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Asym./Biol. Unit - manually (Jmol Viewer)

Asym./Biol. Unit (Jmol Viewer)

Asym./Biol. Unit - sites (Jmol Viewer)

Title :   DROSOPHILA NUCLEOSOME CORE

Authors :   C. R. Clapier, C. Petosa, C. W. Mueller

Date :   16 May 07 (Deposition) - 06 Nov 07 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.43

Chains :   Asym./Biol. Unit : A,B,C,D,E,F,G,H,I,J

Keywords :   Nucleosome Core, Histone Fold, Structural Protein/Dna Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   C. R. Clapier, S. Chakravarthy, C. Petosa, C. Fernandez-Tornero, K. Luger, C. W. Muller
Structure Of The Drosophila Nucleosome Core Particle Highlights Evolutionary Constraints On The H2A-H2B Histone Dimer.
Proteins V. 71 1 2007
PubMed-ID: 17957772 | Reference-DOI: 10.1002/PROT.21720
(for further references see the PDB file header)

Molecule 1 - DNA (147-MER)
	Chains	:	I
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606

Molecule 2 - DNA (147-MER)
	Chains	:	J
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606

Molecule 3 - HISTONE H3
	Chains	:	A, E
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Gene	:	HIS3
	Organism Common	:	FRUIT FLY
	Organism Scientific	:	DROSOPHILA MELANOGASTER
	Organism Taxid	:	7227

Molecule 4 - HISTONE H4
	Chains	:	B, F
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Gene	:	HIS4, H4
	Organism Common	:	FRUIT FLY
	Organism Scientific	:	DROSOPHILA MELANOGASTER
	Organism Taxid	:	7227

Molecule 5 - HISTONE H2A
	Chains	:	C, G
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Gene	:	HIS2A, H2A
	Organism Common	:	FRUIT FLY
	Organism Scientific	:	DROSOPHILA MELANOGASTER
	Organism Taxid	:	7227

Molecule 6 - HISTONE H2B
	Chains	:	D, H
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Gene	:	HIS2B
	Organism Common	:	FRUIT FLY
	Organism Scientific	:	DROSOPHILA MELANOGASTER
	Organism Taxid	:	7227

		1	2	3	4	5	6	7	8	9	10
Asymmetric/Biological Unit	:	A	B	C	D	E	F	G	H	I	J

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (2, 18)

No.	Name	Count	Type	Full Name
1	CL	4	Ligand/Ion	CHLORIDE ION
2	MN	14	Ligand/Ion	MANGANESE (II) ION

Asymmetric Unit (17, 17)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	DG I:48	BINDING SITE FOR RESIDUE MN I 1007
02	AC2	SOFTWARE	DG I:61	BINDING SITE FOR RESIDUE MN I 1008
03	AC3	SOFTWARE	DG I:27	BINDING SITE FOR RESIDUE MN I 1010
04	AC4	SOFTWARE	DG I:5 , DG J:-6	BINDING SITE FOR RESIDUE MN I 1011
05	AC5	SOFTWARE	DG I:-3 , DG I:-2	BINDING SITE FOR RESIDUE MN I 1012
06	AC6	SOFTWARE	DG I:-35 , DG I:-34	BINDING SITE FOR RESIDUE MN I 1013
07	AC7	SOFTWARE	DG J:61	BINDING SITE FOR RESIDUE MN J 1001
08	AC8	SOFTWARE	DT I:67 , DG J:27	BINDING SITE FOR RESIDUE MN J 1003
09	AC9	SOFTWARE	DG J:-3	BINDING SITE FOR RESIDUE MN J 1004
10	BC1	SOFTWARE	DG J:48	BINDING SITE FOR RESIDUE MN J 1005
11	BC2	SOFTWARE	DG J:-35 , DG J:-34	BINDING SITE FOR RESIDUE MN J 1009
12	BC3	SOFTWARE	DG I:-6 , DG J:5	BINDING SITE FOR RESIDUE MN J 1014
13	BC4	SOFTWARE	PRO A:121 , LYS A:122	BINDING SITE FOR RESIDUE CL A 1017
14	BC5	SOFTWARE	GLY C:45 , THR D:87 , SER D:88	BINDING SITE FOR RESIDUE CL D 1016
15	BC6	SOFTWARE	VAL D:45 , ASP E:77 , HOH E:1029	BINDING SITE FOR RESIDUE MN E 1002
16	BC7	SOFTWARE	MET E:120 , PRO E:121 , LYS E:122	BINDING SITE FOR RESIDUE CL E 1018
17	BC8	SOFTWARE	GLY G:45 , ALA G:46 , THR H:87 , SER H:88	BINDING SITE FOR RESIDUE CL H 1015

