4M74

Mutant structure of methyltransferase from Streptomyces hygroscopicus

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)	Methyltransferase MppJ	polymer	357	39342.2	2	UniProt (Q643C8) Pfam (PF13649)	Streptomyces hygroscopicus
2	C, J (A, B)	S-ADENOSYL-L-HOMOCYSTEINE	non-polymer		384.4	2	Chemie (SAH)
3	D, K (A, B)	(2S,3R)-2,3-dihydroxy-3-phenylpropanoic acid	non-polymer		182.2	2	Chemie (M74)
4	E, L (A, B)	FE (III) ION	non-polymer		55.8	2	Chemie (FE)
5	F, M (A, B)	(2R)-2-hydroxy-3-phenylpropanoic acid	non-polymer		166.2	2	Chemie (HF2)
6	G, H, I, N (A, B)	CALCIUM ION	non-polymer		40.1	4	Chemie (CA)
7	O, P (A, B)	water	water		18.0	496	Chemie (HOH)

Sequence modifications

A, B: 1 - 337 (UniProt: Q643C8)

PDB	External Database	Details
Met -19	-	expression tag
Gly -18	-	expression tag
Ser -17	-	expression tag
Ser -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
His -10	-	expression tag
Ser -9	-	expression tag
Ser -8	-	expression tag
Gly -7	-	expression tag
Leu -6	-	expression tag
Val -5	-	expression tag
Pro -4	-	expression tag
Arg -3	-	expression tag
Gly -2	-	expression tag
Ser -1	-	expression tag
His 0	-	expression tag
Leu 127	Arg 127	engineered mutation
Ala 244	Asp 244	engineered mutation
Glu 300	Val 300	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	78684.5
Non-Polymers*	Number of molecules	12
	Total formula weight	1737.5
All*	Total formula weight	80422.0

*Water molecules are not included.