{"title":"Generation of a CDR H3 Randomized Monoclonal Antibody Library by Kunkel Mutagenesis.","authors":"Jia Xuan Yeoh, Yee Siew Choong, Theam Soon Lim","doi":"10.1007/978-1-0716-5249-7_4","DOIUrl":null,"url":null,"abstract":"<p><p>Complementary-determining regions (CDRs) are the primary factor that determines antibody diversity, while CDR H3 plays a central role in antigen binding. Randomization of this loop within a stable framework provides a powerful strategy for generating synthetic antibody libraries. This chapter outlines an approach that is Kunkel mutagenesis based, for constructing a monoclonal antibody library diversified at CDR H3. The method uses uracilated single-stranded DNA templates and degenerate oligonucleotides to introduce targeted variability while suppressing nonrecombinant background through strategically placed stop codons and restriction sites. The resulting repertoire is directly compatible with phage display for downstream selection. This streamlined protocol enables the generation of antibody libraries suitable for applications in affinity maturation, binder discovery, and antibody development.</p>","PeriodicalId":18490,"journal":{"name":"Methods in molecular biology","volume":"3030 ","pages":"55-71"},"PeriodicalIF":0.0000,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Methods in molecular biology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/978-1-0716-5249-7_4","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Biochemistry, Genetics and Molecular Biology","Score":null,"Total":0}
引用次数: 0
Abstract
Complementary-determining regions (CDRs) are the primary factor that determines antibody diversity, while CDR H3 plays a central role in antigen binding. Randomization of this loop within a stable framework provides a powerful strategy for generating synthetic antibody libraries. This chapter outlines an approach that is Kunkel mutagenesis based, for constructing a monoclonal antibody library diversified at CDR H3. The method uses uracilated single-stranded DNA templates and degenerate oligonucleotides to introduce targeted variability while suppressing nonrecombinant background through strategically placed stop codons and restriction sites. The resulting repertoire is directly compatible with phage display for downstream selection. This streamlined protocol enables the generation of antibody libraries suitable for applications in affinity maturation, binder discovery, and antibody development.
期刊介绍：
For over 20 years, biological scientists have come to rely on the research protocols and methodologies in the critically acclaimed Methods in Molecular Biology series. The series was the first to introduce the step-by-step protocols approach that has become the standard in all biomedical protocol publishing. Each protocol is provided in readily-reproducible step-by-step fashion, opening with an introductory overview, a list of the materials and reagents needed to complete the experiment, and followed by a detailed procedure that is supported with a helpful notes section offering tips and tricks of the trade as well as troubleshooting advice.
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