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Escherichia coli K-12 substr. MG1655 Polypeptide: OsmB osmotically inducible lipoprotein

Gene: osmB Accession Numbers: EG10679 (EcoCyc), b1283, ECK1278

Regulation Summary Diagram: ?

Regulation summary diagram for osmB

The osmB gene of Escherichia coli has been shown to be inducible by both osmotic stress [Jung89] and growth phase signals [Jung90]. The amino-terminal amino acid sequence of OsmB is consistent with the signal sequence of exported proteins and the signal sequence cleavage site is highly homologous to that of other well-characterized bacterial lipoproteins [Jung89]. The incorporation of radiolabeled palmitic acid and the inhibition of signal sequence processing in the presence of globomycin and subsequent accumulation confirmed that OsmB is a lipoprotein [Udovicki89]. Transcriptional fusion studies demonstrated the induction of osmB by hyperosmolarity and during the stationary growth phase at the transcriptional level [Jung90]. Sequence comparison studies found a high degree of similarity between the OsmB protein and the C-terminal region of the beta amyloid protein implicated in Alzheimer's disease [Sunnerhagen92].

Locations: periplasmic space, inner membrane

Map Position: [1,341,134 <- 1,341,352] (28.91 centisomes, 104°)
Length: 219 bp / 72 aa

Molecular Weight of Polypeptide: 6.948 kD (from nucleotide sequence)

Unification Links: ASAP:ABE-0004309 , CGSC:31965 , EchoBASE:EB0673 , EcoGene:EG10679 , EcoliWiki:b1283 , OU-Microarray:b1283 , PortEco:osmB , PR:PRO_000023467 , Pride:P0ADA7 , Protein Model Portal:P0ADA7 , RefSeq:NP_415799 , RegulonDB:EG10679 , String:511145.b1283 , UniProt:P0ADA7

Relationship Links: InterPro:IN-FAMILY:IPR008816 , Pfam:IN-FAMILY:PF05433 , Prosite:IN-FAMILY:PS51257

Genetic Regulation Schematic: ?

Genetic regulation schematic for osmB

GO Terms:

Cellular Component: GO:0005886 - plasma membrane Inferred by computational analysis [UniProtGOA11, UniProtGOA11a]
GO:0016020 - membrane Inferred by computational analysis [UniProtGOA11a]
GO:0019867 - outer membrane Inferred by computational analysis [GOA01a]
GO:0030288 - outer membrane-bounded periplasmic space Inferred by computational analysis [DiazMejia09]

MultiFun Terms: cell processes adaptations osmotic pressure

Essentiality data for osmB knockouts: ?

Growth Medium Growth? T (°C) O2 pH Osm/L Growth Observations
LB enriched Yes 37 Aerobic 6.95   Yes [Gerdes03, Comment 1]
LB Lennox Yes 37 Aerobic 7   Yes [Baba06, Comment 2]
M9 medium with 1% glycerol Yes 37 Aerobic 7.2 0.35 Yes [Joyce06, Comment 3]
MOPS medium with 0.4% glucose Yes 37 Aerobic 7.2 0.22 Yes [Baba06, Comment 2]

Sequence Features

Protein sequence of OsmB osmotically inducible lipoprotein with features indicated

Feature Class Location Citations Comment
Signal-Sequence 1 -> 23
Lipid-Binding-Site 24
UniProt: N-palmitoyl cysteine; Non-Experimental Qualifier: probable;
Chain 24 -> 72
UniProt: Osmotically-inducible lipoprotein B;

Gene Local Context (not to scale): ?

Gene local context diagram

Transcription Units:

Transcription-unit diagram

Transcription-unit diagram


10/20/97 Gene b1283 from Blattner lab Genbank (v. M52) entry merged into EcoCyc gene EG10679; confirmed by SwissProt match.


