7RZO

Crystal structure of a dihydrofolate reductase (folA) from Stenotrophomonas maltophilia

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Dihydrofolate reductase	polymer	171	19266.9	1	UniProt (B2FPG1) Pfam (PF00186)	Stenotrophomonas maltophilia (strain K279a)
2	B, D (A)	1,2-ETHANEDIOL	non-polymer		62.1	2	Chemie (EDO)
3	C (A)	CHLORIDE ION	non-polymer		35.5	1	Chemie (CL)
4	E (A)	water	water		18.0	262	Chemie (HOH)

Sequence modifications

A: 1 - 163 (UniProt: B2FPG1)

PDB	External Database	Details
Met -7	-	initiating methionine
Ala -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	19266.9
Non-Polymers*	Number of molecules	3
	Total formula weight	159.6
All*	Total formula weight	19426.5

*Water molecules are not included.