1ecr is a 3 chain structure with sequence from Escherichia coli b. 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 crystal structure of the Escherichia coli replication-terminator protein (Tus) bound to terminus-site (Ter) DNA has been determined at 2.7 A resolution. The Tus protein folds into a previously undescribed architecture divided into two domains by a central basic cleft. This cleft accommodates locally deformed B-form Ter DNA and makes extensive contacts with the major groove, mainly through two interdomain beta-strands. The unusual structural features of this complex may explain how the replication fork is halted in only one direction.
Structure of a replication-terminator protein complexed with DNA.,Kamada K, Horiuchi T, Ohsumi K, Shimamoto N, Morikawa K Nature. 1996 Oct 17;383(6601):598-603. PMID:8857533[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
↑ Kamada K, Horiuchi T, Ohsumi K, Shimamoto N, Morikawa K. Structure of a replication-terminator protein complexed with DNA. Nature. 1996 Oct 17;383(6601):598-603. PMID:8857533 doi:http://dx.doi.org/10.1038/383598a0