Primary Citation PubMed: 9305837
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Alteration of the nucleosomal DNA path in the crystal structure of a human nucleosome core particle.
(2005) Nucleic Acids Res 33
PubMed: 15951514 | PubMedCentral: PMC1150222 | DOI: 10.1093/nar/gki663
Molecular replacement, with the PDB entry 1AOI ( 12 ) as the search model, was used to obtain the initial phases via Amore ( 27 ).
The crystal structure was determined by the molecular replacement method, using the previously published Xla -NCP structure (PDB entry 1AOI) ( 12 ) as a search model.
Publication Year: 2005
Structural insight into gene transcriptional regulation and effector binding by the Lrp/AsnC family.
(2006) Nucleic Acids Res 34
PubMed: 16528101 | PubMedCentral: PMC1401507 | DOI: 10.1093/nar/gkl009
Modelled DNA is shown as a grey surface and based on existing crystal structures of wrapped DNA (PDB code 1AOI) ( 57 ) and electron microscopy studies of LrpC ( 27 ).
Publication Year: 2006
The tale beyond the tail: histone core domain modifications and the regulation of chromatin structure.
PubMed: 16714444 | PubMedCentral: PMC1464108 | DOI: 10.1093/nar/gkl338
( C ) Surface modifications are modeled on the crystal structure of the nucleosome (pdb file 1AOI) ( 10 ).
Insights into protein-DNA interactions through structure network analysis.
(2008) PLoS Comput Biol 4
PubMed: 18773096 | PubMedCentral: PMC2518215 | DOI: 10.1371/journal.pcbi.1000170
Class 1 Class 2 Class 3 Class 4 Class 5 Class 6 Class 7 P-p clusters only P-S clusters only P-B clusters only P-p and P-S clusters (no P-B clusters) P-S and P-B clusters (no P-p clusters) P-p and P-B ... lusters (no P-S clusters) P-p, P-S, and P-B clusters are present Overlapping clusters Non-overlapping clusters Overlapping clusters Non-overlapping clusters Overlapping clusters Non-overlapping clusters Overlapping P-p, P-B, and P-S clusters Non-overlapping P-p, P-B, and P-S clusters P-p and P-S clusters overlap but not P-B clusters P-S and P-B clusters overlap but not P-p clusters P-p and P-B clusters overlap but not P-S clusters P-P, P-B and P-S clusters occur separately β-Hairpin β-Hairpin Zinc coordinating group Enzymes β-Hairpin β-Hairpin Other α-helices Others Helix turn helix – β-Hairpin β-Sheet Enzymes β-Hairpin 1cma- a 1azp- 1zaa- 1a31- 1ecr- 1bnz- 1ckt- 1ramA 1apl- 1bdt- 1d3u- 1bss- 1ihf- a Enzymes 1bf4- 1a35- 1xbr- a β-Sheet 1vkx- 1lli- Enzymes 1tgh- 1ipp- β-Sheet 7ice- Enzymes 1bhm- a Enzymes 1c9bB Zipper type Others 1cyq- Enzymes Helix turn helix 1vol- Helix turn helix 2dnj- 1dnk- 1bnk- 1cdw- 1an4- 1a3qA 1dctA 2bdp- 1tc3- Enzymes 3orc- 2rve- 1t7pA 1bpx- Enzymes 1hlo- a 1bf5-* 1rv5- 3ktq- 1a74- a Other α-helices 3bam- 1qss- 10mh- 1nfkA 4skn- Helix turn helix 1ssp- 1skn- Helix turn helix 1qsy- 1clq- Zinc coordinating group 5mht- 1fjl- a 1vas- Zipper type 6pax- 2bpf- 1pvi- a 1a1g- Helix turn helix Zinc coordinating group 3pvi- 1ysa- a Other α-helices 2ktq- 1tau- 1aay-* 1gdt- a 1cit- Helix turn helix 1b3t- a 2ssp- 2pvi- 1d66-* 1ignA a 1fok- Zinc coordinating group 4ktq- Other α-helices 1ubd-* 1rpe- 1hcr- a 1lat- Helix turn helix 1qrv- 1zme- 6cro- 1mnm- a 1akh- Zipper type Zinc coordinating group 1yrn- a 1hddC a 1an2- 2gli- a 3cro- a 1pdn- Zipper type Zinc coordinating group 3hddA 1a02- 1a6y- Other α-helices 1a0a- 1aoi- Zinc coordinating group 1glu- 1tsr- a 2nll- a These protein–DNA complexes are also present in DS3 (see Materials and Methods section).
