3E74

Crystal structure of E. coli allantoinase with iron ions at the metal center

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)	Allantoinase	polymer	473	52602.5	4	UniProt (P77671) Pfam (PF01979)	Escherichia coli	Allantoin-utilizing enzyme
2	E, F, G, H, I... (A, B, C, D)	FE (III) ION	non-polymer		55.8	8	Chemie (FE)
3	M, N, O, P (A, B, C, D)	water	water		18.0	865	Chemie (HOH)

Sequence modifications

A, B, C, D: 1 - 453 (UniProt: P77671)

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
Ser -10	-	expression tag
Ser -9	-	expression tag
Gly -8	-	expression tag
Glu -7	-	expression tag
Asn -6	-	expression tag
Leu -5	-	expression tag
Tyr -4	-	expression tag
Phe -3	-	expression tag
Gln -2	-	expression tag
Gly -1	-	expression tag
His 0	-	expression tag
Ile 262	Val 262	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	210410.1
Non-Polymers*	Number of molecules	8
	Total formula weight	446.8
All*	Total formula weight	210856.9

*Water molecules are not included.