Required for DNA recombination, repair and replication. The activity of RP-A is mediated by single-stranded DNA binding and protein interactions. Required for the efficient recruitment of the DNA double-strand break repair factor RAD51 to chromatin in response to DNA damage. Heterotrimer of 70, 32 and 14 kDa chains (canonical replication protein A complex). Component of the alternative replication protein A complex (aRPA) composed of RPA1, RPA3 and RPA4. The DNA-binding activity may reside exclusively on the 70 kDa subunit. Binds to SERTAD3/RBT1. Interacts with TIPIN. Directly interacts with PPP4R2, but not with SMEK2; this interaction is DNA damage-dependent and leads RPA2 dephosphorylation by PPP4C recruitment. Interacts with RAD51, preferentially when hyperphosphorylated. Directly interacts with RFWD3. 3 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: DNA replication
Chromosomal Location of Human Ortholog: 1p35
Cellular Component: nucleoplasm; PML body; chromosome, telomeric region; DNA replication factor A complex; nucleus
Molecular Function: protein binding; enzyme binding; ubiquitin protein ligase binding; damaged DNA binding; protein N-terminus binding; protein phosphatase binding; single-stranded DNA binding
Biological Process: G1 DNA damage checkpoint; mismatch repair; DNA strand elongation during DNA replication; DNA repair; double-strand break repair via homologous recombination; telomere maintenance via semi-conservative replication; DNA recombinase assembly; nucleotide-excision repair; base-excision repair; double-strand break repair; transcription-coupled nucleotide-excision repair; telomere maintenance via recombination; nucleotide-excision repair, DNA damage removal; mitotic cell cycle; nucleotide-excision repair, DNA gap filling; DNA replication; telomere maintenance; G1/S transition of mitotic cell cycle
Alt. Names/Synonyms: REPA2; Replication factor A protein 2; Replication protein A 32 kDa subunit; Replication protein A 34 kDa subunit; replication protein A2, 32kDa; RF-A protein 2; RFA2; RP-A p32; RP-A p34; RPA2; RPA32; RPA34
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.