1A41

TYPE 1-TOPOISOMERASE CATALYTIC FRAGMENT FROM VACCINIA VIRUS

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	TOPOISOMERASE I	polymer	234	27275.0	1	UniProt (P68698) Pfam (PF01028) In PDB	Vaccinia virus
2	A	SULFATE ION	non-polymer		96.1	1	Chemie (SO4)
3		water	water		18.0	164	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	27275.0
Non-Polymers*	Number of molecules	1
	Total formula weight	96.1
All*	Total formula weight	27371.0

*Water molecules are not included.