3CBG

Functional and Structural Characterization of a Cationdependent O-Methyltransferase from the Cyanobacterium Synechocystis Sp. Strain PCC 6803

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	O-methyltransferase	polymer	232	25742.5	1	UniProt (Q55813) Pfam (PF01596) In PDB	Synechocystis sp.
2	A	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
3	A	S-ADENOSYL-L-HOMOCYSTEINE	non-polymer		384.4	1	Chemie (SAH)
4	A	3-(4-HYDROXY-3-METHOXYPHENYL)-2-PROPENOIC ACID	non-polymer		194.2	1	Chemie (FER)
5	A	(2E)-3-(3-hydroxy-4-methoxyphenyl)prop-2-enoic acid	non-polymer		194.2	1	Chemie (4FE)
6		water	water		18.0	124	Chemie (HOH)

Sequence modifications

A: 1 - 220 (UniProt: Q55813)

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

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	25742.5
Non-Polymers*	Number of molecules	4
	Total formula weight	797.1
All*	Total formula weight	26539.6

*Water molecules are not included.