ISDA

Entry Detail

PDB ID:

1R6G

Keywords:

HORMONE/GROWTH FACTOR RECEPTOR

Title:

Crystal structure of the thyroid hormone receptor beta ligand binding domain in complex with a beta selective compound

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli BL21(DE3)

PDB Version:

Deposition Date:

2003-10-15

Release Date:

2005-02-15

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.00 Å

R-Value Free:

0.34

R-Value Work:

0.26

R-Value Observed:

0.26

Space Group:

P 31 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Thyroid hormone receptor beta-1
Chain IDs:A
Chain Length:259
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P10828 Pfam ID:PF00104

Ligand Molecules

442

Primary Citation

Thyroid receptor ligands. Part 2: Thyromimetics with improved selectivity for the thyroid hormone receptor beta.

Hangeland, J.J, Doweyko, A.M, Dejneka, T, Friends, T.J, Devasthale, P, Mellstrom, K, Sandberg, J, Grynfarb, M, Sack, J.S, Einspahr, H, Farnegardh, M, Husman, B, Ljunggren, J, Koehler, K, Sheppard, C, Malm, J, Ryono, D.E.Show

Bioorg.Med.Chem.Lett. 14 3549 3553 (2004)

PMID: 15177471 DOI: 10.1016/j.bmcl.2004.04.032

Abstact

A set of thyromimetics having improved selectivity for TR-beta1 were prepared by replacing the 3'-isopropyl group of 2 and 3 with substituents having increased steric bulk. From this limited SAR study, the most potent and selective compounds identified were derived from 2 and contained a 3'-phenyl moiety bearing small hydrophobic groups meta to the biphenyl link. X-ray crystal data of 15c complexed with TR-beta1 LBD shows methionine 442 to be displaced by the bulky R3' phenyl ethyl amide side chain. Movement of this amino acid side chain provides an expanded pocket for the bulky side chain while the ligand-receptor complex retains full agonist activity.

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