1SNA

An Oligomeric Domain-Swapped Beta-Beta-Alpha Mini-Protein

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	tetrameric beta-beta-alpha mini-protein	polymer	23	2666.9	4			BBAT
2	C	ISOPROPYL ALCOHOL	non-polymer		60.1	1	Chemie (IPA)
3		water	water		18.0	134	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	10667.6
Non-Polymers*	Number of molecules	1
	Total formula weight	60.1
All*	Total formula weight	10727.7

*Water molecules are not included.