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2022 Fiscal Year Final Research Report

Algorithms that organisms search genes de novo

Research Project

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Project/Area Number 18H03335
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 62010:Life, health and medical informatics-related
Research InstitutionKyushu Institute of Technology

Principal Investigator

Yada Tetsushi  九州工業大学, 大学院情報工学研究院, 教授 (10322728)

Project Period (FY) 2018-04-01 – 2023-03-31
Keywords遺伝子のde novo誕生 / 生物の遺伝子探索アルゴリズム / バイオインフォマティクス解析
Outline of Final Research Achievements

De novo gene birth is the process that new genes arise from non-genic DNA sequences by accumulating mutations. Until recently, this process was thought to occur almost never, but advances in genome research have revealed that it is a far more common process. On the other hand, this process can be viewed as an organism's search for new gene sequences. Then, even the de novo birth of a short gene consisting of only 90 nucleotides would involve the exploration of a vast state space of more than 4 to the 90th power. Here, we revealed the full extent of the algorithm of the organism that efficiently searches for a number of genes from the vast state space by applying bioinformatics analysis of genome data.

Free Research Field

バイオインフォマティクス

Academic Significance and Societal Importance of the Research Achievements

出芽酵母に至る系統でのバイオインフォマティクス解析により、遺伝子のde novo誕生の典型的な過程、すなわち、GCに富む領域に中立な突然変異が蓄積することで、まず、候補遺伝子領域長が伸長し、次に、翻訳シグナル配列を獲得する、を明らかにした。そして、候補遺伝子領域長を伸長する中立な突然変異の数が翻訳シグナル配列を獲得するその数より多いことから、遺伝子のde novo誕生が機会的な過程であることを見いだした。また、自然言語処理の分野で発展した様々な技術を応用することで、遺伝子領域長に関係なく、それらのタンパク質コーディング性を推定するdeep learningモデルを初めて開発した。

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Published: 2024-01-30  

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