WormMine: AnatomyTerm WBbt:0003824

• Definition: Neuron, ciliated ending in head, no supporting cells, associated with ILso
• Name: BAGL
• Primary Identifier: WBbt:0003824
• Synonym: lineage name: ABalppappap

1 Children

Definition	Name	Synonym	Primary Identifier
nucleus of pedigree ABalppappap	ABalppappap nucleus		WBbt:0001761

2 Expression Clusters

Regulated By Treatment	Description	Algorithm	Primary Identifier
	Single-cell RNA-Seq cell group 85_0 expressed in neuron.	scVI 0.6.0	WBPaper00065841:85_0
	Top 300 transcripts enriched in BAGL, BAGR 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:BAG

112 Expression Patterns

• Primary Identifier: Expr4859
• Pattern: A-class motor neuron: enriched in embryo (8.7) and larva (7.9). Neuronal expression include: I5, ASE, ASG, BAG, DD, M3, M5, head neurons. Pan-neuronal: expressed in embryo; enriched in larva (7.1).

• Primary Identifier: Expr4693
• Remark: nsy-5 = T16H5.1.
• Pattern: A GFP reporter transgene with 5.8 kb of the nsy-5 promoter was expressed exclusively in sensory neurons and interneurons in the head and tail. The neurons that expressed nsy-5::GFP included AWC, ASH, AFD, ASI, ADL, ASK, BAG, AWB, and ADF (head sensory neurons); ADA, AIZ, RIC, AIY, and AIM (head interneurons); PHA and PHB (tail sensory neurons); and PVC and PVQ (tail interneurons). Expression began about halfway through embryogenesis, was strongest in late embryogenesis and the L1 larval stage, and faded thereafter. Adults maintained weak expression in several neurons, including ASH but not AWC.

• Primary Identifier: Expr16432
• Pattern: We detected DMD-9::GFP expression in 10 head neurons of hermaphrodites at the L4 stage. High dmd-9 expression was detected in the BAG, AFD, AWCon, AWCoff, ASEL, and AWB neurons, with lower expression in ASER, and the ASGs. We also observed weak and inconsistent expression in other head neurons and transient weak expression in the tail of hermaphrodites and males at the L4 stage. No overt differences were observed in DMD-9::GFP expression in neurons of hermaphrodites and males. We also detected DMD-9::GFP expression in non-neuronal tissues. Transient DMD-9::GFP expression was observed in the uterine cells at specific sub-stages of the L4 stage. DMD-9 is not expressed from L4.0 to L4.3, with expression first detected in the early L4.4 stage, with the highest level during L4.4. before gradual loss by the L4.9 stage (Mok et al. 2015). DMD-9::GFP was not detected in adult uterine cells. We also detected DMD-9::GFP expression in sperm of hermaphrodites and males. In addition, we found that in a small proportion of L4 animals DMD-9::GFP shows asymmetric expression in the ASEs and AWCs neurons.

• Primary Identifier: Expr3175
• Pattern: Expressed in ADF, ADL, AFD, ASE, ASG, ASH, ASI, ASJ, ASK, AWA, AWB, AWC, BAG, PHA, PHB, URX, intestine.

• Primary Identifier: Expr8247
• Remark: Picture: Figure 5D.
• Pattern: Pmgl-3::gfp was expressed in NSM, ADF, ASE, and AWC amphid sensory neurons, and the RIB and RIC interneurons. Occasional expression in BAG-ciliated neurons was also noted.

• Primary Identifier: Expr15388

• Primary Identifier: Expr15558

• Primary Identifier: Expr15560

• Primary Identifier: Expr1688
• Remark: The cellular expression pattern for nlp-3 fragments was indistinguishable from the cellular expression pattern for nlp-3 subcloned constructs. Transgenic lines were generated by coinjection of the nlp::gfp construct (5070 ng/ul) and lin-15 rescue construct (pJM24,100 ng/ul) into lin-15(n765ts) animals. At least two independent transgenic lines were analyzed for each nlp gene; 5-10 animals were scored per line. 1,1'-Dioctadecyl-3,3,3',3 -tetramethylindodicarbocyanine perchlorate (Molecular Probes) was used to stain amphid and phasmid neurons to facilitate identification.
• Pattern: Expressed in ADF, ASE, ASH, AWB, ASJ, BAG, HSN, I1, I2, I3, I4, MI, M3, NSMR, 3 head neurons, VNC, oocytes, I6, M2, pm1VL, intestine.

