2IJX

Crystal structure of PCNA3 monomer from Sulfolobus solfataricus.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D (A, B, C, D)	DNA polymerase sliding clamp A	polymer	244	27489.1	4	UniProt (P57765) Pfam (PF00705) Pfam (PF02747)	Sulfolobus solfataricus	Proliferating cell nuclear antigen homolog A, PCNA A
2	E, F, G, H, I... (A, B, C, D)	1,2-ETHANEDIOL	non-polymer		62.1	20	Chemie (EDO)
3	AA, BA, Y, Z (C, D, A, B)	water	water		18.0	535	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	109956.5
Non-Polymers*	Number of molecules	20
	Total formula weight	1241.4
All*	Total formula weight	111197.8

*Water molecules are not included.