Omega conotoxins
US8673856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2007 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Oct 11, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K38/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a method for increasing the binding reversibility of a ω-conotoxin to a N-type calcium channel, which comprises preparing a ω-conotoxin having a Ile and/or Ala residue at a position of amino acid (11 and/or 12), respectively in the second loop between cysteine residues (2 and 3) of the ω-conotoxin represented by the formula I, such that the prepared ω-conotoxin has the increased binding reversibility to N-type calcium channel. In addition, the present invention relates to a novel ω-conotoxin and a pharmaceutical composition having plausible properties in view of blocking activity to and specificity to N-type calcium channel, and dramatically improved binding reversibility to N-type calcium channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.