Transcriptional regulation of Salmonella virulence: A phoQ periplasmic domain mutation results in increased net phosphotransfer to phoP

被引:76
作者
Gunn, JS
Hohmann, EL
Miller, SI
机构
[1] UNIV WASHINGTON, DEPT MED, SEATTLE, WA 98195 USA
[2] UNIV WASHINGTON, DEPT MICROBIOL, SEATTLE, WA 98195 USA
[3] MASSACHUSETTS GEN HOSP, INFECT DIS UNIT, BOSTON, MA 02114 USA
[4] HARVARD UNIV, SCH MED, BOSTON, MA 02114 USA
关键词
D O I
10.1128/jb.178.21.6369-6373.1996
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
A mutation in the phoP/phoQ locus (pho-24) that results in unregulated expression of PhoP-activated genes (phenotype PhoP constitutive [PhoP(c)]) was mapped to phoQ. Change of a Thr to Ile at position 48 of PhoQ was responsible for the PhoP(c) phenotype (attenuation of mouse virulence, defects in epithelial cell invasion, and macrophage spacious phagosome formation). PhoP phosphorylation by membrane extracts required PhoQ, and PhoQ Ile-48-containing membranes demonstrated increased net phosphorylation of PhoP.
引用
收藏
页码:6369 / 6373
页数:5
相关论文
共 31 条
[1]   SPACIOUS PHAGOSOME FORMATION WITHIN MOUSE MACROPHAGES CORRELATES WITH SALMONELLA SEROTYPE PATHOGENICITY AND HOST SUSCEPTIBILITY [J].
ALPUCHEARANDA, CM ;
BERTHIAUME, EP ;
MOCK, B ;
SWANSON, JA ;
MILLER, SI .
INFECTION AND IMMUNITY, 1995, 63 (11) :4456-4462
[2]   SALMONELLA STIMULATE MACROPHAGE MACROPINOCYTOSIS AND PERSIST WITHIN SPACIOUS PHAGOSOMES [J].
ALPUCHEARANDA, CM ;
RACOOSIN, EL ;
SWANSON, JA ;
MILLER, SI .
JOURNAL OF EXPERIMENTAL MEDICINE, 1994, 179 (02) :601-608
[3]   SALMONELLA-TYPHIMURIUM ACTIVATES VIRULENCE GENE-TRANSCRIPTION WITHIN ACIDIFIED MACROPHAGE PHAGOSOMES [J].
ARANDA, CMA ;
SWANSON, JA ;
LOOMIS, WP ;
MILLER, SI .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1992, 89 (21) :10079-10083
[4]   A PHOP-REPRESSED GENE PROMOTES SALMONELLA-TYPHIMURIUM INVASION OF EPITHELIAL-CELLS [J].
BEHLAU, I ;
MILLER, SI .
JOURNAL OF BACTERIOLOGY, 1993, 175 (14) :4475-4484
[5]   FURTHER CHARACTERIZATION OF THE PHOP REGULON - IDENTIFICATION OF NEW PHOP-ACTIVATED VIRULENCE LOCI [J].
BELDEN, WJ ;
MILLER, SI .
INFECTION AND IMMUNITY, 1994, 62 (11) :5095-5101
[6]  
DAVIS RW, 1972, ADV BACTERIAL GENETI
[7]   A SALMONELLA LOCUS THAT CONTROLS RESISTANCE TO MICROBICIDAL PROTEINS FROM PHAGOCYTIC-CELLS [J].
FIELDS, PI ;
GROISMAN, EA ;
HEFFRON, F .
SCIENCE, 1989, 243 (4894) :1059-1062
[8]   MUTANTS OF SALMONELLA-TYPHIMURIUM THAT CANNOT SURVIVE WITHIN THE MACROPHAGE ARE AVIRULENT [J].
FIELDS, PI ;
SWANSON, RV ;
HAIDARIS, CG ;
HEFFRON, F .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1986, 83 (14) :5189-5193
[9]   ADAPTIVE ACIDIFICATION TOLERANCE RESPONSE OF SALMONELLA-TYPHIMURIUM [J].
FOSTER, JW ;
HALL, HK .
JOURNAL OF BACTERIOLOGY, 1990, 172 (02) :771-778
[10]   SALMONELLA-TYPHIMURIUM PHOP VIRULENCE GENE IS A TRANSCRIPTIONAL REGULATOR [J].
GROISMAN, EA ;
CHIAO, E ;
LIPPS, CJ ;
HEFFRON, F .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1989, 86 (18) :7077-7081