4EZ1

Crystal structure of acetylcholine binding protein (AChBP) from Aplysia Californica in complex with alpha-conotoxin BuIA

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)	Soluble acetylcholine receptor	polymer	230	26212.1	5	UniProt (Q8WSF8) Pfam (PF02931)	Aplysia californica (California sea hare)	AChBP
2	F, G, H, I, J (K, L, M, N, O)	Alpha-conotoxin BuIA	polymer	14	1314.6	5	UniProt (P69657)	Conus bullatus	Conotoxin Bu1.3
3	K (C)	MANGANESE (II) ION	non-polymer		54.9	1	Chemie (MN)
4	L, M, N, O, P... (A, B, C, D, E...)	water	water		18.0	201	Chemie (HOH)

Sequence modifications

A, B, C, D, E: 1 - 219 (UniProt: Q8WSF8)

PDB	External Database	Details
Asp -8	-	expression tag
Tyr -7	-	expression tag
Lys -6	-	expression tag
Asp -5	-	expression tag
Asp -4	-	expression tag
Asp -3	-	expression tag
Asp -2	-	expression tag
Lys -1	-	expression tag
Leu 0	-	expression tag
Ser 220	-	expression tag
Arg 221	-	expression tag

K, L, M, N, O: 1 - 13 (UniProt: P69657)

PDB	External Database	Details
Nh2 14	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	10
	Total formula weight	137633.5
Non-Polymers*	Number of molecules	1
	Total formula weight	54.9
All*	Total formula weight	137688.4

*Water molecules are not included.