WormMine: Gene WBGene00002142

• WormBase Gene ID: WBGene00002142
• Gene Name: inx-20
• Sequence Name: T23H4.1
• Organism: Caenorhabditis elegans
• Automated Description: Predicted to enable gap junction channel activity. Predicted to be involved in monoatomic ion transmembrane transport. Predicted to be located in gap junction and plasma membrane. Expressed in pharyngeal cell and rectal valve cell.
• Biotype: SO:0001217
• Genetic Position: I :3.9734 ±0.002657
• Length (nt): 4521

1 Organism

• Name: Caenorhabditis elegans
• Taxon Id: 6239

1 Synonyms

• Value: WBGene00002142

Genomics

3 Transcripts

WormMine ID	Sequence Name	Length (nt)	Chromosome Location
Transcript:T23H4.1b.1	T23H4.1b.1	1407	I: 9874698-9879119
Transcript:T23H4.1a.1	T23H4.1a.1	1549	I: 9876528-9879216
Transcript:T23H4.1c.1	T23H4.1c.1	1473	I: 9876969-9879218

Other

3 CDSs

WormMine ID	Sequence Name	Length (nt)	Chromosome Location
CDS:T23H4.1b	T23H4.1b	1407	I: 9874698-9874729
CDS:T23H4.1a	T23H4.1a	1452	I: 9876528-9876604
CDS:T23H4.1c	T23H4.1c	1374	I: 9876969-9877082

4 RNAi Result

• WBRNAi00053991
• WBRNAi00004296
• WBRNAi00070742
• WBRNAi00070743

52 Allele

• gk962858
• gk962706
• gk963902
• gk963849
• h15688
• h5117
• gk963112
• WBVar01432637
• WBVar01432638
• WBVar01432639
• tm7967
• ttTi36752
• gk119634
• gk119639
• gk119635
• gk119636
• gk119637
• gk119638
• WBVar00538749
• ok681
• ok426
• gk381695
• WBVar00156257
• gk926861
• WBVar00156258
• gk497467
• gk674331
• WBVar00156256
• gk739931
• gk705834

1 Chromosome

• WormBase ID: I
• Organism: Caenorhabditis elegans
• Length (nt): 15072434

1 Chromosome Location

• Feature . Primary Identifier: WBGene00002142
• Start: 9874698
• End: 9879218
• Strand: 1

