HOMEWORK#2

Electronic Journal / Virtual Library

* due on 4/15

----------------------------------------------------------------------------

* 1. Transcription of the ant gene during lytic growth of bacteriophage

P22 is regulated by the cooperative binding of two Arc repressor dimers

to a 21-base-pair operator site. Pabo and Sauer at MIT have solved the

co-crystal structure of Arc tetramer-operator complex. Please find the

article that they published this structure and show the abstracrt on

your homepage.

* 2. Smith and Sauer have also studied the role of operator subsites in

Arc repression. They described the results in a paper. Please find this

paper and show the full article on your homepage in PDF format.