4QDK

Crystal structure of magnesium protoporphyrin IX methyltransferase (ChlM) from Synechocystis PCC 6803 with bound SAH

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)	Magnesium-protoporphyrin O-methyltransferase	polymer	238	26179.8	2	UniProt (Q55467) Pfam (PF07109)	Synechocystis sp.	Magnesium-protoporphyrin IX methyltransferase
2	C, E (A, B)	S-ADENOSYL-L-HOMOCYSTEINE	non-polymer		384.4	2	Chemie (SAH)
3	D, F (A, B)	GLYCEROL	non-polymer		92.1	2	Chemie (GOL)
4	G, H (A, B)	water	water		18.0	372	Chemie (HOH)

Sequence modifications

A, B: 1 - 230 (UniProt: Q55467)

PDB	External Database	Details
Leu 231	-	expression tag
Glu 232	-	expression tag
His 233	-	expression tag
His 234	-	expression tag
His 235	-	expression tag
His 236	-	expression tag
His 237	-	expression tag
His 238	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	52359.6
Non-Polymers*	Number of molecules	4
	Total formula weight	953.0
All*	Total formula weight	53312.6

*Water molecules are not included.