The enzyme recognizes all-trans-retinol and all-trans-retinal as substrates and exhibits a strong preference for NAD+/NADH as cofactors. Recognizes the substrate both in free form and when bound to cellular-retinol-binding-protein (CRBP1), but has higher affinity for the bound form . No activity with 11-cis-retinol or 11-cis-retinal (cf. EC 1.1.1.315, 11-cis retinol dehydrogenase). Also active with 3alpha-hydroxysteroids .
multifunctional enzyme. In addition to retinol dehydrogenase activity, RDH1 has strong 3alpha-hydroxy and weak 17beta-hydroxy steroid dehydrogenase activities
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SYSTEMATIC NAME
IUBMB Comments
all-trans retinol:NAD+ oxidoreductase
The enzyme recognizes all-trans-retinol and all-trans-retinal as substrates and exhibits a strong preference for NAD+/NADH as cofactors. Recognizes the substrate both in free form and when bound to cellular-retinol-binding-protein (CRBP1), but has higher affinity for the bound form [2]. No activity with 11-cis-retinol or 11-cis-retinal (cf. EC 1.1.1.315, 11-cis retinol dehydrogenase). Also active with 3alpha-hydroxysteroids [2].
RDH1 has 811fold higher activity with NAD+ versus NADP+. Higher activity with all-trans-retinol versus 9-cis-retinol. Multifunctional enzyme. In addition to retinol dehydrogenase activity, RDH1 has strong 3alpha-hydroxy and weak 17beta-hydroxy steroid dehydrogenase activities
no activity toward all-trans-retinol is detected using the microsomal and mitochondrial preparations of recombinant murine RDHE2 protein expressed in Spodoptera frugiperda Sf9 cells. But although inactive toward retinol in isolated microsomes, RDHE2 is able to function as a retinol dehydrogenase in intact cells
no activity toward all-trans-retinol is detected using the microsomal and mitochondrial preparations of recombinant murine RDHE2 protein expressed in Spodoptera frugiperda Sf9 cells. But although inactive toward retinol in isolated microsomes, RDHE2 is able to function as a retinol dehydrogenase in intact cells
no activity toward all-trans-retinol is detected using the microsomal and mitochondrial preparations of recombinant murine RDHE2 protein expressed in Spodoptera frugiperda Sf9 cells. But although inactive toward retinol in isolated microsomes, RDHE2 is able to function as a retinol dehydrogenase in intact cells
N-ethylmaleimide does not affect the catalytic action of RDH1, but interferes with its approach to holo-CRBP1, interrupting retinol transfer. Modifying RDH with N-ethylmaleimide inhibited holo-CRBP1-supported generation of retinal by 90%
the mouse embryo expresses RDH1 as early as 7.0 days post-coitus, and expression is especially intense within the neural tube, gut, and neural crest at embryo day 10.5
analysis of the expression patterns of RDHE2, quantitative RT-PCR enzyme expression analysis. The two transcripts of Rdhe2 and Rdhe2s exhibit a largely overlapping expression pattern with the highest expression levels in skin, followed by tongue, intestine, and esophagus, trace amounts of transcripts are detected in adipose tissue, colon, and possibly testis. Rdhe2 transcripts are detected in sebaceous glands and epidermis of adult wild-type C57BL/J6 mice by in situ hybridization
analysis of the expression patterns of RDHE2, quantitative RT-PCR enzyme expression analysis. The two transcripts of Rdhe2 and Rdhe2s exhibit a largely overlapping expression pattern with the highest expression levels in skin, followed by tongue, intestine, and esophagus, trace amounts of transcripts are detected in adipose tissue, colon, and possibly testis. Rdhe2 transcripts are detected in sebaceous glands and epidermis of adult wild-type C57BL/J6 mice by in situ hybridization