Publication Year: 2008
Small local variations in B-form DNA lead to a large variety of global geometries which can accommodate most DNA-binding protein motifs.
(2009) BMC Struct Biol 9
PubMed: 19393049 | PubMedCentral: PMC2687451 | DOI: 10.1186/1472-6807-9-24
It is also interesting to note that the ROC calculated for the 76 basepair fragments in 1KX3 and 1KX5 are 39.8 Å and 39.4 Å respectively, while that for a 2.8 Å resolution stru... ture (1AOI [ 89 ]) is calculated as 41.5 Å, indicating that the DNA in different nucleosome structures has small variations in curvature.
Publication Year: 2009
Polycomb group genes: keeping stem cell activity in balance.
(2008) PLoS Biol 6
PubMed: 18447587 | PubMedCentral: PMC2689701 | DOI: 10.1371/journal.pbio.0060113
Table 1 Mouse PcG Knockout Phenotype Figure 1 Nucleosome Crystal Structure and Potential Effect of Mono-Ubiquinated H2A on Chromatin Accessibility (A) Representation of the nucleosome crystal structur... at 2.8 Å resolution (Protein Data Bank #1AOI) [ 31 ].
Using DNA mechanics to predict in vitro nucleosome positions and formation energies.
(2009) Nucleic Acids Res 37
PubMed: 19509309 | PubMedCentral: PMC2724288 | DOI: 10.1093/nar/gkp475
The 146- and 147-bp long DNAs analyzed in X-ray crystallographic studies of nucleosomes (PDB codes 1aoi and 1kx5, respectively) were prepared as described ( 26 ) using clones supplied by Professors K.... Luger and T.J. Richmond, respectively.
X146 and X147 are 146 and 147 bp DNA sequences from nucleosome crystal structures 1aoi ( 10 ) and 1kx5 ( 2 ).
Super-coil me: sizing up centromeric nucleosomes.
(2009) J Cell Biol 186
PubMed: 19704018 | PubMedCentral: PMC2733755 | DOI: 10.1083/jcb.200908012
(Structural representations were created using Chimera and PDBID: 1aoi ( 1 ).
The transparent image shown was adapted from the RCSB's PDB Molecule of the Month by David Goodsell using PDBID: 1aoi ( 1 ) doi: 10.2210/rcsb_pdb/mom_2000_7 .
Mechanism of chromatin remodeling and recovery during passage of RNA polymerase II.
(2009) Nat Struct Mol Biol 16
PubMed: 19935686 | PubMedCentral: PMC2919570 | DOI: 10.1038/nsmb.1689
To evaluate the possibility of Ø-loop formation by Pol II, we modeled the Ø-loop by docking the high-resolution structures of yeast Pol II EC onto the nucleosome (PDB IDs 1aoi and 1y1w... see refs.
The structures of a nucleosome and yeast Pol II EC (PDB IDs 1aoi and 1y1w, see refs.
An ensemble of B-DNA dinucleotide geometries lead to characteristic nucleosomal DNA structure and provide plasticity required for gene expression.
