8VT0

SPOT-RASTR - a cryo-EM specimen preparation technique that overcomes problems with preferred orientation and the air/water interface

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D	Beta-galactosidase	polymer	1022	116370.2	4	UniProt (A0A024L722) In PDB	Escherichia coli	Beta-gal,Lactase
2	A, B, C, D	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	465480.8
Non-Polymers*	Number of molecules	4
	Total formula weight	97.2
All*	Total formula weight	465578.0

*Water molecules are not included.