کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5591905 | 1570703 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A disulfide-stabilized human VL single-domain antibody library is a source of soluble and highly thermostable binders
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شناسی مولکولی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We have previously shown that incorporation of a second intradomain disulfide linkage into camelid VHH and human VH/VL single-domain antibodies confers increased thermostability. Here, we explored the effects of introducing an additional disulfide linkage, formed between Cys48 and Cys64 (Kabat numbering), into a phage-displayed synthetic human VL library. In comparison to an identical library bearing only the highly conserved Cys23-Cys88 disulfide linkage, the disulfide-stabilized VL library tolerated a similar degree of randomization but retained a higher level of functional diversity after selection with protein L. Both libraries yielded soluble, antigen-specific VLs that recognized a model antigen (maltose-binding protein) with similar affinities, in the micromolar range; however, the disulfide-stabilized antigen-specific VLs were much more thermostable (average ÎTm â¼10 °C) than non-disulfide-stabilized VLs. This work provides proof-of-concept for building synthetic antibody libraries using disulfide-constrained immunoglobulin domains, thus avoiding pitfalls of post-hoc disulfide linkage engineering such as impaired antigen binding and reduced expression yield.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular Immunology - Volume 90, October 2017, Pages 190-196
Journal: Molecular Immunology - Volume 90, October 2017, Pages 190-196
نویسندگان
Kevin A. Henry, Hiba Kandalaft, Michael J. Lowden, Martin A. Rossotti, Henk van Faassen, Greg Hussack, Yves Durocher, Dae Young Kim, Jamshid Tanha,