Multimeric immunoglobulin-binding domain
US10208094B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2014 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | Aug 14, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07K2317/34
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A multimeric immunoglobulin-binding protein having improved properties as an affinity ligand for affinity chromatography, and an insoluble support immobilizing such a multimer. The immunoglobulin-binding protein is represented by the formula: (R1)n-(R2)m, or (R2)m-(R1)n. R2 is an immunoglobulin-binding domain including an amino acid residue that covalently bonds to an insoluble support upon immobilization reaction with the insoluble support, and R1 is an immunoglobulin-binding domain without containing an amino acid residue the presence of which in the sequence compared to when it is absent in the sequence reduces the immunoglobulin-binding activity of the support yielded by the immobilization reaction. The immunoglobulin-binding protein satisfies: (1) n is an integer of 5 to 9; (2) m is an integer of 1 or 2; (3) the n (R1) domains may or may not have the same sequence; and (4) the total number of domains (n+m) is 6 to 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.