1KNA

Chromo domain of HP1 complexed with histone H3 tail containing dimethyllysine 9.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	HETEROCHROMATIN PROTEIN 1	polymer	69	8586.5	1	UniProt (P05205) Pfam (PF00385) In PDB	Drosophila melanogaster (fruit fly)	HP1, NONHISTONE CHROMOSOMAL PROTEIN C1A9 ANTIGEN
2	P	METHYLATED Histone H3	polymer	16	1756.0	1	UniProt (P02299) In PDB
3		water	water		18.0	86	Chemie (HOH)

Sequence modifications

A: 8 - 76 (UniProt: P05205)

PDB	External Database	Details
Met 8	8	engineered mutation
Lys 9	9	engineered mutation
Lys 10	10	engineered mutation
His 11	11	expression tag
His 12	12	expression tag
His 13	13	expression tag
His 14	14	expression tag
His 15	15	expression tag
His 16	16	expression tag
Met 38	Lys 38	engineered mutation

P: 1 - 16 (UniProt: P02299)

PDB	External Database	Details
Mly 9	Lys 9	modified residue
Tyr 16	Pro 16	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	10342.5
All*	Total formula weight	10342.5

*Water molecules are not included.