A silly question  ....
What is the meaning of matrices like BLOSUM45, BLOSUM50, and so on ...
They are listed on the following web site:  http://www.ncbi.nlm.nih.gov/IEB/ToolBox/C_DOC/lxr/source/data/
The literature calles them "alignment scoring matrices". 
I would like to understand the underlying logic and meaning. I understand they deal with sequences alignment.

I would appreciate some suggestion about where to find a concised description of their usefulness, building rules,
and usage.

Thank you in advance,
Maura


tutti i telefonini TIM!


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