Component of histone acetyltransferase complex responsible for the majority of histone H4 acetylation at 'Lys-17' which is implicated in the formation of higher-order chromatin. structure (By similarity). Greatly enhances MSL2 E3 ubiquitin ligase activity, promoting monoubiquitination of histone H2B at 'Lys-35' (H2BK34Ub). This modification in turn stimulates histone H3 methylation at 'Lys-5' (H3K4me) and 'Lys-80' (H3K79me) and leads to gene activation, including that of HOXA9 and MEIS1. In the MSL complex, acts as a scaffold to tether MSL3 and KAT8 together for enzymatic activity regulation.

Belongs to the msl-1 family.

616 amino acids

MTMRSAVFKAAAAPAGGNPEQRLDYERAAALGGPEDESGAAEAHFLPRHRKLKEPGPPLASSQGGSPSPSPAGCGGGKGRGLLLPAGAAPGQQEESWGGSVPLPCPPPATKQAGIGGEPVAAGAGCSPRPKYQAVLPIQTGSIVVAAAKEPTPWAGDKGGAAPPAATASDPAGPPPLPLPGPPPLAPTATAGTLAASEGRWKSIRKSPLGGGGGSGASSQAACLKQILLLQLDLIEQQQQQLQAKEKEIEELKSERDTLLARIERMERRMQLVKRDNEKERHKLLQGYEPEEREEAELSEKIKLERQPELCETSQALPSKPFSCGRSGKGHKRKTPFGNTERKTPVKKLAPEFSKVKTKTPKHSPIKEEPCGSISETVCKRELRSQETPEKPRSSVDTPPRLSTPQKGPSTHPKEKAFSSEMEDLPYLSTTEMYLCRWHQPPPSPLPLRESSPKKEETVARCLMPSSVAGETSVLAVPSWRDHSVEPLRDPNPSDILENLDDSVFSKRHAKLELDEKRRKRWDIQRIREQRILQRLQLRMYKKKGIQESEPEVTSFFPEPDDVESLLITPFLPVVAFGRPLPKLAPQNFELPWLDERSRCRLEIQKKHTPHRTCRK

67.3 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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