3RK2

Truncated SNARE complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, E	Vesicle-associated membrane protein 2	polymer	37	4254.8	2	UniProt (P63027) Pfam (PF00957) In PDB	Homo sapiens (human)	VAMP-2, Synaptobrevin-2
2	B, F	Syntaxin-1A	polymer	65	7551.5	2	UniProt (P32851) Pfam (PF05739) In PDB	Rattus norvegicus (brown rat rat rats)	Neuron-specific antigen HPC-1, Synaptotagmin-associated 35 kDa protein, P35A
3	C, G	Synaptosomal-associated protein 25	polymer	81	9500.6	2	UniProt (P60880) In PDB	Homo sapiens (human)	SNAP-25, Super protein, SUP, Synaptosomal-associated 25 kDa protein
4	D, H	Synaptosomal-associated protein 25	polymer	65	7427.3	2	UniProt (P60880) In PDB	Homo sapiens (human)	SNAP-25, Super protein, SUP, Synaptosomal-associated 25 kDa protein
5	B, C	CALCIUM ION	non-polymer		40.1	4	Chemie (CA)
6		water	water		18.0	37	Chemie (HOH)

Sequence modifications

A, E: 28 - 60 (UniProt: P63027)

PDB	External Database	Details
Gly 24	-	expression tag
Pro 25	-	expression tag
Leu 26	-	expression tag
Gly 27	-	expression tag

B, F: 191 - 253 (UniProt: P32851)

PDB	External Database	Details
Gly 189	-	expression tag
Ser 190	-	expression tag

C, G: 7 - 82 (UniProt: P60880)

PDB	External Database	Details
Gly 3	-	expression tag
Ser 4	-	expression tag
His 5	-	expression tag
Met 6	-	expression tag
Trp 83	-	expression tag

D, H: 141 - 203 (UniProt: P60880)

PDB	External Database	Details
Gly 139	-	expression tag
Ser 140	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	57468.4
Non-Polymers*	Number of molecules	4
	Total formula weight	160.3
All*	Total formula weight	57628.7

*Water molecules are not included.