4 Data Sets

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

0 Downstream Intergenic Region

90 Expression Clusters

Regulated By Treatment	Description	Algorithm	Primary Identifier
	Transcripts of coding genes that showed significantly decreased expression in muscle.	DESeq2 (version 1.24.0). Transcripts with a false-discovery rate adjusted p-value less than 0.05 were considered significantly differentially expressed.	WBPaper00062325:muscle_depleted_coding-RNA
	Genes that showed expression levels higher than the corresponding reference sample (embryonic 24hr reference).	A Mann-Whitney U test with an empirical background model and FDR correction for multiple testing was used to detect expressed transcripts (Benjamini and Hochberg 1995). Genes and TARs with an FDR <= 0.05 were reported as expressed above background. Authors detected differentially expressed transcripts using a method based on linear models. Genes and TARs were called differentially expressed if the FDR was <= 0.05 and the fold change (FC) >= 2.0. To more strictly correct for potential false-positives resulting from multiple sample comparisons, authors divided individual FDR estimates by the number of samplesor sample comparisons, respectively. This resulted in an adjusted FDR of 1.3 * 0.0001 for expression above background and of 7.4 * 0.0001 for differential expression. Authors called genes selectively enriched in a given tissue if they met the following requirements: (1) enriched expression in a given tissue (FDR <= 0.05 and FC >= 2.0), (2) fold change versus reference among the upper 40% of the positive FC range observed for this gene across all tissues, and (3) fold-change entropy among the lower 40% of the distribution observed for all genes.	WBPaper00037950:all-neurons_L1-larva_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
	Transcripts that showed significantly increased expression in csr-1a(tor159) comparing to in N2 at 25C.	DESeq2, fold change > 2, p-value < 0.05.	WBPaper00061753:csr-1(tor159)_upregulated_25C
Bacteria: E.faecalis strain OG1RF	Transcripts that showed significantly increased expression after infection by E. faecalis OG1RF.	Ballgown was used to calculate differential expression of genes using FPKM data and to generate tables with fold change and P values. Genes were shortlisted with a cutoff of 2-fold change and P values of less than 0.05.	WBPaper00059754:E.faecalis_OG1RF_upregulated
Bacteria infection: Enterococcus faecalis	Genes with increased expression after 24 hours of infection by E.faecalis Fold changes shown are pathogen vs OP50.	For RNA-seq and tiling arrays, log2 fold changes between gene expression values of infected versus uninfected nematodes were calculated. For log2 fold changes > 0.00001 the values > 81.25th percentile were defined as up-regulated and for log2 fold changes < -0.00001 the values < 18.75th percentile were defined as down-regulated.	WBPaper00038438:E.faecalis_24hr_upregulated_TilingArray
	Transcripts that showed significantly increased expression after animals were treated with 50uM Rifampicin and 250uM Allantoin from day 1 to day 3 adult hermaphradite.	DESeq2(v1.14.1), fold change > 2, p-value < 0.05	WBPaper00055354:Rifampicin-Allantoin_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
	Transcripts that showed significantly increased expression after animals were treated with 100uM Psora and 250uM Allantoin from day 1 to day 3 adult hermaphradite.	DESeq2(v1.14.1), fold change > 2, p-value < 0.05	WBPaper00055354:Psora-Allantoin_upregulated
	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
	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
	Transcripts that showed significantly increased expression in alg-1(gk214), comparing to in N2.	DESeq2, Fold change > 1.5.	WBPaper00051404:alg-1(gk214)_upregulated
	Transcripts that showed significantly altered expression after 24 hour exposure to stavudine (d4T) starting at L1 lava stage.	DESeq	WBPaper00053302:stavudine_24h_regulated
	Transcripts that showed significantly decreased expression in sin-3(tm1276) comparing to in N2 at early embryo when there were only 3 -5 eggs in the adult.	DESeq2, fold change > 2, adjusted p-value < 0.01	WBPaper00058598:sin-3(tm1276)_downregulated
	Transcripts that showed significantly increased expression in xrep-4(lax137).	DESeq2. Genes were selected if their p value < 0.01.	WBPaper00066062:xrep-4(lax137)_upregulated
	Genes that showed oscillating mRNA expression level throughout the 16 hour time courses from L3 larva to young adult.	The following three lines of R code were used to perform the classification: increasing <-2*amplitude-PC1 < -1.7; oscillating <-!increasing & (amplitude > 0.55); flat <-!increasing & !oscillating; Note that the amplitude of a sinusoidal wave corresponds to only half the fold change between trough and peak.	WBPaper00044736:oscillating_dev_expression
	Genes that showed expression levels higher than the corresponding reference sample (L2 all cell reference).	A Mann-Whitney U test with an empirical background model and FDR correction for multiple testing was used to detect expressed transcripts (Benjamini and Hochberg 1995). Genes and TARs with an FDR <= 0.05 were reported as expressed above background. Authors detected differentially expressed transcripts using a method based on linear models. Genes and TARs were called differentially expressed if the FDR was <= 0.05 and the fold change (FC) >= 2.0. To more strictly correct for potential false-positives resulting from multiple sample comparisons, authors divided individual FDR estimates by the number of samplesor sample comparisons, respectively. This resulted in an adjusted FDR of 1.3 * 0.0001 for expression above background and of 7.4 * 0.0001 for differential expression. Authors called genes selectively enriched in a given tissue if they met the following requirements: (1) enriched expression in a given tissue (FDR <= 0.05 and FC >= 2.0), (2) fold change versus reference among the upper 40% of the positive FC range observed for this gene across all tissues, and (3) fold-change entropy among the lower 40% of the distribution observed for all genes.	WBPaper00037950:excretory-cell_L2-larva_expressed
