3C1B - JenaLib

Asym./Biol. Unit (Jmol Viewer)

Title :   THE EFFECT OF H3 K79 DIMETHYLATION AND H4 K20 TRIMETHYLATION ON NUCLEOSOME AND CHROMATIN STRUCTURE

Authors :   X. Lu, M. Simon, J. Chodaparambil, J. Hansen, K. Shokat, K. Luger

Date :   22 Jan 08 (Deposition) - 07 Oct 08 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.20

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

Keywords :   Nucleosome, Dimethylated Histone, Trimethylated Histone, Methylation, Nucleosomal Surface, Histone Modification, Nucleosomal Array, Chromatin, Acetylation, Chromosomal Protein, Dna-Binding, Nucleosome Core, Nucleus, Phosphoprotein, Ubl Conjugation, Structural Protein/Dna Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   X. Lu, M. D. Simon, J. V. Chodaparambil, J. C. Hansen, K. M. Shokat, K. Luger
The Effect Of H3K79 Dimethylation And H4K20 Trimethylation On Nucleosome And Chromatin Structure.
Nat. Struct. Mol. Biol. V. 15 1122 2008
PubMed-ID: 18794842 | Reference-DOI: 10.1038/NSMB.1489
(for further references see the PDB file header)

Molecule 1 - HISTONE H3-LIKE
	Chains	:	A, E
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Gene	:	HISTONE H3
	Organism Common	:	CLAWED FROG,COMMON PLATANNA,PLATANNA
	Organism Scientific	:	XENOPUS LAEVIS
	Organism Taxid	:	8355

Molecule 2 - HISTONE H4
	Chains	:	B, F
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Gene	:	HISTONE H4
	Organism Common	:	CLAWED FROG,COMMON PLATANNA,PLATANNA
	Organism Scientific	:	XENOPUS LAEVIS
	Organism Taxid	:	8355

Molecule 3 - HISTONE H2A TYPE 1
	Chains	:	C, G
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Gene	:	HISTONE H2A
	Organism Common	:	CLAWED FROG,COMMON PLATANNA,PLATANNA
	Organism Scientific	:	XENOPUS LAEVIS
	Organism Taxid	:	8355

Molecule 4 - HISTONE 2, H2BF
	Chains	:	D, H
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Gene	:	HIST2H2BF, TGAS058P09.1-001
	Organism Common	:	WESTERN CLAWED FROG
	Organism Scientific	:	XENOPUS (SILURANA) TROPICALIS
	Organism Taxid	:	8364

Molecule 5 - PALINDROMIC 146BP HUMAN ALPHA SATELLITE DNA
	Chains	:	I, J
	Engineered	:	YES
	Synthetic	:	YES

		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 (1, 1)

No.	Name	Count	Type	Full Name
1	ML3	1	Mod. Amino Acid	2-{[(2R)-2-AMINO-2-CARBOXYETHYL]SULFANYL}-N,N,N-TRIMETHYLETHANAMINIUM

(no "Site" information available for 3C1B)

(no "SS Bond" information available for 3C1B)

(no "Cis Peptide Bond" information available for 3C1B)

(no "SAP(SNP)/Variant" information available for 3C1B)

Asymmetric/Biological Unit (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	HISTONE_H2A	PS00046	Histone H2A signature.	H2A1_XENLA	22-28	2	C:821-827 G:1021-1027
2	HISTONE_H3_2	PS00959	Histone H3 signature 2.	H3C_XENLA	67-75	2	A:466-474 E:666-674
2	HISTONE_H3_2	PS00959	Histone H3 signature 2.	H32_XENLA	67-75	2	A:466-474 E:666-674

(no "Exon" information available for 3C1B)

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:98
 aligned with H32_XENLA | P84233 from UniProtKB/Swiss-Prot  Length:136

    Alignment length:98
                                    48        58        68        78        88        98       108       118       128        
           H32_XENLA     39 PHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEASEAYLVGLFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA  136
               SCOP domains d3c1ba_ A: Histone H3                                                                              SCOP domains
               CATH domains 3c1bA00 A:438-535 Histone, subunit A                                                               CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ......hhhhhhhhhhhhhh.....hhhhhhhhhhhhhhh.....eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ----------------------------HISTONE_H------------------------------------------------------------- PROSITE (2)
                 Transcript -------------------------------------------------------------------------------------------------- Transcript
                3c1b A  438 PHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEASEAYLVALFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA  535
                                   447       457       467       477       487       497       507       517       527