(2011) BMC Struct Biol 11
PubMed: 21208404 | PubMedCentral: PMC3031206 | DOI: 10.1186/1472-6807-11-1
PDB id d/l local I max /I min I m a x + I m i d I m i n ROC (Å) 1KX4 0.707 (0.018) 5.9 (0.5) 11.1 (1.1) 41.9 (2.0) 2NZD 0.707 (0.020) 5.8 (0.5) 11.0 (1.0) 41.8 (2.0) 1U35 0.710 (0.017) 5.9 (0.... ) 11.1 (1.1) 42.0 (1.9) 2F8N 0.714 (0.017) 5.9 (0.5) 11.1 (1.1) 41.9 (2.0) 1AOI 0.710 (0.019) 5.9 (0.5) 11.0 (1.0) 42.0 (2.0) 1KX3 0.707 (0.020) 5.9 (0.5) 11.0 (1.0) 41.7 (2.0) 2CV5 0.708 (0.017) 5.9 (0.5) 11.1 (1.0) 41.9 (1.9) 1EQZ 0.712 (0.018) 5.9 (0.5) 11.1 (1.0) 41.8 (2.0) 1F66 0.708 (0.016) 5.8 (0.5) 11.0 (1.0) 41.9 (2.1) 1M18 0.713 (0.017) 5.9 (0.5) 11.1 (1.0) 42.2 (2.0) 1M19 0.716 (0.017) 6.0 (0.5) 11.2 (1.1) 42.0 (1.9) 1M1A 0.712 (0.017) 5.9 (0.5) 11.1 (1.0) 42.0 (1.8) 1P34 0.708 (0.019) 5.9 (0.5) 11.1 (1.1) 42.0 (2.1) 1P3A 0.708 (0.019) 5.9 (0.5) 11.0 (1.0) 41.9 (2.0) 1P3B 0.710 (0.019) 5.9 (0.5) 11.1 (1.0) 41.8 (2.0) 1P3F 0.710 (0.019) 5.9 (0.5) 11.1 (1.0) 41.8 (2.0) 1P3G 0.709 (0.019) 5.9 (0.5) 11.1 (1.0) 42.0 (2.0) 1P3I 0.708 (0.019) 5.9 (0.5) 11.1 (1.0) 41.9 (2.0) 1P3K 0.705 (0.020) 5.9 (0.5) 11.0 (1.0) 41.9 (2.0) 1P3L 0.710 (0.019) 5.9 (0.5) 11.1 (1.0) 42.0 (2.0) 1P3M 0.711 (0.020) 5.9 (0.5) 11.1 (1.0) 42.0 (2.0) 1P3O 0.708 (0.020) 5.9 (0.5) 11.0 (1.0) 41.9 (2.0) 1P3P 0.709 (0.019) 5.9 (0.5) 11.1 (1.0) 41.9 (2.0) 1S32 0.709 (0.019) 5.9 (0.4) 11.0 (0.9) 41.9 (1.9) 1ZLA 0.708 (0.019) 5.9 (0.5) 11.0 (1.0) 41.8 (2.0) 2NQB 0.708 (0.020) 5.8 (0.5) 11.0 (1.1) 41.9 (2.1) 3C1B 0.706 (0.019) 5.9 (0.5) 11.1 (1.0) 42.0 (2.0) 1KX5 0.714 (0.018) 6.0 (0.6) 11.2 (1.1) 41.9 (2.0) 2PYO 0.712 (0.019) 5.9 (0.6) 11.2 (1.1) 41.9 (2.1) Discussion Nucleosomal DNA is B-like at the dinucleotide step level An analysis of the twenty-nine nucleosome X-ray crystal structures of better than 3 Å resolution reveals significant dinucleotide level structural variability in nucleosomal DNA, despite limited variation in sequence, with only six unique sequences, of which only one differs significantly from the other five.
All the structures corresponding to sequences 1 (PDB id 1KX4 ), 2 (PDB id 2NZD ), 4 (PDB id's 1AOI , 1KX3 and 2CV5 ) and 6 (PDB id's 1KX5 and 2PYO ), as well as one structure corresponding to sequence 3 (PDB id 2F8N ) and two structures corresponding to sequence 5 (PDB id's 1EQZ and 2NQB ) comprise of wild-type histones, though the histone sequence might vary at a few amino acid positions depending on the organism from which it was derived.
