3FLD

Crystal structure of the trai c-terminal domain

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Protein traI	polymer	153	16193.0	2	UniProt (P14565) Pfam (PF07057) In PDB	Escherichia coli K-12	DNA helicase I
2	A, B	SULFATE ION	non-polymer		96.1	10	Chemie (SO4)
3		water	water		18.0	130	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	32386.1
Non-Polymers*	Number of molecules	10
	Total formula weight	960.6
All*	Total formula weight	33346.7

*Water molecules are not included.