WormMine: Gene WBGene00020712

• WormBase Gene ID: WBGene00020712
• Gene Name: ckr-1
• Sequence Name: T23B3.4
• Brief Description: T23B3.4 encodes a seven transmembrane receptor that is most closely related to the mammalian cholecystokinin receptors; loss of T23B3.4 activity via RNAi, either singly or in combination with another cholecystokinin receptor-encoding gene, Y39A3B.5, has no effect on fat metabolism, however large-scale RNAi screens have reported that T23B3.4(RNAi) results in embryonic lethality and reduced brood sizes; a T23B3.4::GFP reporter is expressed in a subset of nerve ring neurons.
• Organism: Caenorhabditis elegans
• Automated Description: Predicted to enable neuropeptide receptor activity. Involved in determination of adult lifespan. Predicted to be located in plasma membrane. Expressed in intestine; nerve ring; and neurons. Human ortholog(s) of this gene implicated in cholelithiasis; obesity; and pancreatic ductal carcinoma. Is an ortholog of human CCKAR (cholecystokinin A receptor).
• Biotype: SO:0001217
• Genetic Position: I :1.28924 ±0.002293
• Length (nt): 4323

1 Organism

• Name: Caenorhabditis elegans
• Taxon Id: 6239

1 Synonyms

• Value: WBGene00020712

Genomics

1 Transcripts

WormMine ID	Sequence Name	Length (nt)	Chromosome Location
Transcript:T23B3.4.1	T23B3.4.1	1422	I: 6687349-6691671

Other

1 CDSs

WormMine ID	Sequence Name	Length (nt)	Chromosome Location
CDS:T23B3.4	T23B3.4	1266	I: 6687496-6687600

15 RNAi Result

• WBRNAi00066040
• WBRNAi00066485
• WBRNAi00066484
• WBRNAi00066489
• WBRNAi00066488
• WBRNAi00053895
• WBRNAi00072228
• WBRNAi00004276
• WBRNAi00035843
• WBRNAi00081999
• WBRNAi00082001
• WBRNAi00082000
• WBRNAi00082002
• WBRNAi00095028
• WBRNAi00095019

46 Allele

• gk962858
• gk962706
• gk963902
• WBVar00240821
• WBVar01431948
• WBVar01431947
• WBVar01694818
• tm11124
• gk647427
• gk699884
• gk713529
• gk787044
• gk644065
• gk510050
• gk755839
• gk437824
• gk706366
• gk706365
• gk879473
• gk671567
• gk432998
• gk415907
• gk671566
• gk900320
• gk789483
• gk600380
• gk787043
• gk754767
• gk735116
• gk445783

1 Chromosome

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

1 Chromosome Location

• Feature . Primary Identifier: WBGene00020712
• Start: 6687349
• End: 6691671
• 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_chrI_6686777..6687348
• Length (nt): 572
• Chromosome Location: I: 6686777-6687348
• Organism: Caenorhabditis elegans

