4LNO

B. subtilis glutamine synthetase structures reveal large active site conformational changes and basis for isoenzyme specific regulation: form two of GS-1

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, E... (A, B, C, D, E...)	Glutamine synthetase	polymer	443	50206.9	6	UniProt (P12425) Pfam (PF03951) Pfam (PF00120)	Bacillus subtilis	Glutamate--ammonia ligase
2	G, H, J, K, N... (A, B, C, D, E...)	MAGNESIUM ION	non-polymer		24.3	12	Chemie (MG)
3	I, L, M, R, U... (A, B, C, D, E...)	GLUTAMINE	non-polymer		146.1	6	Chemie (GLN)
4	AA, BA, CA, DA, Y... (C, D, E, F, A...)	water	water		18.0	713	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	301241.4
Non-Polymers*	Number of molecules	18
	Total formula weight	1168.5
All*	Total formula weight	302410.0

*Water molecules are not included.