1A99

PUTRESCINE RECEPTOR (POTF) FROM E. COLI

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D	PUTRESCINE-BINDING PROTEIN	polymer	344	38299.4	4	UniProt (P31133) Pfam (PF13416) In PDB	Escherichia coli	POTF
2	A, B, C, D	1,4-DIAMINOBUTANE	non-polymer		88.2	4	Chemie (PUT)
3		water	water		18.0	584	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	153197.6
Non-Polymers*	Number of molecules	4
	Total formula weight	352.6
All*	Total formula weight	153550.2

*Water molecules are not included.