WormMine: Gene WBGene00018330

• WormBase Gene ID: WBGene00018330
• Gene Name: elks-1
• Sequence Name: F42A6.9
• Brief Description: elks-1 encodes the C. elegans homolog of the vertebrate ELKS (glutamine, leucine, lysine, and serine-rich) proteins; although loss of elks-1 activity results in no obvious developmental or behavioral abnormalities, the ELKS-1 C-terminus interacts with the PDZ domain of UNC-10/RIM in vitro, and in vivo each protein appears to play a nonessential role in localizing the other to the presynaptic active zone; in addition to the active zone, ELKS-1 also localizes to the pharyngeal basal lamina.
• Organism: Caenorhabditis elegans
• Automated Description: Enables PDZ domain binding activity. Involved in protein localization and regulation of protein deneddylation. Located in basement membrane and presynaptic active zone. Expressed in nervous system. Is an ortholog of human ERC2 (ELKS/RAB6-interacting/CAST family member 2).
• Biotype: SO:0001217
• Genetic Position: IV :-4.60667 ±0.02445
• Length (nt): 7513

1 Organism

• Name: Caenorhabditis elegans
• Taxon Id: 6239

1 Synonyms

• Value: WBGene00018330

Genomics

1 Transcripts

WormMine ID	Sequence Name	Length (nt)	Chromosome Location
Transcript:F42A6.9.1	F42A6.9.1	2862	IV: 3342515-3350027

Other

1 CDSs

WormMine ID	Sequence Name	Length (nt)	Chromosome Location
CDS:F42A6.9	F42A6.9	2511	IV: 3342757-3342928

4 RNAi Result

• WBRNAi00002391
• WBRNAi00047069
• WBRNAi00014804
• WBRNAi00033487

144 Allele

• gk963722
• gk963907
• tm10695
• WBVar02020364
• WBVar02020363
• WBVar02020362
• WBVar02020361
• WBVar00187091
• WBVar00187090
• WBVar00187094
• WBVar00187093
• WBVar00187092
• WBVar01821234
• WBVar01821235
• gk462860
• gk364919
• gk358711
• gk832867
• gk872532
• gk719101
• gk863967
• gk765814
• gk665031
• gk867387
• gk733723
• gk904160
• gk765331
• gk935132
• gk443615
• gk330199

1 Chromosome

• WormBase ID: IV
• Organism: Caenorhabditis elegans
• Length (nt): 17493829

1 Chromosome Location

• Feature . Primary Identifier: WBGene00018330
• Start: 3342515
• End: 3350027
• 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_chrIV_3341976..3342514
• Length (nt): 539
• Chromosome Location: IV: 3341976-3342514
• Organism: Caenorhabditis elegans