	Transcripts that showed significantly increased expression in ilc-17.1(syb5296) comparing to in N2 animals at L4 larva stage.	DESeq2, fold change > 2, FDR < 0.05.	WBPaper00066594:ilc-17.1(syb5296)_upregulated
	Transcripts that showed significantly increased expression in hda-2(ok1479) comparing to in N2 animals.	DESeq2 (version 1.28.1), FDR < 0.01, fold change > 2.	WBPaper00062159:hda-2(ok1479)_upregulated
	Transcripts that showed significantly increased expression in srbc-48(ac23);kyIs262;fer-1(b232ts) comparing to in kyIs262;fer-1(b232ts), 24h after infection with P.aeruginosa.	DESeq2, FDR <0.05, fold change > 2.	WBPaper00059664:srbc-48(ac23)_upregulated
	Genes found to be regulated by low-copy overexpression of sir-2.1 with p < 0.014.	N.A.	WBPaper00026929:sir-2.1_overexpression_regulated
	Transcripts that showed significantly increased expression in spr-1(ok2144) comparing to in N2.	DESeq2, fold change > 2, p-value < 0.01.	WBPaper00061203:spr-1(ok2144)_upregulated
	Single-cell RNA-Seq cell group 30_0 expressed in valve.	scVI 0.6.0	WBPaper00065841:30_0
Bacteria infection: Pseudomonas aeruginosa PA14. 24 hours of exposure at 25C.	Transcripts that showed significantly decreased expression in N2 animals with 24 hours of exposure to P. aeruginosa PA14 for 24 hrs at 25C, comparing to N2 animals without exposure to PA14.	DESeq2, fold change > 2, FDR < 0.05.	WBPaper00058948:PA14_downregulated
Temprature shift to 28C for 24 hours.	Transcripts that showed significantly increased expression after animals were exposed to 28C temperature for 24 hours.	Differentially expressed genes wereidentified using DESeq (v.1.18.0) by normalizing readsbased on the negative binomial distribution method andcomparing each HS timepoint to the 0-h control.	WBPaper00061341:28C_24h_upregulated
Temprature shift to 28C for 48 hours.	Transcripts that showed significantly increased expression after animals were exposed to 28C temperature for 48 hours.	Differentially expressed genes wereidentified using DESeq (v.1.18.0) by normalizing readsbased on the negative binomial distribution method andcomparing each HS timepoint to the 0-h control.	WBPaper00061341:28C_48h_upregulated
	Transcripts that showed significantly increased expression in dpy-7(e88) animals comparing to N2 animals.	Authors considered genes differentially expressed if they had a q-value <= 0.05 and a b-value >= 1 or <= -1.	WBPaper00053771:up_at_dpy-7(e88)
	Genes that showed expression levels higher than the corresponding reference sample (embryonic 24hr reference).	A Mann-Whitney U test with an empirical background model and FDR correction for multiple testing was used to detect expressed transcripts (Benjamini and Hochberg 1995). Genes and TARs with an FDR <= 0.05 were reported as expressed above background. Authors detected differentially expressed transcripts using a method based on linear models. Genes and TARs were called differentially expressed if the FDR was <= 0.05 and the fold change (FC) >= 2.0. To more strictly correct for potential false-positives resulting from multiple sample comparisons, authors divided individual FDR estimates by the number of samplesor sample comparisons, respectively. This resulted in an adjusted FDR of 1.3 * 0.0001 for expression above background and of 7.4 * 0.0001 for differential expression. Authors called genes selectively enriched in a given tissue if they met the following requirements: (1) enriched expression in a given tissue (FDR <= 0.05 and FC >= 2.0), (2) fold change versus reference among the upper 40% of the positive FC range observed for this gene across all tissues, and (3) fold-change entropy among the lower 40% of the distribution observed for all genes.	WBPaper00037950:AVA-neuron_L1-larva_expressed

6 Expression Patterns

• Primary Identifier: Expr1031257
• Pattern: Tiling arrays expression graphs

• Primary Identifier: Expr8688
• Remark: Picture: N.A.
• Pattern: Expression in the alimentary canal: Strong and consistent expression in pm1, pm2, pm8, vir. Weak or rare expression in pharyngeal epithelium. inx-20 appears in pm1, pm2, pm8, and intestinal rectal valve at threefold stage and continues to adulthood.

• Primary Identifier: Expr1023748
• Pattern: Developmental gene expression time-course. Raw data can be downloaded from ftp://caltech.wormbase.org/pub/wormbase/datasets-published/levin2012

• Primary Identifier: Expr2012795
• 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: Expr1157536
• Pattern: Developmental gene expression time-course. Raw data can be downloaded from ftp://caltech.wormbase.org/pub/wormbase/datasets-published/hashimshony2015

• Primary Identifier: Expr2031034
• 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).

10 GO Annotation

8 Homologues

1 Locations

• Feature . Primary Identifier: WBGene00002142
• Start: 9874698
• End: 9879218
• Strand: 1

10 Ontology Annotations

0 Regulates Expr Cluster

1 Sequence

• Length: 4521

1 Sequence Ontology Term