102 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 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
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
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
	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
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 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
	Transcripts that showed significantly increased expression in adr-1(tm668) and adr-1(gv6) comparing to in N2 at embryo stage.	DESeq FDR <= 0.05	WBPaper00056617:adr-1_upregulated_embryo_transcript
	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:A-class-motor-neurons_L2-larva_expressed
	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:all-neurons_L2-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:dopaminergic-neurons_L3-L4-larva_expressed
	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 altered expression at URX, AQR, and PQR neurons in camt-1(ok515) animals comparing to in wild type AX1888-1 strain.	RNA-seq data were mapped using PRAGUI - a Python 3-based pipeline for RNA-seq data analysis.	WBPaper00061902:camt-1(ok515)_regulated_URX-AQR-PQR
	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:glr-1(+)-neurons_L2-larva_expressed
	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:intestine_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 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 50mM Metformin from day 1 to day 3 adult hermaphradite.	DESeq2(v1.14.1), fold change > 2, p-value < 0.05	WBPaper00055354:Rapamycin-Metformin_downregulated
	Transcripts that showed significantly decreased expression after animals were treated with 100uM Rapamycin and 50uM Rifampicin from day 1 to day 3 adult hermaphradite.	DESeq2(v1.14.1), fold change > 2, p-value < 0.05	WBPaper00055354:Rapamycin-Rifampicin_downregulated
	Transcripts that showed significantly decreased 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_downregulated
	Transcripts that showed significantly decreased expression in set-2(tm1630) animals at embryo stage, comparing to in N2 animals.	DESeq2 (v2.1.8.3) was used to determine DE genes and to generate principal component and scatter plots. DE genes with FDR < 0.05 were analysed using g:Profiler with Bonferroni correction.	WBPaper00060014:set-2(tm1630)_downregulated
	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
	Transcripts that showed significantly altered expression after 24 hour exposure to nitroguanidine (NQ).	Multivariate permutation tests with random variance model implemented in BRB-Array Tools version 4.5 were performed to infer differentially expressed genes (DEGs). One thousand random permutations were computed per chemical class (i.e., a group of 16 arrays or samples). The confidence level of false discovery rate assessment was set at 80%, and the maximum allowed portion of false-positive genes was 10%.	WBPaper00055899:nitroguanidine_regulated
	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_downregulated
	Transcripts that showed significantly increased expression in sma-2(rax5) comparing to in N2 at 1-day post-L4 adult hermaphrodite	HTseq-count was used to count reads mapped to each gene and counting data was imported to EdgeR for statistical analysis. Statistical significance was defined by adjusted P value (false discovery rate, FDR) of <0.05.	WBPaper00053184:sma-2(rax5)_upregulated
	Transcripts that showed significantly increased expression in sma-4(rax3) comparing to in N2 at 1-day post-L4 adult hermaphrodite	HTseq-count was used to count reads mapped to each gene and counting data was imported to EdgeR for statistical analysis. Statistical significance was defined by adjusted P value (false discovery rate, FDR) of <0.05.	WBPaper00053184:sma-4(rax3)_upregulated
	Top 300 transcripts enriched in ABalppppapa, ABpraaapapa according to single cell RNAseq.	Top 300 enriched transcripts were determined by log2.ratio of the tpm in the cell type vs the tpm in the other cells * the log2 of the cell.type tpm.	WBPaper00061340:OLL_parent
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

7 Expression Patterns

• Primary Identifier: Expr4995
• Remark: Picture: Fig 1C. Reporter gene fusion type not specified.
• Pattern: The CKR-1::GFP transgenics showed GFP expression in several nerve ring neurons.

• Primary Identifier: Expr16053
• Pattern: A functional transcriptional reporter for CKR-1 revealed strong expression in many neurons and weak expression in the intestine. In the nervous system, ckr-1 expresses in the head and ventral cord neurons. CKR-1-expressing neurons include head motor neurons SMD and RME , interneurons AIB and RIM, peptidergic neurons RIS, and body motor neurons A, B, and D.

• Primary Identifier: Expr16009
• Pattern: We found that ckr-1 is broadly expressed in the nervous system, showing expression in a subset of ventral nerve cord motor neurons, amphid and phasmid sensory neurons, premotor interneurons, and motor neurons in the nerve ring. We identified many of these neurons, largely from analysis of ckr-1 co-expression with previously characterized reporters. In the ventral nerve cord, we found that ckr-1 is expressed in cholinergic, but not GABAergic, ventral cord motor neurons. Amongst head neurons, the ckr-1 reporter is expressed in GABAergic RMEV, RMED, AVL and RIS neurons, cholinergic SMDV, SMDD, and RIV head motor neurons, the interneuron RIG, the serotonergic NSM neuron, and in the interneurons AIA and AIB. Additional studies using DiI uptake indicated that ckr-1 is also expressed in the amphid sensory neurons ASK and ASI and the phasmid sensory neurons PHA and PHB. With the exception of the ventral cord cholinergic neurons, the ckr-1 reporter almost exclusively labeled neurons that do not receive direct synaptic input from DVA, suggesting that NLP-12 acts at least partially through extrasynaptic mechanisms.

• Primary Identifier: Expr2010034
• 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: Expr2028275
• 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: Expr1023812
• Pattern: Developmental gene expression time-course. Raw data can be downloaded from ftp://caltech.wormbase.org/pub/wormbase/datasets-published/levin2012

• Primary Identifier: Expr1157440
• Pattern: Developmental gene expression time-course. Raw data can be downloaded from ftp://caltech.wormbase.org/pub/wormbase/datasets-published/hashimshony2015

11 GO Annotation

2 Homologues

1 Locations

• Feature . Primary Identifier: WBGene00020712
• Start: 6687349
• End: 6691671
• Strand: -1

11 Ontology Annotations

0 Regulates Expr Cluster

1 Sequence

• Length: 4323

1 Sequence Ontology Term

• Name: gene

1 Strains

• WBStrain00032608

1 Upstream Intergenic Region

• WormBase ID: intergenic_region_chrI_6691672..6695367
• Length (nt): 3696
• Chromosome Location: I: 6691672-6695367
• Organism: Caenorhabditis elegans