1LTO

Human alpha1-tryptase

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	alpha tryptase I	polymer	245	27732.8	4	UniProt (P15157) Pfam (PF00089) UniProt (by SIFTS) (Q15661) In PDB	Homo sapiens (human)
2		water	water		18.0	603	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	110931.0
All*	Total formula weight	110931.0

*Water molecules are not included.