Baba06: Baba T, Ara T, Hasegawa M, Takai Y, Okumura Y, Baba M, Datsenko KA, Tomita M, Wanner BL, Mori H (2006). "Construction of Escherichia coli K-12 in-frame, single-gene knockout mutants: the Keio collection." Mol Syst Biol 2;2006.0008. PMID: 16738554

DiazMejia09: Diaz-Mejia JJ, Babu M, Emili A (2009). "Computational and experimental approaches to chart the Escherichia coli cell-envelope-associated proteome and interactome." FEMS Microbiol Rev 33(1);66-97. PMID: 19054114

Gerdes03: Gerdes SY, Scholle MD, Campbell JW, Balazsi G, Ravasz E, Daugherty MD, Somera AL, Kyrpides NC, Anderson I, Gelfand MS, Bhattacharya A, Kapatral V, D'Souza M, Baev MV, Grechkin Y, Mseeh F, Fonstein MY, Overbeek R, Barabasi AL, Oltvai ZN, Osterman AL (2003). "Experimental determination and system level analysis of essential genes in Escherichia coli MG1655." J Bacteriol 185(19);5673-84. PMID: 13129938

GOA01a: GOA, DDB, FB, MGI, ZFIN (2001). "Gene Ontology annotation through association of InterPro records with GO terms."

Joyce06: Joyce AR, Reed JL, White A, Edwards R, Osterman A, Baba T, Mori H, Lesely SA, Palsson BO, Agarwalla S (2006). "Experimental and computational assessment of conditionally essential genes in Escherichia coli." J Bacteriol 188(23);8259-71. PMID: 17012394

Jung89: Jung JU, Gutierrez C, Villarejo MR (1989). "Sequence of an osmotically inducible lipoprotein gene." J Bacteriol 1989;171(1);511-20. PMID: 2644204

Jung90: Jung JU, Gutierrez C, Martin F, Ardourel M, Villarejo M (1990). "Transcription of osmB, a gene encoding an Escherichia coli lipoprotein, is regulated by dual signals. Osmotic stress and stationary phase." J Biol Chem 1990;265(18);10574-81. PMID: 1693921

Sunnerhagen92: Sunnerhagen KS, Bhargava V (1992). "Diastolic regional wall motion asynchrony in patients with hypertension." Int J Card Imaging 8(4);231-42. PMID: 1464722

Udovicki89: Udovicki J, Movsesijan M (1989). "[Immunoglobulins in chronic tonsillitis]." Med Pregl 42(11-12);441-2. PMID: 2642204

UniProt09: UniProt Consortium (2009). "UniProt version 15.8 released on 2009-10-01 00:00:00." Database.

UniProt10: UniProt Consortium (2010). "UniProt version 2010-07 released on 2010-06-15 00:00:00." Database.

UniProt15: UniProt Consortium (2015). "UniProt version 2015-01 released on 2015-01-16 00:00:00." Database.

UniProtGOA11: UniProt-GOA (2011). "Gene Ontology annotation based on the manual assignment of UniProtKB Subcellular Location terms in UniProtKB/Swiss-Prot entries."

UniProtGOA11a: UniProt-GOA (2011). "Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries."

Other References Related to Gene Regulation

Boulanger05: Boulanger A, Francez-Charlot A, Conter A, Castanie-Cornet MP, Cam K, Gutierrez C (2005). "Multistress regulation in Escherichia coli: expression of osmB involves two independent promoters responding either to sigmaS or to the RcsCDB His-Asp phosphorelay." J Bacteriol 187(9);3282-6. PMID: 15838058

Ding95: Ding Q, Kusano S, Villarejo M, Ishihama A (1995). "Promoter selectivity control of Escherichia coli RNA polymerase by ionic strength: differential recognition of osmoregulated promoters by E sigma D and E sigma S holoenzymes." Mol Microbiol 1995;16(4);649-56. PMID: 7476160

Kamenšek13: Kamenšek S, Žgur-Bertok D (2013). "Global transcriptional responses to the bacteriocin colicin M in Escherichia coli." BMC Microbiol 13;42. PMID: 23421615

Report Errors or Provide Feedback
Please cite the following article in publications resulting from the use of EcoCyc: Nucleic Acids Research 41:D605-12 2013
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