1SMS

Structure of the Ribonucleotide Reductase Rnr4 Homodimer from Saccharomyces cerevisiae

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Ribonucleoside-diphosphate reductase small chain 2	polymer	345	40102.5	2	UniProt (P49723) Pfam (PF00268)	Saccharomyces cerevisiae (baker's yeast)	Ribonucleotide reductase small subunit 2
2	C, D, E, F (A, B)	MERCURY (II) ION	non-polymer		200.6	4	Chemie (HG)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	80205.0
Non-Polymers*	Number of molecules	4
	Total formula weight	802.4
All*	Total formula weight	81007.4

*Water molecules are not included.