(no "SS Bond" information available for 2PYO)

(no "Cis Peptide Bond" information available for 2PYO)

(no "SAP(SNP)/Variant" information available for 2PYO)

Asymmetric/Biological Unit (3, 6)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	HISTONE_H2A	PS00046	Histone H2A signature.	H2A_DROME	21-27	2	C:20-26 G:20-26
2	HISTONE_H3_2	PS00959	Histone H3 signature 2.	H3_DROME	67-75	2	A:66-74 E:66-74
3	HISTONE_H2B	PS00357	Histone H2B signature.	H2B_DROME	90-112	2	D:89-111 H:89-111

(no "Exon" information available for 2PYO)

Asymmetric/Biological Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:99
 aligned with H3_DROME | P02299 from UniProtKB/Swiss-Prot  Length:136

    Alignment length:99
                                    47        57        67        77        87        97       107       117       127         
             H3_DROME    38 KPHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEASEAYLVGLFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA 136
               SCOP domains d2pyoa_ A: Histone H3                                                                               SCOP domains
               CATH domains 2pyoA00 A:37-135 Histone, subunit A                                                                 CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .......hhhhhhhhhhhhhh.....hhhhhhhhhhhhhhh.....eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------HISTONE_H------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------- Transcript
                 2pyo A  37 KPHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEASEAYLVGLFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA 135
                                    46        56        66        76        86        96       106       116       126

Chain B from PDB  Type:PROTEIN  Length:80
 aligned with H4_DROME | P84040 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:80
                                    33        43        53        63        73        83        93       103
             H4_DROME    24 RDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG 103
               SCOP domains d2pyob_ B: Histone H4                                                            SCOP domains
               CATH domains 2pyoB00 B:23-102 Histone, subunit A                                              CATH domains
               Pfam domains -------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhhh...ee..hhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhh...ee.... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------- Transcript
                 2pyo B  23 RDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG 102
                                    32        42        52        62        72        82        92       102

Chain C from PDB  Type:PROTEIN  Length:108
 aligned with H2A_DROME | P84051 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:108
                                    23        33        43        53        63        73        83        93       103       113        
            H2A_DROME    14 AKSRSNRAGLQFPVGRIHRLLRKGNYAERVGAGAPVYLAAVMEYLAAEVLELAGNAARDNKKTRIIPRHLQLAIRNDEELNKLLSGVTIAQGGVLPNIQAVLLPKKTE 121
               SCOP domains d2pyoc_ C: automated matches                                                                                 SCOP domains
               CATH domains 2pyoC00 C:13-120 Histone, subunit A                                                                          CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..hhhhhhh...hhhhhhhhhhhh....ee.hhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhhhhhhhhh...ee.........hhhhh..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE -------HISTONE---------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------ Transcript
                 2pyo C  13 AKSRSNRAGLQFPVGRIHRLLRKGNYAERVGAGAPVYLAAVMEYLAAEVLELAGNAARDNKKTRIIPRHLQLAIRNDEELNKLLSGVTIAQGGVLPNIQAVLLPKKTE 120
                                    22        32        42        52        62        72        82        92       102       112

Chain D from PDB  Type:PROTEIN  Length:95
 aligned with H2B_DROME | P02283 from UniProtKB/Swiss-Prot  Length:123

