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Gene |

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Expression|

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Standard Name	mqsA
Gene Synonym(s)	mqsA, ygiT^[1], ECK3012, b3021, mqsA, JW2989^[2], JW2989, ygiT
Product Desc.	predicted DNA-binding transcriptional regulator^[3]^[4] Antitoxin for MqsR toxin^[1]
Product Synonyms(s)	predicted DNA-binding transcriptional regulator^[2], B3021^[3]^[2], MqsA^[3]^[2] , ECK3012, JW2989, ygiT, b3021
Function from GO	<GO_nr />
Knock-Out Phenotype
Regulation/Expression	transcription unit(s): mqsA^[3]
Regulation/Activity
Quick Links
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Notes

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Antitoxin MqsA binds DNA via its helix-turn-helix in its C-terminal domain^[1]. Unlike most TA pairs including RelE/RelB, YoeB/YefM and MazF/MazE, the MqsR toxin gene precedes the antitoxin gene in the bicistronic operon^[1]. The MqsR/MqsA TA pair is unique in that (i) the antitoxin is larger than the toxin, (ii) both toxin and antitoxin are basic (typically the toxin is basic while the antitoxin is acidic), (iii) the mqsRA sequences are not homologous to any member of a recognized TA system, (iv) the antitoxin binds the toxin at its amino terminus and requires a metal, zinc, for structural stability, (v) the antitoxin is structured throughout its entire sequence, and (vi) the antitoxin binds more than its own promoter (e.g., mqsRA, mcbR, and spy) via its C-terminal domain^[1] which implies it regulates more than its own transcription. MqsR cleaves mRNA at GCU sites ^[5]. Toxin MsqR could be cloned in an ara vector unless antitoxin MqsA is upreguated (Shah, 2006). MqsA is predicted to also be a transcriptional regulator.^[6]

Gene

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Nomenclature

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See Help:Gene_nomenclature for help with entering information in the Gene Nomenclature table.

Standard name	mqsA
Mnemonic	Motility quorum-sensing
Synonyms	mqsA, ygiT^[1], ECK3012, b3021, mqsA, JW2989^[2], JW2989, ygiT
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Notes

Location(s) and DNA Sequence

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<protect> See Help:Gene_location for help entering information in the Gene Location and DNA sequence table.

Strain	Map location	Genome coordinates	Genome browsers	Sequence links
MG1655	68.23 minutes	MG1655: 3166268..3165873 <gbrowseImage> name=NC_000913:3165873..3166268 source=MG1655 preset=GeneLocation </gbrowseImage>	EcoCyc GBrowse(MG1655)	FASTA Dump EcoCyc Sequence Dump
REL606		NC_012967: 3102418..3102023 <gbrowseImage> name=NC_012967:3102023..3102418 source=REL606 preset=GeneLocation </gbrowseImage>	GBrowse (REL606)	FASTA Dump
BW2952		NC_012759: 3053021..3053416 <gbrowseImage> name=NC_012759:3053021..3053416 source=BW2952 preset=GeneLocation </gbrowseImage>	GBrowse (BW2952)	FASTA Dump
W3110		W3110: 3166902..3166507 <gbrowseImage> name=NC_007779:3166507..3166902 source=W3110 preset=GeneLocation </gbrowseImage>	GBrowse(W3110)	FASTA Dump
DH10B		DH10B: 3264013..3263618 <gbrowseImage> name=NC_010473:3263618..3264013 source=DH10B preset=GeneLocation </gbrowseImage>	GBrowse(DH10B)	FASTA Dump
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Notes

Sequence Features

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See Help:Gene_sequence_features for help in entering sequence features in EcoliWiki.

Feature Type	Strain	Genomic Location	Evidence	Reference	Notes
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Notes

Alleles and Phenotypes

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See Help:Gene_alleles for how to enter or edit alleles and phenotypes in EcoliWiki.

Allele	Nt change(s)	AA change(s)	Phenotype: Type	Phenotype: Description	Reference	Availability	Comments
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Notes

Genetic Interactions

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Interactor	Interaction	Allele	Score(s)	Reference(s)	Accessions	Notes
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Notes

Genetic Resources

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See Help:Gene_resources for help entering information into the Genetic Resources table.

Resource	Resource Type	Source	Notes/Reference
JW2989	Plasmid clone	Shigen	PMID:16769691 Status:Clone OK Primer 1:GCCAAATGTCCGGTTTGCCACCA Primer 2:CCACGGATTTCATTCAATAGTTC
17B2	Kohara Phage	Genobase	PMID:3038334
metC162::Tn10	Linked marker	CAG18475 = CGSC7435^[7]	est. P1 cotransduction: 58% ^[8]
tolC210::Tn10	Linked marker	CAG12184 = CGSC7437^[7]	est. P1 cotransduction: 65% ^[8]
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Notes

Accessions in Other Databases

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See Help:Gene_accessions for help with entering information into the Gene Accessions table.

