2A1R

Crystal structure of PARN nuclease domain

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)	5'-R(*AP*AP*A)-3'	polymer	3	942.7	2
2	C, D (A, B)	Poly(A)-specific ribonuclease PARN	polymer	430	49617.1	2	UniProt (O95453) Pfam (PF04857)	Homo sapiens (human)	Polyadenylate-specific ribonuclease, Deadenylating nuclease, Deadenylation nuclease, PARN
3	E, F, G, H (C, D, A, B)	water	water		18.0	153	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	101119.6
All*	Total formula weight	101119.6

*Water molecules are not included.