4K1G

Structure of E. coli Nfo(Endo IV)-H69A mutant bound to a cleaved DNA duplex containing a alphadA:T basepair

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Endonuclease 4	polymer	285	31451.4	2	UniProt (P0A6C1) Pfam (PF01261) In PDB	Escherichia coli	Endodeoxyribonuclease IV, Endonuclease IV
2	E, M	DNA (5'-D(*GP*CP*GP*TP*CP*C)-3')	polymer	6	1785.2	2
3	F, N	DNA (5'-D(*CP*GP*TP*CP*GP*TP*CP*GP*TP*GP*GP*AP*CP*GP*C)-3')	polymer	15	4602.0	2
4	H, O	DNA (5'-D(P*AP*CP*GP*AP*CP*GP*AP*CP*G)-3')	polymer	9	2749.8	2
5	A, B	ZINC ION	non-polymer		65.4	5	Chemie (ZN)
6	A, B	DI(HYDROXYETHYL)ETHER	non-polymer		106.1	2	Chemie (PEG)
7		water	water		18.0	610	Chemie (HOH)

Sequence modifications

A, B: 1 - 285 (UniProt: P0A6C1)

PDB	External Database	Details
Ala 69	His 69	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	81176.8
Non-Polymers*	Number of molecules	7
	Total formula weight	539.3
All*	Total formula weight	81716.1

*Water molecules are not included.