DNA polymerase lambda, also known as POLL, is a protein found in eukaryotes. In humans, it is encoded by the POLLA gene. POLL has 5-prime-deoxyribose-5-phosphate lyase activity and strand-displacement synthesis activity on gapped DNA substrates, suggesting that POLL participates in short- and long-patch base excision repair. POLL is widely expressed, with abundant expression in pachytene spermatocytes of testis and in ovary.