7OKZ

CRYSTAL STRUCTURE OF THE COFACTOR-DEVOID 1-H-3-HYDROXY-4- OXOQUINALDINE 2,4-DIOXYGENASE (HOD) CATALYTICALLY INACTIVE H251A VARIANT COMPLEXED WITH 2-METHYL- QUINOLIN-4(1H)-ONE UNDER HYPEROXIC CONDITIONS

This is a non-PDB format compatible entry.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	AAA, BBB	1H-3-hydroxy-4-oxoquinaldine 2,4-dioxygenase	polymer	288	33222.3	2	UniProt (O31266) Pfam (PF00561) In PDB	Paenarthrobacter nitroguajacolicus (Arthrobacter nitroguajacolicus)
2	AAA, BBB	2-methyl-quinolin-4(1H)-one	non-polymer		159.2	2	Chemie (VFH)
3	AAA, BBB	POTASSIUM ION	non-polymer		39.1	2	Chemie (K)
4	AAA	D(-)-TARTARIC ACID	non-polymer		150.1	1	Chemie (TAR)
5	AAA, BBB	GLYCEROL	non-polymer		92.1	3	Chemie (GOL)
6		water	water		18.0	255	Chemie (HOH)

Sequence modifications

AAA, BBB: 1 - 276 (UniProt: O31266)

PDB	External Database	Details
Met -11	-	initiating methionine
Arg -10	-	expression tag
Gly -9	-	expression tag
Ser -8	-	expression tag
His -7	-	expression tag
His -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
Gly -1	-	expression tag
Ser 0	-	expression tag
Ser 69	Cys 69	engineered mutation
Ala 251	His 251	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	66444.6
Non-Polymers*	Number of molecules	8
	Total formula weight	822.9
All*	Total formula weight	67267.6

*Water molecules are not included.