1. Trp repressor complexed with it's operator from PDB:

ID number: 1TRO

Authors: Z.OTWINOWSKI,R.G.ZHANG,P.B.SIGLER

Resolution: 1.9 ANGSTROMS.

residues in one monomer: 108

cofactors number in whole complex: 4

  • ( choose cartoon form)
  • select *B, *D,*F,*H
  • spacefill
  • color blue
  • seliect *A
  • color [ 200,150,250]
  • select *C
  • color white
  • select *E
  • color [50,200,50]
  • select *G
  • color [150,250,150]
  • select *I
  • color red
  • select *J
  • color [150,0,150]
  • select *K
  • color orange
  • select *L
  • color yellow

    • 2. Arc tetramer-operater complex in PDB:

    Arc operator's DNA sequence:

    5' TATAGTAGAGTGCTTCTATCAT 3'

    5' AATGATAGAAGCACTCTACTAT 3'

    Hydrogen bonds between beta-sheet side chains and DNA bases: