FC binding protein and method for manufacturing same
US9453066B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 10, 2011 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Aug 25, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07K2319/21
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Disclosed are: an Fc binding protein having increased stability with respect to heat, acid, and/or alkalinity compared with the wild type; a method for producing same; and a method for specifically isolating protein containing an Fc binding protein binding site using said Fc binding protein as a ligand for affinity chromatography.An Fc binding protein was obtained having increased stability with respect to heat, acid, and/or alkalinity compared with the wild-type human Fc receptor by means of substituting at least one specific amino acid residue in the extracellular domain of the wild-type human Fc receptor with another amino acid residue. The Fc binding protein is useful as a ligand for affinity chromatography for example by immobilizing in a solid phase. Also, when the Fc binding protein is expressed using a host that has been transformed with an expression vector containing a polynucleotide coding for said protein, the amount of produced protein is increased compared with using a wild-type human Fc receptor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.