Sequences 1 and 2 had only one corresponding structure, namely 1KX4 [ 15 ] and 2NZD [ 31 ] respectively, sequences 3 and 6 had two corresponding structures, namely 1U35 [ 49 ] and 2F8N [ 31 ], and 1KX5 [ 15 ] and 2PYO [ 50 ] respectively, sequence 4 had three corresponding structures, namely 1AOI [ 51 ], 1KX3 [ 15 ] and 2CV5 [ 27 ], while the remaining twenty structures ( 1EQZ [ 52 ], 1F66 [ 53 ], 1M18 , 1M19 , 1M1A [ 54 ], 1P34 , 1P3A , 1P3B , 1P3F , 1P3G , 1P3I , 1P3K , 1P3L , 1P3M , 1P3O , 1P3P [ 55 ], 1S32 [ 56 ], 1ZLA [ 57 ], 2NQB [ 31 ], 3C1B [ 58 ]) correspond to sequence 5.
Publication Year: 2011
PubMed ID is not available.
Published in 2011
In the figure, this structural feature of the nucleosome-nucleosome stacking interface is illustrated using the 1AOI nucleosome core particle crystal structure (top).
Biophysical analysis and small-angle X-ray scattering-derived structures of MeCP2-nucleosome complexes.
(2011) Nucleic Acids Res 39
PubMed: 21278419 | PubMedCentral: PMC3105411 | DOI: 10.1093/nar/gkr005
( A ) The crystal structure of the nucleosome core particle [PDB entry 1AOI, ( 22 )], which consists of two copies each of H2A (yellow), H2B (red), H3 (blue), H4 (green) and 147 bp of DNA (gra... ), with the histone tails removed, serves as a reference.
( C ) (Left panel) Experimental scattering data (red) superimposed with simulated data from the crystal structure (black), generated with the program CRYSOL ( 41 ) with PDB entry 1AOI as input (histone tails removed from the model).
The experimental scattering data and the P(r) functions for this particle superimpose very well with scattering data simulated from the nucleosome crystal structure (pdb entry 1AOI, flexible histone tails removed; Figure 5 C) using the program CRYSOL ( 41 ).
( B.2 ) Experimental scattering data for W-Nuc165 (red), simulated data from the crystal structure 1AOI (histone tails removed, black) and simulated data from a model for W-Nuc165 (blue) are superimposed.
Bridging the resolution gap in structural modeling of 3D genome organization.
(2011) PLoS Comput Biol 7
PubMed: 21779160 | PubMedCentral: PMC3136432 | DOI: 10.1371/journal.pcbi.1002125
The DNA then wraps around histone proteins forming nucleosomes ([C], the complex between nucleosome core particles and DNA from PDB entry 1AOI  ).
Statistical investigation of position-specific deformation pattern of nucleosome DNA based on multiple conformational properties.
(2011) Bioinformation 7
PubMed: 22125381 | PubMedCentral: PMC3218313 | DOI: null
Methodology Structural data of NCPs The experimental database is constructed by collecting 6870 base pair steps from 48 nucleosome crystal structures in the Protein Data Bank (PDB), including 1AOI, 1E... Z, 1F66, 1ID3, 1KX5, 1KX4, 1KX3, 1M1A, 1M19, 1M18, 1P3P, 1P3O, 1P3M, 1P3L, 1P3K, 1P3I, 1P3G, 1P3F, 1P3B, 1P3A, 1P34, 1S32, 2CV5, 1U35, 1ZLA, 2F8N, 2FJ7, 2NZD, 2NQB, 2PYO, 3B6G, 3B6F, 3C1C, 3C1B, 3KUY, 3LJA, 3KWQ, 3LEL, 3AFA, 3A6N, 3MGS, 3MGR, 3MGQ, 3MGP, 3KXB, 3MVD, 3LZ0 and 3LZ1.
Characterization of chromoshadow domain-mediated binding of heterochromatin protein 1? (HP1?) to histone H3.
(2012) J Biol Chem 287
PubMed: 22493481 | PubMedCentral: PMC3365711 | DOI: 10.1074/jbc.M111.337204
A , space-filling representation of the H3 residues that are significantly shifted ( yellow ) or “quenched” ( red ) on addition of CSDα, mapped onto the nucleosome (Protein Dat... Bank code 1AOI ( 30 )).
