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- ********************************************************
- * Bacterial regulatory proteins, lysR family signature *
- ********************************************************
-
- The many bacterial transcription regulation proteins which bind DNA through a
- 'helix-turn-helix' motif can be classified into subfamilies on the basis of
- sequence similarities. One of these subfamilies, called 'lysR' [1,2], groups
- together the following proteins (references are only provided for recently
- determined sequences).
-
- Gene Gene(s) regulated Species Ref.
- ---- ----------------------------------- --------------------------- ----
- alsR aslSD; acetoin synthesis B. subtilis
- ampR ampC; cephalosporinase E. coli, C. freundii, etc.
- blaA blaL; beta-lactamase Streptomyces cacaoi
- catM CAT operon; catechol degradation Acinetobacter calcoaceticus
- catR catBC operon; benzoate degradation Pseudomonas putida
- cynR cynTSX operon; cyanate E. coli [3]
- cysB Cysteine biosynthesis regulon E. coli
- gcvA Glycine cleavage operon E. coli
- gltC gltAB; glutamate biosynthesis Bacillus subtilis
- grbR chvE; sugar transport Agrobacterium tumefaciens
- iciA Inhibitor of chromosomal initiation
- of replication E. coli [4]
- ilvY ilvC; ketol-acid reductoisomerase E. coli, S. typhimurium
- irgB irgA; iron-regulated virulence Vibrio cholerae
- lysR lysA; diaminopimelate decarboxylase E. coli
- metR metEH; methionine biosynthesis E. coli, S. typhimurium
- mkaC spvABC; virulence of a 96 Kd plasmid S. typhimurium
- mleR Malolactic fermentation Lactococcus lactis
- nahR Naphthalene/salicylate metabolism Pseudomonas putida
- nhaR nhaA; Na(+)/H(+) antiporter E. coli
- nocR noc operon; nopaline Agrobacterium tumefaciens
- nodD nodABCFE; nodulation Rhizobium
- nolR nod regulon; nodulation Rhizobium [5]
- occR occ operon; octopine Agrobacterium tumefaciens
- oxyR Hydrogen peroxide-inducible genes E. coli
- pssR Phosphatidylserine synthetase (?) E. coli
- rbcR rbcAB; RuBisCO Chromatium vinosum
- syrM Nodulation genes Rhizobium meliloti
- tcbR tcbCDEF; chlorocatechol degradation Pseudomonas sp. strain p51
- tdcA tdcABC; threonine metabolism E. coli
- tfdS tfdB Alcaligenes eutrophus
- trpI trpAB; tryptophan synthase subunits Pseudomonas aeruginosa
-
- cfxO Probably cfxLS; RuBisCO Xanthobacter flavus
- leuO Not known; between leuABCD & ilvIH E. coli
- yafC Not known; coded downstream of rrnH E. coli
- yeiE Not known; coded upstream of lysP E. coli
- yfeB Not known; coded downstream of gltX E. coli
- yfiE Not known; coded upstream of ung E. coli
- yidZ Not known; coded upstream of tnaB E. coli
-
- Most, but not all, of these proteins seems to be transcription activators and
- most of them are known to negatively regulates their own expression. They all
- possess a potential 'helix-turn-helix' DNA-binding motif in their N-terminal
- section. The pattern we use to detect these proteins spans the complete helix-
- turn-helix motif and extend six residues upstream of its C-terminal extremity.
-
- -Consensus pattern: [LIVMFYT]-x(2)-[STGALV]-[STA]-x(5)-[PSTA]-[PNQHKR]-x(2)-
- [LIVMA]-[STA]-x(2)-[LIVMFW]-x(2)-[LIVMFW]-[RKEQA]-x(2)-
- [LIVMFYNT]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: 11.
-
- -Expert(s) to contact by email: Henikoff S.
- henikoff@sparky.fhcrc.org
-
- -Last update: June 1994 / Pattern and text revised.
-
- [ 1] Henikoff S., Haughn G.W., Calvo J.M., Wallace J.C.
- Proc. Natl. Acad. Sci. U.S.A. 85:6602-6606(1988).
- [ 2] Viale A.M., Kobayashi H., Akazawa T., Henikoff S.
- J. Bacteriol. 173:5224-5229(1991).
- [ 3] Sung Y.-C., Fuchs J.A.
- J. Bacteriol. 174:3645-3650(1992).
- [ 4] Thoeny B., Hwang D.S., Fradkin L., Kornberg A.
- Proc. Natl. Acad. Sci. U.S.A. 88:4066-4070(1991).
- [ 5] Kondorosi E., Pierre M., Cren M., Haumann U., Buire M., Hoffmann B.,
- Schell J., Kondorosi A.
- J. Mol. Biol. 222:885-896(1991).
-