7MMP

Crystal Structure of the Class Ie 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, C, D (A, B, C, D)	Ribonucleoside-diphosphate reductase	polymer	342	39321.0	4	UniProt (F2I8X9)	Aerococcus urinae (strain ACS-120-V-Col10a)
2	E, F, G, H (E, G, F, H)	Protein NrdI	polymer	147	16486.5	4	UniProt (A0A178HGH7) Pfam (PF07972)	Aerococcus urinae
3	I, J, M, O, Q (A, C, G, F, H)	CALCIUM ION	non-polymer		40.1	5	Chemie (CA)
4	K, L, N, P (E, G, F, H)	FLAVIN MONONUCLEOTIDE	non-polymer		456.3	4	Chemie (FMN)
5	R, S, T, U, V... (A, B, C, D, E...)	water	water		18.0	453	Chemie (HOH)

Sequence modifications

A, B, C, D: 1 - 337 (UniProt: F2I8X9)

PDB	External Database	Details
Ser -4	-	expression tag
Asn -3	-	expression tag
Ile -2	-	expression tag
Leu -1	-	expression tag
Glu 0	-	expression tag

E, G, F, H: 1 - 142 (UniProt: A0A178HGH7)

PDB	External Database	Details
Ser -4	-	expression tag
Asn -3	-	expression tag
Ile -2	-	expression tag
Leu -1	-	expression tag
Glu 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	223229.8
Non-Polymers*	Number of molecules	9
	Total formula weight	2025.8
All*	Total formula weight	225255.5

*Water molecules are not included.