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Journal ArticleDOI

The Tol2kit: a multisite gateway-based construction kit for Tol2 transposon transgenesis constructs.

TLDR
The Tol2kit greatly facilitates zebrafish transgenesis, simplifies the sharing of clones, and enables large‐scale projects testing the functions of libraries of regulatory or coding sequences.
Abstract
Transgenesis is an important tool for assessing gene function. In zebrafish, transgenesis has suffered from three problems: the labor of building complex expression constructs using conventional subcloning; low transgenesis efficiency, leading to mosaicism in transient transgenics and infrequent germline incorporation; and difficulty in identifying germline integrations unless using a fluorescent marker transgene. The Tol2kit system uses site-specific recombination-based cloning (multisite Gateway technology) to allow quick, modular assembly of [promoter]-[coding sequence]-[3' tag] constructs in a Tol2 transposon backbone. It includes a destination vector with a cmlc2:EGFP (enhanced green fluorescent protein) transgenesis marker and a variety of widely useful entry clones, including hsp70 and beta-actin promoters; cytoplasmic, nuclear, and membrane-localized fluorescent proteins; and internal ribosome entry sequence-driven EGFP cassettes for bicistronic expression. The Tol2kit greatly facilitates zebrafish transgenesis, simplifies the sharing of clones, and enables large-scale projects testing the functions of libraries of regulatory or coding sequences.

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Citations
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Journal ArticleDOI

Fxr signaling and microbial metabolism of bile salts in the zebrafish intestine

TL;DR: In this paper, the authors provided a cellular atlas of the zebrafish intestinal epithelium and uncovered roles for Fxr in transcriptional and differentiation programs in ileal and other cell types.
Journal ArticleDOI

Embryonic exposure to excess thyroid hormone causes thyrotrope cell death

TL;DR: Using the zebrafish embryo as a model for thyroid axis development, the authors characterized the ontogeny of negative feedback regulation of thyrotrope function and examined the effect of excess TH on thyrope development.
Journal ArticleDOI

Notch-Mediated Determination of Hair-Bundle Polarity in Mechanosensory Hair Cells of the Zebrafish Lateral Line

TL;DR: Through a combination of theoretical and experimental approaches, it is shown that Notch1a-mediated lateral inhibition produces a bistable switch that reliably gives rise to cell pairs of opposite polarity.
Book ChapterDOI

H2O2: A Chemoattractant?

TL;DR: This work presents a detailed protocol of the zebrafish tail fin wounding assay and explains how to use it for analyzing leukocyte chemotaxis in vivo, and outlines a method for H2O2 measurement in live zebra fish larvae using the genetically encoded sensor HyPer on a wide-field and a spinning disk confocal microscope.
Journal ArticleDOI

Hypothalamic Projections to the Optic Tectum in Larval Zebrafish.

TL;DR: Tectal processing in larval zebrafish is modulated by hypothalamic inhibitory inputs to the deep tectal neuropil, suggesting that this role extends beyond the visual system, and beyond the processing of exclusively retinal inputs.
References
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Journal ArticleDOI

Stages of embryonic development of the zebrafish.

TL;DR: A series of stages for development of the embryo of the zebrafish, Danio (Brachydanio) rerio is described, providing for flexibility and continued evolution of the staging series as the authors learn more about development in this species.
Journal ArticleDOI

Improved monomeric red, orange and yellow fluorescent proteins derived from Discosoma sp. red fluorescent protein.

TL;DR: The latest red version matures more completely, is more tolerant of N-terminal fusions and is over tenfold more photostable than mRFP1, and three monomers with distinguishable hues from yellow-orange to red-orange have higher quantum efficiencies.
Journal ArticleDOI

An Hsp70-like protein in the ER: identity with the 78 kd glucose-regulated protein and immunoglobulin heavy chain binding protein.

TL;DR: A cDNA clone is characterized that encodes a protein related to the 70 kd heat shock protein, but is expressed in normal rat liver, and it is identical with two previously described proteins: GRP78, whose synthesis is induced by glucose starvation, and BiP, which is found bound to immunoglobulin heavy chains in pre-B cells.
Journal ArticleDOI

GAL4-VP16 is an unusually potent transcriptional activator

TL;DR: It is shown that the hybrid protein (GAL4-VP16) activates transcription unusually efficiently in mammalian cells when bound close to, or at large distances from the gene, and suggested that the activating region of VP16 may be near-maximally potent.
Journal ArticleDOI

DNA Cloning Using In Vitro Site-Specific Recombination

TL;DR: A method called recombinational cloning is described that uses in vitro site-specific recombination to accomplish the directional cloning of PCR products and the subsequent automatic subcloning of the DNA segment into new vector backbones at high efficiency.
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