Chain A from PDB  Type:PROTEIN  Length:98
 aligned with H3C_XENLA | P02302 from UniProtKB/Swiss-Prot  Length:136

    Alignment length:98
                                    48        58        68        78        88        98       108       118       128        
           H3C_XENLA     39 PHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQRSAVMALQEASEAYLVALFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA  136
               SCOP domains d3c1ba_ A: Histone H3                                                                              SCOP domains
               CATH domains 3c1bA00 A:438-535 Histone, subunit A                                                               CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ......hhhhhhhhhhhhhh.....hhhhhhhhhhhhhhh.....eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------HISTONE_H------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------- Transcript
                3c1b A  438 PHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEASEAYLVALFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA  535
                                   447       457       467       477       487       497       507       517       527

Chain B from PDB  Type:PROTEIN  Length:80
 aligned with H4_XENLA | P62799 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:80
                                    33        43        53        63        73        83        93       103
            H4_XENLA     24 RDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG  103
               SCOP domains d3c1bb_ B: Histone H4                                                            SCOP domains
               CATH domains 3c1bB00 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
                3c1b B   23 RDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG  102
                                    32        42        52        62        72        82        92       102

Chain C from PDB  Type:PROTEIN  Length:106
 aligned with H2A1_XENLA | P06897 from UniProtKB/Swiss-Prot  Length:130

    Alignment length:106
                                    24        34        44        54        64        74        84        94       104       114      
          H2A1_XENLA     15 AKTRSSRAGLQFPVGRVHRLLRKGNYAERVGAGAPVYLAAVLEYLTAEILELAGNAARDNKKTRIIPRHLQLAVRNDEELNKLLGGVTIAQGGVLPNIQSVLLPKK  120
               SCOP domains d3c1bc_ C: Histone H2A                                                                                     SCOP domains
               CATH domains 3c1bC00 C:814-919 Histone, subunit A                                                                       CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhh...hhhhhhhhhhhh....ee.hhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhhhhhhhhh..eee.........hhhhh... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------HISTONE-------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------- Transcript
                3c1b C  814 AKTRSSRAGLQFPVGRVHRLLRKGNYAERVGAGAPVYLAAVLEYLTAEILELAGNAARDNKKTRIIPRHLQLAVRNDEELNKLLGRVTIAQGGVLPNIQSVLLPKK  919
                                   823       833       843       853       863       873       883       893       903       913

Chain D from PDB  Type:PROTEIN  Length:95
 aligned with Q28D68_XENTR | Q28D68 from UniProtKB/TrEMBL  Length:126

    Alignment length:95
                                    41        51        61        71        81        91       101       111       121     
        Q28D68_XENTR     32 KTRKESYAIYVYKVLKQVHPDTGISSKAMSIMNSFVNDVFERIAGEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSAK  126
               SCOP domains d3c1bd_ D: Histone H2B                                                                          SCOP domains
               CATH domains 3c1bD00 D:1228-1322 Histone, subunit A                                                          CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ......hhhhhhhhhhhhh...eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------- Transcript
                3c1b D 1228 KTRKESYAIYVYKVLKQVHPDTGISSKAMSIMNSFVNDVFERIAGEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSAK 1322
                                  1237      1247      1257      1267      1277      1287      1297      1307      1317

Chain E from PDB  Type:PROTEIN  Length:99
 aligned with H32_XENLA | P84233 from UniProtKB/Swiss-Prot  Length:136

    Alignment length:99
                                    47        57        67        77        87        97       107       117       127         
           H32_XENLA     38 KPHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEASEAYLVGLFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA  136
               SCOP domains d3c1be_ E: Histone H3                                                                               SCOP domains
               CATH domains 3c1bE00 E:637-735 Histone, subunit A                                                                CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .......hhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhh...eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) -----------------------------HISTONE_H------------------------------------------------------------- PROSITE (2)
                 Transcript --------------------------------------------------------------------------------------------------- Transcript
                3c1b E  637 KPHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEASEAYLVALFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA  735
                                   646       656       666       676       686       696       706       716       726

Chain E from PDB  Type:PROTEIN  Length:99
 aligned with H3C_XENLA | P02302 from UniProtKB/Swiss-Prot  Length:136

