Reverse transcriptase mutants and uses thereof

MMLV reverse transcriptase mutants with targeted amino acid substitutions address secondary structure interference and temperature-related activity issues, enhancing cDNA synthesis efficiency and thermostability for applications like PCR and prime editing.

WO2026143009A1 Publication Date: 2026-07-02INTEGRATED DNA TECHNOLOGIES INC
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Patent Information

Application Number
PCT/US2025/060916
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-12-27
Filing Date
2025-12-22
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

MMLV reverse transcriptase enzymes face challenges with secondary structure interference in RNA templates and reduced activity at elevated temperatures, leading to impaired cDNA synthesis, especially in applications requiring thermostability and reduced RNase H activity.

Method used

Development of mutant variants of MMLV reverse transcriptase with specific amino acid substitutions at key positions, enhancing thermostability and activity, allowing efficient cDNA synthesis even at elevated temperatures and reducing RNA degradation.

Benefits of technology

The mutant variants demonstrate improved activity and thermostability, enabling effective cDNA synthesis for applications such as PCR and prime editing, with reduced error rates and enhanced performance in high-temperature conditions.

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Abstract

The present disclosure provides Moloney murine leukemia virus (MMLV) reverse transcriptase (RTase) variants. The present disclosure further provides amino acid positions for mutagenesis of MMLV RTase as well as nucleic acids, kits, compositions, fusion proteins, and methods including MMLV RTase variants.
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