5KZU

Crystal structure of an acetylcholine binding protein from Aplysia californica (Ac-AChBP) in complex with click chemistry compound 9-[[1-[8-methyl-8-(2-phenylethyl)-8-azoniabicyclo[3.2.1]octan-3-yl]triazol-4-yl]methyl]carbazole

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	Soluble acetylcholine receptor	polymer	230	26212.1	5	UniProt (Q8WSF8) Pfam (PF02931) In PDB	Aplysia californica (California sea hare)
2	A, B, D, E	SULFATE ION	non-polymer		96.1	5	Chemie (SO4)
3	A, C	TETRAETHYLENE GLYCOL	non-polymer		194.2	2	Chemie (PG4)
4	D	9-[[1-[8-methyl-8-(2-phenylethyl)-8-azoniabicyclo[3.2.1]octan-3-yl]triazol-4-yl]methyl]carbazole	non-polymer		476.6	1	Chemie (74S)
5		water	water		18.0	200	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

Contents of the asymmetric unit

Polymers	Number of chains	5
	Total formula weight	131060.5
Non-Polymers*	Number of molecules	8
	Total formula weight	1345.4
All*	Total formula weight	132405.9

*Water molecules are not included.