4BF3

ErpC, a member of the complement regulator acquiring family of surface proteins from Borrelia burgdorfei, possesses an architecture previously unseen in this protein family.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	ERPC	polymer	164	18386.2	2	UniProt (Q44790) Pfam (PF02471) In PDB	BORRELIA BURGDORFERI
2	A, B	1,2-ETHANEDIOL	non-polymer		62.1	5	Chemie (EDO)
3		water	water		18.0	24	Chemie (HOH)

Sequence modifications

A, B: 21 - 179 (UniProt: Q44790)

PDB	External Database	Details
Gly 16	-	expression tag
Pro 17	-	expression tag
Leu 18	-	expression tag
Gly 19	-	expression tag
Ser 20	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	36772.5
Non-Polymers*	Number of molecules	5
	Total formula weight	310.3
All*	Total formula weight	37082.8

*Water molecules are not included.