2B2U

Tandem chromodomains of human CHD1 complexed with Histone H3 Tail containing trimethyllysine 4 and dimethylarginine 2

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Chromodomain-helicase-DNA-binding protein 1	polymer	187	22146.8	2	UniProt (O14646) Pfam (PF00385) In PDB	Homo sapiens (human)	CHD-1
2	C	Chromodomain-helicase-DNA-binding protein 1	polymer	115	13694.3	1	UniProt (O14646) Pfam (PF00385) In PDB	Homo sapiens (human)	CHD-1
3	D	Histone H3	polymer	16	1798.1	1	UniProt (P68431) In PDB

Sequence modifications

A, B: 10 - 185 (UniProt: O14646)

PDB	External Database	Details
Met 1	-	cloning artifact
Lys 2	-	cloning artifact
Lys 3	-	cloning artifact
His 4	-	expression tag
His 5	-	expression tag
His 6	-	expression tag
His 7	-	expression tag
His 8	-	expression tag
His 9	-	expression tag
Lys 186	-	cloning artifact
Lys 187	-	cloning artifact

C: 10 - 115 (UniProt: O14646)

PDB	External Database	Details
Met 1	-	cloning artifact
Lys 2	-	cloning artifact
Lys 3	-	cloning artifact
His 4	-	expression tag
His 5	-	expression tag
His 6	-	expression tag
His 7	-	expression tag
His 8	-	expression tag
His 9	-	expression tag

D: 1 - 15 (UniProt: P68431)

PDB	External Database	Details
Da2 2	Arg 2	modified residue
M3l 4	Lys 4	modified residue
Tyr 16	-	SEE REMARK 999

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	59785.9
All*	Total formula weight	59785.9

*Water molecules are not included.