3ZD8

Potassium bound structure of E. coli ExoIX in P1

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	PROTEIN XNI	polymer	251	28203.2	2	UniProt (Q8X6R9) Pfam (PF02739) Pfam (PF01367)	ESCHERICHIA COLI	EXOIX
2	C, D (A, B)	POTASSIUM ION	non-polymer		39.1	2	Chemie (K)
3	E, F (A, B)	water	water		18.0	247	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	56406.3
Non-Polymers*	Number of molecules	2
	Total formula weight	78.2
All*	Total formula weight	56484.5

*Water molecules are not included.