The function of ENSG00000103037 (SETD6, SET domain containing 6, protein lysine methyltransferase) is as follows. Protein-lysine N-methyltransferase. Monomethylates 'Lys-310' of the RELA subunit of NF-kappa-B complex, leading to down-regulation of NF-kappa-B transcription factor activity (PubMed:21131967, PubMed:21515635, PubMed:30189201). Monomethylates 'Lys-8' of H2AZ (H2AZK8me1) (PubMed:23324626). Required for the maintenance of embryonic stem cell self-renewal (By similarity). Methylates PAK4. {ECO:0000250|UniProtKB:Q9CWY3, ECO:0000269|PubMed:21131967, ECO:0000269|PubMed:21515635, ECO:0000269|PubMed:23324626, ECO:0000269|PubMed:30189201}.