7R7O

Structure of methyltransferase domain of Spb1 boudn to SAM

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)	AdoMet-dependent rRNA methyltransferase SPB1	polymer	220	24990.2	2	UniProt (A0A7I9D0Y8) Pfam (PF01728) UniProt (by SIFTS) (P25582)	Saccharomyces cerevisiae (Baker's yeast)	2'-O-ribose RNA methyltransferase,S-adenosyl-L-methionine-dependent methyltransferase
2	C, D (A, B)	S-ADENOSYLMETHIONINE	non-polymer		398.4	2	Chemie (SAM)
3	E, F (A, B)	water	water		18.0	541	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	49980.4
Non-Polymers*	Number of molecules	2
	Total formula weight	796.9
All*	Total formula weight	50777.3

*Water molecules are not included.