1QX7

Crystal structure of apoCaM bound to the gating domain of small conductance Ca2+-activated potassium channel

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	I, R, A, B, M	Calmodulin	polymer	148	17143.4	5	UniProt (P62161) Pfam (PF13499) UniProt (by SIFTS) (P0DP29) In PDB	Rattus norvegicus (Norway rat)
2	D	Small conductance calcium-activated potassium channel protein 2	polymer	85	10217.0	1	UniProt (P70604) Pfam (PF02888) In PDB	Rattus norvegicus (Norway rat)	SK2

Sequence modifications

I, R, A, B, M: 1 - 148 (UniProt: P62161)

PDB	External Database	Details
Mse 36	Met 36	modified residue
Mse 51	Met 51	modified residue
Mse 71	Met 71	modified residue
Mse 72	Met 72	modified residue
Mse 76	Met 76	modified residue
Mse 109	Met 109	modified residue
Mse 124	Met 124	modified residue
Mse 144	Met 144	modified residue
Mse 145	Met 145	modified residue

D: 411 - 487 (UniProt: P70604)

PDB	External Database	Details
Leu 488	-	cloning artifact
Glu 489	-	cloning artifact
His 490	-	expression tag
His 491	-	expression tag
His 492	-	expression tag
His 493	-	expression tag
His 494	-	expression tag
His 495	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	95934.0
All*	Total formula weight	95934.0

*Water molecules are not included.