Probable chromatin-remodeling factor that is functionally redundant with CHR12 in root and shoot stem cell initiation and root apical meristem (RAM) and shoot apical meristem (SAM) maintenance. Can associate with the promoter region of WOX5 (PubMed:23062007). May promote seed maturation and repress initiation of germination (PubMed:24839909). May repress plant growth (PubMed:24666886). ATP + H2O = ADP + H(+) + phosphate Expressed in embryos, root apical meristem (RAM) and shoot apical meristem (SAM). No visible phenotype under normal growth conditions, but double mutant plants chr12 and chr23 are embryonic lethal. Belongs to the helicase family.