    Alignment length:99
                                    47        57        67        77        87        97       107       117       127         
           H3C_XENLA     38 KPHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQRSAVMALQEASEAYLVALFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA  136
               SCOP domains d3c1be_ E: Histone H3                                                                               SCOP domains
               CATH domains 3c1bE00 E:637-735 Histone, subunit A                                                                CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .......hhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhh...eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------HISTONE_H------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------- Transcript
                3c1b E  637 KPHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKTDLRFQSSAVMALQEASEAYLVALFEDTNLCAIHAKRVTIMPKDIQLARRIRGERA  735
                                   646       656       666       676       686       696       706       716       726

Chain F from PDB  Type:PROTEIN  Length:87
 aligned with H4_XENLA | P62799 from UniProtKB/Swiss-Prot  Length:103

    Alignment length:87
                                    26        36        46        56        66        76        86        96       
            H4_XENLA     17 KRHRKVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG  103
               SCOP domains d3c1bf_ F: Histone H4                                                                   SCOP domains
               CATH domains 3c1bF00 F:216-302 Histone, subunit A                                                    CATH domains
               Pfam domains --------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ........hhhhhhhhhhhhhhhhhh...ee..hhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhh..eee.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------- Transcript
                3c1b F  216 KRHRkVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKTVTAMDVVYALKRQGRTLYGFGG  302
                                |  225       235       245       255       265       275       285       295       
                              220-ML3

Chain G from PDB  Type:PROTEIN  Length:103
 aligned with H2A1_XENLA | P06897 from UniProtKB/Swiss-Prot  Length:130

    Alignment length:103
                                    26        36        46        56        66        76        86        96       106       116   
          H2A1_XENLA     17 TRSSRAGLQFPVGRVHRLLRKGNYAERVGAGAPVYLAAVLEYLTAEILELAGNAARDNKKTRIIPRHLQLAVRNDEELNKLLGGVTIAQGGVLPNIQSVLLPK  119
               SCOP domains d3c1bg_ G: Histone H2A                                                                                  SCOP domains
               CATH domains 3c1bG00 G:1016-1118 Histone, subunit A                                                                  CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhh...hhhhhhhhhhhh....ee.hhhhhhhhhhhhhhhhhhhhhhhhhhhh....eehhhhhhhhhhhhhhhhhhh...ee.........hhhhh.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----HISTONE------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------- Transcript
                3c1b G 1016 TRSSRAGLQFPVGRVHRLLRKGNYAERVGAGAPVYLAAVLEYLTAEILELAGNAARDNKKTRIIPRHLQLAVRNDEELNKLLGRVTIAQGGVLPNIQSVLLPK 1118
                                  1025      1035      1045      1055      1065      1075      1085      1095      1105      1115

Chain H from PDB  Type:PROTEIN  Length:94
 aligned with Q28D68_XENTR | Q28D68 from UniProtKB/TrEMBL  Length:126

    Alignment length:94
                                    41        51        61        71        81        91       101       111       121    
        Q28D68_XENTR     32 KTRKESYAIYVYKVLKQVHPDTGISSKAMSIMNSFVNDVFERIAGEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSA  125
               SCOP domains d3c1bh_ H: Histone H2B                                                                         SCOP domains
               CATH domains 3c1bH00 H:1428-1521 Histone, subunit A                                                         CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ......hhhhhhhhhhhhh...eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------- Transcript
                3c1b H 1428 KTRKESYAIYVYKVLKQVHPDTGISSKAMSIMNSFVNDVFERIAGEASRLAHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSA 1521
                                  1437      1447      1457      1467      1477      1487      1497      1507      1517

Chain I from PDB  Type:DNA  Length:146
                                                                                                                                                                                   
                3c1b I    1 ATCAATATCCACCTGCAGATTCTACCAAAAGTGTATTTGGAAACTGCTCCATCAAAAGGCATGTTCAGCGGAATTCCGCTGAACATGCCTTTTGATGGAGCAGTTTCCAAATACACTTTTGGTAGAATCTGCAGGTGGATATTGAT  146
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140

Chain J from PDB  Type:DNA  Length:146
                                                                                                                                                                                   
                3c1b J  147 ATCAATATCCACCTGCAGATTCTACCAAAAGTGTATTTGGAAACTGCTCCATCAAAAGGCATGTTCAGCGGAATTCCGCTGAACATGCCTTTTGATGGAGCAGTTTCCAAATACACTTTTGGTAGAATCTGCAGGTGGATATTGAT  292
                                   156       166       176       186       196       206       216       226       236       246       256       266       276       286

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(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Mainly Alpha (13335)

Architecture: Orthogonal Bundle (10391)

Topology: Histone, subunit A (62)

Homologous Superfamily: Histone, subunit A (62)

