2NUU

Regulating the Escherichia coli ammonia channel: the crystal structure of the AmtB-GlnK complex

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...	Ammonia channel	polymer	415	43397.7	6	UniProt (P69681) Pfam (PF00909) In PDB	Escherichia coli	Ammonia transporter, AmtB
2	G, H, I, J, K...	Nitrogen regulatory protein P-II 2	polymer	112	12276.2	6	UniProt (P0AC55) Pfam (PF00543) In PDB	Escherichia coli	GlnK
3	G, H, J, L	ADENOSINE-5'-DIPHOSPHATE	non-polymer		427.2	6	Chemie (ADP)
4		water	water		18.0	550	Chemie (HOH)

Sequence modifications

A, B, C, D, E, F: 3 - 406 (UniProt: P69681)

PDB	External Database	Details
Ala -8	-	expression tag
Pro -7	-	expression tag
Ala -6	-	expression tag
Val -5	-	expression tag
Ala -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag
His 1	-	expression tag
His 2	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	12
	Total formula weight	334043.3
Non-Polymers*	Number of molecules	6
	Total formula weight	2563.2
All*	Total formula weight	336606.6

*Water molecules are not included.