Database	Accession	Notes
EcoliGenExpDB (EcoliWiki Page)	EcoliGenExpDB:b3021
ECOO157CYC (EcoliWiki Page)	ECOO157CYC:Z1059
EcoCyc (EcoliWiki Page)	ECOCYC:G7571	Escherichia coli str. K-12 substr. MG1655
NCBI (EcoliWiki Page)	GeneID:945814	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:	Escherichia coli str. K-12 substr. MG1655
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Notes

Links

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Name	URL	Comments
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Product(s)

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Nomenclature

See Help:Product_nomenclature for help entering or editing information in this section of EcoliWiki.

Standard name	MqsA
Synonyms	predicted DNA-binding transcriptional regulator^[2], B3021^[3]^[2], MqsA^[3]^[2] , ECK3012, JW2989, ygiT, b3021
Product description	predicted DNA-binding transcriptional regulator^[3]^[4] Antitoxin for MqsR toxin^[1]
EC number (for enzymes)
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Notes

Function

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<protect> Gene Ontology
See Help:Gene_ontology for help entering or editing GO terms and GO annotations in EcoliWiki.

Qualifier	GO ID	GO term name	Reference	Evidence Code	with/from	Aspect	Notes	Status
	GO:0006355	regulation of transcription, DNA-dependent	PMID:19943910	IMP: Inferred from Mutant Phenotype		P	Seeded from EcoCyc (v14.0)	complete
	GO:0043565	sequence-specific DNA binding	GOA:interpro GO_REF:0000002	IEA: Inferred from Electronic Annotation	InterPro:IPR001387	F	Seeded from EcoCyc (v14.0)	complete
	GO:0043565	sequence-specific DNA binding	PMID:19690171	IDA: Inferred from Direct Assay		F	Seeded from EcoCyc (v14.0)	complete
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Interactions See Help:Product_interactions for help entering or editing information about gene product interactions in this section of EcoliWiki.

Partner Type	Partner	References	Evidence
Protein	yfbN	PMID:19402753	LCMS(ID Probability):99.6
Protein	gpmM	PMID:19402753	MALDI(Z-score):28.092127
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Notes

Localization

See Help:Product_localization for how to add or edit information in this section of EcoliWiki.

Compartment	Description	Evidence	Reference/Source	Notes
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Notes

Structure and Physical Properties

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<protect> Physical Properties See Help:Product_physical_properties for help entering or editing information about the physical properties of this gene product.

Name
Sequence	at EcoCyc MKCPVCHQGE MVSGIKDIPY TFRGRKTVLK GIHGLYCVHC EESIMNKEES DAFMAQVKAF RASVNAETVA PEFIVKVRKK LSLTQKEASE IFGGGVNAFS RYEKGNAQPH PSTIKLLRVL DKHPELLNEI R
Length	131
Mol. Wt	14.702 kDa
pI	9.0 (calculated)
Extinction coefficient	4,470 - 4,970 (calc based on 3 Y, W, and 4 C residues)
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Domains/Motifs/Modification Sites

See Help:Product_domains_motifs for help entering or editing information in this section of EcoliWiki.

Type	Residues	Description	Notes	References
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<motif_map/>

Structure
See Help:Product_structure for help entering or editing information in this section of EcoliWiki.

Structures

<beststructure> gene=ygiT taxon=562,83333 </beststructure>

Models

View models at:

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Structure figures

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Notes

Gene Product Resources

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See Help:Product_resources for help with entering or editing information in this section of EcoliWiki.

Resource type	Source	Notes/Reference
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Notes

Accessions in Other Databases

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See Help:Gene_accessions for help with entering information into the Gene Accessions table.

Database	Accession	Notes
NCBI (Protein) (EcoliWiki Page)	GI:16130917	Escherichia coli str. K-12 substr. MG1655
NCBI (Protein) (EcoliWiki Page)	GeneID:945814	Escherichia coli str. K-12 substr. MG1655
UniProt (EcoliWiki Page)	UniProtKB/Swiss-Prot:Q46864	Escherichia coli str. K-12 substr. MG1655
NCBI (Gene) (EcoliWiki Page)	GeneID:945814	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:	Escherichia coli str. K-12 substr. MG1655
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Notes

Links

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Name	URL	Comments
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Expression

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Overview

This is a placeholder for a summary statement on how expression of this gene product is regulated. You can help EcoliWiki by becoming a user and writing/editing this statement.

Cellular Levels

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See Help:Cellular levels

Molecule	Organism or Strain	Value	Units	Experimental Conditions	Assay used	Reference(s)
Protein	E. coli K-12 MG1655	448	molecules/cell/generation	Medium: MOPS Complete Temperature (°C): 37 Doubling time (min): *Growth phase: OD: other:	Ribosome Profiling	PMID: 24766808
Protein	E. coli K-12 MG1655	319	molecules/cell/generation	Medium: MOPS Minimal Temperature (°C): 37 Doubling time (min): *Growth phase: OD: other:	Ribosome Profiling	PMID: 24766808
Protein	E. coli K-12 MG1655	323	molecules/cell/generation	Medium: MOPS Complete without Methionine Temperature (°C): 37 Doubling time (min): *Growth phase: OD: other:	Ribosome Profiling	PMID: 24766808
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Notes

Transcription and Transcriptional Regulation

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See Help:Expression_transcription for help entering or editing information in this section of EcoliWiki.

