Gotschlich, E.C.2    Mäkelä, P.H.3
  • 33
    • 0030843523 scopus 로고    scopus 로고
    • Computer-based analyses of the protein constituents of transport systems catalysing export of complex carbohydrates in bacteria
    • Paulsen, I.T., Beness, A.M. and Saier, M.H.,Jr (1997) Computer-based analyses of the protein constituents of transport systems catalysing export of complex carbohydrates in bacteria. Microbiology, 143, 2685-2699.
    • (1997) Microbiology , vol.143 , pp. 2685-2699
    • Paulsen, I.T.1    Beness, A.M.2    Saier M.H., Jr.3
  • 34
    • 0032963804 scopus 로고    scopus 로고
    • Conserved organization in the gene clusters for expression of Escherichia coli group 1 K antigens: Relationship to the colanic acid biosynthesis locus and the genes from Klebsiella pneumoniae
    • Rahn, A., Drummelsmith, J. and Whitfield, C. (1999) Conserved organization in the gene clusters for expression of Escherichia coli group 1 K antigens: relationship to the colanic acid biosynthesis locus and the genes from Klebsiella pneumoniae. J. Bacteriol., 181, 2307-2313.
    • (1999) J. Bacteriol. , vol.181 , pp. 2307-2313
    • Rahn, A.1    Drummelsmith, J.2    Whitfield, C.3
  • 35
    • 0031791463 scopus 로고    scopus 로고
    • The localization of KpsC, S and T and KfiA, C and D proteins involved in the biosynthesis of the Escherichia coli K5 capsular polysaccharide: Evidence for a membrane-bound complex
    • Rigg, G.P., Barret, B. and Roberts, I.S. (1998) The localization of KpsC, S and T and KfiA, C and D proteins involved in the biosynthesis of the Escherichia coli K5 capsular polysaccharide: evidence for a membrane-bound complex. Microbiology, 144, 2905-2914.
    • (1998) Microbiology , vol.144 , pp. 2905-2914
    • Rigg, G.P.1    Barret, B.2    Roberts, I.S.3
  • 36
    • 0030911423 scopus 로고    scopus 로고
    • Specific interaction between OutD, an Erwinia chrysanthemi outer membrane protein of the general secretory pathway and secreted proteins
    • Shevchik, V.E., Robert-Baudouy, J. and Condemine, G. (1997) Specific interaction between OutD, an Erwinia chrysanthemi outer membrane protein of the general secretory pathway and secreted proteins. EMBO J., 16, 3007-3016.
    • (1997) EMBO J. , vol.16 , pp. 3007-3016
    • Shevchik, V.E.1    Robert-Baudouy, J.2    Condemine, G.3
  • 37
    • 0023546657 scopus 로고
    • Translocation of capsular polysaccharides in pathogenic strains of Escherichia coli requires a 60-kilodalton periplasmic protein
    • Silver, R.P., Aaronson, W. and Vann, W.F. (1987) Translocation of capsular polysaccharides in pathogenic strains of Escherichia coli requires a 60-kilodalton periplasmic protein. J. Bacteriol., 169, 5489-5495.
    • (1987) J. Bacteriol. , vol.169 , pp. 5489-5495
    • Silver, R.P.1    Aaronson, W.2    Vann, W.F.3
  • 38
    • 0021042206 scopus 로고
    • Escherichia coli outer membrane protein K is a porin
    • Sutcliffe, J., Blumenthal, R., Walter, A. and Foulds, J. (1983) Escherichia coli outer membrane protein K is a porin. J. Bacteriol., 156, 867-872.
    • (1983) J. Bacteriol. , vol.156 , pp. 867-872
    • Sutcliffe, J.1    Blumenthal, R.2    Walter, A.3    Foulds, J.4
  • 39
    • 0024260290 scopus 로고
    • Bacterial surface polysaccharides: Structure and function
    • Sutherland, I.W. (1988) Bacterial surface polysaccharides: structure and function. Int. Rev. Cytol., 113, 187-231.
    • (1988) Int. Rev. Cytol. , vol.113 , pp. 187-231
    • Sutherland, I.W.1
  • 40
    • 0027968068 scopus 로고
    • CLUSTAL_W: Improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice
    • Thompson, J.D., Higgins, D.G. and Gibson, T.J. (1994) CLUSTAL_W: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice. Nucleic Acids Res., 22, 4673-4680.
    • (1994) Nucleic Acids Res. , vol.22 , pp. 4673-4680
    • Thompson, J.D.1    Higgins, D.G.2    Gibson, T.J.3
  • 41
    • 0009482260 scopus 로고
    • Electrophoretic transfer of proteins from acrylamide gels to nitrocellulose sheets: Procedure and some applications
    • Towbin, M.T., Staehelin, T. and Gordon, G. (1979) Electrophoretic transfer of proteins from acrylamide gels to nitrocellulose sheets: procedure and some applications. Proc. Natl Acad. Sci. USA, 76, 4350-4354.
