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Expression|

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Standard Name	narK
Gene Synonym(s)	ECK1217, b1223, JW1214^[1], JW1214
Product Desc.	NarK nitrite MFS transporter^[2]^[3] Nitrate/nitrite antiporter; promotes nitrite extrusion and uptake^[4]
Product Synonyms(s)	nitrate/nitrite transporter^[1], B1223^[2]^[1], NarK^[2]^[1] , ECK1217, JW1214, b1223
Function from GO	<GO_nr />
Knock-Out Phenotype
Regulation/Expression	transcription unit(s): narK^[2], OP00061
Regulation/Activity
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Notes

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Major Facilitator Superfamily (MFS).^[4]

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	narK
Mnemonic	Nitrate reductase, nitrate regulation
Synonyms	ECK1217, b1223, JW1214^[1], JW1214
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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	27.53 minutes	MG1655: 1277180..1278571 <gbrowseImage> name=NC_000913:1277180..1278571 source=MG1655 preset=GeneLocation </gbrowseImage>	EcoCyc GBrowse(MG1655)	FASTA Dump EcoCyc Sequence Dump
REL606		NC_012967: 1278107..1279498 <gbrowseImage> name=NC_012967:1278107..1279498 source=REL606 preset=GeneLocation </gbrowseImage>	GBrowse (REL606)	FASTA Dump
BW2952		NC_012759: 1165901..1167292 <gbrowseImage> name=NC_012759:1165901..1167292 source=BW2952 preset=GeneLocation </gbrowseImage>	GBrowse (BW2952)	FASTA Dump
W3110		W3110: 1279534..1280925 <gbrowseImage> name=NC_007779:1279534..1280925 source=W3110 preset=GeneLocation </gbrowseImage>	GBrowse(W3110)	FASTA Dump
DH10B		DH10B: 1317421..1318812 <gbrowseImage> name=NC_010473:1317421..1318812 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
narK(del) (Keio:JW1214)	deletion	deletion			PMID:16738554	Shigen
narK::Tn5KAN-2 (FB20269)	Insertion at nt 248 in Plus orientation				PMID:15262929	E. coli Genome Project:FB20269	does not contain pKD46
nar-203::Tn10			Enzyme Activity	Mutant is NarK^- and has Reduced Formate activity	PMID:7047497	Experimental strain: RK5266	table 5
nar-203::Tn10			Enzyme Activity	Mutant is NarK^- and has an Incrase in nitrase reductase activity	PMID:7047497	Experimental Strain: RK5266	table 5
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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
JW1214	Plasmid clone	Shigen	PMID:16769691 Status:Clone OK Primer 1:GCCAGTCACTCATCCGCCCCCGA Primer 2:CCTTTTTTAGAATGCCGACCATA
13H6	Kohara Phage	Genobase	PMID:3038334
12H9	Kohara Phage	Genobase	PMID:3038334
fadR13::Tn10	Linked marker	CAG18497 = CGSC7365^[5]	est. P1 cotransduction: 15% ^[6]
oppC506::Tn10	Linked marker	CAG12169 = CGSC7369^[5]	est. P1 cotransduction: 36% ^[6] Synonyms:zch-506::Tn10, zci-506::Tn10
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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
EcoCyc	EcoCyc:EG10642	Escherichia coli str. K-12 substr. MG1655
EcoGene	EcoGene:EG10642	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:ECK120000635	Escherichia coli str. K-12 substr. MG1655
NCBI (EcoliWiki Page)	GeneID:945783	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:EB0636	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:ABE-0004111	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	NarK
Synonyms	nitrate/nitrite transporter^[1], B1223^[2]^[1], NarK^[2]^[1] , ECK1217, JW1214, b1223
Product description	NarK nitrite MFS transporter^[2]^[3] Nitrate/nitrite antiporter; promotes nitrite extrusion and uptake^[4]
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:0005886	plasma membrane	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-0997	C	Seeded from EcoCyc (v14.0)	complete
	GO:0005886	plasma membrane	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-1003	C	Seeded from EcoCyc (v14.0)	complete
	GO:0016020	membrane	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-0472	C	Seeded from EcoCyc (v14.0)	complete
	GO:0016021	integral to membrane	GOA:interpro GO_REF:0000002	IEA: Inferred from Electronic Annotation	InterPro:IPR004737	C	Seeded from EcoCyc (v14.0)	complete
	GO:0016021	integral to membrane	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-0812	C	Seeded from EcoCyc (v14.0)	complete
	GO:0016021	integral to membrane	GO_REF:0000023	IEA: Inferred from Electronic Annotation	SP_SL:SL-9909	C	Seeded from EcoCyc (v14.0)	complete
	GO:0042128	nitrate assimilation	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-0534	P	Seeded from EcoCyc (v14.0)	complete
	GO:0055085	transmembrane transport	GOA:interpro GO_REF:0000002	IEA: Inferred from Electronic Annotation	InterPro:IPR011701	P	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
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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
plasma membrane	C-terminus localized in the cytoplasm with 12 predicted transmembrane domains	Daley et al. (2005) ^[7]
plasma membrane			From EcoCyc^[3]
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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 MSHSSAPERA TGAVITDWRP EDPAFWQQRG QRIASRNLWI SVPCLLLAFC VWMLFSAVAV NLPKVGFNFT TDQLFMLTAL PSVSGALLRV PYSFMVPIFG GRRWTAFSTG ILIIPCVWLG FAVQDTSTPY SVFIIISLLC GFAGANFASS MANISFFFPK QKQGGALGLN GGLGNMGVSV MQLVAPLVVS LSIFAVFGSQ GVKQPDGTEL YLANASWIWV PFLAIFTIAA WFGMNDLATS KASIKEQLPV LKRGHLWIMS LLYLATFGSF IGFSAGFAML SKTQFPDVQI LQYAFFGPFI GALARSAGGA LSDRLGGTRV TLVNFILMAI FSGLLFLTLP TDGQGGSFMA FFAVFLALFL TAGLGSGSTF QMISVIFRKL TMDRVKAEGG SDERAMREAA TDTAAALGFI SAIGAIGGFF IPKAFGSSLA LTGSPVGAMK VFLIFYIACV VITWAVYGRH SKK
Length	463
Mol. Wt	49.695 kDa
pI	10.0 (calculated)
Extinction coefficient	70,930 - 71,555 (calc based on 7 Y, 11 W, and 5 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
Domain	44..422	PF07690 Major Facilitator Superfamily		PMID:19920124
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<motif_map/>

