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1.21.1.1: iodotyrosine deiodinase

This is an abbreviated version!
For detailed information about iodotyrosine deiodinase, go to the full flat file.

Word Map on EC 1.21.1.1

Reaction

3-iodo-L-tyrosine
+
NADP+
+
Iodide
=
3,5-diiodo-L-tyrosine
+
NADPH
+
H+

Synonyms

DEHAL1, Dehal1 protein, DEHAL1B, EC 1.22.1.1, iodotyrosine dehalogenase 1, iodotyrosine deiodinase, IYD, lyd, NADH oxidase/flavin reductase, SUP-18, SUP-18 IYD, TDH

ECTree

     1 Oxidoreductases
         1.21 Catalysing the reaction X-H + Y-H = X-Y
             1.21.1 With NAD+ or NADP+ as acceptor
                1.21.1.1 iodotyrosine deiodinase

Application

Application on EC 1.21.1.1 - iodotyrosine deiodinase

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APPLICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
diagnostics
improvement of pre-clinical detection of iodotyrosine deiodinase deficiency during the neonatal time
medicine
-
study on enzyme expression in thyroid pathology. The highest DEHAL1 mRNA levels are found in Graves' disease thyroids, while downregulation of DEHAL1 and DEHAL1B mRNA occurrs in papillary thyroid carcinomas and anaplastic thyroid carcinomas. DEHAL1 protein is overexpressed in toxic thyroid nodules and Graves' disease thyroids with predominant apical staining in all samples. A weaker and patchy staining pattern is found in benign cold thyroid nodules and normal thyroids. In differentiated thyroid cancers such as follicular thyroid carcinomas and papillary thyroid carcinomas, a diffuse cytoplasmic DEHAL1 expression is found. In partially differentiated thyroid cancers and anaplastic thyroid carcinomas, DEHAL1 expression is faint or absent
synthesis
high expression of a truncated derivative lacking the membrane domain, residues 2-33, at its N-terminal is observed in Sf9 cells, whereas expression in Pichia pastoris remains low despite codon optimization. The desired expression in Escherichia coli can be achieved after replacing the two conserved Cys residues of the deiodinase with Ala and fusing the resulting protein to thioredoxin. This construct provides abundant enzyme for crystallography and mutagenesis
additional information