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Standard Name	mazF
Gene Synonym(s)	chpA, ECK2776, b2782, JW2753, chpAK, pemK, mazF ^[1]^[2]
Product Desc.	toxin of the MazEF "addiction module" that exhibits ribonuclease activity; MazF toxin of the MazF-MazE toxin-antitoxin system that exhibits ribonuclease activity; Component of MazF toxin of the MazF-MazE toxin-antitoxin system that exhibits ribonuclease activity; MazE-MazF complex MazF toxin and mRNA interferase, antitoxin is MazE; inhibitor of translation by mRNA cleavage
Product Synonyms(s)	toxin of the ChpA-ChpR toxin-antitoxin system, endoribonuclease, B2782, MazF, ChpA, ChpAK , chpA, chpAK, ECK2776, JW2753, b2782
Function from GO	<GO_nr />
Knock-Out Phenotype
Regulation/Expression
Regulation/Activity
Quick Links
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Notes

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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	mazF
Mnemonic
Synonyms	chpA, ECK2776, b2782, JW2753, chpAK, pemK, mazF ^[1]^[2]
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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	62.69 minutes, 62.69 minutes	MG1655: 2909113..2908778 <gbrowseImage> name=NC_000913:2908778..2909113 source=MG1655 preset=GeneLocation </gbrowseImage>	EcoCyc GBrowse(MG1655)	FASTA Dump EcoCyc Sequence Dump
W3110		W3110: 2909747..2909412 <gbrowseImage> name=NC_007779:2909412..2909747 source=W3110 preset=GeneLocation </gbrowseImage>	GBrowse(W3110)	FASTA Dump
DH10B		DH10B: 3001655..3001320 <gbrowseImage> name=NC_010473:3001320..3001655 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
chpA781(del)::kan					PMID:16738554	CGSC:100310
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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

Plasmid clone

Shigen

PMID:16769691

Status:

Primer 1:

Primer 2:

8B9

Kohara Phage

Genobase

PMID:3038334

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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 (EcoliWiki Page)	GeneID:947252	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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Product(s)

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Nomenclature

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

Standard name	MazF
Synonyms	toxin of the ChpA-ChpR toxin-antitoxin system, endoribonuclease, B2782, MazF, ChpA, ChpAK , chpA, chpAK, ECK2776, JW2753, b2782
Product description	toxin of the MazEF "addiction module" that exhibits ribonuclease activity; MazF toxin of the MazF-MazE toxin-antitoxin system that exhibits ribonuclease activity; Component of MazF toxin of the MazF-MazE toxin-antitoxin system that exhibits ribonuclease activity; MazE-MazF complex MazF toxin and mRNA interferase, antitoxin is MazE; inhibitor of translation by mRNA cleavage
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. 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:0003677	DNA binding	GOA:interpro GO_REF:0000002	IEA: Inferred from Electronic Annotation	InterPro:IPR003477	F	Seeded from EcoCyc (v14.0)	complete
	GO:0003677	DNA binding	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-0238	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	Notes	References	Evidence
Protein	Subunits of MazF toxin of the MazF-MazE toxin-antitoxin system that exhibits ribonuclease activity	could be indirect
Protein	yibL		PMID:16606699	Experiment(s):EBI-1143931
Protein	Subunits of MazE-MazF complex	could be indirect
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See Help:Product_interactions for help entering or editing information about gene product interactions in this section of EcoliWiki. </protect>

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 MVSRYVPDMG DLIWVDFDPT KGSEQAGHRP AVVLSPFMYN NKTGMCLCVP CTTQSKGYPF EVVLSGQERD GVALADQVKS IAWRARGATK KGTVAPEELQ LIKAKINVLI G
Length	111
Mol. Wt	12.097 kDa
pI	8.4 (calculated)
Extinction coefficient	15,470 - 15,845 (calc based on 3 Y, 2 W, and 3 C residues)
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See Help:Product_physical_properties for help entering or editing information about the physical properties of this gene product.

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
Domain	8..110	PF02452 PemK-like protein		PMID:19920124
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See Help:Product_domains_motifs for help entering or editing information in this section of EcoliWiki.

<motif_map/>

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

Structures

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

Models

View models at:

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

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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:16130689	Escherichia coli str. K-12 substr. MG1655
NCBI (Protein) (EcoliWiki Page)	GeneID:947252	Escherichia coli str. K-12 substr. MG1655
UniProt (EcoliWiki Page)	UniProtKB/Swiss-Prot:P0AE70	Escherichia coli str. K-12 substr. MG1655
NCBI (Gene) (EcoliWiki Page)	GeneID:947252	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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See Help:Links_table for how to enter or edit information in this section of EcoliWiki.

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	253	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	123	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	287	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

Cellular Levels

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Molecule	Organism or Strain	Value	Units	Experimental Conditions	Assay used	Reference(s)
Protein	E. coli K-12 MG1655	253	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	123	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	287	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)
mazEF
relA-mazEF
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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_000913:2909093..2909133 source=MG1655 flip=1 type=Gene+DNA_+Protein preset=Nterminus </gbrowseImage> This picture shows the sequence around the N-terminus.

</protect>

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:b2782 (EcoliWiki Page)	NCBI GEO profiles for mazF
microarray	GenExpDB:b2782 (EcoliWiki Page)	Summary of data for mazF 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 chpA 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:b2782
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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<protect> See Help:Evolution_homologs for help entering or editing information in this section of EcoliWiki.

Organism	Homologs (Statistics)	Comments
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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
Pfam (EcoliWiki Page)	PF02452 PemK-like protein
Superfamily (EcoliWiki Page)	SUPERFAMILY:50118
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 Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
↑ ^2.0 ^2.1 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7

mazF: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

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 chpA Expression

Notes

Links

Evolution

Homologs in Other Organisms

Do-It-Yourself Web Tools

Notes

Families

Notes

Links

References

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