Protein function
Encodes an acetyltransferase mainly involved in the acetylation of histone H4K5.
Phenotype
Overexpressor: HAM1 overexpressor is late flowering under both SD and LD conditions.
[Xiao et al., 2013] Multiple mutant: ham1;
ham2 heterozygous double mutant is early flowering under LD conditions. ( No data under SD conditions.)
[Xiao et al., 2013] Remarks: ham1;
ham2 homozygous double mutant is lethal.
[Latrasse et al., 2008] Artificial microRNA: Artificial microRNA downregulation of both
HAM1 and
HAM2 leads to early flowering under both SD and LD conditions
[Xiao et al., 2013] Function:Histone acetyltransferase which may be involved in transcriptional activation. Acetylates Lys-5 of histone H4 (H4K5ac) (PubMed:17877703, PubMed:19040736, PubMed:22170978, PubMed:23273925). Essential for gametophyte development (PubMed:19040736). Involved in DNA repair after UV-B exposure (PubMed:22170978). Negative regulator of flowering controlling the H4K5ac levels in the FLC chromatin (PubMed:23273925).
[Data from UniProt]
Regulators, targets and interactors
Downstream actors
Upstream actors
Protein-protein interactions