2IZO

Structure of an Archaeal PCNA1-PCNA2-FEN1 Complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	FLAP STRUCTURE-SPECIFIC ENDONUCLEASE	polymer	346	39358.3	1	UniProt (Q980U8) Pfam (PF00752) Pfam (PF00867) In PDB	SULFOLOBUS SOLFATARICUS	FEN1
2	B	DNA POLYMERASE SLIDING CLAMP C	polymer	246	27551.2	1	UniProt (Q97Z84) Pfam (PF00705) Pfam (PF02747) In PDB	SULFOLOBUS SOLFATARICUS	PROLIFERATING CELL NUCLEAR ANTIGEN HOMOLOG C, PCNA C, PCNA2
3	C	DNA POLYMERASE SLIDING CLAMP B	polymer	249	27569.7	1	UniProt (P57766) Pfam (PF00705) In PDB	SULFOLOBUS SOLFATARICUS	PROLIFERATING CELL NUCLEAR ANTIGEN HOMOLOG B, PCNA B, PCNA1
4	A, B, C	ZINC ION	non-polymer		65.4	4	Chemie (ZN)
5	A, B, C	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
6		water	water		18.0	78	Chemie (HOH)

Sequence modifications

A: 1 - 1 (PDB: 2IZO)
A: 2 - 346 (UniProt: Q980U8)
B: 1 - 1 (PDB: 2IZO)
B: 2 - 246 (UniProt: Q97Z84)

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	94479.3
Non-Polymers*	Number of molecules	8
	Total formula weight	358.9
All*	Total formula weight	94838.1

*Water molecules are not included.