MedlinePlus Health Topics

Last uploaded: March 22, 2026
Id http://purl.bioontology.org/ontology/MEDLINEPLUS/C1418707
http://purl.bioontology.org/ontology/MEDLINEPLUS/C1418707
Preferred Name

polynucleotide kinase 3'-phosphatase

Definitions
The PNKP gene provides instructions for making the polynucleotide kinase-phosphatase (PNKP) enzyme. This enzyme is critical for repairing broken strands of DNA molecules. It can help fix damage that affects one DNA strand (single-strand breaks) or both strands (double-strand breaks). At the site of the damage, the PNKP enzyme modifies the broken ends of the DNA strands so that they can be joined back together.
Synonyms
Homo sapiens polynucleotide kinase 3'-phosphatase (PNKP)
MCSZ
DNA 5'-kinase/3'-phosphatase
bifunctional polynucleotide phosphatase/kinase
AOA4
PNKP
PNK
EIEE10
Type http://www.w3.org/2002/07/owl#Class
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