3BW1

Crystal structure of homomeric yeast Lsm3 exhibiting novel octameric ring organisation

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)	U6 snRNA-associated Sm-like protein LSm3	polymer	96	10999.3	2	UniProt (P57743) Pfam (PF01423)	Saccharomyces cerevisiae (baker's yeast)	SmX4 protein
2	C, D, E, G (A, B)	(4S)-2-METHYL-2,4-PENTANEDIOL	non-polymer		118.2	4	Chemie (MPD)
3	F (B)	SULFATE ION	non-polymer		96.1	1	Chemie (SO4)
4	H, I (A, B)	water	water		18.0	2	Chemie (HOH)

Sequence modifications

A, B: 1 - 89 (UniProt: P57743)

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

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	21998.7
Non-Polymers*	Number of molecules	5
	Total formula weight	568.8
All*	Total formula weight	22567.4

*Water molecules are not included.