analysis of the expression patterns of RDHE2, quantitative RT-PCR enzyme expression analysis. The two transcripts of Rdhe2 and Rdhe2s exhibit a largely overlapping expression pattern with the highest expression levels in skin, followed by tongue, intestine, and esophagus, trace amounts of transcripts are detected in adipose tissue, colon, and possibly testis. Rdhe2 transcripts are detected in sebaceous glands and epidermis of adult wild-type C57BL/J6 mice by in situ hybridization
analysis of the expression patterns of RDHE2S, quantitative RT-PCR enzyme expression analysis. The two transcripts of Rdhe2 and Rdhe2s exhibit a largely overlapping expression pattern with the highest expression levels in skin, followed by tongue, intestine, and esophagus, trace amounts of transcripts are detected in adipose tissue, colon, and possibly testis
analysis of the expression patterns of RDHE2S, quantitative RT-PCR enzyme expression analysis. The two transcripts of Rdhe2 and Rdhe2s exhibit a largely overlapping expression pattern with the highest expression levels in skin, followed by tongue, intestine, and esophagus, trace amounts of transcripts are detected in adipose tissue, colon, and possibly testis
analysis of the expression patterns of RDHE2S, quantitative RT-PCR enzyme expression analysis. The two transcripts of Rdhe2 and Rdhe2s exhibit a largely overlapping expression pattern with the highest expression levels in skin, followed by tongue, intestine, and esophagus, trace amounts of transcripts are detected in adipose tissue, colon, and possibly testis
facing the cytoplasm, mutants lacking amino-terminal 18 or 30 amino acids do not localize to endoplasmic reticulum but to mitochondria instead. Deletion mutant lacking 28 C-terminal amino acids localizes both to microsomal and mitochondrial fractions. Deletion of both 18 N-terminal and 28 C-terminal amino acids leeds to overwhelming detection in mitochondria. Fusion of N-terminal 22 amino acids of enzyme with green fluorescent protein localizes in endoplasmic reticulum. Fusion of N-terminal 18 amino acids of enzyme with green fluorescent protein shows diffuse localization. Fusion of green fluorescent protein with C-terminal 29 amino acids of enzyme shows diffuse cytoplasmic and nuclear localization
cytoplasmic or lumenal facing, RDH1. An N-terminal signaling sequence of 22 residues anchors RDH1 in the endoplasmic reticulum projecting into the cytoplasm
N-ethylmaleimide does not affect the catalytic action of RDH1, but interferes with its approach to holo-CRBP1, interrupting retinol transfer. The membrane context of RDH affects function
RDHs that catalyze the interconversion of retinal and retinol involved in rhodopsin turnover are members of the family of short chain dehydrogenase/reductases
deleting the positive charges from the C-terminal end of the leader, and inserting two arginine residues near the N-terminus of the signaling sequence causes 95% inversion from cytoplasmic to luminal: i.e. the mutant L3R/L5R/R16Q/R19Q/R21Q faces the lumen
outer segments of rods deficient in Rdh8 fail to reduce all-trans-retinal. Following exposure to light, a leak of retinoids from outer to inner segments is detected in rods from both wild-type and knock-out mice. In cells lacking Rdh8 or Rdh12, EC 1.1.1.300, this leak is mainly all-trans-retinal, overview. Retinal reductase activity is lost in RDH12-deficient mutants
mice lacking both the epidermal retinol dehydrogenases SDR16C5 and SDR16C6 display accelerated hair growth and enlarged meibomian glands. The upregulation of hair-follicle stem cell genes is consistent with reduced retinoic acid signaling in the skin of the double-knockout mice
mice with targeted knockout of the more catalytically active SDR16C6 enzyme have no obvious phenotype, possibly due to functional redundancy, because Sdr16c5 and Sdr16c6 exhibit an overlapping expression pattern during later developmental stages and in adulthood. Mice lacking both epidermal retinol dehydrogenases SDR16C5 and SDR16C6 display accelerated hair growth and enlarged meibomian glands