Transcription unit(s)
ygiT
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Figure courtesy of RegulonDB

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Notes

This is a placeholder for a summary statement about how transcription of this gene is regulated. You can help EcoliWiki by becoming a user and writing/editing this statement.

Translation and Regulation of Translation

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<protect><gbrowseImage> name=NC_000913:3166248..3166288 source=MG1655 flip=1 type=Gene+DNA_+Protein preset=Nterminus </gbrowseImage> This picture shows the sequence around the N-terminus.

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Notes

This is a placeholder for a summary statement about how translation of this gene product is regulated. You can help EcoliWiki by becoming a user and writing/editing this statement.

Turnover and Regulation of Turnover

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Notes

This is a placeholder for a summary statement about turnover of this gene product. You can help EcoliWiki by becoming a user and writing/editing this statement.

Experimental

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<protect> Mutations Affecting Expression See Help:Expression_mutations for help entering or editing information in this section of EcoliWiki.

Allele Name	Mutation	Phenotype	Reference
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Expression Studies See Help:Expression_studies for help entering or editing information in this section of EcoliWiki.

Type	Reference	Notes
microarray	GEO Profiles:b3021 (EcoliWiki Page)	NCBI GEO profiles for ygiT
microarray	GenExpDB:b3021 (EcoliWiki Page)	Summary of data for ygiT from multiple microarray studies
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Expression Resources See Help:Expression_resources for help entering or editing information in this section of EcoliWiki.

Resource Name	Resource Type	Description	Source	Notes
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Notes

Accessions Related to mqsA Expression

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See Help:Gene_accessions for help with entering information into the Gene Accessions table.

Database	Accession	Notes
EcoliGenExpDB (EcoliWiki Page)	EcoliGenExpDB:b3021
RegulonDB	RegulonDB:	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:	Escherichia coli str. K-12 substr. MG1655
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Notes

Links

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Name	URL	Comments
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Evolution

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Homologs in Other Organisms

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See Help:Evolution_homologs for help entering or editing information in this section of EcoliWiki.

Organism	Homologs (Statistics)	Comments
Xenopus tropicalis	ENSXETP00000044668 (score: 1.000; bootstrap: 100%)	From Inparanoid:20070104
E. coli O157	Z1059	From ECOO157CYC
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Do-It-Yourself Web Tools

Notes

Families

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See Help:Gene_accessions for help with entering information into the Gene Accessions table.

Database	Accession	Notes
Superfamily (EcoliWiki Page)	SUPERFAMILY:47413
EcoCyc	EcoCyc:	Escherichia coli str. K-12 substr. MG1655
EcoGene	EcoGene:	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:	Escherichia coli str. K-12 substr. MG1655
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Notes

Links

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Name	URL	Comments
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References

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See Help:References for how to manage references in EcoliWiki.

↑ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 ^1.6 Brown, BL et al. (2009) Three dimensional structure of the MqsR:MqsA complex: a novel TA pair comprised of a toxin homologous to RelE and an antitoxin with unique properties. PLoS Pathog. 5 e1000706 PubMed
↑ ^2.0 ^2.1 ^2.2 ^2.3 ^2.4 ^2.5 ^2.6 ^2.7 Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
↑ ^3.0 ^3.1 ^3.2 ^3.3 ^3.4 ^3.5 ^3.6 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
↑ ^4.0 ^4.1 EcoCyc (release 11.1; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
↑ Yamaguchi, Y et al. (2009) MqsR, a crucial regulator for quorum sensing and biofilm formation, is a GCU-specific mRNA interferase in Escherichia coli. J. Biol. Chem. 284 28746-53 PubMed
↑ EcoGene: Rudd, KE (2000) EcoGene: a genome sequence database for Escherichia coli K-12. Nucleic Acids Res 28:60-4.
↑ ^7.0 ^7.1 CGSC: The Coli Genetics Stock Center
↑ ^8.0 ^8.1 The Tn10 insertion sites determined by Nichols et al. 1998 (PMID:9829956) were reannotated by alignment with E. coli K-12 genome sequence (GenBank accession NC_000913). P1 contransduction frequencies were calculated using the formula of Wu (PMID:5338813).

mqsA:On One Page

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Notes

Gene

Nomenclature

Notes

Location(s) and DNA Sequence

Notes

Sequence Features

Notes

Alleles and Phenotypes

Notes

Genetic Interactions

Notes

Genetic Resources

Notes

Accessions in Other Databases

Notes

Links

Product(s)

Nomenclature

Notes

Function

Notes

Localization

Notes

Structure and Physical Properties

Structure figures

Notes

Gene Product Resources

Notes

Accessions in Other Databases

Notes

Links

Expression

Overview

Cellular Levels

Notes

Transcription and Transcriptional Regulation

Notes

Translation and Regulation of Translation

Notes

Turnover and Regulation of Turnover

Notes

Experimental

Notes

Accessions Related to mqsA Expression

Notes

Links

Evolution

Homologs in Other Organisms

Do-It-Yourself Web Tools

Notes

Families

Notes

Links

References

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