Click the image to view raw output from TMHMM.

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

Structures

<beststructure> gene=narK 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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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:16129186	Escherichia coli str. K-12 substr. MG1655
NCBI (Protein) (EcoliWiki Page)	GeneID:945783	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:ABE-0004111	Escherichia coli str. K-12 substr. MG1655
UniProt (EcoliWiki Page)	UniProtKB/Swiss-Prot:P10903	Escherichia coli str. K-12 substr. MG1655
EcoCyc	EcoCyc:EG10642	Escherichia coli str. K-12 substr. MG1655
EcoGene	EcoGene:EG10642	Escherichia coli str. K-12 substr. MG1655
NCBI (Gene) (EcoliWiki Page)	GeneID:945783	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:ECK120000635	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:EB0636	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	Notes	Reference(s)
Protein	E. coli K-12 MG1655	1^a	molecules/cell/generation	Medium: MOPS Complete Temperature (°C): 37 Doubling time (min): *Growth phase: OD: other:	Ribosome Profiling	Low confidence in the sequencing data set.	PMID: 24766808
Protein	E. coli K-12 MG1655	6	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	0^a	molecules/cell/generation	Medium: MOPS Complete without Methionine Temperature (°C): 37 Doubling time (min): *Growth phase: OD: other:	Ribosome Profiling	Low confidence in the sequencing data set.	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)
narK
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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_000913:1277160..1277200 source=MG1655 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:b1223 (EcoliWiki Page)	NCBI GEO profiles for narK
microarray	GenExpDB:b1223 (EcoliWiki Page)	Summary of data for narK 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 narK Expression

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

Database	Accession	Notes
EcoCyc	EcoCyc:EG10642	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:EB0636	Escherichia coli str. K-12 substr. MG1655
EcoliGenExpDB (EcoliWiki Page)	EcoliGenExpDB:b1223
EcoGene	EcoGene:EG10642	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:ECK120000635	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:ABE-0004111	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	ENSXETP00000033293 (score: 1.000; bootstrap: 100%)	From Inparanoid:20070104
Shigella flexneri	NARK	From SHIGELLACYC
E. coli O157	NARK	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:103473
Pfam (EcoliWiki Page)	PF07690 Major Facilitator Superfamily
EcoCyc	EcoCyc:EG10642	Escherichia coli str. K-12 substr. MG1655
EcoGene	EcoGene:EG10642	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:ECK120000635	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:EB0636	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:ABE-0004111	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 ^1.7 Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
↑ ^2.0 ^2.1 ^2.2 ^2.3 ^2.4 ^2.5 ^2.6 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
↑ ^3.0 ^3.1 ^3.2 EcoCyc (release 11.1; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
↑ ^4.0 ^4.1 ^4.2 EcoGene: Rudd, KE (2000) EcoGene: a genome sequence database for Escherichia coli K-12. Nucleic Acids Res 28:60-4.
↑ ^5.0 ^5.1 CGSC: The Coli Genetics Stock Center
↑ ^6.0 ^6.1 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).
↑ Daley, DO et al. (2005) Global topology analysis of the Escherichia coli inner membrane proteome. Science 308 1321-3 PubMed

narK: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 narK Expression

Notes

Links

Evolution

Homologs in Other Organisms

Do-It-Yourself Web Tools

Notes

Families

Notes

Links

References

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