1TON

RAT SUBMAXILLARY GLAND SERINE PROTEASE, TONIN. STRUCTURE SOLUTION AND REFINEMENT AT 1.8 ANGSTROMS RESOLUTION

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	TONIN	polymer	235	25686.4	1	UniProt (P00759) Pfam (PF00089) In PDB	Rattus rattus (black rat)
2	A	ZINC ION	non-polymer		65.4	1	Chemie (ZN)
3		water	water		18.0	149	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	25686.4
Non-Polymers*	Number of molecules	1
	Total formula weight	65.4
All*	Total formula weight	25751.8

*Water molecules are not included.