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I8250

Sigma-Aldrich

3-Iodo-L-tyrosine

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Synonym(s):
3-Monoiodo-L-tyrosine
Linear Formula:
IC6H3-4-(OH)CH2CH(NH2)CO2H
CAS Number:
Molecular Weight:
307.09
Beilstein:
2941266
EC Number:
MDL number:
UNSPSC Code:
12352200
eCl@ss:
32160406
PubChem Substance ID:
NACRES:
NA.32

Quality Level

impurities

~5% tyrosine

mp

210 °C (dec.) (lit.)

solubility

dilute aqueous acid: soluble

storage temp.

−20°C

SMILES string

N[C@@H](Cc1ccc(O)c(I)c1)C(O)=O

InChI

1S/C9H10INO3/c10-6-3-5(1-2-8(6)12)4-7(11)9(13)14/h1-3,7,12H,4,11H2,(H,13,14)/t7-/m0/s1

InChI key

UQTZMGFTRHFAAM-ZETCQYMHSA-N

Gene Information

human ... TH(7054)

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General description

Iodotyrosine coupled with di-iodotyrosine results in the synthesis of 3,5,3′-tri-iodothyronine (T3) or 3,3′,5′-tri-iodothyronine (rT3).

Application

3-Iodo-L-tyrosine has been used as an inhibitor for tyrosine hydroxylase enzyme in Drosophila and silkworm pupae.

Biochem/physiol Actions

3-iodotyrosine (3-IY) inhibits tyrosine hydroxylase that catalyzes levodopa (L-DOPA) formation from tyrosine. Iodotyrosine deiodinase enzyme deficiency leads to elevated levels of 3-IY in serum and urine in severe hypothyroidism and goiter.
TH (tyrosine 3-hydroxylase) is responsible for catalyzing the first step of the noradrenergic biosynthesis pathway. Mutations in TH are associated with tyrosine hydroxylase deficiency, leading to conditions such as infantile parkinsonism and DOPA (dopamine)-responsive dystonia as well as encephalopathy with perinatal onset.
Tyrosine hydroxylase inhibitor.

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Mutations in the iodotyrosine deiodinase gene and hypothyroidism
Moreno J, et al.
The New England Journal of Medicine, 358(17), 1811-1818 (2008)
A new brain dopamine-deficient Drosophila and its pharmacological and genetic rescue
Cichewicz K, et al.
Genes, Brain, and Behavior, 16(3), 394-403 (2017)
Dopamine and serotonin are both required for mate-copying in Drosophila melanogaster
Monier M, et al.
Frontiers in Behavioral Neuroscience, 12(3), 334-334 (2018)
Anionic iodotyrosine residues are required for iodothyronine synthesis
De Vijlder JJ and den Hartog MT
European Journal of Endocrinology, 138(2), 227-231 (1998)
Differential regulation of tyrosine hydroxylase in cuticular melanization and innate immunity in the silkworm Bombyx mori
Lee KS, et al.
Journal of Asia-Pacific Entomology, 18(4), 765-770 (2015)

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