WormMine: Gene WBGene00003732

• WormBase Gene ID: WBGene00003732
• Gene Name: nhx-4
• Sequence Name: F14B8.1
• Brief Description: nhx-4 encodes two isoforms of a sodium/proton exchanger expressed in the plasma membrane of nearly all cells and cell types; in polarized epithelial cells, NHX-4::GFP appears specifically located in the basolateral membrane, like human SLC9A1 ('NHE1'; OMIM:107310); nhx-4 has no reported mutant or RNAi phenotype, but, given its ubiquitous expression, may represent a housekeeping exchanger generally required for cellular viability; transgenic NHX-4A, when expressed in cell culture, mediates Na[+]-dependent pH recovery after intracellular acidification, independently of extracellular Cl[-].
• Organism: Caenorhabditis elegans
• Automated Description: Predicted to enable potassium:proton antiporter activity and sodium:proton antiporter activity. Predicted to be involved in potassium ion transmembrane transport; regulation of intracellular pH; and sodium ion import across plasma membrane. Predicted to be located in plasma membrane. Expressed widely.
• Biotype: SO:0001217
• Genetic Position: X :-2.00918 ±0.028616
• Length (nt): 6848

1 Organism

• Name: Caenorhabditis elegans
• Taxon Id: 6239

1 Synonyms

• Value: WBGene00003732

Genomics

2 Transcripts

WormMine ID	Sequence Name	Length (nt)	Chromosome Location
Transcript:F14B8.1a.1	F14B8.1a.1	2966	X: 6914289-6921135
Transcript:F14B8.1b.1	F14B8.1b.1	2687	X: 6917328-6921136

Other

2 CDSs

WormMine ID	Sequence Name	Length (nt)	Chromosome Location
CDS:F14B8.1a	F14B8.1a	2250	X: 6914375-6914378
CDS:F14B8.1b	F14B8.1b	2055	X: 6917329-6917482

4 RNAi Result

• WBRNAi00030927
• WBRNAi00044576
• WBRNAi00086174
• WBRNAi00086171

192 Allele

• gk964260
• WBVar01927073
• WBVar01927074
• WBVar01927075
• WBVar01927076
• gk962713
• WBVar01882389
• WBVar01882390
• WBVar01882391
• WBVar02116460
• WBVar01882388
• gk800351
• gk668636
• WBVar02064513
• WBVar02064514
• WBVar02064512
• WBVar02064517
• WBVar02064518
• WBVar02064515
• WBVar02064516
• WBVar02064519
• WBVar02064520
• WBVar02064521
• WBVar02064524
• WBVar02064525
• WBVar02064522
• WBVar02064523
• gk830559
• gk847408
• gk549464

1 Chromosome

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

1 Chromosome Location

• Feature . Primary Identifier: WBGene00003732
• Start: 6914289
• End: 6921136
• 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_6921137..6921645
• Length (nt): 509
• Chromosome Location: X: 6921137-6921645
• Organism: Caenorhabditis elegans