two murine epidermal retinol dehydrogenases, short-chain dehydrogenase/reductase family 16C member 5 (SDR16C5 or RDHE2) and SDR16C6 (RDHE2S), contribute to retinoic acid biosynthesis in living cells and are also essential for the oxidation of retinol to retinaldehyde in vivo
two murine epidermal retinol dehydrogenases, short-chain dehydrogenase/reductase family 16C member 5 (SDR16C5 or RDHE2) and SDR16C6 (RDHE2S), contribute to retinoic acid biosynthesis in living cells and are also essential for the oxidation of retinol to retinaldehyde in vivo. RDHE2S is a more active enzyme than RDHE2
in vertebrate rod cells, retinoid dehydrogenases/reductases are critical for reducing the reactive aldehyde all-trans-retinal that is released by photoactivated rhodopsin, to all-trans-retinol. Reduction of all-trans-retinal in vertebrate rod photoreceptors requires the combined action of RDH8 and RDH12. RDH8 in the outer segment provides most of the activity needed to reduce all-trans-retinal generated by the light response, overview
RDH1 contributes to a reconstituted pathway of all-trans-retinal biosynthesis, when expressed in intact cells with each of the three retinal dehydrogenases
energy status regulates all-trans-retinoic acid biosynthesis at the rate-limiting step, catalyzed by retinol dehydrogenases. Six hours after re-feeding, isoform Rdh1 expression decreases 80-90% in liver and brown adipose tissue, relative to mice fasted 16 h. All-trans-retinoic acid in the liver is decreased 44% 3 h after reduced Rdh expression. Oral gavage with glucose or injection with insulin decreases Rdh1 mRNA 50% or greater in mouse liver
the epidermal retinol dehydrogenase short-chain dehydrogenase/reductase family 16C member 5 (SDR16C5 or RDHE2) contributes to retinoic acid biosynthesis in living cells and is also essential for the oxidation of retinol to retinaldehyde in vivo. The retinol dehydrogenase activities of murine SDR16C5 and SDR16C6 enzymes are not critical for survival but are responsible for most of the retinol dehydrogenase activity in skin, essential for the regulation of the hair-follicle cycle, and required for the maintenance of both sebaceous and meibomian glands
the epidermal retinol dehydrogenase short-chain dehydrogenase/reductase family 16C member 6 (SDR16C6 or RDHE2S) contributes to retinoic acid biosynthesis in living cells and is also essential for the oxidation of retinol to retinaldehyde in vivo. RDHE2S is a more active enzyme than RDHE2. The upregulation of hair-follicle stem cell genes is consistent with reduced retinoic acid signaling in the skin of the double-knockout mice. The retinol dehydrogenase activities of murine SDR16C5 and SDR16C6 enzymes are not critical for survival but are responsible for most of the retinol dehydrogenase activity in skin, essential for the regulation of the hair-follicle cycle, and required for the maintenance of both sebaceous and meibomian glands
RDH1 mutant, deleting the positive charges from the C-terminal end of the leader, and inserting two arginine residues near the N-terminus of the signaling sequence causes 95% inversion from cytoplasmic to luminal, the mutant faces the lumen
mutants lacking amino-terminal 18 or 30 amino acids do not localize to endoplasmic reticulum but to mitochondria instead. Deletion mutant lacking 28 C-terminal amino acids localizes both to microsomal and mitochondrial fractions. Deletion of both 18 N-terminal and 28 C-terminal amino acids leeds to overwhelming detection in mitochondria. Fusion of N-terminal 22 amino acids of enzyme with green fluorescent protein localizes in endoplasmic reticulum. Fusion of N-terminal 18 amino acids of enzyme with green fluorescent protein shows diffuse localization. Fusion of green fluorescent protein with C-terminal 29 amino acids of enzyme shows diffuse cytoplasmic and nuclear localization.
