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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Aldehyde dehydrogenase 6, a cytosolic retinaldehyde dehydrogenase prominently expressed in sensory neuroepithelia during development.

We have isolated the chick and mouse homologs of human aldehyde dehydrogenase 6 (ALDH6) that encode a third cytosolic retinaldehyde-specific aldehyde dehydrogenase. In both chick and mouse embryos, strong expression is observed in the sensory neuroepithelia of the head. In situ hybridization analysis in chick shows compartmentalized expression primarily in the ventral retina, olfactory epithelium, and otic vesicle; additional sites of expression include the isthmus, Rathke's pouch, posterior spinal cord interneurons, and developing limbs. Recombinant chick ALDH6 has a K(0.5) = 0.26 microm, V(max) = 48.4 nmol/min/mg and exhibits strong positive cooperativity (H = 1.9) toward all-trans-retinaldehyde; mouse ALDH6 has similar kinetic parameters. Expression constructs can confer 1000-fold increased sensitivity to retinoic acid receptor-dependent signaling from retinol in transient transfections experiments. The localization of ALDH6 to the developing sensory neuroepithelia of the eye, nose, and ear and discreet sites within the CNS suggests a role for RA signaling during primary neurogenesis at these sites.[1]


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