This target displays homology in the following species: Cow: 90%; Guinea Pig: 90%; Horse: 90%; Human: 90%; Mouse: 100%; Rat: 90%
Thyroid hormone receptors (TR), also known as c-erbA-2, are ligand-dependent, intracellular proteins that stimulate transcription of specific genes by binding to specific DNA sequences called hormone response elements following activation by the appropriate hormone. Thyroid hormones, through their interaction with TR, effect metabolic processes, growth and development in many tissues by regulating the expression of genes for growth hormone, malic enzyme and several hepatic proteins. There are two forms of TR; TR alpha (on chromosome 17) and TR beta (on chromosome 3). Each of these isoforms also has two isoforms; TR alpha-1 and TRv alpha-2, and TR beta-1 and TR beta-2 respectively. TR alpha-1 and 2 are identical through amino acid 370 where their sequences diverge. TRv alpha-2, which does not bind T3 and is a strong negative regulator of the functional TR, is 80 amino acids longer than TR alpha-1.
The corresponding gene for the thyroid hormone receptor beta-1 is NR1A2.
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Protein Aliases: avian erythroblastic leukemia viral (v-erb-a) oncogene homolog 2; c-erbA-2; c-erbA-beta; ERBA-BETA; ERBA2; generalized resistance to thyroid hormone; GRTH; MGC126109; MGC126110; NR1A2; Nuclear receptor subfamily 1 group A member 2; oncogene ERBA2; THR1; THRB; THRB1; THRB2; thyroid hormone nuclear receptor beta variant 1; Thyroid hormone receptor beta; thyroid hormone receptor beta 1; thyroid hormone receptor beta 3; thyroid hormone receptor beta2delta; thyroid hormone receptor, beta; thyroid hormone receptor, beta (avian erythroblastic leukemia viral (v-erb-a) oncogene homolog 2); thyroid hormone receptor, beta (erythroblastic leukemia viral (v-erb-a) oncogene homolog 2, avian); TR beta; TRbeta2Delta
Gene Aliases: C-ERBA-2; C-ERBA-BETA; c-erbAbeta; ERBA2; GRTH; NR1A2; PRTH; RATT3REC; T3R[b]; T3Rbeta; T3rec; THR1; THRB; THRB1; THRB2; TRbeta