blosum80 is different than elsewhere  

```
for example:

http://icb.med.cornell.edu/education/courses/introtobio/BLOSUM80

http://www.ncbi.nlm.nih.gov/IEB/ToolBox/C_DOC/lxr/source/data/BLOSUM80
```

Original issue reported on code.google.com by `jhe...@gmail.com` on 30 Oct 2013 at 10:18
