WormMine: ExpressionPattern Expr1410

• Pattern: Expression in Z1 and Z4, the somatic gonad precursors, starts a few hours after these are born. Up to the formation of the somatic gonad primordium in late L2, LIN-26 protein was detected in all cells of the somatic gonad, except in the distal tip cells or dtcs (Z1.aa and Z4.pp). Staining was strongest in Z1 and Z4 and became weaker after each cell division. However, after Z1.a and Z4.p divided, LIN-26 was initially not detected in any of their daughters, but resynthesis occurred in Z1.ap and Z4.pa. During the L3 stage, expression was only detected in the anchor cell (AC) until the Pn.pxx cells were generated. After the last division round in L4 larvae, all uterine nuclei and two spermathecal-uterine junction nuclei expressed LIN-26 at very low levels.
• Primary Identifier: Expr1410
• Remark: Expression pattern at adult stage was not described.
• Subcellular Localization: nuclei

14 Anatomy Terms

Definition	Name	Synonym	Primary Identifier
A valve tissue that connects the spermatheca and the uterus of a hermaphrodite gonad.	spermathecal-uterine junction	sp-ut valve	WBbt:0006756
somatic cell that situates at the tip of a gonad arm.	distal tip cell	DTC	WBbt:0006865
anchor cell, induces vulva, part of hermaphrodite gonad.	anchor cell	AC	WBbt:0004522
organ producing either sperm or ova.	gonad		WBbt:0005175
cell, anterior descendent of Z1, in hermaphrodite.	Z1.a hermaphrodite		WBbt:0007022
toroidal epithelial cell that make up the bulk of the uterus, four cells anterior and four cells posterior to the vulva.	uterine toroidal epithelial cell	ut cell	WBbt:0006784
Somatic gonad precursor cell	Z4	lineage name: MSappaap	WBbt:0004574
Somatic gonad precursor cell	Z1	lineage name: MSpppaap	WBbt:0004577
cell, posterior descendent of Z1.a.	Z1.ap		WBbt:0007027
post-embryonic cell of pedigree Z4.pa	Z4.pa		WBbt:0007790
post-embryonic cell of pedigree Z1.pa	Z1.pa		WBbt:0007594
cell forming dorsal epithelium in central region of the uterus; formed by fusion of four cells.	dorsal uterine cell	du cell	WBbt:0006782
cell, anterior descendent of Z4.	Z4.a		WBbt:0007025
cell, posterior descendent of Z1.	Z1.p		WBbt:0007023

1 Genes

WormBase Gene ID	Gene Name	Sequence Name	Organism
WBGene00003012	lin-26	F18A1.2	Caenorhabditis elegans

2 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
	A developmental life stage of the nematode Caenorhabditis elegans that occurs from egg hatching until adulthood.		larva Ce	WBls:0000023