    Alignment length:95
                                    38        48        58        68        78        88        98       108       118     
            H2B_DROME    29 RKRKESYAIYIYKVLKQVHPDTGISSKAMSIMNSFVNDIFERIAAEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSSK 123
               SCOP domains d2pyod_ D: automated matches                                                                    SCOP domains
               CATH domains 2pyoD00 D:28-122 Histone, subunit A                                                             CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ......hhhhhhhhhhhhh...eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------HISTONE_H2B            ----------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------- Transcript
                 2pyo D  28 RKRKESYAIYIYKVLKQVHPDTGISSKAMSIMNSFVNDIFERIAAEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSSK 122
                                    37        47        57        67        77        87        97       107       117

Chain E from PDB  Type:PROTEIN  Length:99
 aligned with H3_DROME | P02299 from UniProtKB/Swiss-Prot  Length:136

    Alignment length:99
                                    47        57        67        77        87        97       107       117       127         
             H3_DROME    38 KPHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEASEAYLVGLFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA 136
               SCOP domains d2pyoe_ E: Histone H3                                                                               SCOP domains
               CATH domains 2pyoE00 E:37-135 Histone, subunit A                                                                 CATH domains
           Pfam domains (1) --------------------Histone-2pyoE01 E:57-131                                                   ---- Pfam domains (1)
           Pfam domains (2) --------------------Histone-2pyoE02 E:57-131                                                   ---- Pfam domains (2)
         Sec.struct. author .......hhhhhhhhhhhhhh.....hhhhhhhhhhhhhhh.....eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------HISTONE_H------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------- Transcript
                 2pyo E  37 KPHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEASEAYLVGLFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA 135
                                    46        56        66        76        86        96       106       116       126

Chain F from PDB  Type:PROTEIN  Length:88
 aligned with H4_DROME | P84040 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:88
                                    25        35        45        55        65        75        85        95        
             H4_DROME    16 AKRHRKVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG 103
               SCOP domains d2pyof_ F: Histone H4                                                                    SCOP domains
               CATH domains 2pyoF00 F:15-102 Histone, subunit A                                                      CATH domains
           Pfam domains (1) ---------Histone-2pyoF01 F:24-93                                               --------- Pfam domains (1)
           Pfam domains (2) ---------Histone-2pyoF02 F:24-93                                               --------- Pfam domains (2)
         Sec.struct. author .........hhhhhhhhhhhhhhhhhh...ee..hhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhh....ee.... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------- Transcript
                 2pyo F  15 AKRHRKVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG 102
                                    24        34        44        54        64        74        84        94

Chain G from PDB  Type:PROTEIN  Length:109
 aligned with H2A_DROME | P84051 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:109
                                    21        31        41        51        61        71        81        91       101       111         
            H2A_DROME    12 GKAKSRSNRAGLQFPVGRIHRLLRKGNYAERVGAGAPVYLAAVMEYLAAEVLELAGNAARDNKKTRIIPRHLQLAIRNDEELNKLLSGVTIAQGGVLPNIQAVLLPKKT 120
               SCOP domains d2pyog_ G: automated matches                                                                                  SCOP domains
               CATH domains 2pyoG00 G:11-119 Histone, subunit A                                                                           CATH domains
           Pfam domains (1) -----Histone-2pyoG01 G:16-89                                                   ------------------------------ Pfam domains (1)
           Pfam domains (2) -----Histone-2pyoG02 G:16-89                                                   ------------------------------ Pfam domains (2)
         Sec.struct. author ....hhhhhhh...hhhhhhhhhhh.....ee.hhhhhhhhhhhhhhhhhhhhhhhhhhhh....eehhhhhhhhhhhhhhhhhhh...ee.........hhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------HISTONE--------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------- Transcript
                 2pyo G  11 GKAKSRSNRAGLQFPVGRIHRLLRKGNYAERVGAGAPVYLAAVMEYLAAEVLELAGNAARDNKKTRIIPRHLQLAIRNDEELNKLLSGVTIAQGGVLPNIQAVLLPKKT 119
                                    20        30        40        50        60        70        80        90       100       110

