3AZW

Crystal structure of the receptor binding domain

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	D/C mosaic neurotoxin	polymer	438	50907.2	2	UniProt (A5JGM8) Pfam (PF07953) Pfam (PF07951) UniProt (by SIFTS) (Q9LBR1) In PDB	Clostridium botulinum	Neurotoxin
2	A	SULFATE ION	non-polymer		96.1	2	Chemie (SO4)
3		water	water		18.0	12	Chemie (HOH)

Sequence modifications

A, B: 856 - 1285 (UniProt: A5JGM8)

PDB	External Database	Details
Leu 1286	-	expression tag
Glu 1287	-	expression tag
His 1288	-	expression tag
His 1289	-	expression tag
His 1290	-	expression tag
His 1291	-	expression tag
His 1292	-	expression tag
His 1293	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	101814.5
Non-Polymers*	Number of molecules	2
	Total formula weight	192.1
All*	Total formula weight	102006.6

*Water molecules are not included.