Publication Year: 2012
The role of epigenetic mechanisms and processes in autoimmune disorders.
(2012) Biologics 6
PubMed: 23055689 | PubMedCentral: PMC3459549 | DOI: 10.2147/BTT.S24067
Luger K Mäder AW Richmond RK Sargent DF Richmond TJ Crystal structure of the nucleosome core particle at 2.8 A resolution Nature 1997 389 6648 251 260 9305837 Figure 1 ( A ) Cartoon derived fr... m the crystal structure (Protein Data Bank iD: 1aoi 298 ) of the histone octamer (H2A, blue; H2B, purple; H3, green; H4, orange) surrounded by 1.65 turns of DNA (∼147 base pair fragment).
Re-visiting protein-centric two-tier classification of existing DNA-protein complexes.
(2012) BMC Bioinformatics 13
PubMed: 22800292 | PubMedCentral: PMC3472317 | DOI: 10.1186/1471-2105-13-165
Table 1 Representatives for previous families 54 existing families (Thornton classification) representatives were selected and were validated using Jack-knifing Group Families Representative(s) HTH ... 000a0; Cro & repressor 1LMB Homeodomain 1FJL, 1HDD, 6PAX LacI repressor 1WET Endonuclease Fok1 1FOK Gamma Delta resolvase 1GDT Hin recombinase 1HCR RAP1 family 1IGN Prd paired domain 1PDN Tc3 transposase 1TC3 Trp repressor 1TRR Diptheria tox repressor 1DDN Transcription factor IIB 1D3U Interferon regulatory 2IRF Catabolite gene activator protein 1RUO Transcription factor 1CF7, 3HTS Ets domain 1BC8 Zinc Co-ordinating β-β-α zinc finger 1ZAA Harmone Nuclear Receptor 2NLL Loop sheet helix 1TSR GAL4 type 1ZME Zipper type Leucine Zipper 1YSA Helix loop helix 1AN2 Other-α Helix Pappilomavirus 1 E2 2BOP Histone 1AOI EBNA1 nuclear protein 1B3T Skn-1 transcription factor 1SKN Cre Recombinase 1CRX High Mobility Group 1QRV MADS box 1MNM β-Sheet TATA box binding 1YTB β-Hairpin/Ribbon MetJ repressor 1CMA Tus replication terminator 1ECR Integration host factor 1IHF Transcription Factor T-domain 1XBR Hyperthermophile DNA 1AZP Arc repressor 1PAR Other ReI homology 1SVC Stat protein 1BF5 Enzyme Methyltransferase 6MHT Endonuclease PvuII 3PVI Endonuclease ecorV 1RVA Endonuclease ecorI 1QPS Endonuclease BamHI 3BAM Enonuclease V 1VAS Dnase I 2DNJ DNA mismatch endonuclease 1CW0 DNA polymerase β 1BPY DNA Polymerase I 2BDP DNA Polymerase T7 1T7P,1CLQ HIV Reverse Transcriptase 2HMI Uracil DNA glycosylase 1SSP 3-Methyladenine DNA glycosylase 1BNK Homing endonuclease 1A73, 1BP7 TopoisomeraseI 1A31 For all the 59 selected representatives, PSI-BLAST profiles were again built against dummy database using the earlier profile creation parameters (as described in Methods).
Histone H2A variants in nucleosomes and chromatin: more or less stable?
(2012) Nucleic Acids Res 40
PubMed: 23002134 | PubMedCentral: PMC3510494 | DOI: 10.1093/nar/gks865
( B ) Nucleosome crystal structure based on [( 8 ), PDB ID: 1AOI].
Structural basis for high-affinity binding of LEDGF PWWP to mononucleosomes.
(2013) Nucleic Acids Res 41
PubMed: 23396443 | PubMedCentral: PMC3616739 | DOI: 10.1093/nar/gkt074
Molecular modelling of the LEDGF PWWP binding to the MN The solution NMR structure of LEDGF PWWP was docked onto the crystal structure of nucleosome core particle (PDB # 1AOI) ( 40 ).