Chain H from PDB  Type:PROTEIN  Length:95
 aligned with H2B_DROME | P02283 from UniProtKB/Swiss-Prot  Length:123

    Alignment length:95
                                    38        48        58        68        78        88        98       108       118     
            H2B_DROME    29 RKRKESYAIYIYKVLKQVHPDTGISSKAMSIMNSFVNDIFERIAAEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSSK 123
               SCOP domains d2pyoh_ H: automated matches                                                                    SCOP domains
               CATH domains 2pyoH00 H:28-122 Histone, subunit A                                                             CATH domains
           Pfam domains (1) Histone-2pyoH01 H:28-98                                                ------------------------ Pfam domains (1)
           Pfam domains (2) Histone-2pyoH02 H:28-98                                                ------------------------ Pfam domains (2)
         Sec.struct. author ......hhhhhhhhhhhhh...eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------HISTONE_H2B            ----------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------- Transcript
                 2pyo H  28 RKRKESYAIYIYKVLKQVHPDTGISSKAMSIMNSFVNDIFERIAAEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSSK 122
                                    37        47        57        67        77        87        97       107       117

Chain I from PDB  Type:DNA  Length:147
                                                                                                                                                                                   
                 2pyo I -73 ATCAATATCCACCTGCAGATACTACCAAAAGTGTATTTGGAAACTGCTCCATCAAAAGGCATGTTCAGCTGGAATCCAGCTGAACATGCCTTTTGATGGAGCAGTTTCCAAATACACTTTTGGTAGTATCTGCAGGTGGATATTGAT  73
                                   -64       -54       -44       -34       -24       -14        -4         6        16        26        36        46        56        66

Chain J from PDB  Type:DNA  Length:147
                                                                                                                                                                                   
                 2pyo J -73 ATCAATATCCACCTGCAGATACTACCAAAAGTGTATTTGGAAACTGCTCCATCAAAAGGCATGTTCAGCTGGATTCCAGCTGAACATGCCTTTTGATGGAGCAGTTTCCAAATACACTTTTGGTAGTATCTGCAGGTGGATATTGAT  73
                                   -64       -54       -44       -34       -24       -14        -4         6        16        26        36        46        56        66

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

Asymmetric/Biological Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: All alpha proteins (14657)

Fold: Histone-fold (277)

Superfamily: Histone-fold (277)

Family: Nucleosome core histones (247)

Protein domain: automated matches (34)

Fruit fly (Drosophila melanogaster) [TaxId: 7227] (2)

1a	d2pyoc_	C:
1b	d2pyod_	D:
1c	d2pyog_	G:
1d	d2pyoh_	H:

Protein domain: Histone H3 (58)

Fruit fly (Drosophila melanogaster) [TaxId: 7227] (1)

2a	d2pyoa_	A:
2b	d2pyoe_	E:

Protein domain: Histone H4 (60)

Fruit fly (Drosophila melanogaster) [TaxId: 7227] (2)

3a	d2pyob_	B:
3b	d2pyof_	F:

Asymmetric/Biological Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Mainly Alpha (13335)

Architecture: Orthogonal Bundle (10391)

Topology: Histone, subunit A (62)

Homologous Superfamily: Histone, subunit A (62)

Human (Homo sapiens) (28)

1a	2pyoA00	A:37-135
1b	2pyoF00	F:15-102
1c	2pyoC00	C:13-120
1d	2pyoG00	G:11-119
1e	2pyoB00	B:23-102
1f	2pyoE00	E:37-135
1g	2pyoD00	D:28-122
1h	2pyoH00	H:28-122

Asymmetric/Biological Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: Histone (49)

Family: Histone (46)

Drosophila melanogaster (Fruit fly) (3)

