The invention relates to retinol dehydratase and the DNA molecule that encodes it.
Retinol dehydratase is the enzyme that synthesizes the retro-retinoid anhydroretinol in the Spodoptera frugiperda insect cell line Sf-21.
The isolated retinol dehydratase protein or polypeptide of the present invention can be combined with a pharmaceutically acceptable carrier or used alone for administration to mammals, particularly humans, for preventing cell growth and/or uncontrolled cell growth in cells, which are growth dependent on retinol and/or 14-hydroxy-4,14-retroretinol.
Patients with ALA-dehydratase-deficient porphyria (ADP) display little activity of ALA dehydratase in erythrocytes or in nonerythroid cells, whereas their parents show about 50% enzyme activity.
In lead poisoning, deficient erythrocyte ALA dehydratase can be restored to normal in vitro with the sulfhydryl reagent dithiothreitol, whereas a genetic deficiency of this enzyme is not restored.
This structural analog of ALA is a potent inhibitor of the dehydratase.
Effect of phenylhydrazine, hydroxylamine, and amino acids on serine dehydratase activity in cell extracts of the C.
Reactivation is expressed as a percentage of the activity of the enzyme stored under anaerobic conditions for the duration of the inactivation in air and subsequent reactivation with Fe and DTT.
The peptide sequences near the bound pyridoxal phosphate are conserved in serine dehydratase from rat liver and threonine dehydratases from yeast and Escherichia coli.
References - threonine dehydratase - HORT640 - Metabolic Plant Physiology - Department of Horticulture and Landscape ...(Site not responding. Last check: 2007-10-24)
Hammer VA, Rogers QR, Freedland RA 1996 Threonine is catabolized by L-threonine 3-dehydrogenase and threonine dehydratase in hepatocytes from domestic cats (Felis domestica).
Parsot C 1986 Evolution of biosynthetic pathways: a common ancestor for threonine synthase, threonine dehydratase and D-serine dehydratase.
Szamosi IT, Shaner DL, Singh BK 1994 Inhibition of threonine dehydratase is herbicidal.
Plant Gene Register PGR96-033(Site not responding. Last check: 2007-10-24)
The cDNA encoding IGP dehydratase was isolated from a lamda ACT pea cDNA library (J. Kim and A. Theologis, unpublished data) by complementation of yeast (Saccharomyces serevisiae) lacking the his3 gene.
The cDNA (1229 nucleotides) encodes an IGP dehydratase proenzyme (281 amino acids) with a putative 84 amino acid chloroplast transit peptide sequence that may allow the localization of the enzyme into the chloroplasts.
The presence of a putative transit peptide in pea IGP dehydratase proprotein raises the prospect that the enzyme may be localized in the chloroplasts.
Possible influence of [delta]-aminolevulinic acid dehydratase polymorphism and susceptibility to renal toxicity of lead: a study of a Vietnamese population
We examined six newly identified polymorphisms in the [delta]-aminolevulinic acid dehydratase (ALAD) single-nucleotide polymorphisms (SNPs) to determine if these SNPs could modify the relationship between blood lead (PbB) and some renal parameters.
This is a cross-sectional study of 276 lead-exposed workers in Vietnam.
InterPro: IPR001533 Transcriptional coactivator/pterin dehydratase(Site not responding. Last check: 2007-10-24)
DCoH is the dimerization cofactor of hepatocyte nuclear factor 1 (HNF-1) that functions as both a transcriptional coactivator and a pterin dehydratase [ 1 ].
=ALA Syntase=======================================================================(Site not responding. Last check: 2007-10-24)
A query for ALA dehydratase (Section II/ B. Biosynthesis of Porphobilinogen) addressed to the Various protein databases listed in the Biology Workbench, yielded 30 unique records which are depicted under Sequenced ALA Dehydratases.
Click on Sequences to view the various ALA Dehydratase sequences retrieved from various protein sequence databases by the Biology Workbench.
Click on Sequence Similarity Search to view the Blast soybean ALA Dehydratase sequence similarity search results from the Biology workbench.
Cj0316, pheA, probable chorismate mutase\prephenate dehydratase, len: 357 aa; similar to many e.g.
PHEA_ECOLI chorismate mutase (EC 5.4.99.5) \ prephenate dehydratase (EC 4.2.1.51) (386 aa), fasta scores; opt: 482 z-score: 733.8 E(): 0, 33.1% identity in 366 aa overlap.
Contains PS00857 and PS00858 Prephenate dehydratase signatures 1 and 2, and Pfam match to entry PF00800 PDT, Prephenate dehydratase, score 268.20, E-value 1.1e-76
EC 4.3.1.19(Site not responding. Last check: 2007-10-24)
The enzyme from a number of sources also acts on
The reaction catalysed probably involves initial elimination of water (hence the enzyme's original classification as EC 4.2.1.16, threonine dehydratase), followed by isomerization and hydrolysis of the product with C-N bond breakage.
Cohn, M.S. and Phillips, A.T. Purification and characterization of a B6-independent threonine dehydratase from Pseudomonas putida.
NMA1772, hisB, imidazoleglycerol-phosphate dehydratase, len: 305aa; C-terminal similar to many eg.
SW:P06987 (HIS7_ECOLI) hisB, imidazoleglycerol-phosphate dehydratase from Escherichia coli (355 aa) fasta scores; E(): 0, 49.7% identity in 195 aa overlap.
Contains Pfam match to entry PF00475 IGPD, Imidazoleglycerol-phosphate dehydratase; Prosite match to PS00954 Imidazoleglycerol-phosphate dehydratase signature 1 and Prosite match to PS00955 Imidazoleglycerol-phosphate dehydratase signature 2.