1cgp is a 6 chain structure with sequence from Escherichia coli. The December 2003 RCSB PDB Molecule of the Month feature on Catabolite Activator Protein by David S. Goodsell is 10.2210/rcsb_pdb/mom_2003_12. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The 3 angstrom resolution crystal structure of the Escherichia coli catabolite gene activator protein (CAP) complexed with a 30-base pair DNA sequence shows that the DNA is bent by 90 degrees. This bend results almost entirely from two 40 degrees kinks that occur between TG/CA base pairs at positions 5 and 6 on each side of the dyad axis of the complex. DNA sequence discrimination by CAP derives both from sequence-dependent distortion of the DNA helix and from direct hydrogen-bonding interactions between three protein side chains and the exposed edges of three base pairs in the major groove of the DNA. The structure of this transcription factor--DNA complex provides insights into possible mechanisms of transcription activation.
Crystal structure of a CAP-DNA complex: the DNA is bent by 90 degrees.,Schultz SC, Shields GC, Steitz TA Science. 1991 Aug 30;253(5023):1001-7. PMID:1653449[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
↑ Schultz SC, Shields GC, Steitz TA. Crystal structure of a CAP-DNA complex: the DNA is bent by 90 degrees. Science. 1991 Aug 30;253(5023):1001-7. PMID:1653449