1a	Histone-2pyoG01	G:16-89
1b	Histone-2pyoG02	G:16-89
1c	Histone-2pyoH01	H:28-98
1d	Histone-2pyoH02	H:28-98
1e	Histone-2pyoE01	E:57-131
1f	Histone-2pyoE02	E:57-131
1g	Histone-2pyoF01	F:24-93
1h	Histone-2pyoF02	F:24-93

Asymmetric/Biological Unit(hide GO term definitions)

Chain A,E (H3_DROME | P02299)

molecular function
	GO:0003677	DNA binding	Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
	GO:0031492	nucleosomal DNA binding	Interacting selectively and non-covalently with the DNA portion of a nucleosome.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	GO:0046982	protein heterodimerization activity	Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
biological process
	GO:0006333	chromatin assembly or disassembly	The formation or destruction of chromatin structures.
	GO:0006334	nucleosome assembly	The aggregation, arrangement and bonding together of a nucleosome, the beadlike structural units of eukaryotic chromatin composed of histones and DNA.
cellular component
	GO:0035059	RCAF complex	A protein complex that facilitates the assembly of nucleosomes on to newly synthesized DNA. In Drosophila, the complex comprises ASF1 and histones H3 and H4.
	GO:0005694	chromosome	A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
	GO:0000790	nuclear chromatin	The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome in the nucleus.
	GO:0000788	nuclear nucleosome	A complex comprised of DNA wound around a multisubunit core and associated proteins, which forms the primary packing unit of DNA in the nucleus into higher order structures.
	GO:0000786	nucleosome	A complex comprised of DNA wound around a multisubunit core and associated proteins, which forms the primary packing unit of DNA into higher order structures.
	GO:0005634	nucleus	A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.
	GO:0005700	polytene chromosome	A type of chromosome in a polyploid cell, formed when multiple copies of homologous chromosomes are aligned side by side to give a giant chromosome in which distinct chromosome bands are readily visible.

Chain B,F (H4_DROME | P84040)

molecular function
	GO:0003677	DNA binding	Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	GO:0046982	protein heterodimerization activity	Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
biological process
	GO:0006352	DNA-templated transcription, initiation	Any process involved in the assembly of the RNA polymerase preinitiation complex (PIC) at the core promoter region of a DNA template, resulting in the subsequent synthesis of RNA from that promoter. The initiation phase includes PIC assembly and the formation of the first few bonds in the RNA chain, including abortive initiation, which occurs when the first few nucleotides are repeatedly synthesized and then released. The initiation phase ends just before and does not include promoter clearance, or release, which is the transition between the initiation and elongation phases of transcription.
	GO:0051298	centrosome duplication	The replication of a centrosome, a structure comprised of a pair of centrioles and peri-centriolar material from which a microtubule spindle apparatus is organized.
	GO:0006333	chromatin assembly or disassembly	The formation or destruction of chromatin structures.
	GO:0016321	female meiosis chromosome segregation	The cell cycle process in which genetic material, in the form of chromosomes, is organized and then physically separated and apportioned to two or more sets during the meiotic cell cycle in a female.
	GO:0006334	nucleosome assembly	The aggregation, arrangement and bonding together of a nucleosome, the beadlike structural units of eukaryotic chromatin composed of histones and DNA.
cellular component
	GO:0035059	RCAF complex	A protein complex that facilitates the assembly of nucleosomes on to newly synthesized DNA. In Drosophila, the complex comprises ASF1 and histones H3 and H4.
	GO:0005694	chromosome	A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
	GO:0005811	lipid droplet	An intracellular non-membrane-bounded organelle comprising a matrix of coalesced lipids surrounded by a phospholipid monolayer. May include associated proteins.
	GO:0000228	nuclear chromosome	A chromosome that encodes the nuclear genome and is found in the nucleus of a eukaryotic cell during the cell cycle phases when the nucleus is intact.
	GO:0000786	nucleosome	A complex comprised of DNA wound around a multisubunit core and associated proteins, which forms the primary packing unit of DNA into higher order structures.
	GO:0005634	nucleus	A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