generation of single knockout Rdhe2-/- and Rdhe2-/-,Rdhe2s-/- double-knockout mice (DKO) lacking both RDHE2 and RDHE2S using CRISPR-mediated gene editing. Phenotypes of femal DKO mice compared to male wild-type mice, overview. Elevated expression of hair-follicle growth and differentiation marker genes in DKO skin relative to littermate wild-type skin. The lack of expression of RDHE2 and RDHE2S results in enlargement of meibomian glands of DKO animals
generation of single knockout Rdhe2-/- and Rdhe2-/-,Rdhe2s-/- double-knockout mice (DKO) lacking both RDHE2 and RDHE2S using CRISPR-mediated gene editing. Phenotypes of femal DKO mice compared to male wild-type mice, overview. Elevated expression of hair-follicle growth and differentiation marker genes in DKO skin relative to littermate wild-type skin. The lack of expression of RDHE2 and RDHE2S results in enlargement of meibomian glands of DKO animals
generation of single knockout Rdhe2-/- and Rdhe2-/-,Rdhe2s-/- double-knockout mice (DKO) lacking both RDHE2 and RDHE2S using CRISPR-mediated gene editing. Phenotypes of femal DKO mice compared to male wild-type mice, overview. Elevated expression of hair-follicle growth and differentiation marker genes in DKO skin relative to littermate wild-type skin. The lack of expression of RDHE2 and RDHE2S results in enlargement of meibomian glands of DKO animals
generation of single knockout Rdhe2s-/- and Rdhe2-/-,Rdhe2s-/- double-knockout mice (DKO) lacking both RDHE2 and RDHE2S using CRISPR-mediated gene editing. Phenotypes of femal DKO mice compared to male wild-type mice, overview. Elevated expression of hair-follicle growth and differentiation marker genes in DKO skin relative to littermate wild-type skin. The lack of expression of RDHE2 and RDHE2S results in enlargement of meibomian glands of DKO animals
generation of single knockout Rdhe2s-/- and Rdhe2-/-,Rdhe2s-/- double-knockout mice (DKO) lacking both RDHE2 and RDHE2S using CRISPR-mediated gene editing. Phenotypes of femal DKO mice compared to male wild-type mice, overview. Elevated expression of hair-follicle growth and differentiation marker genes in DKO skin relative to littermate wild-type skin. The lack of expression of RDHE2 and RDHE2S results in enlargement of meibomian glands of DKO animals
generation of single knockout Rdhe2s-/- and Rdhe2-/-,Rdhe2s-/- double-knockout mice (DKO) lacking both RDHE2 and RDHE2S using CRISPR-mediated gene editing. Phenotypes of femal DKO mice compared to male wild-type mice, overview. Elevated expression of hair-follicle growth and differentiation marker genes in DKO skin relative to littermate wild-type skin. The lack of expression of RDHE2 and RDHE2S results in enlargement of meibomian glands of DKO animals
recombinant expression of C-terminally His6-tagged enzyme in Spodoptera frugiperda Sf9 cell microsomes, mitochondria from RDHE2S-expressing Sf9 cells exhibit a much lower activity than RDHE2S microsomes under the same assay conditions. Transient recombinant expression of C-terminally FLAG-tagged enzyme in HEK-293 cells. Quantitative RT-PCR enzyme expression analysis
recombinant expression of C-terminally His6-tagged enzyme in Spodoptera frugiperda Sf9 cell microsomes, no activity toward all-trans-retinol is detected using the microsomal and mitochondrial preparations of recombinant murine RDHE2 protein expressed in Spodoptera frugiperda Sf9 cells. Funtional transient recombinant expression of C-terminally FLAG-tagged enzyme in HEK-293 cells, the activity of RDHE2 resulted in a 3fold increase in RA biosynthesis relative to mock-transfected cells. Quantitative RT-PCR enzyme expression analysis
Elements in the N-terminal signaling sequence that determine cytosolic topology of short-chain dehydrogenases/reductases. Studies with retinol dehydrogenase type 1 and cis-retinol/androgen dehydrogenase type 1
Pares, X.; Farres, J.; Kedishvili, N.; Duester, G.
Medium- and short-chain dehydrogenase/reductase gene and protein families: Medium-chain and short-chain dehydrogenases/reductases in retinoid metabolism
Chen, W.; Smith, S.M.; Napoli, J.L.: Molecular characterization of a mouse short chain dehydrogenase/reductase active with all-trans-retinol in intact cells, mRDH1