PMID- 15449938 OWN - NLM STAT- MEDLINE DCOM- 20041115 LR - 20171116 IS - 0006-2960 (Print) IS - 0006-2960 (Linking) VI - 43 IP - 39 DP - 2004 Oct 5 TI - Mutation of a lysine residue in a homeodomain generates dominant negative thyroid transcription factor 1. PG - 12489-97 AB - Thyroid transcription factor 1 (TTF-1) is a 42 kDa homeodomain (HD) containing the tissue-specific transcription factor of Nkx2 family members (also termed TEBP and Nkx2.1). TTF-1 is an essential transcription factor required for lung development and lung-specific gene expression. Transgenic mice carrying TTF-1 DNA-binding site mutations completely abolish expression of the human surfactant protein B (hSP-B) 1.5 kb lacZ reporter gene in the lung in vivo. Acetylation of transcription factors by nuclear receptor coactivators is an important mechanism for gene regulation. TTF-1 is acetylated by nuclear receptor coactivators including the activator of the thyroid and retinoic acid receptor, CREB-binding protein, and steroid receptor coactivator 1 (SRC-1) in cell transfection and immunoprecipitation studies. A glutathionine transferase pull-down assay shows TTF-1 direct interaction with the SRC-1 histone acetyltransferase domain. Site-specific mutagenesis identifies that the lysine residue at position 182 in the TTF-1 HD is acetylated in respiratory epithelial cells. Mutation at this acetylation site shows a dominant negative effect on SP-B gene transcription. The study supports a concept that acetylation is an important mechanism for TTF-1 activity. FAU - Yang, Li AU - Yang L AD - Division of Pulmonary Biology, Children's Hospital Medical Center and Department of Pediatrics, The University of Cincinnati College of Medicine, Cincinnati, Ohio 45229-3039, USA. FAU - Yan, Dong AU - Yan D FAU - Bruggeman, Molly AU - Bruggeman M FAU - Du, Hong AU - Du H FAU - Yan, Cong AU - Yan C LA - eng GR - R01 HL061803/HL/NHLBI NIH HHS/United States GR - R01 HL067862/HL/NHLBI NIH HHS/United States GR - HL-061803/HL/NHLBI NIH HHS/United States GR - HL-067862/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Biochemistry JT - Biochemistry JID - 0370623 RN - 0 (DNA-Binding Proteins) RN - 0 (Homeodomain Proteins) RN - 0 (NKX2-1 protein, human) RN - 0 (Nkx2-1 protein, mouse) RN - 0 (Nuclear Proteins) RN - 0 (Pulmonary Surfactant-Associated Protein B) RN - 0 (Thyroid Nuclear Factor 1) RN - 0 (Transcription Factors) RN - EC 1.13.12.- (Luciferases) RN - EC 2.3.1.- (Acetyltransferases) RN - EC 2.3.1.48 (Histone Acetyltransferases) RN - EC 2.3.1.48 (NCOA1 protein, human) RN - EC 2.3.1.48 (Ncoa1 protein, mouse) RN - EC 2.3.1.48 (Nuclear Receptor Coactivator 1) RN - K3Z4F929H6 (Lysine) SB - IM MH - Acetylation MH - Acetyltransferases/metabolism MH - Amino Acid Sequence MH - Animals MH - Binding Sites/genetics MH - Cell Line, Tumor MH - DNA-Binding Proteins/genetics/metabolism MH - Enhancer Elements, Genetic/genetics MH - Gene Expression Regulation/genetics MH - Gene Silencing MH - Genes, Reporter MH - Histone Acetyltransferases MH - Homeodomain Proteins/*genetics/*metabolism MH - Humans MH - Lac Operon MH - Luciferases/antagonists & inhibitors/genetics/metabolism MH - Lysine/*genetics/metabolism MH - Mice MH - Mice, Transgenic MH - Molecular Sequence Data MH - Nuclear Proteins/antagonists & inhibitors/*genetics/*metabolism MH - Nuclear Receptor Coactivator 1 MH - *Point Mutation MH - Pulmonary Alveoli/cytology/metabolism MH - Pulmonary Surfactant-Associated Protein B/antagonists & inhibitors/biosynthesis/genetics MH - Respiratory Mucosa/cytology/metabolism MH - Sequence Deletion MH - Thyroid Nuclear Factor 1 MH - Transcription Factors/antagonists & inhibitors/*genetics/*metabolism EDAT- 2004/09/29 05:00 MHDA- 2004/11/16 09:00 CRDT- 2004/09/29 05:00 PHST- 2004/09/29 05:00 [pubmed] PHST- 2004/11/16 09:00 [medline] PHST- 2004/09/29 05:00 [entrez] AID - 10.1021/bi049283o [doi] PST - ppublish SO - Biochemistry. 2004 Oct 5;43(39):12489-97. doi: 10.1021/bi049283o.