4JXJ

Crystal Structure of Ribosomal RNA small subunit methyltransferase A from Rickettsia bellii Determined by Iodide SAD Phasing

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Ribosomal RNA small subunit methyltransferase A	polymer	276	30727.0	1	UniProt (Q1RK29) Pfam (PF00398) In PDB	Rickettsia bellii	16S rRNA (adenine(1518)-N(6)/adenine(1519)-N(6))-dimethyltransferase, 16S rRNA dimethyladenosine transferase, 16S rRNA dimethylase, S-adenosylmethionine-6-N', N'-adenosyl(rRNA) dimethyltransferase
2	A	1,2-ETHANEDIOL	non-polymer		62.1	1	Chemie (EDO)
3	A	IODIDE ION	non-polymer		126.9	12	Chemie (IOD)
4		water	water		18.0	153	Chemie (HOH)

Sequence modifications

A: 1 - 268 (UniProt: Q1RK29)

PDB	External Database	Details
Met -7	-	expression tag
Ala -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	30727.0
Non-Polymers*	Number of molecules	13
	Total formula weight	1584.9
All*	Total formula weight	32312.0

*Water molecules are not included.