2FWW

human beta-tryptase II complexed with 4-piperidinebutyrate to make acylenzyme

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	Tryptase beta-2	polymer	245	27491.4	4	UniProt (P20231) Pfam (PF00089) In PDB	Homo sapiens (human)	Tryptase-2, Tryptase II
2	A, B, C, D	4-PIPERIDINEBUTYRATE	non-polymer		155.2	4	Chemie (C1R)
3		water	water		18.0	611	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	109965.7
Non-Polymers*	Number of molecules	4
	Total formula weight	620.9
All*	Total formula weight	110586.7

*Water molecules are not included.