• Primary Identifier: Expr15571

• Primary Identifier: Expr15572

• Primary Identifier: Expr15573

• Primary Identifier: Expr15579

• Primary Identifier: Expr15586

• Primary Identifier: Expr15651

• Primary Identifier: Expr15652

• Primary Identifier: Expr15589

• Primary Identifier: Expr15591

• Primary Identifier: Expr15598

• Primary Identifier: Expr15604

• Primary Identifier: Expr15608

• Primary Identifier: Expr11375
• Pattern: eat-4 is expressed in 78 of the 302 neurons of the adult hermaphrodite, which fall into 38 neuron classes (out of a total of 118 anatomically defined neuron classes in the hermaphrodite). Most of these neurons are either sensory- or interneurons. Only two motorneurons utilize glutamate; both are located in the pharynx.

• Primary Identifier: Expr15611

• Primary Identifier: Expr1500
• Pattern: Both: The transgene constructs showed minimal expression in non-neuronal cells. However, transgene expression in intestinal, hypodermal, or muscle cells was observed in occasional transgenic lines in which 3.0-kb genomic DNA fragments extending just past the CePPEF start codon directed production of short N-terminal regions of CePPEF fused to GFP. As these expression patterns occurred sporadically, they likely reflect transgene effects rather than an expression pattern relevant to the endogenous CePPEF gene. FL-GFP: FL-GFP transgene directed GFP expression to the same set of neurons as the NLS-GFP-LacZ construct, and expression in a single posterior neuron was also more clearly observed. Within the expressing cells, the FL-GFP fusion protein localized efficiently to several structures beyond the cell soma, including axons that form the ventral nerve cord; dendrites that extend to the anterior tip of the animal; and the cilia of neurons AWB, AWC, and BAG. aa-(1)-NLS-GFP-LacZ: Injection of the aa-(1)-NLS-GFP-LacZ construct into C. elegans revealed reporter gene expression in several anterior neurons, including AWB, AWC, AVA, AVB, AVX, BAG, and URX. The ASE neuron showed inconsistent transgene expression.
• Subcellular Localization: FL-GFP: Within the expressing cells, the FL-GFP fusion protein localized efficiently to several structures beyond the cell soma, including axons that form the ventral nerve cord; dendrites that extend to the anterior tip of the animal; and the cilia of neurons AWB, AWC, and BAG. aa-(1)-NLS-GFP-LacZ: GFP-LacZ fusion protein facilitates retention in the nucleus.

• Primary Identifier: Expr11016
• Pattern: Expression is first detected in 4 neuronal cells at around 350 min post-fertilization, which is the time at which the BAG and URX neurons are born. Expression is restricted to these 4 neurons during embryogenesis. At the first larval stage, egl-13 expression is observed in the BAG and URX neurons plus occasionally in a small number of unidentified cells in the head and tail (including the AQR and PQR neurons). Later during larval development, egl-13 expression is observed in body wall muscle and vulval cells (data not shown). Neuronal expression is restricted to the O2 and CO2-sensing neurons in the adult.

• Primary Identifier: Expr15420

• Primary Identifier: Expr1169
• Pattern: ASG and BAG sensory neurons; RIG interneurons; PVC, PVR, PVQ interneurons; additional neurons.

• Primary Identifier: Expr15855
• Pattern: We identified expression of lgc-56 in BAG and ASH as well as a number of yet-unidentified neurons.

• Primary Identifier: Expr8589
• Remark: Picture: Figure 2C.
• Pattern: In first larval stage (L1) animals, GFP was expressed prominently in the URX and BAG sensory neurons, with weaker and inconsistent expression in the ASG and ADF sensory neurons, the pharynx, and a few intestinal cells. In older animals, GFP fluorescence was also observed in AQR and PQR sensory neurons.

