Nei endonuclease VIII-like 3 (E. coli) is a protein in humans that is encoded by the NEIL3 gene. [5]
NEIL3 belongs to a class of DNA glycosylases homologous to the bacterial Fpg/Nei family. These glycosylases initiate the first step in base excision repair by cleaving bases damaged by reactive oxygen species and introducing a DNA strand break via the associated lyase reaction. [6]
Spo11 is a protein that in humans is encoded by the SPO11 gene. Spo11, in a complex with mTopVIB, creates double strand breaks to initiate meiotic recombination. Its active site contains a tyrosine which ligates and dissociates with DNA to promote break formation. One Spo11 protein is involved per strand of DNA, thus two Spo11 proteins are involved in each double stranded break event.
DNA-(apurinic or apyrimidinic site) lyase is an enzyme that in humans is encoded by the APEX1 gene.
Cyclin-O is a protein that in humans is encoded by the CCNO gene.
Endonuclease III-like protein 1 is an enzyme that in humans is encoded by the NTHL1 gene.
Endonuclease VIII-like 1 is an enzyme that in humans is encoded by the NEIL1 gene.
Endonuclease VIII-like 2 is an enzyme that in humans is encoded by the NEIL2 gene.
AT-rich interactive domain-containing protein 3B is a protein that in humans is encoded by the ARID3B gene.
DNA polymerase mu is a polymerase enzyme found in eukaryotes. In humans, this protein is encoded by the POLM gene.
BRCA1-A complex subunit BRE is a protein that in humans is encoded by the BRE gene.
Crossover junction endonuclease EME1 is an enzyme that in humans is encoded by the EME1 gene. It forms a complex with MUS81 which resolves Holliday junctions. In mammalian cells the EME1/MUS81 protein complex is redundant for DNA damage repair with GEN1 endonuclease. In mice, EME1/MUS81 and GEN1 redundantly contribute to Holliday junction processing. When homozygous mutations of Gen1 and Eme1 were combined in mice the result was synthetic lethality at an early embryonic stage. Homozygosity for Gen1 mutations did not cause a DNA repair deficiency in mice. But when mice were both homozygous mutant for Gen1 and also heterozyous for an Emc1 mutation, they showed increased sensitivity to DNA damaging agents. This finding, indicated a redundant role of GEN1 and EME1 in DNA repair. Gen1 and Emc1 were also shown to have redundant roles in meiotic recombination.
Lys-63-specific deubiquitinase BRCC36 is an enzyme that in humans is encoded by the BRCC3 gene.
DNA2-like helicase is an enzyme that in humans is encoded by the DNA2 gene. Dna2, a homolog of DNA2KL present in budding yeast, possesses both helicase and nuclease activity, with which it helps catalyze early steps in homologous recombination.
SLX4 is a protein involved in DNA repair, where it has important roles in the final steps of homologous recombination. Mutations in the gene are associated with the disease Fanconi anemia.
Polymerase nu is a protein in humans that is encoded by the POLN gene. It is a family A DNA polymerase, considered to be the least effective of the polymerase enzymes. However, DNA polymerase nu plays an active role in homology repair during cellular responses to crosslinks, fulfilling its role in a complex with helicase.
SLX1 structure-specific endonuclease subunit homolog B is a protein in humans that is encoded by the SLX1B gene.
GEN1, Holliday junction 5' flap endonuclease is a protein that in humans is encoded by the GEN1 gene.
Exonuclease 5 is a protein that in humans is encoded by the EXO5 gene.
Cell cycle regulator of non-homologous end joining is a protein that in humans is encoded by the CYREN gene.
Endonuclease/exonuclease/phosphatase family domain containing 1 is a protein that in humans is encoded by the EEPD1 gene.
AlkB homolog 1, histone H2A dioxygenase is a protein that in humans is encoded by the ALKBH1 gene.