1JK0

Ribonucleotide reductase Y2Y4 heterodimer

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	ribonucleoside-diphosphate reductase small chain 1	polymer	419	48378.7	1	UniProt (P09938) Pfam (PF00268)	Saccharomyces cerevisiae (baker's yeast)	RNR Y2
2	B (B)	ribonucleoside-diphosphate reductase small chain 2	polymer	345	40102.5	1	UniProt (P49723) Pfam (PF00268)	Saccharomyces cerevisiae (baker's yeast)	RNR Y4
3	C (A)	ZINC ION	non-polymer		65.4	1	Chemie (ZN)
4	D, E (A, B)	water	water		18.0	58	Chemie (HOH)

Sequence modifications

A: 1 - 399 (UniProt: P09938)

PDB	External Database	Details
Met -19	-	expression tag
Gly -18	-	expression tag
Ser -17	-	expression tag
Ser -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
His -10	-	expression tag
Ser -9	-	expression tag
Ser -8	-	expression tag
Gly -7	-	expression tag
Leu -6	-	expression tag
Val -5	-	expression tag
Pro -4	-	expression tag
Arg -3	-	expression tag
Gly -2	-	expression tag
Ser -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	88481.2
Non-Polymers*	Number of molecules	1
	Total formula weight	65.4
All*	Total formula weight	88546.6

*Water molecules are not included.