A single protein has been identified that matches your query.
This protein belongs to one or more protein families (see below).
Please review the list, and click 'Continue' to see interacting partners.
Identified Protein:
trpR (Escherichia coli K12 MG1655):   Trp operon repressor; This protein is an aporepressor. When complexed with L- tryptophan it binds the operator region of the trp operon (5'- ACTAGT-'3') and prevents the initiation of transcription. The complex also regulates trp repressor biosynthesis by binding to its regulatory region
Protein Families (COGs):