2QJ6

Crystal structure analysis of a 14 repeat C-terminal fragment of toxin TcdA in Clostridium difficile

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Toxin A	polymer	332	37240.2	2	UniProt (P16154) Pfam (PF01473) Pfam (PF19127)	Clostridium difficile
2	C, D (A, B)	water	water		18.0	183	Chemie (HOH)

Sequence modifications

A, B: 13 - 332 (UniProt: P16154)

PDB	External Database	Details
Met 1	-	expression tag
Gly 2	-	expression tag
Ser 3	-	expression tag
Ser 4	-	expression tag
His 5	-	expression tag
His 6	-	expression tag
His 7	-	expression tag
His 8	-	expression tag
His 9	-	expression tag
His 10	-	expression tag
His 11	-	expression tag
His 12	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	74480.5
All*	Total formula weight	74480.5

*Water molecules are not included.