4XR3

Escherichia Coli Replication Terminator Protein (Tus) Complexed With DNA- GC(6) swapped.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	DNA replication terminus site-binding protein	polymer	316	36803.3	1	UniProt (P16525) Pfam (PF05472) In PDB	Escherichia coli (strain K12)	Ter-binding protein
2	B	DNA (5'-D(*TP*AP*GP*TP*TP*AP*CP*AP*AP*CP*AP*TP*AP*GP*T)-3')	polymer	16	4896.2	1		Escherichia coli
3	C	DNA (5'-D(*TP*AP*CP*TP*AP*TP*GP*TP*TP*GP*TP*AP*AP*CP*TP*A)-3')	polymer	16	4887.2	1		Escherichia coli
4	A	IODIDE ION	non-polymer		126.9	4	Chemie (IOD)
5	A	(4S)-2-METHYL-2,4-PENTANEDIOL	non-polymer		118.2	1	Chemie (MPD)
6		water	water		18.0	32	Chemie (HOH)

Sequence modifications

A: 1 - 309 (UniProt: P16525)

PDB	External Database	Details
Met -6	-	initiating methionine
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	46586.7
Non-Polymers*	Number of molecules	5
	Total formula weight	625.8
All*	Total formula weight	47212.5

*Water molecules are not included.