Chain C,G (H2A_DROME | P84051)

molecular function
	GO:0003677	DNA binding	Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
	GO:0046982	protein heterodimerization activity	Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
biological process
	GO:0051298	centrosome duplication	The replication of a centrosome, a structure comprised of a pair of centrioles and peri-centriolar material from which a microtubule spindle apparatus is organized.
	GO:0006333	chromatin assembly or disassembly	The formation or destruction of chromatin structures.
	GO:0006325	chromatin organization	Any process that results in the specification, formation or maintenance of the physical structure of eukaryotic chromatin.
	GO:0006342	chromatin silencing	Repression of transcription by altering the structure of chromatin, e.g. by conversion of large regions of DNA into an inaccessible state often called heterochromatin.
	GO:0007526	larval somatic muscle development	The process whose specific outcome is the progression of the larval somatic muscle over time, from its formation to the mature structure.
	GO:0006334	nucleosome assembly	The aggregation, arrangement and bonding together of a nucleosome, the beadlike structural units of eukaryotic chromatin composed of histones and DNA.
cellular component
	GO:0005694	chromosome	A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
	GO:0005811	lipid droplet	An intracellular non-membrane-bounded organelle comprising a matrix of coalesced lipids surrounded by a phospholipid monolayer. May include associated proteins.
	GO:0000790	nuclear chromatin	The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome in the nucleus.
	GO:0000788	nuclear nucleosome	A complex comprised of DNA wound around a multisubunit core and associated proteins, which forms the primary packing unit of DNA in the nucleus into higher order structures.
	GO:0000786	nucleosome	A complex comprised of DNA wound around a multisubunit core and associated proteins, which forms the primary packing unit of DNA into higher order structures.
	GO:0005634	nucleus	A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.
	GO:0005700	polytene chromosome	A type of chromosome in a polyploid cell, formed when multiple copies of homologous chromosomes are aligned side by side to give a giant chromosome in which distinct chromosome bands are readily visible.
	GO:0005704	polytene chromosome band	A stretch of densely packed chromatin along the polytene chromosome, visible as a morphologically distinct band.

Chain D,H (H2B_DROME | P02283)

molecular function
	GO:0003677	DNA binding	Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	GO:0046982	protein heterodimerization activity	Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
biological process
	GO:0006333	chromatin assembly or disassembly	The formation or destruction of chromatin structures.
	GO:0006334	nucleosome assembly	The aggregation, arrangement and bonding together of a nucleosome, the beadlike structural units of eukaryotic chromatin composed of histones and DNA.
cellular component
	GO:0035267	NuA4 histone acetyltransferase complex	A complex having histone acetylase activity on chromatin, as well as ATPase, DNA helicase and structural DNA binding activities. The complex is thought to be involved in double-strand DNA break repair. Subunits of the human complex include HTATIP/TIP60, TRRAP, RUVBL1, BUVBL2, beta-actin and BAF53/ACTL6A. In yeast, the complex has 13 subunits, including the catalytic subunit Esa1 (homologous to human Tip60).
	GO:0005694	chromosome	A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
	GO:0005811	lipid droplet	An intracellular non-membrane-bounded organelle comprising a matrix of coalesced lipids surrounded by a phospholipid monolayer. May include associated proteins.
	GO:0000788	nuclear nucleosome	A complex comprised of DNA wound around a multisubunit core and associated proteins, which forms the primary packing unit of DNA in the nucleus into higher order structures.
	GO:0000786	nucleosome	A complex comprised of DNA wound around a multisubunit core and associated proteins, which forms the primary packing unit of DNA into higher order structures.
	GO:0005634	nucleus	A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

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	H2A_DROME \| P84051	:	2nqb 4qlc 4x23
	H2B_DROME \| P02283	:	2nqb 4qlc 4x23 5cve
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(no "Related Entries Specified in the PDB File" available for 2PYO)

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 18)

Sites (17, 17)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

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PROSITE Motifs (3, 6)

Exons (0, 0)

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SCOP Domains (3, 8)

CATH Domains (1, 8)

Pfam Domains (1, 8)

Gene Ontology (23, 54)

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