Single chain B3 antibody fusion proteins and their uses

Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Blood proteins or globulins – e.g. – proteoglycans – platelet...

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435 691, 435 697, 435 911, 5303871, 5303875, 5303877, 5303881, 5303888, 5303905, 530866, 530867, 536 2353, C12N 1562, A61K 3900, A61K 5110, C07K 1628

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056080395

ABSTRACT:
This invention provides for recombinant single chain antibodies capable of specifically binding to a Lewis.sup.Y -related carbohydrate antigen and fusion proteins comprising these antibodies. More particularly, the invention provides for single chain Fv regions of the monoclonal antibody B3. The invention also provides for a method of improving the binding affinity of antibodies lacking a serine at position 95 of the V.sub.H region that involves mutating position 95 to a serine.

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