Questions: Topoisomerase and DNA gyrase

[Daniel Oskarsson]

Could any one point me to good books or other sourch of information
about Topoisomerse and DNA gyrase?


The main questions that I need answers on are

1.  How do Topoisomerase 3 and 4 differ from Topoisomerase 1 and 2 ?
2.  What is the relationship between Topoisomerase and DNA gyrase?  
    Is gyrase just the name of Topo II in Bacteria/Archaea ?
3.  What is difference between "DNA gyrase" and "reverse DNA gyrase" ?
4.  Could I expect to find Topoisomerase II in a Archie.?

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Daníel Óskarsson.            Studies:  MSc program högskolan Skövde
N. Trängallén 6b 77          E-Mail:   daniel at ida.his.se
541 46 Skövde                URL:      http://www.his.se/ida/~daniel/
Sweden                       Phone:    46-(0)500-481174
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