3D4V

Crystal Structure of an AlkA Host/Guest Complex N7MethylGuanine:Cytosine Base Pair

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-3-methyladenine glycosylase 2	polymer	282	31425.2	4	UniProt (P04395) Pfam (PF06029) Pfam (PF00730)	Escherichia coli	DNA-3-methyladenine glycosylase II, 3-methyladenine-DNA glycosylase II, inducible, TAG II, DNA-3-methyladenine glycosidase II
2	E, G (E, G)	5'-D(*DGP*DAP*DCP*DAP*DTP*DGP*DAP*(FMG)P*DTP*DGP*DCP*DC)-3'	polymer	12	3720.4	2
3	F, H (F, H)	5'-D(*DGP*DGP*DCP*DAP*DCP*DTP*DCP*DAP*DTP*DGP*DTP*DC)-3'	polymer	12	3638.4	2
4	I, J, K, L, M (A, B, C, D, E)	water	water		18.0	21	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	140418.6
All*	Total formula weight	140418.6

*Water molecules are not included.