Clawed frog,common platanna,platanna (Xenopus laevis) (3)

1a	3c1bA00	A:438-535
1b	3c1bE00	E:637-735
1c	3c1bG00	G:1016-1118
1d	3c1bC00	C:814-919
1e	3c1bB00	B:23-102
1f	3c1bF00	F:216-302
1g	3c1bD00	D:1228-1322
1h	3c1bH00	H:1428-1521

(no "Pfam Domain" information available for 3C1B)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A,E (H32_XENLA | P84233)

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.
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:0005654	nucleoplasm	That part of the nuclear content other than the chromosomes or the nucleolus.
	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 A,E (H3C_XENLA | P02302)

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.
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: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 B,F (H4_XENLA | P62799)

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: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: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 (H2A1_XENLA | P06897)

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.
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: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 D,H (Q28D68_XENTR | Q28D68)

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: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: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.

Asymmetric/Biological Unit
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	3c1b
		Family and Domain Information	:	ProDom \| SYSTERS
		General Structural Information	:	GlycoscienceDB \| MMDB \| NDB \| OCA \| PDB \| PDBe \| PDBj \| PDBsum \| PDBWiki \| PQS \| PROTEOPEDIA
		Orientation in Membranes	:	OPM
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		Secondary Structure	:	DSSP (structure derived) \| HSSP (homology derived)
		Structural Genomics	:	GeneCensus
		Structural Neighbours	:	CE \| VAST
		Structure Classification	:	CATH \| Dali \| SCOP
		Validation and Original Data	:	BMRB Data View \| BMRB Restraints Grid \| EDS \| PROCHECK \| RECOORD \| WHAT_CHECK

Access by UniProt ID/Accession number
	H2A1_XENLA \| P06897
		Comparative Protein Structure Models	:	ModBase
		Genomic Information	:	Ensembl
		Protein-protein Interaction	:	DIP
		Sequence, Family and Domain Information	:	InterPro \| Pfam \| SMART \| UniProtKB/SwissProt
	H32_XENLA \| P84233
		Comparative Protein Structure Models	:	ModBase
		Genomic Information	:	Ensembl
		Protein-protein Interaction	:	DIP
		Sequence, Family and Domain Information	:	InterPro \| Pfam \| SMART \| UniProtKB/SwissProt
	H3C_XENLA \| P02302
		Comparative Protein Structure Models	:	ModBase
		Genomic Information	:	Ensembl
		Protein-protein Interaction	:	DIP
		Sequence, Family and Domain Information	:	InterPro \| Pfam \| SMART \| UniProtKB/SwissProt
	H4_XENLA \| P62799
		Comparative Protein Structure Models	:	ModBase
		Genomic Information	:	Ensembl
		Protein-protein Interaction	:	DIP
		Sequence, Family and Domain Information	:	InterPro \| Pfam \| SMART \| UniProtKB/SwissProt
	Q28D68_XENTR \| Q28D68
		Comparative Protein Structure Models	:	ModBase
		Genomic Information	:	Ensembl
		Protein-protein Interaction	:	DIP
		Sequence, Family and Domain Information	:	InterPro \| Pfam \| SMART \| UniProtKB/TrEMBL

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		General Enzyme Information	:	BRENDA \| EC-PDB \| Enzyme \| IntEnz
		Pathway	:	KEGG \| MetaCyc

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		Disease Information	:	OMIM

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		Age Related Information	:	GenAge

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		Domain Information	:	XDom
		Interatomic Contacts of Structural Units	:	CSU
		Ligand-protein Contacts	:	LPC
		Protein Cavities	:	castP
		Sequence and Secondary Structure	:	PDBCartoon
		Structure Alignment	:	STRAP(Java WebStart application, automatic local installation, requires Java; full application with system access!)
		Structure and Sequence Browser	:	STING

Access by UniProt ID/Accession number
	H2A1_XENLA \| P06897
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)
	H32_XENLA \| P84233
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)
	H3C_XENLA \| P02302
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)
	H4_XENLA \| P62799
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)
	Q28D68_XENTR \| Q28D68
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (1, 1)

Sites (0, 0)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (2, 4)

Exons (0, 0)

Sequences/Alignments

Classification and Annotation

SCOP Domains (4, 8)

CATH Domains (1, 8)

Pfam Domains (0, 0)

Gene Ontology (10, 32)

Visualization

Interactive Views

Still Images

Databases and Analysis Tools

Databases

Analysis Tools

Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File