Homodimer and homotetramer. Interacts with CREBBP. Interacts preferentially with histone H3 that is not methylated at 'Lys-4'. Binds with lower affinity to histone H3 that is monomethylated at 'Lys-4'. Trimethylation of histone H3 at 'Lys-4' or phosphorylation at 'Thr-3' abolish the interaction. Binds with lower affinity to histone H3 that is acetylated at 'Lys-4', or that is acetylated at 'Lys-9' or trimethylated at 'Lys-9'. Binds histone H3 that is dimethylated at 'Arg-2' with very low affinity.
Function:
Transcriptional regulator that binds to DNA as a dimer or as a tetramer, but not as a monomer. Binds to G-doublets in an A/T-rich environment; the preferred motif is a tandem repeat of 5'-. ATTGGTTA-3' combined with a 5'-TTATTA-3' box. Binds to nucleosomes (By similarity). Binds to chromatin and interacts selectively with histone H3 that is not methylated at 'Lys-4', not phosphorylated at 'Thr-3' and not methylated at 'Arg-2'. Functions as a sensor of histone H3 modifications that are important for the epigenetic regulation of gene expression. Functions as a transcriptional activator and promotes the expression of otherwise tissue-specific self-antigens in the thymus, which is important for self tolerance and the avoidance of autoimmune reactions.
Subcellular Location:
Nucleus
Cytoplasm
Associated with tubular structures and in discrete nuclear dots resembling ND10 nuclear bodies. May shuttle between nucleus and cytoplasm.
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Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA / MRNA] (ISOFORMS 1; 2 AND 3);VARIANT APS1 GLU-83
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Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA / MRNA] (ISOFORM 1)
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Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 4)
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Cited for: PARTIAL PROTEIN SEQUENCE;SUBUNIT STRUCTURE;DNA-BINDING;PHOSPHORYLATION
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Cited for: SUBCELLULAR LOCATION;VARIANTS APS1 LEU-80; CYS-85; TYR-311 AND GLN-326
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Cited for: SUBCELLULAR LOCATION;FUNCTION;MUTAGENESIS OF CYS-302 AND CYS-437;CHARACTERIZATION OF VARIANT APS1 PRO-28
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Cited for: SUBCELLULAR LOCATION;HOMOOLIGOMERIZATION;CHARACTERIZATION OF VARIANTS APS1 LEU-15; MET-16; VAL-21; PRO-28; PRO-29; ARG-78; LEU-80; GLU-83; CYS-90; ARG-93; TRP-228 AND GLN-326
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Cited for: INTERACTION WITH HISTONE H3 NON-METHYLATED OR MONO-METHYLATED AT LYS-4;FUNCTION;MUTAGENESIS OF ASP-297 AND ASP-312;CHARACTERIZATION OF VARIANTS APS1 MET-301 AND TYR-311
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Cited for: STRUCTURE BY NMR OF 293-354 IN COMPLEX WITH ZINC IONS;CHARACTERIZATION OF VARIANTS APS1 MET-301; TYR-311 AND GLN-326
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Cited for: STRUCTURE BY NMR OF 293-354 IN COMPLEX WITH ZINC IONS AND UNMETHYLATED HISTONE H3 N-TERMINUS;IDENTIFICATION BY MASS SPECTROMETRY;MUTAGENESIS OF ASN-295; GLU-298; ARG-303; ASP-304 AND GLU-307;INTERACTION WITH HISTOME H3
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Cited for: STRUCTURE BY NMR OF 294-347 IN COMPLEX WITH ZINC IONS AND UNMETHYLATED HISTONE H3 N-TERMINUS;CHARACTERIZATION OF VARIANTS APS1 MET-301; TYR-311; LEU-326 AND GLN-326
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Cited for: VARIANTS APS1 LEU-15; MET-16; PRO-28; PR0-29; ARG-78; LEU-80; GLU-83; CYS-85; CYS-90; ARG-93; MET-301; TYR-311 AND GLN-326;VARIANT ARG-278
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Cited for: VARIANTS APS1 22-VAL-ASP-23 DEL; SER-77 AND ARG-78;CHARACTERIZATION OF VARIANTS APS1 LEU-15; MET-16; 22-VAL-ASP-23 DEL; SER-77 AND ARG-78