WormMine: ExpressionPattern Expr725

• Pattern: UBC-beta-gal expression (from pZMI.1 and pZMII.1) was observed consistently in embryos, larvae and adults. Expression was detected in most cells in the embryos. In L1, L2, L3 and dauer larvae, most somatic tissues including neurons, pharynx, hypodermis and body muscle were intensely stained. In a small percentage of animals, intestinal staining were also stained. At the onset of L4, staining was restricted to neurons, pharynx and hypodermis. Staining was only seen in the nervous system in adults. An interesting feature of the expression patterns from pZMI.1 and II.1 is that, despite different tissue specificity in larval and adult stages, ubc-2-lacZ expression is seen constitutively in the nervous system at all post-embryonic stages. From L1 onwards, intense beta-gal staining was seen in ventral nerve cord, including P-cells and neurons, pharyngeal ganglia and retrovesicular ganglia.
• Primary Identifier: Expr725
• Remark: This information was extracted from published material (Archana Sharma-Oates, Andrew Mounsey and Ian A. Hope). let-70 = ubc-2 --WS59.
• Reporter Gene: [ubc-2::lacZ] translational fusion. To make constructs pZMI.1 and pZMII.1, the lacZ coding region, a 3.3 kb BamHI-ApaI fragment from pPD16.43, was inserted in-frame into the second exon (BamHI-ApaI sites) of the ubc-2 genomic clone. PZMII.1 contained the 1.4 kb HindIII-BglII upstream sequence and the 2.6 kb 3' non-coding sequence. In pZMI1, a 6 kb BglII fragment preceding the initiation methionine codon and 2.6 kb of sequences downstream of the TAG stop codon was included in the construct to provide regulatory elements for expression.

19 Anatomy Terms

Definition	Name	Synonym	Primary Identifier
A chain of very large cuboidal cells forming a wide central lumen in which food arrives from the posterior pharynx, is digested, and from which waste products proceed to the rectum. Intestinal rings form in groups of two and four cells surrounding the common lumen; thus the epithelium is only one cell deep at any point, with neighboring cells firmly secured to their neighbors by apical adherens junctions. These cells have very large nuclei and many large vacuoles, yolk granules, and other inclusions; the latter increase in number and electron density as the animal ages.	intestine	gut	WBbt:0005772
a large process bundle that runs along the vental mid-line extending from the ventral region of the nerve ring.	ventral nerve cord	ventral cord	WBbt:0005829
Longitudinal bands of muscle cells surrounding animal body, with one band running in each quadrant of the body, regulated contraction and relaxation of these muscles cause locomotion.	body wall musculature	body muscle	WBbt:0005813
Epidermal layer.	hypodermis	epidermis	WBbt:0005733
The tenth (count from anterior-most) of twelve postembryonic blast cells for ventral cord motorneurons, ventral hypodermis, vulva, male preanal ganglion; ventral hypodermis in L1.	P10		WBbt:0006779
The ninth (count from anterior-most) of twelve postembryonic blast cells for ventral cord motorneurons, ventral hypodermis, vulva, male preanal ganglion; ventral hypodermis in L1.	P9		WBbt:0006778
Postembryonic blast cells for ventral cord motorneurons, ventral hypodermis, vulva, male preanal ganglion; ventral hypodermis in L1	P12	lineage name: ABprapappa	WBbt:0004409
Postembryonic blast cells for ventral cord motorneurons, ventral hypodermis, vulva, male preanal ganglion; ventral hypodermis in L1	P11	lineage name: ABplapappa	WBbt:0004410
Ganglion that lies at the anterior limit of the ventral nerve cord, near the ventral ganglion and nerve ring in the head posterior to the excretory pore. It is open and continuous with the region containing the motoneurons of the ventral cord. In the early L1 this ganglion holds 12 neuron cell bodies plus one neuroblast (Sulston and Horvitz, 1977; White et al., 1986). In the adult animal, the ganglion holds 20 neuron cell bodies.	retrovesicular ganglion		WBbt:0005656
The third (count from anterior-most) of twelve postembryonic blast cells for ventral cord motorneurons, ventral hypodermis, vulva, male preanal ganglion; ventral hypodermis in L1.	P3		WBbt:0006772
The second (count from anterior-most) of twelve postembryonic blast cells for ventral cord motorneurons, ventral hypodermis, vulva, male preanal ganglion; ventral hypodermis in L1.	P2		WBbt:0006771
The first (count from anterior-most) of twelve postembryonic blast cells for ventral cord motorneurons, ventral hypodermis, vulva, male preanal ganglion; ventral hypodermis in L1.	P1	P1 post-embryonic blast cell	WBbt:0006770
The seventh (count from anterior-most) of twelve postembryonic blast cells for ventral cord motorneurons, ventral hypodermis, vulva, male preanal ganglion; ventral hypodermis in L1.	P7		WBbt:0006776
The sixth (count from anterior-most) of twelve postembryonic blast cells for ventral cord motorneurons, ventral hypodermis, vulva, male preanal ganglion; ventral hypodermis in L1.	P6		WBbt:0006775
The fifth (count from anterior-most) of twelve postembryonic blast cells for ventral cord motorneurons, ventral hypodermis, vulva, male preanal ganglion; ventral hypodermis in L1.	P5		WBbt:0006774
The fourth (count from anterior-most) of twelve postembryonic blast cells for ventral cord motorneurons, ventral hypodermis, vulva, male preanal ganglion; ventral hypodermis in L1.	P4		WBbt:0006773
The eighth (count from anterior-most) of twelve postembryonic blast cells for ventral cord motorneurons, ventral hypodermis, vulva, male preanal ganglion; ventral hypodermis in L1.	P8		WBbt:0006777
ventral ganglion, anterior part.	ventral ganglion (ant)		WBbt:0005266
ventral ganglion, posterior part.	ventral ganglion (post)		WBbt:0005264

1 Genes

WormBase Gene ID	Gene Name	Sequence Name	Organism
WBGene00002344	let-70	M7.1	Caenorhabditis elegans

7 Life Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	The stage that begins when a C.elegans individual is fully-developed and has reached maturity.		adult Ce	WBls:0000041
	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 second stage larva. At 25 Centigrade, it ranges 25.5-32.5 hours after fertilization, 11.5-18.5 hours after hatch.		L2 larva Ce	WBls:0000027
	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
	The first stage larva. At 25 Centigrade, it ranges 14-25.5 hours after fertilization, 0-11.5 hours after hatch.		L1 larva Ce	WBls:0000024
	The whole period of embryogenesis in the nematode Caenorhabditis elegans, from the formation of an egg until hatching.		embryo Ce	WBls:0000003
	A third stage larva specialized for dispersal and long term survival.		dauer larva Ce	WBls:0000032