1KX4

X-Ray Structure of the Nucleosome Core Particle, NCP146b, at 2.6 A Resolution

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (I, J)	DNA (5'(ATCTCCAAATATCCCTTGCGGATCGTAGAAAAAGTGTGTCAAACTGCGCTATCAAAGGGAAACTTCAACTGAATTCAGTTGAAGTTTCCCTTTGATAGCGCAGTTTGACACACTTTTTCTACGATCCGCAAGGGATATTTGGAGAT)3')	polymer	146	45054.8	2		Homo sapiens (human)
2	C, G (A, E)	histone H3	polymer	135	15303.9	2	UniProt (P16105) Pfam (PF00125) UniProt (by SIFTS) (P84233)	Xenopus laevis (African clawed frog)
3	D, H (B, F)	histone H4	polymer	102	11263.2	2	UniProt (P02304) Pfam (PF15511) UniProt (by SIFTS) (P62799)	Xenopus laevis (African clawed frog)
4	E, I (C, G)	histone H2A.1	polymer	128	13907.2	2	UniProt (P06897) Pfam (PF00125) Pfam (PF16211)	Xenopus laevis (African clawed frog)
5	F, J (D, H)	histone H2B.2	polymer	125	13848.1	2	UniProt (P02281) Pfam (PF00125)	Xenopus laevis (African clawed frog)
6	K, L, M, N, O... (I, J, A)	MANGANESE (II) ION	non-polymer		54.9	6	Chemie (MN)
7	Q, R, S, T (A, C, E, G)	CHLORIDE ION	non-polymer		35.5	4	Chemie (CL)
8	AA, BA, CA, DA, U... (E, F, G, H, I...)	water	water		18.0	433	Chemie (HOH)

Sequence modifications

A, E: 1 - 135 (UniProt: P16105)

PDB	External Database	Details
Ala 102	Gly 102	conflict

C, G: 1 - 128 (UniProt: P06897)

PDB	External Database	Details
Arg 99	Gly 99	variant
Ser 123	Ala 123	conflict
-	Ala 126	deletion

D, H: -2 - 122 (UniProt: P02281)

PDB	External Database	Details
Thr 29	Ser 32	variant

Contents of the asymmetric unit

Polymers	Number of chains	10
	Total formula weight	198754.5
Non-Polymers*	Number of molecules	10
	Total formula weight	471.4
All*	Total formula weight	199226.0

*Water molecules are not included.