103 Expression Clusters

Regulated By Treatment	Description	Algorithm	Primary Identifier
	Transcripts that showed significantly increased expression in L1 neural cells comparing to in adult neural cells.	DESeq2 (v1.18.1) fold change > 2, P-adj<0.05, using BenjaminiHochberg correction.	WBPaper00060811:L1_vs_adult_upregulated_neural
	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
	Neuronally enriched transcripts according to a comparison of neuronal nuclei IP samples to total nuclei using isolation of nuclei from tagged specific cell types (INTACT) technology.	DESEQ2, fold change > 2 and FDR < 0.01.	WBPaper00062103:neuron_enriched
	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
	Transcripts that showed significantly higher expression in somatic gonad precursor cells (SGP) vs. head mesodermal cells (hmc).	DESeq2, fold change >= 2, FDR <= 0.01.	WBPaper00056826:SGP_biased
	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 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 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 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 depleted in purified oocyte P bodies comparing to in the whole animal.	DESeq2, FDR < 0.05, fold change > 2.	WBPaper00065975:P-body_vs_WholeAnimal_depleted
	Transcripts that showed significantly increased expression in animals with germline-specific inx-14(RNAi) comparing to in aniamls fed with control vector, both exposed to PA14 infection.	DESeq2. Differentially-expressed genes (DEG) were identified based on two criteria: FDR (False discovery rateusing Benjamini-Hochberg adjusted p-values) < 0.01 and absolute value of log2(Fold Change) > 1.	WBPaper00066146:germline-inx-14(RNAi)_upregulated_PA14
	Proteins that showed significantly decreased expression in 1-day-old sek-1(km4) adults comparing to in wild type animals, both with 6 hours of cisplatin treatment.	The differential expression analysis was performed in R. Differentially expressed proteins were identified by using a two-sided t-test on log-transformed data.	WBPaper00065373:sek-1(km4)_downregulated_cisplatin
	Transcripts that showed significantly increased expression in daf-2(e1370) comparing to in N2.	Differential gene expression analysis was performed using the quasi-likeli-hood framework in edgeR package v. 3.20.1 in R v. 3.4.1.	WBPaper00053810:daf-2(e1370)_upregulated
	Transcripts that showed significantly increased expression in hda-1(ne4752[3xFLAG-Degron-HDA-1]) in gonads dissected from 1-day old adult animals.	Salmon was used to map the mRNA-seq reads with the worm database WS268, and its output files were imported to DESeq2 in R. The differentially expressed genes were filtered by fold change more than 2 and adjusted p-value < 0.05. The scatter plots were generated by the plot function in R.	WBPaper00061479:hda-1(ne4752)_upregulated
	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:GABAergic-motor-neurons_L2-larva_expressed
	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 npr-15(tm12539) comparing to in N2 at L4 larva stage.	Fold change > 2, FDR < 0.05.	WBPaper00066608:npr-15(tm12539)_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
	Transcripts that showed significantly decreased expression in eat-2(ad1116) comparing to in N2 at 3-days post L4 adult hermaphrodite animals.	DESeq2(v1.14.1), fold change > 2, p-value < 0.05	WBPaper00055354:eat-2(ad1116)_downregulated
	Transcripts that showed significantly decreased 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_downregulated
	Transcripts that showed significantly decreased expression after animals were treated with 100uM Rapamycin and 250uM Allantoin from day 1 to day 3 adult hermaphradite.	DESeq2(v1.14.1), fold change > 2, p-value < 0.05	WBPaper00055354:Rapamycin-Allantoin_downregulated
	Transcripts that showed significantly increased expression in hda-1(RNAi) embryos comparing to control animals.	DESeq2, fold change > 2, FDR < 0.05.	WBPaper00067044:hda-1(RNAi)_upregulated
	Transcripts detected in germline isolated from day-1 adult hermaphrodite animals.	All three experiments have CPM >= 1.	WBPaper00067147:germline_expressed

6 Expression Patterns

• Primary Identifier: Expr1031743
• Pattern: Tiling arrays expression graphs

• Primary Identifier: Expr1021689
• Pattern: Developmental gene expression time-course. Raw data can be downloaded from ftp://caltech.wormbase.org/pub/wormbase/datasets-published/levin2012

• Primary Identifier: Expr2244
• Pattern: In general, the expression patterns found for the translational fusion constructs were similar to those reported above for the transcriptional fusions. Expression of NHX-4::GFP was observed in nearly all cells and cell types. Labeling was observed at the nerve ring and retrovesicular ganglia, as well as weak intestinal fluorescence, and signal in the hypodermal cells, in particular those associated with the intestinal tract and rectum.
• Subcellular Localization: NHX-4::GFP was targeted to the plasma membrane. NHX-4::GFP can clearly be seen to partition in a distinct pattern at the cell membrane of body wall muscle with the twisting characteristic of the rol-6 phenotype. This pattern appears to indicate some specific targeting of NHX-4::GFP to a microdomain in the membrane, perhaps where contact with other cells takes place. However, in most cells, the NHX-4::GFP protein is distributed evenly throughout the membrane, with the cell bodies of neurons clearly outlined, and fluorescence extending through the neuronal processes. When expressed in polarized epithelial cells, NHX-4::GFP appears to be targeted to the basolateral membrane.

• Primary Identifier: Expr1148533
• Pattern: Developmental gene expression time-course. Raw data can be downloaded from ftp://caltech.wormbase.org/pub/wormbase/datasets-published/hashimshony2015

• Primary Identifier: Expr2014256
• 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: Expr2032496
• 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).

17 GO Annotation

1 Homologues

1 Locations

• Feature . Primary Identifier: WBGene00003732
• Start: 6914289
• End: 6921136
• Strand: 1

17 Ontology Annotations

0 Regulates Expr Cluster

1 Sequence

• Length: 6848

1 Sequence Ontology Term

• Name: gene

1 Strains

• WBStrain00031554

1 Upstream Intergenic Region

• WormBase ID: intergenic_region_chrX_6906000..6914288
• Length (nt): 8289
• Chromosome Location: X: 6906000-6914288
• Organism: Caenorhabditis elegans