WormMine: Gene WBGene00006672

• WormBase Gene ID: WBGene00006672
• Gene Name: twk-18
• Sequence Name: C24A3.6
• Brief Description: twk-18 encodes one of 44 C. elegans TWK (two-P domain K+) potassium channel subunits that contain two pore-forming domains and four transmembrane domains; TWK-18 was originally defined by gain-of-function mutations that result in embryonic lethality at the two-fold stage, locomotion defects, longer than normal body length, abnormal egg-laying, and temperature-sensitive paralysis; as loss of TWK-18 function via reversion or RNA-mediated interference does not result in any abnormalities, TWK-18 likely functions redundantly with other TWK channels; TWK-18 can function as an outwardly rectifying K+ channel, and is activated by temperature increases, thus making it a temperature-gated channel; TWK-18 is expressed in body wall muscle.
• Organism: Caenorhabditis elegans
• Automated Description: Enables outward rectifier potassium channel activity. Involved in locomotion; muscle contraction; and potassium ion transport. Predicted to be located in plasma membrane. Expressed in body wall musculature.
• Biotype: SO:0001217
• Genetic Position: X :0.481166 ±0.013379
• Length (nt): 3848

1 Organism

• Name: Caenorhabditis elegans
• Taxon Id: 6239

1 Synonyms

• Value: WBGene00006672

Genomics

2 Transcripts

WormMine ID	Sequence Name	Length (nt)	Chromosome Location
Transcript:C24A3.6.2	C24A3.6.2	1571	X: 8988128-8991647
Transcript:C24A3.6.1	C24A3.6.1	1939	X: 8988137-8991975

Other

1 CDSs

WormMine ID	Sequence Name	Length (nt)	Chromosome Location
CDS:C24A3.6	C24A3.6	1386	X: 8988185-8988245

10 RNAi Result

• WBRNAi00089809
• WBRNAi00041054
• WBRNAi00011079
• WBRNAi00011080
• WBRNAi00027785
• WBRNAi00092870
• WBRNAi00066655
• WBRNAi00090013
• WBRNAi00090172
• WBRNAi00090331

55 Allele

• gk964260
• gk962707
• gk963732
• gk964126
• gk961371
• gk964112
• tm12200
• WBVar02065426
• WBVar02065427
• WBVar02065425
• sa589
• gk951644
• h12521
• e2383
• e1913e2383
• e1913
• bln213
• gk489891
• WBVar01845965
• gk449537
• gk447345
• gk757765
• gk572348
• gk584741
• gk450234
• gk288626
• gk848115
• gk288625
• gk595380
• gk288624

1 Chromosome

• WormBase ID: X
• Organism: Caenorhabditis elegans
• Length (nt): 17718942

1 Chromosome Location

• Feature . Primary Identifier: WBGene00006672
• Start: 8988128
• End: 8991975
• Strand: 1

4 Data Sets

• WormBaseAcedbConverter
• GO Annotation data set
• C. elegans genomic annotations (GFF3 Gene)
• Panther orthologue and paralogue predictions

1 Downstream Intergenic Region

• WormBase ID: intergenic_region_chrX_8991976..8992405
• Length (nt): 430
• Chromosome Location: X: 8991976-8992405
• Organism: Caenorhabditis elegans