126 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 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 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
	Transcripts expressed in neuronal cells, by analyzingfluorescence-activated cell sorted (FACS) neurons.	DESeq. False discovry rate (FDR) < 0.1.	WBPaper00048988:neuron_expressed
	Genes significantly enriched (> 2x, FDR < 5%) in a particular cell-type versus a reference sample of all cells at the same stage.	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:A-class-motor-neurons_larva_enriched
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
	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 higher expression in somatic gonad precursor cells (SGP) vs. head mesodermal cells (hmc).	DESeq2, fold change >= 2, FDR <= 0.01.	WBPaper00056826:SGP_biased
	Proteins interacting with NHR-49-GFP according to co-IP and LC-MS.	N.A.	WBPaper00064071:NHR-49_interacting
	Transcripts expressed in body muscle, according to PAT-Seq analysis using Pmyo-3-GFP-3XFLAG mRNA tagging.	Cufflinks FPKM value >=1.	WBPaper00050990:body-muscle_expressed
	Transcripts expressed in hypodermis, according to PAT-Seq analysis using Pdpy-7-GFP-3XFLAG mRNA tagging.	Cufflinks FPKM value >=1.	WBPaper00050990:hypodermis_expressed
	Transcripts expressed in NMDA neuron, according to PAT-Seq analysis using Pnmr-1-GFP-3XFLAG mRNA tagging.	Cufflinks FPKM value >=1.	WBPaper00050990:NMDA-neuron_expressed
	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
	Maternal class (M): genes that are called present in at least one of the three PC6 replicates.	A modified Welch F statistic was used for ANOVA. For each gene, regressed error estimates were substituted for observed error estimates. The substitution is justified by the lack of consistency among the most and least variable genes at each time point. Regressed error estimates were abundance-dependent pooled error estimates that represented a median error estimate from a window of genes of similar abundance to the gene of interest. A randomization test was used to compute the probability Pg of the observed F statistic for gene g under the null hypothesis that developmental time had no effect on expression. P-values were not corrected for multiple testing.	[cgc5767]:expression_class_M
	Transcripts that showed significantly increased expression in mrg-1(qa6200) comparing to in control animals in primordial germ cells (PGCs) at L1 larva stage.	DESeq2(v1.32.0), FDR < 0.05.	WBPaper00064315:mrg-1(qa6200)_upregulated_PGCs
	Strictly maternal class (SM): genes that are the subset of maternal genes that are not also classified as embryonic.	A modified Welch F statistic was used for ANOVA. For each gene, regressed error estimates were substituted for observed error estimates. The substitution is justified by the lack of consistency among the most and least variable genes at each time point. Regressed error estimates were abundance-dependent pooled error estimates that represented a median error estimate from a window of genes of similar abundance to the gene of interest. A randomization test was used to compute the probability Pg of the observed F statistic for gene g under the null hypothesis that developmental time had no effect on expression. P-values were not corrected for multiple testing.	[cgc5767]:expression_class_SM
	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
Gamma irradiation 100 mGY per hour for 72 hours since L1 larva.	Transcripts that showed significantly increased expression after exposure to 100mGy per hour gamma irradiation from L1 to day 1 adult hermaphrodite stage.	DESeq2, FDR <= 0.05, log2 fold change >= 0.3 or <= -0.3.	WBPaper00058958:100mGy-irradiation-72h_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 (L3/L4 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:dopaminergic-neurons_L3-L4-larva_expressed
	Genes that showed expression levels higher than the corresponding reference sample (L3/L4 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:hypodermis_L3-L4-larva_expressed
	Transcripts that showed altered expression in cat-1(RNAi) animals comparing to control animals injected with empty vector.	p-value <= 0.05	WBPaper00066902:cat-1(RNAi)_regulated
	Transcripts detected in germline isolated from day-1 adult hermaphrodite animals.	All three experiments have CPM >= 1.	WBPaper00067147:germline_expressed
	Transcripts that showed significantly decreased expression in pfd-6(gk493446); daf-2(e1370) comparing to in daf-2(e1370).	Limma version 3.24.15. Fold change < 0.67 (p < 0.05).	WBPaper00055827:pfd-6(gk493446)_downregulated
	Proteins identified in extracellular vesicle.	N.A.	WBPaper00062669:extracellular-vesicle_protein
	Transcripts that showed significantly increased expression in animals lacking P granules by RNAi experiments targeting pgl-1, pgl-3, glh-1 and glh-4, and unc-119-GFP(+), comparing to in control animals, at 2-day post L4 adult hermaphrodite stage.	DESeq2, Benjamini-Hochberg multiple hypothesis corrected p-value < 0.05 and fold change > 2.	WBPaper00050859:upregulated_P-granule(-)GFP(+)_vs_control_day2-adult
	Transcripts that showed significantly increased expression in animals lacking P granules by RNAi experiments targeting pgl-1, pgl-3, glh-1 and glh-4, and unc-119-GFP(-), comparing to in control animals, at 2-day post L4 adult hermaphrodite stage.	DESeq2, Benjamini-Hochberg multiple hypothesis corrected p-value < 0.05 and fold change > 2.	WBPaper00050859:upregulated_P-granule(-)GFP(-)_vs_control_day2-adult
	Transcripts that showed significantly increased expression in pgl-1(ct131) animals (isolated from SS0002[pgl-1(ct131)him-3(e1147)], comparing to in control animals SS1174, at 1-day post L4 adult hermaphrodite stage.	DESeq2, Benjamini-Hochberg multiple hypothesis corrected p-value < 0.05 and fold change > 2.	WBPaper00050859:upregulated_pgl-1(ct131)_vs_control_day1-adult
	Genes significantly enriched in NSM neurons (isolated by FACS) versus the reference, according to tiling array analysis towards total RNA.	A linear model and moderated t-statistic were used to determine differentially expressed genes as implemented by the limma package (v3.21.4). Enriched list contains only genes significantly enriched in the NSM neurons versus the reference <=1.5X and <= 5% FDR.	WBPaper00045974:NSM_enriched_totalRNA_tiling

8 Expression Patterns

• Primary Identifier: Expr4968
• Remark: Picture: Fig 1 and Fig S1.
• Subcellular Localization: Staining pattern within the synaptic region was nonidentical to but highly correlated with that of RAB-3.

• Primary Identifier: Expr4960
• Remark: Picture: Fig 1.
• Subcellular Localization: Discrete localization to the presynaptic region of HSNL near the vulva.

• Primary Identifier: Expr1150933
• Pattern: Developmental gene expression time-course. Raw data can be downloaded from ftp://caltech.wormbase.org/pub/wormbase/datasets-published/hashimshony2015

• Primary Identifier: Expr12357
• Pattern: RIM and ELKS are strongly colocalized throughout the C. elegans nervous system.

• Primary Identifier: Expr2011275
• 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: Expr1037894
• Pattern: Tiling arrays expression graphs

• Primary Identifier: Expr2029511
• 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: Expr1015636
• Pattern: Developmental gene expression time-course. Raw data can be downloaded from ftp://caltech.wormbase.org/pub/wormbase/datasets-published/levin2012

12 GO Annotation

7 Homologues

1 Locations

• Feature . Primary Identifier: WBGene00018330
• Start: 3342515
• End: 3350027
• Strand: -1

12 Ontology Annotations

1 Regulates Expr Cluster

Regulated By Treatment	Description	Algorithm	Primary Identifier
	Proteins interacting with ELKS-1 according to TurboID-based enzymatic protein labeling and extraction of biotinylated proteins.	N.A.	WBPaper00061818:ELKS-1_interacting

1 Sequence

• Length: 7513

1 Sequence Ontology Term

• Name: gene

4 Strains

• WBStrain00029066
• WBStrain00029068
• WBStrain00037303
• WBStrain00052562

1 Upstream Intergenic Region

• WormBase ID: intergenic_region_chrIV_3350028..3355056
• Length (nt): 5029
• Chromosome Location: IV: 3350028-3355056
• Organism: Caenorhabditis elegans