Document 0951 DOCN M9540951 TI A new phage display system to construct multicombinatorial libraries of very large antibody repertoires. DT 9504 AU Geoffroy F; Sodoyer R; Aujame L; Department of Molecular Immunology, Pasteur Merieux Serums et; Vaccins, Marcy l'Etoile, France. SO Gene. 1994 Dec 30;151(1-2):109-13. Unique Identifier : AIDSLINE MED/95129840 AB We present an easy and efficient technique for the construction of large phage-displayed antibody (Ab) repertoires through the recombination of two separate heavy (VH) and light (VL) chain gene libraries. Here, the system has been applied to the display of a chimpanzee anti-HIV gp160 Ab. The process, which makes use of lambda phage att recombination sites, leads to the irreversible physical association between plasmid and phagemid vectors carrying, respectively, VL and VH sequences. The heat-inducible expression of the Int recombinase allows perfect control of recombination. Selection of the recombinant phagemid is made possible by the assembly, in vivo, of a genetic marker (chloramphenicol resistance) created only after the correct recombination event. Theoretically, all possible associations between the VL and VH sequences should be obtained, and it should be possible to generate multicombinatorial libraries of close to 10(12) clones. DE Animal Chimpansee troglodytes Enzyme-Linked Immunosorbent Assay *Gene Library Gene Products, env/ANALYSIS/*IMMUNOLOGY *Genes, Immunoglobulin HIV/IMMUNOLOGY/ISOLATION & PURIF HIV Antibodies/*GENETICS Immunoglobulins, Fab/ANALYSIS/BIOSYNTHESIS/GENETICS Immunoglobulins, Heavy-Chain/*GENETICS Immunoglobulins, Light-Chain/*GENETICS Plasmids Protein Precursors/ANALYSIS/*IMMUNOLOGY Recombination, Genetic Restriction Mapping Support, Non-U.S. Gov't JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).