Component of the replication protein A complex (RPA) required for DNA recombination, repair and replication. The activity of RPA is mediated by single-stranded DNA binding and protein interactions (By similarity). Heterotrimer of RPA1, RPA2 and RPA3 (canonical replication protein A complex) (By similarity). Interacts with RPA1A, RPA1B and RPA3. Expressed in root tips, roots, shoot apical meristem (SAM), young leaves, flag leaves and ears, and at lower levels in mature leaves. Repressed by sucrose starvation (PubMed:11470540). Induced by gamma irradiation (PubMed:25124817). Phosphorylated in a cell-cycle-dependent manner (from the S phase until mitosis). In response to DNA damage, recruited to DNA-repair nuclear foci, as a hypophosphorylated form (By similarity). Belongs to the replication factor A protein 2 family. Truncated N-terminus.