173 Expression Clusters

Regulated By Treatment	Description	Algorithm	Primary Identifier
	Genes with expression altered >= 3-fold in dpy-10(e128) mutants.	Data across the wild type series was analyzed using the Significance analysis of Microarrays (SAM) algorithm (to calculate the False Discovery Rate (FDR)).	WBPaper00035873:dpy-10_regulated
	Transcripts expressed in neuronal cells, by analyzingfluorescence-activated cell sorted (FACS) neurons.	DESeq. False discovry rate (FDR) < 0.1.	WBPaper00048988:neuron_expressed
adult vs dauer larva	Transcripts that showed differential expression in adult vs dauer lava in N2 animals at 20C.	N.A.	WBPaper00050488:adult_vs_dauer_regulated_N2_20C
	TGF- Dauer pathway adult transcriptional targets. Results obtained by comparing the microarray results of the dauer-constitutive mutants daf-7(e1372), daf-7(m62), and daf-1(m40) with dauer-defective mutants daf-3(mgDf90), daf-5(e1386), and daf-7(e1372);daf-3(mgDf90) double mutants at the permissive temperature, 20C, on the first day of adulthood.	SAM	WBPaper00031040:TGF-beta_adult_upregulated
Osmotic stress	Transcripts that showed significantly altered expression with 500 mM salt (NaCl) vs 100 mM salt when food was present	DESeq(version 1.10.1), FDR < 0.05.	WBPaper00050726:OsmoticStress_regulated_Food
	Transcripts that showed significantly increased expression glp-1(e2141); TU3401 animals comparing to in TU3401 animals.	Fold change > 2, FDR < 0.01.	WBPaper00065993:glp-1(e2141)_upregulated
	Transcripts that showed significantly increased expression after animals were treated with 50uM Rifampicin from day 1 to day 3 adult hermaphradite.	DESeq2(v1.14.1), fold change > 2, p-value < 0.05	WBPaper00055354:Rifampicin_upregulated
	Genes that showed significantly increased expression in wrn-1(gk99) comparing to in N2, according to RNAseq.	DESeq was used to calculate the fold changes, log fold changes, and significance of the changes for each comparison.	WBPaper00045934:wrn-1(gk99)_upregulated
	Proteins interacting with NHR-49-GFP according to co-IP and LC-MS.	N.A.	WBPaper00064071:NHR-49_interacting
	Transcripts expressed in the epithelial tissues surrounding the pharynx that includes the arcade and intestinal valve (AIV) cells, according to PAT-Seq analysis using Pbath-15-GFP-3XFLAG mRNA tagging.	Cufflinks FPKM value >=1.	WBPaper00050990:arcade_intestinal-valve_expressed
	Transcripts that showed significantly decreased expression at 5-days-post L4 adult N2 hermaphrodites comparing to 1-day-post L4 adult N2 hermaphrodites.	DESeq2, fold change > 2, FDR < 0.05	WBPaper00065835:Day5_vs_Day1_downregulated
	Transcripts expressed in GABAergic neuron, according to PAT-Seq analysis using Punc-47-GFP-3XFLAG mRNA tagging.	Cufflinks FPKM value >=1.	WBPaper00050990:GABAergic-neuron_expressed
	Transcripts that showed significantly decreased expression at 11-days-post L4 adult N2 hermaphrodites comparing to 1-day-post L4 adult N2 hermaphrodites.	DESeq2, fold change > 2, FDR < 0.05	WBPaper00065835:Day11_vs_Day1_downregulated
	Transcripts that showed significantly decreased expression in atfs-1(cmh15) (null allele) animals comparing to in N2 animals at L4 larva stage.	edgeR, fold change > 2, FDR < 0.05	WBPaper00060909:atfs-1(cmh15)_downregulated
	Transcripts expressed in intestine, according to PAT-Seq analysis using Pges-1-GFP-3XFLAG mRNA tagging.	Cufflinks FPKM value >=1.	WBPaper00050990:intestine_expressed
mitochondrial sulfide delivery molecule (mtH2S) AP39	Transcripts that showed significantly increased expression in N2 animals treated with mitochondrial sulfide delivery molecule (mtH2S) AP39 starting from 1-day-post L4 until 11 days post L4.	DESeq2, fold change > 2, FDR < 0.05	WBPaper00065835:mtH2S-AP39-D0-treatment_upregulated_Day11
	Transcripts that showed significantly decreased expression in day 3 adult hermaphrodite comparing to in L4 larva daf-16(mu86);glp-1(e2141) animals.	Fold change > 2, FDR < 0.05	WBPaper00064088:Day-3-adult_vs_L4_downregulated_daf-16(mu86);glp-1(e2141)
	Transcripts that showed significantly decreased expression in day 3 adult hermaphrodite comparing to in L4 larva glp-1(e2141) animals.	Fold change > 2, FDR < 0.05	WBPaper00064088:Day-3-adult_vs_L4_downregulated_glp-1(e2141)
	Transcripts that showed significantly increased expression in rrf-3(pk1426) comparing to in N2 at embryo stage.	DESeq2v 1.18.1, fold change > 1.5, adjusted p-value < 0.01.	WBPaper00056169:rrf-3(pk1426)_upregulated_embryo
Bacteria infection: Bacillus thuringiensis	mRNAs that showed significantly decreased expression after pathogenic bacteria Bacillus thuringiensis infections comparing to non pathogenic BT (BT247(1 to 10 mix) vs BT407 12h), according to RNAseq.	Cuffdiff, ajusted p-value < 0.01.	WBPaper00046497:B.thuringiensis_0.1mix_downregulated_12h
	Transcripts that showed significantly increased expression after four-day-old young adult worms were placed on NGM plates seeded with OP50 in the presence 5% Agaro-oligosaccharides(AGO) for 24 h, comparing to animals grown in the absence of AGO.	Fold change > 2.	WBPaper00064306:Agaro-oligosaccharides_upregulated
	Transcripts that showed significantly increased expression in sin-3(tm1276) comparing to in N2.	DESeq2, fold change > 2, p-value < 0.01.	WBPaper00061203:sin-3(tm1276)_upregulated
Bacteria infection: Bacillus thuringiensis	mRNAs that showed significantly decreased expression after pathogenic bacteria Bacillus thuringiensis infections comparing to non pathogenic BT (BT247(1 to 2 mix) vs BT407 12h), according to RNAseq.	Cuffdiff, ajusted p-value < 0.01.	WBPaper00046497:B.thuringiensis_0.5mix_downregulated_12h
	Transcripts that showed significantly increased expression in aak-1(tm1944);aak-2(ok524) animals comparing to in N2.	DEseq 1.18.0, adjusted p-value < 0.05.	WBPaper00056471:aak-1(tm1944);aak-2(ok524)_upregulated
	Genes that showed significantly increased expression in daf-2(e1370);hel-1(gk148684) comparing to in hel-1(gk148684)	To identify DEGs, Students t test and the log2 median ratio test were performed to compute t values and median ratios for all the annotated genes. The adjusted P values from each test were computed using an empirical distribution of the null hypothesis, which was obtained from random permutations of the samples. Finally, the adjusted P values from the individual tests were combined to compute the overall P values using Stouffers method , and genes with overall P < 0.05 and fold change > 1.5 were selected as DEGs.	WBPaper00047131:daf-2(e1370)_upregulated_hel-1(gk148684)-background
	Genes that showed significantly increased expression in daf-2(e1370) comparing to in N2.	To identify DEGs, Students t test and the log2 median ratio test were performed to compute t values and median ratios for all the annotated genes. The adjusted P values from each test were computed using an empirical distribution of the null hypothesis, which was obtained from random permutations of the samples. Finally, the adjusted P values from the individual tests were combined to compute the overall P values using Stouffers method , and genes with overall P < 0.05 and fold change > 1.5 were selected as DEGs.	WBPaper00047131:daf-2(e1370)_upregulated_N2-background
	Transcripts that showed significantly decreased expression in N2 animals exposed to 0.1mM Paraquat from hatching to reaching adult stage.	DESeq2 version 1.22.2, p < 0.05	WBPaper00064716:paraquat_downregulated
	Significantly upregulated genes from clk-1(qm30) microarrays using SAM algorithm with an FDR < 0.1 from adult-only chips.	SAM algorithm with an FDR < 0.1.	WBPaper00033065:clk-1(qm30)_upregulated
	Transcripts that showed significantly changed expression in 6-day post-L4 adult hermaphrodite comparing to in 1-day post L4 adult hermaphrodite animals.	Sleuth	WBPaper00051558:aging_regulated
	Transcripts that showed significantly altered expression after 24 hour exposure to stavudine (d4T) starting at L1 lava stage.	DESeq	WBPaper00053302:stavudine_24h_regulated

