Cytokine-like nuclear factor with chromatin gene reader activity involved in chromatin modification and regulation of gene expression. Acts as a nucleosome-destabilizing factor that is recruited to genes during transcriptional activation. Recognizes and binds histone H3 without a preference for specific epigenetic markers and also binds DNA. Interacts with KDM1B and promotes its histone demethylase activity by facilitating the capture of H3 tails, they form a multifunctional enzyme complex that modifies transcribed chromatin and facilitates Pol II transcription through nucleosomes. Stimulates the acetylation of 'Lys-56' of nucleosomal histone H3 (H3K56ac) by EP300. With GATA4, co-binds a defined set of heart development genes and coregulates their expression during cardiomyocyte differentiation. Regulates p38 MAP kinase activity by mediating stress activation of MAPK14/p38alpha and specifically regulating MAPK14 signaling. Indirectly promotes phosphorylation of MAPK14 and activation of ATF2. The phosphorylation of MAPK14 requires upstream activity of MAP2K4 and MAP2K6. Homotetramere. Interacts with MAPK14. Interacts with KDM1B at nucleosomes; this interaction stimulates H3K4me1 and H3K4me2 demethylation. Binds to mononucleosomes. Interacts with GATA4; the interaction is required for a synergistic activation of GATA4 target genes transcription. Found in actively RNAPolII-transcribed gene bodies. The PWWP domain probably mediates the binding to H3K36me3. The A.T hook DNA-binding domain is required for the interaction with MAPK14. The PWWP domain is a H3 reader and strongly binds DNA. In the dehydrogenase domain, the conserved NAD(P)H-binding sites and sequence similarity to plant dehydrogenases suggest that this protein may have oxidoreductase activity. However, since the active site is not conserved, the dehydrogenase domain seems to serve as a catalytically inert oligomerization module. Belongs to the HIBADH-related family. NP60 subfamily.