5W1B

Tryptophan indole-lyase

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 (A, B, C, D)	Tryptophanase	polymer	467	52787.1	4	UniProt (P28796) Pfam (PF01212)	Proteus vulgaris	L-tryptophan indole-lyase,TNase
2	E, F, G, H (A, C)	POTASSIUM ION	non-polymer		39.1	4	Chemie (K)
3	I, J, K, L (A, B, C, D)	water	water		18.0	818	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	211148.4
Non-Polymers*	Number of molecules	4
	Total formula weight	156.4
All*	Total formula weight	211304.8

*Water molecules are not included.