1G4C

CRYSTAL STRUCTURE OF A COMPLEX OF HPPK(R92A) FROM E.COLI WITH MG2+ AT 1.65 ANGSTROM RESOLUTION

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	6-HYDROXYMETHYL-7,8-DIHYDROPTERIN PYROPHOSPHOKINASE	polymer	158	17880.4	2	UniProt (P26281) Pfam (PF01288)	Escherichia coli	2-AMINO-4-HYDROXY-6-HYDROXYMETHYLDIHYDROPTERIDINE PYROPHOSPHOKINASE, HPPK
2	C, F, G (A, B)	MAGNESIUM ION	non-polymer		24.3	3	Chemie (MG)
3	D, E, H (A, B)	CHLORIDE ION	non-polymer		35.5	3	Chemie (CL)
4	I, J (A, B)	water	water		18.0	424	Chemie (HOH)

Sequence modifications

A, B: 1 - 158 (UniProt: P26281)

PDB	External Database	Details
Ala 92	Arg 92	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	35760.8
Non-Polymers*	Number of molecules	6
	Total formula weight	179.3
All*	Total formula weight	35940.1

*Water molecules are not included.