6I3G

Crystal structure of a putative peptide binding protein AppA from 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	ABC transporter, substrate-binding protein, family 5	polymer	490	55274.8	1	UniProt (A0A069AL86) Pfam (PF00496) In PDB	Clostridioides difficile	ABC-type transport system,oligopeptide-family solute-binding protein,Oligopeptide-binding protein AppA,Peptide ABC transporter substrate-binding protein
2	A	IODIDE ION	non-polymer		126.9	1	Chemie (IOD)
3	A	SULFATE ION	non-polymer		96.1	1	Chemie (SO4)
4		water	water		18.0	214	Chemie (HOH)

Sequence modifications

A: 31 - 498 (UniProt: A0A069AL86)

PDB	External Database	Details
Met 9	-	initiating methionine
Gly 10	-	expression tag
Ser 11	-	expression tag
Ser 12	-	expression tag
His 13	-	expression tag
His 14	-	expression tag
His 15	-	expression tag
His 16	-	expression tag
His 17	-	expression tag
His 18	-	expression tag
Ser 19	-	expression tag
Ser 20	-	expression tag
Gly 21	-	expression tag
Leu 22	-	expression tag
Glu 23	-	expression tag
Val 24	-	expression tag
Leu 25	-	expression tag
Phe 26	-	expression tag
Gln 27	-	expression tag
Gly 28	-	expression tag
Pro 29	-	expression tag
Ala 30	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	55274.8
Non-Polymers*	Number of molecules	2
	Total formula weight	223.0
All*	Total formula weight	55497.8

*Water molecules are not included.