    • (1979) Proc. Natl Acad. Sci. USA , vol.76 , pp. 4350-4354
    • Towbin, M.T.1    Staehelin, T.2    Gordon, G.3
  • 42
    • 0020055346 scopus 로고
    • A sensitive silver stain for detecting lipopolysaccharides in polyacrylamide gels
    • Tsai, G.M. and Frasch, C.E. (1982) A sensitive silver stain for detecting lipopolysaccharides in polyacrylamide gels. Anal. Biochem., 119, 115-119.
    • (1982) Anal. Biochem. , vol.119 , pp. 115-119
    • Tsai, G.M.1    Frasch, C.E.2
  • 43
    • 0033038516 scopus 로고    scopus 로고
    • Cells of Escherichia coli contain a protein-tyrosine kinase, Wza, and a phosphotyrosine-protein phosphatase, Wzb
    • Vincent, C., Doublet, P., Grangeasse, C., Vaganay, E., Cozzone, A.J. and Duclos, B. (1999) Cells of Escherichia coli contain a protein-tyrosine kinase, Wza, and a phosphotyrosine-protein phosphatase, Wzb. J. Bacteriol., 181, 3472-3477.
    • (1999) J. Bacteriol. , vol.181 , pp. 3472-3477
    • Vincent, C.1    Doublet, P.2    Grangeasse, C.3    Vaganay, E.4    Cozzone, A.J.5    Duclos, B.6
  • 44
    • 0029010356 scopus 로고
    • Biosynthesis of lipopolysaccharide O-antigens
    • Whitfield, C. (1995) Biosynthesis of lipopolysaccharide O-antigens. Trends Microbiol., 3, 178-185.
    • (1995) Trends Microbiol. , vol.3 , pp. 178-185
    • Whitfield, C.1
  • 45
    • 0023009301 scopus 로고
    • Characterization of coliphage K30, a bacteriophage specific for Escherichia coli serotype K30
    • Whitfield, C. and Lam, M. (1986) Characterization of coliphage K30, a bacteriophage specific for Escherichia coli serotype K30. FEMS Microbiol. Lett., 37, 351-355.
    • (1986) FEMS Microbiol. Lett. , vol.37 , pp. 351-355
    • Whitfield, C.1    Lam, M.2
  • 46
    • 0033022996 scopus 로고    scopus 로고
    • Structure, assembly and regulation of expression of capsules in Escherichia coli
    • Whitfield, C. and Roberts, I.S. (1999) Structure, assembly and regulation of expression of capsules in Escherichia coli. Mol. Microbiol., 31, 1307-1319.
    • (1999) Mol. Microbiol. , vol.31 , pp. 1307-1319
    • Whitfield, C.1    Roberts, I.S.2
  • 47
    • 0021070376 scopus 로고
    • Outer membrane protein K of Escherichia coli: Purification and pore-forming properties in lipid bilayer membranes
    • Whitfield, C., Hancock, R.E.W. and Costerton, J.W. (1983) Outer membrane protein K of Escherichia coli: purification and pore-forming properties in lipid bilayer membranes. J. Bacteriol., 156, 873-879.
    • (1983) J. Bacteriol. , vol.156 , pp. 873-879
    • Whitfield, C.1    Hancock, R.E.W.2    Costerton, J.W.3
  • 48
    • 0021965148 scopus 로고
    • Membrane proteins correlated with expression of the polysialic acid capsule in Escherichia coli K1
    • Whitfield, C., Vimr, E.R., Costerton, J.W. and Troy, F.A. (1985) Membrane proteins correlated with expression of the polysialic acid capsule in Escherichia coli K1. J. Bacteriol., 161, 743-749.
    • (1985) J. Bacteriol. , vol.161 , pp. 743-749
    • Whitfield, C.1    Vimr, E.R.2    Costerton, J.W.3    Troy, F.A.4
  • 49
    • 0000587078 scopus 로고    scopus 로고
    • Biosynthesis of lipoproteins
    • Neidhardt, F.C. (ed.), ASM Press, Washington, DC
    • Wu, H.C. (1996) Biosynthesis of lipoproteins. In Neidhardt, F.C. (ed.), Escherichia coli and Salmonella: Cellular and Molecular Biology. Vol. 1. ASM Press, Washington, DC, pp. 1005-1014.
    • (1996) Escherichia Coli and Salmonella: Cellular and Molecular Biology , vol.1 , pp. 1005-1014
    • Wu, H.C.1


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