WormMine: ExpressionPattern Expr2934

• Pattern: PAR-3 was detected in the vulval cells, as well as in most or all somatic gonad precursor cells, including ancestors of uterus, sheath, and spermatheca starting during the third larval stage (L3; about 25-29 hours at 25 centigrades). PAR-3 began to accumulate in developing uterine, sheath and spermathecal cells during the late-L3 stage. By the mid-L4 stage most somatic gonad precursors expressed PAR-3, with the exception of cells at the boundary of the uterus and the spermatheca, which were presumed to be precursors of the spemathecal valve.
• Primary Identifier: Expr2934
• Remark: The appearance of AJM-1 at apical junctions roughly correlated with the disappearance of PAR-3.
• Subcellular Localization: At late-L3 stage, PAR-3 appeared to accumulate below the cell membranes that face neighboring cells. As development proceeded, asymmetric distribution of PAR-3 became evident.

10 Anatomy Terms

Definition	Name	Synonym	Primary Identifier
an accordion-like tube that contains sperm and is the site of oocyte fertilization.	spermatheca		WBbt:0005319
The organ in which the eggs are developed and protected until laid.	uterus		WBbt:0006760
adult vulval toroid cell, F, formed by fusion of precursors of lineage names P6.papl, P6.papr, P6.ppal and P6.ppar.	vulF		WBbt:0006768
adult vulval toroid cell, E, formed by fusion of precursors of lineage names P6.paal, P6.paar, P6.pppl and P6.pppr.	vulE		WBbt:0006767
five pairs of thin gonadal sheath cells form a single layer covering the germ line component of each arm, each pair occupying a stereotyped position along the gonad proximal-distal axis.	gonadal sheath cell		WBbt:0005828
adult vulval toroid cell, C, formed by fusion of precursors of lineage names P5.ppal, P5.ppar, P7.papl and P7.papr.	vulC		WBbt:0006765
adult vulval toroid cell, D, formed by fusion of precursors of lineage names P5.ppp and P7.paa.	vulD		WBbt:0006766
adult vulval toroid cell, B2.	vulB2		WBbt:0006764
adult vulval toroid cell, B1, formed by fusion of precursors of lineage names P5.papa and P7.ppap.	vulB1		WBbt:0006763
adult vulval toroid cell, A, formed by fusion of precursors of lineage names P5.paaa, P5.paap, P7.pppa and P7.pppp	vulA		WBbt:0006762

1 Genes

WormBase Gene ID	Gene Name	Sequence Name	Organism
WBGene00003918	par-3	F54E7.3	Caenorhabditis elegans

2 Life Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	The third stage larva. At 25 Centigrade, it ranges 32.5-40 hours after fertilization, 18.5-26 hours after hatch.		L3 larva Ce	WBls:0000035
	The fourth stage larva. At 25 Centigrade, it ranges 40-49.5 hours after fertilization, 26-35.5 hours after hatch.		L4 larva Ce	WBls:0000038