4XDY

Structure of NADH-preferring ketol-acid reductoisomerase from an uncultured archean

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Ketol-acid reductoisomerase	polymer	338	37730.2	2	UniProt (Q64BR7) Pfam (PF07991) Pfam (PF01450) In PDB	uncultured archaeon GZfos26G2	Acetohydroxy-acid isomeroreductase,Alpha-keto-beta-hydroxylacyl reductoisomerase
2	A, B	MAGNESIUM ION	non-polymer		24.3	6	Chemie (MG)
3	A, B	1,4-DIHYDRONICOTINAMIDE ADENINE DINUCLEOTIDE	non-polymer		665.4	2	Chemie (NAI)
4	A, B	GLYCEROL	non-polymer		92.1	2	Chemie (GOL)
5	A, B	N-HYDROXY-N-ISOPROPYLOXAMIC ACID	non-polymer		147.1	2	Chemie (HIO)
6		water	water		18.0	359	Chemie (HOH)

Sequence modifications

A, B: 1 - 332 (UniProt: Q64BR7)

PDB	External Database	Details
His 333	-	expression tag
His 334	-	expression tag
His 335	-	expression tag
His 336	-	expression tag
His 337	-	expression tag
His 338	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	75460.3
Non-Polymers*	Number of molecules	12
	Total formula weight	1955.2
All*	Total formula weight	77415.5

*Water molecules are not included.