Histone acetyltransferase type B catalytic subunit (HAT1) is the catalytic subunit of the histone acetylase B (HAT-B) complex (composed on HAT1 and HAT2 at least) [1-4]. It is involved in different biological processes including cell progression, glucose metabolism, histone production or DNA damage repair. HAT1 acetylates histone H4 at Lys-5 and Lys-12, and to a lesser extend, Lys-5 in histone H2A [3,4]. The C-terminal domain of HAT1 is highly variable and not required for HAT activity [4]. It consists of a bundle of helices and a short beta-strand. This entry includes HAT1 from animals.

1: HAT1 Coordinates Histone Production and Acetylation via H4 Promoter Binding. Gruber JJ, Geller B, Lipchik AM, Chen J, Salahudeen AA, Ram AN, Ford JM, Kuo CJ, Snyder MP; Mol Cell. 2019;75:711-724. PMID:31278053

2: Hat1-Dependent Lysine Acetylation Targets Diverse Cellular Functions. Agudelo Garcia PA, Nagarajan P, Parthun MR; J Proteome Res. 2020;19:1663-1673. PMID:32081014

3: Structure of the histone acetyltransferase Hat1: a paradigm for the GCN5-related N-acetyltransferase superfamily. Dutnall RN, Tafrov ST, Sternglanz R, Ramakrishnan V; Cell. 1998;94:427-438. PMID:9727486

4: Structural basis for substrate specificity and catalysis of human histone acetyltransferase 1. Wu H, Moshkina N, Min J, Zeng H, Joshua J, Zhou MM, Plotnikov AN; Proc Natl Acad Sci U S A. 2012;109:8925-8930. PMID:22615379