4B20

Structural basis of DNA loop recognition by Endonuclease V

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	ENDONUCLEASE V	polymer	225	25635.9	2	UniProt (Q9X2H9) Pfam (PF04493)	THERMOTOGA MARITIMA	DEOXYINOSINE 3'ENDONUCLEASE, DEOXYRIBONUCLEASE V, DNASE V
2	C, E (C, F)	5'-D(*GP*CP*GP*AP*CP*AP*GP)-3'	polymer	7	2147.4	2
3	D, F (D, G)	5'-D(*AP*TP*CP*TP*TP*GP*TP*CP*GP*CP)-3'	polymer	10	3011.0	2
4	G, H (A, B)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
5	I, J, K, L, M (A, B, C, D, G)	water	water		18.0	79	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	61588.7
Non-Polymers*	Number of molecules	2
	Total formula weight	48.6
All*	Total formula weight	61637.3

*Water molecules are not included.