Nuclear receptor subfamily 1 group B member 1-A

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Contents

[edit] Source Organism

Danio rerio (Zebrafish) (Brachydanio rerio).

[edit] Taxomomy

Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;Actinopterygii; Neopterygii; Teleostei; Ostariophysi; Cypriniformes;Cyprinidae; Danio.

[edit] Subcellular Localization

Nucleus.

[edit] Developmental Stage

Not expressed maternally. First detected at 8 hours post-fertilization (hpf) during gastrulation. Expression then increases, reaching a peak at 24 hpf and decreasing from 30- 48 hpf. At 9 hpf, expressed throughout the dorsal epiblast except at the dorsal midline, and ventrally in prospective tail and head regions. At 10-11 hpf, expressed in presumptive hindbrain, posterior neural plate, lateral mesoderm and tail bud. At 12 hpf, strongly expressed in the neural epithelium and tail bud and expressed at low levels elsewhere including the eye. At 24 hpf, restricted to the hindbrain with an anterior border at rhombomere 6-7, to anterior spinal cord and to head mesenchyme just posterior to the otic vesicle. At 48 hpf, hindbrain expression remains and there is diffuse expression in non-neural tissue in the pharyngeal region.

[edit] Similarity

Belongs to the nuclear hormone receptor family. NR1 subfamily. Contains 1 nuclear receptor DNA-binding domain.

[edit] Post translational Modification

[edit] Function

This is a receptor for retinoic acid. This metabolite has profound effects on vertebrate development. Retinoic acid is a morphogen and is a powerful teratogen. This receptor controls cell function by directly regulating gene expression.