Rabbit anti-Human KAT7 Polyclonal Antibody

Uniprot Id

O95251

Target Species

Human

Target Name

KAT7

Target Full Name

Histone acetyltransferase KAT7

Target Function

Catalytic subunit of histone acetyltransferase HBO1 complexes, which specifically mediate acetylation of histone H3 at 'Lys-14' (H3K14ac), thereby regulating various processes, such as gene transcription, protein ubiquitination, immune regulation, stem cell pluripotent and self-renewal maintenance and embryonic development. Some complexes also catalyze acetylation of histone H4 at 'Lys-5', 'Lys-8' and 'Lys-12' (H4K5ac, H4K8ac and H4K12ac, respectively), regulating DNA replication initiation, regulating DNA replication initiation. Specificity of the HBO1 complexes is determined by the scaffold subunit: complexes containing BRPF scaffold (BRPF1, BRD1/BRPF2 or BRPF3) direct KAT7/HBO1 specificity towards H3K14ac, while complexes containing JADE (JADE1, JADE2 and JADE3) scaffold direct KAT7/HBO1 specificity towards histone H4. H3K14ac promotes transcriptional elongation by facilitating the processivity of RNA polymerase II. Acts as a key regulator of hematopoiesis by forming a complex with BRD1/BRPF2, directing KAT7/HBO1 specificity towards H3K14ac and promoting erythroid differentiation. H3K14ac is also required for T-cell development. KAT7/HBO1-mediated acetylation facilitates two consecutive steps, licensing and activation, in DNA replication initiation: H3K14ac facilitates the activation of replication origins, and histone H4 acetylation (H4K5ac, H4K8ac and H4K12ac) facilitates chromatin loading of MCM complexes, promoting DNA replication licensing. Acts as a positive regulator of centromeric CENPA assembly: recruited to centromeres and mediates histone acetylation, thereby preventing centromere inactivation mediated by SUV39H1, possibly by increasing histone turnover/exchange. Involved in nucleotide excision repair: phosphorylation by ATR in response to ultraviolet irradiation promotes its localization to DNA damage sites, where it mediates histone acetylation to facilitate recruitment of XPC at the damaged DNA sites. Acts as an inhibitor of NF-kappa-B independently of its histone acetyltransferase activity.; Plays a central role in the maintenance of leukemia stem cells in acute myeloid leukemia (AML). Acts by mediating acetylation of histone H3 at 'Lys-14' (H3K14ac), thereby facilitating the processivity of RNA polymerase II to maintain the high expression of key genes, such as HOXA9 and HOXA10 that help to sustain the functional properties of leukemia stem cells.

Target Subcellular Location

Nucleus. Chromosome. Chromosome, centromere. Cytoplasm, cytosol.

Target Protein Families

MYST (SAS/MOZ) family

Target Tissue Specificity

Ubiquitously expressed, with highest levels in testis.

Target Research Area

Transcription

Target Synonyms

Hbo 1; HBO1; HBOa; Histone acetyltransferase binding to hORC1; Histone acetyltransferase binding to ORC1; Histone acetyltransferase KAT7; Histone acetyltransferase MYST2; K(lysine) acetyltransferase 7; KAT 7; KAT7; Lysine acetyltransferase 7; MOZ; MOZ YBF2/SAS3 SAS2 and TIP60 protein; MOZ, YBF2/SAS3, SAS2 and TIP60 protein 2; MYST 2; MYST histone acetyltransferase 2; MYST protein 2; MYST-2; MYST2; MYST2_HUMAN; SAS 2; SAS2 and TIP60 protein 2; TIP60 protein 2; YBF2/SAS3; ZC2HC7

Target Background

The protein encoded by this gene is part of the multimeric HBO1 complex, which possesses histone H4-specific acetyltransferase activity. This activity is required for functional replication origins and is involved in transcriptional activation of some genes. In both cases, the acetylation of histone H4 helps unfold chromatin so that the DNA can be accessed and replicated or transcribed.