該基因編碼一種參與dna氧化損傷修復的dna糖苷酶。這種酶在腺嘌呤與鳥嘌呤、胞嘧啶或8-氧-7,8-二氫鳥嘌呤（一種主要的氧化損傷的DNA損傷）不適當配對的部位從DNA主干上切除腺嘌呤堿。蛋白質定位于細胞核和線粒體。這種基因產物被認為通過在氧化損傷后引入單鏈斷裂而在細胞凋亡信號中發揮作用。該基因突變導致結直腸癌的遺傳易感性，稱為mutyh相關息肉病（map）。已發現該基因編碼不同亞型的多個轉錄變體。[由RefSeq提供，2017年4月]
This gene encodes a DNA glycosylase involved in oxidative DNA damage repair. The enzyme excises adenine bases from the DNA backbone at sites where adenine is inappropriately paired with guanine, cytosine, or 8-oxo-7,8-dihydroguanine, a major oxidatively damaged DNA lesion. The protein is localized to the nucleus and mitochondria. This gene product is thought to play a role in signaling apoptosis by the introduction of single-strand breaks following oxidative damage. Mutations in this gene result in heritable predisposition to colorectal cancer, termed MUTYH-associated polyposis (MAP). Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2017]