7 Expression Patterns

• Primary Identifier: Expr2035785
• Pattern: Single cell embryonic expression. Only cell types with an expression fraction of greater 0.2 of the maximum expressed fraction are labeled (Full data can be downloaded from http://caltech.wormbase.org/pub/wormbase/datasets-published/packer2019/). The colors represent the broad cell class to which the cell type has been assigned. The size of the point is proportional to the log2 of the numbers of cells in the dataset of that cell type. Interactive visualizations are available as a web app (https://cello.shinyapps.io/celegans/) and can also be installed as an R package (https://github.com/qinzhu/VisCello.celegans).

• Primary Identifier: Expr1032771
• Pattern: Tiling arrays expression graphs

• Primary Identifier: Expr2447
• Pattern: Expressed in body-wall muscle.

• Primary Identifier: Expr1110
• Pattern: Four independent twk-18::gfp lines were generated, which displayed a GFP signal only in body wall muscle.

• Primary Identifier: Expr1023104
• Pattern: Developmental gene expression time-course. Raw data can be downloaded from ftp://caltech.wormbase.org/pub/wormbase/datasets-published/levin2012

• Primary Identifier: Expr2017645
• Pattern: Single cell embryonic expression. Only cell types with an expression fraction of greater 0.2 of the maximum expressed fraction are labeled (Full data can be downloaded from http://caltech.wormbase.org/pub/wormbase/datasets-published/packer2019/). The colors represent the broad cell class to which the cell type has been assigned. The size of the point is proportional to the log2 of the numbers of cells in the dataset of that cell type. Interactive visualizations are available as a web app (https://cello.shinyapps.io/celegans/) and can also be installed as an R package (https://github.com/qinzhu/VisCello.celegans).

• Primary Identifier: Expr1145092
• Pattern: Developmental gene expression time-course. Raw data can be downloaded from ftp://caltech.wormbase.org/pub/wormbase/datasets-published/hashimshony2015

16 GO Annotation

10 Homologues

1 Locations

• Feature . Primary Identifier: WBGene00006672
• Start: 8988128
• End: 8991975
• Strand: 1

16 Ontology Annotations

0 Regulates Expr Cluster

1 Sequence

• Length: 3848

1 Sequence Ontology Term

• Name: gene

6 Strains

• WBStrain00027095
• WBStrain00034920
• WBStrain00037842
• WBStrain00055065
• WBStrain00004494
• WBStrain00004563

1 Upstream Intergenic Region

• WormBase ID: intergenic_region_chrX_8986700..8988127
• Length (nt): 1428
• Chromosome Location: X: 8986700-8988127
• Organism: Caenorhabditis elegans