We have two slightly different pathogenic strains of E. coli, O157:H7 EDL933  and O157:H7 Sakai, to compare against the nonpathogenic strain K-12. To make sure that each comparison is well represented, I've divided us as follows:
 

Person	Organism to consider (besides K-12)	Related article
Aman Bajwa	E. coli O157:H7 EDL933	Perna et al, 2001
Henry Bateman	E. coli O157:H7 EDL933	Perna et al, 2001
Tommy Bills	E. coli O157:H7 Sakai	Hayashi et al, 2001
Andrew Boutoun	E. coli O157:H7 EDL933	Perna et al, 2001
Hey Chong	E. coli O157:H7 EDL933	Perna et al, 2001
Leslie Filicky	E. coli O157:H7 EDL933	Perna et al, 2001
Steve Killeffer	E. coli O157:H7 Sakai	Hayashi et al, 2001
Andrey Matveyev	E. coli O157:H7 EDL933	Perna et al, 2001
Antoine Nicolas	E. coli O157:H7 Sakai	Hayashi et al, 2001
Jigar Patel	E. coli O157:H7 Sakai	Hayashi et al, 2001
Daniella Puiu	E. coli O157:H7 Sakai	Hayashi et al, 2001
Xinguo Qian	E. coli O157:H7 Sakai	Hayashi et al, 2001
Carlos Ramirez	E. coli O157:H7 Sakai	Hayashi et al, 2001
Larry Schwartz	E. coli O157:H7 EDL933	Perna et al, 2001

Please read the article related to your particular pathogenic strain (skim by Friday, 13 Sep), download the set of deduced proteins of both E. coli K-12 your pathogenic strain (by Monday, 16 Sep), and Blast the two sets against each other (by Monday, 16 Sep).