• Primary Identifier: Expr976
• Remark: Reporter gene fusion type not specified. The antibody staining showed EAT-20 expression in the seam cells and hypodermal cells, which is inconsistent with the absence of GFP expression in those cells in the promoter trap lines, suggesting that p5E5 may not contain all the cis-regulatory elements necessary for the expression of the eat-20 gene.
• Reporter Gene: GFP expression was analyzed in ncIs1 hermaphrodites carrying p5E5 as a stable integrated transgenic array. Though p5E5 contains a 2-kb genomic fragment derived from LGV at the 5' side in addition to the fragment corresponding to the eat-20 gene, it is confirmed that an extrachromosomal array of p5E5 and that of p5E5del, in which the 2-kb fragment was deleted, gave the same GFP expression pattern. Thus, the fragment at the 5' part of the insert had no effects on the expression of GFP. Neurons expressing GFP were first identified in L1 larvae.
• Pattern: In embryos, GFP expression was first detected at the 2-fold stage. Sometimes eight cells in the anterior half of the body expressed GFP. At the 3-fold stage, several cells around the pharynx expressed GFP in most embryos. About half of the embryos also expressed GFP weakly in the pharynx. At L1, GFP was detected in a subset of neurons. About half of the larvae also expressed GFP in the pharynx; expression in the terminal bulb was the most intense. At the adult stage, GFP was detected in the pharyngeal muscles, m3, m4, and m6. In addition, GFP was detected in a subset of neurons: IL1, OLQ, BAG, and ALN, several circumpharyngeal cells, and coelomocytes. Very faint GFP fluorescence was detected in the pharyngeal neurons including I4 and I5 in L1 larvae.

11 Life Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	The whole period of embryogenesis in the nematode Caenorhabditis elegans, from the formation of an egg until hatching.		embryo Ce	WBls:0000003
	The C. elegans life stage spanning 620-800min(hatch) after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. A stage after elongation is over. The last stage of embryogenesis. Also called pre-hatched embryo, late embryo or morphogenetic embryo.		fully-elongated embryo Ce	WBls:0000021
	The C. elegans life stage spanning 350-620min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The stage that embryo starts elongation until elongation is over.		elongating embryo Ce	WBls:0000015
	The C. elegans life stage spanning 290-350min after first cleavage at 20 Centigrade. Proliferate from 421 cells to 560 cells. The stage when embryo just finished gastrulation and is enclosing.		enclosing embryo Ce	WBls:0000013
	The C. elegans life stage spanning 0-350min after first cleavage at 20 Centigrade. Proliferate from 1 cell to 560 cells. From start of first cleavage until cleavage is over.		proliferating embryo Ce	WBls:0000004
	The C. elegans life stage spanning 520-620min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo is elongated and tripple fold. A stage between 2-fold embryo and fully-elongated embryo. Also called pretzel embryo or pretzel stage.		3-fold embryo Ce	WBls:0000020
	The C. elegans life stage spanning 420-460min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo is elongated and fold back 50%. A stage between comma embryo and 2-fold embryo.		1.5-fold embryo Ce	WBls:0000018
	The C. elegans life stage spanning 390-420min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo looks like a comma. A stage between bean embryo and 1.5-fold embryo.		comma embryo Ce	WBls:0000017
	The C. elegans life stage spanning 460-520min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The shape of embryo is elongated and double fold. A stage between 1.5-fold embryo and 3-fold embryo.		2-fold embryo Ce	WBls:0000019
	The C. elegans life stage spanning 350-390min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. Emrbyo elongation started but have not formed comma shape yet. The shape of embryo looks like a lima bean. A stage right before comma embryo. Also called lima embryo or lima bean stage.		bean embryo Ce	WBls:0000016
	The C. elegans life stage spanning 210-350min after first cleavage at 20 Centigrade. Proliferate from 421 cells to 560 cells. The stage before the fast cleavage of cells finishes.		late cleavage stage embryo Ce	WBls:0000014

5 Parents

Definition	Name	Synonym	Primary Identifier
neuron with its cell body situated in the head, excluding the pharynx.	head neuron		WBbt:0006751
embryonic cell	ABalppappa		WBbt:0005975
cell that exists in and is part of an embryo.	embryonic cell		WBbt:0007028
Neuron class of two neurons with ciliated endings, in the head, with elliptical, closed, sheet-like processes near the cilium, which envelop a piece of hypodermis.	BAG		WBbt:0006825
portion of anterior ganglion of somatic nervous system that is near or posteior to the metacorpus of pharynx.	anterior ganglion (post)		WBbt:0005371