WormMine: ExpressionPattern Expr1434

• Pattern: GFP expression in ayIs4[egl-17::GFP] hermaphrodites is first observed in two large unidentified cells in the head at the 3-fold stage of embryogenesis. After hatching, expression in these cells fades and is then observed in the M4 pharyngeal neuron where it remains throughout postembryonic development. Weak GFP expression can occasionally be observed in the ventral hypodermis in late first stage larvae (L1). This weak expression disappears by the L1 lethargus and was not characterized further. Strong GFP expression is observed in the VPCs and their descendants in two phases starting in late L2 and persisting through adulthood. During early vulval development (late L2-L3), expression is observed in P6.p and its descendants, fading in the early L4. In the mid L4, GFP expression is seen in the N and T descendants of P5.p and P7.p where it remains throughout adulthood.
• Primary Identifier: Expr1434
• Reporter Gene: [egl-17::GFP] translational fusion. Contains 3.9 kb of 5'UTR, the full-length EGL-17 sequence and 3'UTR.

17 Anatomy Terms

Definition	Name	Synonym	Primary Identifier
Epidermal layer.	hypodermis	epidermis	WBbt:0005733
anterior-most body region containing the pharynx.	head		WBbt:0005739
cell, posterior descendent of P7.p	P7.pp		WBbt:0006984
cell, anterior descendent of P7.p	P7.pa		WBbt:0006983
post-embryonic cell of pedigree P5.pa	P5.pa		WBbt:0007252
post-embryonic cell of pedigree P5.ppa	P5.ppa		WBbt:0007256
post-embryonic cell of pedigree P5.pp	P5.pp		WBbt:0007255
post-embryonic cell of pedigree P5.pap	P5.pap		WBbt:0007254
post-embryonic cell of pedigree P5.paa	P5.paa		WBbt:0007253
post-embryonic cell of pedigree P7.ppp	P7.ppp		WBbt:0007266
post-embryonic cell of pedigree P7.ppa	P7.ppa		WBbt:0007265
post-embryonic cell of pedigree P7.pap	P7.pap		WBbt:0007264
Posterior daughter cell of P5.pp, fuses into hermaphrodite vulD syncytium.	P5.ppp	lineage name: P5.ppp	WBbt:0004477
Anterior daughter cell of P7.pa, fuses into hermaphrodite vulD syncytium.	P7.paa	lineage name: P7.paa	WBbt:0004448
Neuron class of one pharyngeal motorneuron.	M4 neuron	lineage name: MSpaaaaaa	WBbt:0004467
descendent cell of P5, posterior	P5.p		WBbt:0006893
descendent cell of P7, posterior	P7.p		WBbt:0006895

1 Genes

WormBase Gene ID	Gene Name	Sequence Name	Organism
WBGene00001185	egl-17	F38G1.2	Caenorhabditis elegans

3 Life Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	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 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
	A developemental life stage of the nematode Caenorhabditis elegans that occurs from egg hatching until death.		postembryonic Ce	WBls:0000022