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Article type: Research Article
Authors: Burioni, Robertoa; * | Bugli, Francescab | Mancini, Nicasioa | Fadda, Giovannib
Affiliations: [a] Institute of Microbiology, Faculty of Medicine and Surgery, University of Ancona, I-60020 Ancona, Italy | [b] Institute of Microbiology, Catholic University, Largo Vito, 1, I-00168 Roma, Italy
Correspondence: [*] Corresponding author: Roberto Burioni, Servizio di Virologia, Istituto di Microbiologia, Facolt`a di Medicina e Chirurgia, Università di Ancona, Via Conca, 60020 ANCONA, Italy. Tel.: +39 335 8349277, +39 071 5964859; Fax: +39 071 5964852; E-mail: r.burioni@libero.it.
Abstract: Labeling of recombinant Fab molecules is an important yet cumbersome and time-consuming procedure that is needed in many immunological experimental designs. This work describes the development of a novel expression vector fusing to the carboxyterminal of the Fab heavy chain fragments a tag peptide (FLAG) that is consistently recognized by a mouse monoclonal antibody. The presence of the FLAG peptide does not alter the binding characteristics of the unmodified Fab molecule, as demonstrated by relative affinity determinations and competition experiments. This new method is suitable for extensive utilization in immunological experimental work using recombinant Fabs.
DOI: 10.3233/HAB-2001-103-407
Journal: Human Antibodies, vol. 10, no. 3-4, pp. 149-154, 2001
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