Rv1737c (narK2)

Current annotations:
- TBCAP: (community-based annotations - see table at bottom of page)
- TBDB: MFS transporter NNP family nitrate/nitrite transporter
- REFSEQ: nitrate/nitrite transporter NarK2
- PATRIC: Nitrate/nitrite transporter
- TUBERCULIST: Possible nitrate/nitrite transporter NarK2
- NCBI: Possible nitrate/nitrite transporter NarK2
- updated information (H37Rv4):
  - gene name: narK2
  - function:
  - reference:
Type: Not Target
Start: 1964183
End: 1965370
Operon:

Trans-membrane region:
Role: III.A.4 - Anions
GO terms:
- GO:0090352 - regulation of nitrate assimilation (Uniprot)
- GO:0055085 - transmembrane transport (Uniprot)
- GO:0042128 - nitrate assimilation (Uniprot)
- GO:0016021 - integral component of membrane (Uniprot)
- GO:0016020 - membrane (Uniprot)
- GO:0005886 - plasma membrane (Uniprot)
- GO:0001666 - response to hypoxia (Uniprot)
Reaction(s) (based on iSM810 metabolic model):
- NO3[c] <=> H[c]
Gene Expression Profile (Transcriptional Responses to Drugs; Boshoff et al, 2004)
Gene Modules extracted from cluster analysis of 249 transcriptomic datasets using ICA
Orthologs among selected mycobacteria
Protein structure:
Search for Homologs in PDB
Top 10 Homologs in PDB (as of Nov 2020): (none with >35% aa id)
Links to additional information on narK2:
- KEGG - nucleotide and amino acid sequences of gene
- Mycobrowser
- PATRIC
- BioCyc
- Systems Biology
- TBDB (updated)
- Phyre2 structure prediction, model: final.casp.pdb (from Mao et al, 2013)
- UniProt
- AlphaFold model
- Vulnerability = 1.507 (from Jeremy Rock's lab)

Amino Acid Sequence

MRGQAANLVLATWISVVNFWAWNLIGPLSTSYARDMSLSSAEASLLVATPILVGALGRIVTGPLTDRFGGRAMLIAVTLASILPVLAVGVAATMGSYALL
VFFGLFLGVAGTIFAVGIPFANNWYQPARRGFSTGVFGMGMVGTALSAFFTPRFVRWFGLFTTHAIVAAALASTAVVAMVVLRDAPYFRPNADPVLPRLK
AAARLPVTWEMSFLYAIVFGGFVAFSNYLPTYITTIYGFSTVDAGARTAGFALAAVLARPVGGWLSDRIAPRHVVLASLAGTALLAFAAALQPPPEVWSA
ATFITLAVCLGVGTGGVFAWVARRAPAASVGSVTGIVAAAGGLGGYFPPLVMGATYDPVDNDYTVGLLLLVATALVACTYTALHAREPVSEEASR

(Nucleotide sequence available on KEGG)

Additional Information

ESSENTIALITY

MtbTnDB - interactive tool for exploring a database of published TnSeq datasets for Mtb

TnSeqCorr - genes with correlated TnSeq profiles across >100 conditions *new*

Classification	Condition	Strain	Method	Reference	Notes
Non-Essential	Sodium Oleate	H37RvMA	Gumbel	Subhalaxmi Nambi	Probability of Essentiality: 0.000000; 3 non-insertions in a row out of 15 sites
Non-Essential	Lignoceric Acid	H37RvMA	Gumbel	Subhalaxmi Nambi	Probability of Essentiality: 0.000000; 3 non-insertions in a row out of 15 sites
Non-Essential	Phosphatidylcholine	H37RvMA	Gumbel	Subhalaxmi Nambi	Probability of Essentiality: 0.000000; 2 non-insertions in a row out of 15 sites
Non-Essential	minimal media + 0.1% glycerol	H37RvMA	Gumbel	Griffin et al. (2011)	Probability of Essentiality: 0.000000; 1 non-insertions in a row out of 15 sites
Non-Essential	minimal media + 0.01% cholesterol	H37RvMA	Gumbel	Griffin et al. (2011)	Probability of Essentiality: 0.000000; 1 non-insertions in a row out of 15 sites
Non-Essential	7H10-glycerol	H37RvMA	TraSH	Sassetti et al. (2003a)
Non-Essential	C57BL/6J mice (8 weeks)	H37RvMA	TraSH	Sassetti et al. (2003b)	Hybridization Ratio: 0.63
Non-Essential	7H09/7H10 + rich media	H37RvMA	MotifHMM	DeJesus et al. (2017)	Fully saturated (14 reps).

TnSeq Data No data currently available.

No TnSeq data currently available for this Target.

RNASeq Data No data currently available.

No RNA-Seq data currently available for this Target.

Metabolomic Profiles No data currently available.

No Metabolomic data currently available for this Target.

Proteomic Data No data currently available.

No Proteomic data currently available for this Target.

Regulatory Relationships from Systems Biology

BioCyc

Gene interactions based on ChIPSeq and Transcription Factor Over-Expression (TFOE) (Systems Biology)

NOTE: Green edges represent the connected genes being classified as differentially essential as a result of the middle gene being knocked out. These interactions are inferred based on RNASeq.

Interactions based on ChIPSeq data

Binds To:
- No bindings to other targets were found.
Bound By:

Interactions based on ChIPSeq data (Minch et al. 2014)

Binds To:
- No bindings to other targets were found.
Bound By:
- No bindings to other targets were found.

Interactions based on TFOE data (Rustad et al. 2014)

Upregulates:
- Does not upregulate other genes.
Upregulated by:
Downregulates:
- Does not downregulate other genes.
Downregulated by:
- Not downregulated by other genes.

Property	Value	Creator	Evidence	Comment
Interaction	RegulatedBy Rv0348	yamir.moreno	IEP	Microarrays. mRNA levels of regulated element measured and compared between wild-type and trans-element mutation (knockout, over expression etc.) performed by using microarray (or macroarray) experiments.. B. Abomoelak, EA. Hoye et al. mosR, a novel transcriptional regulator of hypoxia and virulence in Mycobacterium tuberculosis. J. Bacteriol. 2009
Interaction	RegulatedBy Rv0981	yamir.moreno	IEP	Microarrays. mRNA levels of regulated element measured and compared between wild-type and trans-element mutation (knockout, over expression etc.) performed by using microarray (or macroarray) experiments.. H. He, R. Hovey et al. MprAB is a stress-responsive two-component system that directly regulates expression of sigma factors SigB and SigE in Mycobacterium tuberculosis. J. Bacteriol. 2006
Interaction	RegulatedBy Rv3133c	yamir.moreno	TAS	Literature previously reported link (from Balazsi et al. 2008). Traceable author statement to experimental support. G. Balzsi, AP. Heath et al. The temporal response of the Mycobacterium tuberculosis gene regulatory network during growth arrest. Mol. Syst. Biol. 2008

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