Another resource is CAMERA: http://camera.calit2.net/
Ref: Community cyberinfrastructure for Advanced Microbial Ecology Research and Analysis: the CAMERA resource (2011) Shulei Sun; Jing Chen; Weizhong Li; Ilkay Altinatas; Abel Lin; Steve Peltier; Karen Stocks; Eric E. Allen; Mark Ellisman; Jeffrey Grethe; John Wooley Nucleic Acids Research 2010; doi: 10.1093/nar/gkq1102
Camera is a web-based platform that can annotate your sequence data using KEGG and or COGs.