4U3E

Anaerobic ribonucleotide reductase

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Ribonucleoside triphosphate reductase	polymer	671	78830.6	2	UniProt (Q9WYL6) Pfam (PF13597) In PDB	Thermotoga maritima	Ribonucleotide reductase of class III (Anaerobic), large subunit, Uncharacterized protein
2	A, B	ZINC ION	non-polymer		65.4	2	Chemie (ZN)
3	A, B	CITRIC ACID	non-polymer		192.1	2	Chemie (CIT)
4	A, B	GLYCEROL	non-polymer		92.1	2	Chemie (GOL)
5	A	SODIUM ION	non-polymer		23.0	1	Chemie (NA)
6	A	ACETATE ION	non-polymer		59.0	1	Chemie (ACT)
7		water	water		18.0	892	Chemie (HOH)

Sequence modifications

A, B: 1 - 651 (UniProt: Q9WYL6)

PDB	External Database	Details
Mse -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	157661.2
Non-Polymers*	Number of molecules	8
	Total formula weight	781.3
All*	Total formula weight	158442.5

*Water molecules are not included.