Polypeptide linkers for production of biosynthetic proteins
US5482858A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1993 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Oct 19, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S424/80
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Disclosed are a family of synthetic proteins having binding affinity for a preselected antigen, and multifunctional proteins having such affinity. The proteins are characterized by one or more sequences of amino acids constituting a region which behaves as a biosynthetic antibody binding site (BABS). The sites comprise V.sub.H -V.sub.L or V.sub.L -V.sub.H -like single chains wherein the V.sub.H and V.sub.L -like sequences are attached by a polypeptide linker, or individual V.sub.H or V.sub.L -like domains. The binding domains comprise linked CDR and FR regions, which may be derived from separate immunoglobulins. The proteins may also include other polypeptide sequences which function, e.g., as an enzyme, toxin, binding site, or site for attachment to an immobilization media or radioactive atom. Methods are disclosed for producing the proteins, for designing BABS having any specificity that can be elicited by in vivo generation of antibody, for producing analogs thereof, and for producing multifunctional synthetic proteins which are self-targeted by virtue of their binding site region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.