3KUY

DNA Stretching in the Nucleosome Facilitates Alkylation by an Intercalating Antitumor Agent

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, E	Histone H3.2	polymer	135	15303.9	2	UniProt (P84233) Pfam (PF00125) In PDB	Xenopus laevis (African clawed frog)
2	B, F	Histone H4	polymer	102	11263.2	2	UniProt (P62799) Pfam (PF15511) In PDB	Xenopus laevis (African clawed frog)
3	C, G	Histone H2A	polymer	119	12941.1	2	UniProt (Q6AZJ8) Pfam (PF00125) Pfam (PF16211) UniProt (by SIFTS) (P06897) In PDB	Xenopus laevis (African clawed frog)
4	D, H	Histone H2B	polymer	125	13848.1	2	UniProt (Q92130) Pfam (PF00125) UniProt (by SIFTS) (P02281) In PDB	Xenopus laevis (African clawed frog)
5	I	DNA (145-MER)	polymer	145	44749.7	1
6	J	DNA (145-MER)	polymer	145	44740.6	1
7	E	MANGANESE (II) ION	non-polymer		54.9	1	Chemie (MN)
8	I, J	2-[(2R)-oxiran-2-ylmethyl]-1H-benzo[de]isoquinoline-1,3(2H)-dione	non-polymer		253.3	2	Chemie (ATV)

Sequence modifications

A, E: 1 - 135 (UniProt: P84233)

PDB	External Database	Details
Ala 102	Gly 103	SEE REMARK 999

D, H: -2 - 122 (UniProt: Q92130)

PDB	External Database	Details
Glu -1	Asp 3	SEE REMARK 999
Pro 7	Ala 11	SEE REMARK 999
Thr 29	Ser 33	SEE REMARK 999

Contents of the asymmetric unit

Polymers	Number of chains	10
	Total formula weight	196203.0
Non-Polymers*	Number of molecules	3
	Total formula weight	561.4
All*	Total formula weight	196764.5

*Water molecules are not included.