Publication Year: 2013
The structure of the FANCM-MHF complex reveals physical features for functional assembly.
(2012) Nat Commun 3
PubMed: 22510687 | PubMedCentral: PMC3646547 | DOI: 10.1038/ncomms1779
Calculated electrostatic on the surface of (MHF1-MHF2) 2 tetramer ( a ) and (H3-H4) 2 from nucleosome (PDB ID: 1AOI) ( b ).
Nucleosomal DNA was docked onto (MHF1-MHF2) 2 tetramer through alignment of MHF1-MHF2 dimer with H2A-H2B (PDB ID: 1AOI).
( a ) Comparisons of MHF with histones from nucleosome (PDB ID: 1AOI).
Drug-induced histone eviction from open chromatin contributes to the chemotherapeutic effects of doxorubicin.
(2013) Nat Commun 4
PubMed: 23715267 | PubMedCentral: PMC3674280 | DOI: 10.1038/ncomms2921
The nucleosome structure has been crystallized (PDB:1AOI) but without Doxo.
Contribution of nucleosome binding preferences and co-occurring DNA sequences to transcription factor binding.
(2013) BMC Genomics 14
PubMed: 23805837 | PubMedCentral: PMC3700821 | DOI: 10.1186/1471-2164-14-428
( C ) Overlapping crystal structures for the nucleosome (PDB ID: 1AOI), GR (1R4O) and c-Jun|Fos (1FOS) showing GR can bind the nucleosome-occluded DNA while c-Jun|Fos has steric hindrances.
X-ray crystal structures of GR (PDB ID: 1R4O) and AP-1 (PDB ID: 1FOS) proteins bound to their canonical DNA motifs were overlaid with an X-ray structure of the histone octamer (PDB ID: 1AOI) bound to DNA (a nucleosome) using the program Chimera [ 31 ] to create a physical model of these proteins bound to the same DNA.
H2A.Z acidic patch couples chromatin dynamics to regulation of gene expression programs during ESC differentiation.
(2013) PLoS Genet 9
PubMed: 23990805 | PubMedCentral: PMC3749939 | DOI: 10.1371/journal.pgen.1003725
The images were generated in Pymol using the following PDB files: 1AOI for canonical H2A-containing nucleosome structure and 1F66 for H2A.Z nucleosome structure.
Published in 2014
A section of a structure of the nucleosome core particle of chromatin (to scale, with H3 in yellow) in complex with a 146 base pair DNA fragment is depicted on the left (PDB code 1AOI; Luger, K. et al... .
Publication Year: 2014
Structural insight into DNA binding and oligomerization of the multifunctional Cox protein of bacteriophage P2.
(2014) Nucleic Acids Res 42
PubMed: 24259428 | PubMedCentral: PMC3936717 | DOI: 10.1093/nar/gkt1119
Intriguingly, the diameter and pitch of the formed P2 Cox spiral is virtually the same to how DNA wraps around nucleosome core particles, which also have a diameter and pitch of 65 ± 5 and 30 ... #x000b1; 5 Å, respectively, as measured on different nucleosomes (PDB codes 3AV1, 1AOI, 1EQZ, 1F66, 1M1A and 2CV5).
Genome-wide analysis of regulation of gene expression and H3K9me2 distribution by JIL-1 kinase mediated histone H3S10 phosphorylation in Drosophila.
PubMed: 24598257 | PubMedCentral: PMC4027157 | DOI: 10.1093/nar/gku173
Modeling of JIL-1 The structure of JIL-1 was modeled with the I-TASSER protein prediction server ( 36 , 37 ) and compared to the crystal structure of a nucleosome (PDB ID: 1AOI).
Revealing transient structures of nucleosomes as DNA unwinds.
PubMed: 24990379 | PubMedCentral: PMC4117781 | DOI: 10.1093/nar/gku562
The DNA component of the crystal structure for the nucleosome core particle (1AOI) was used to model the NCPs in the completely wrapped state.
Nucleosomes (blue and red) and RNA polymerase II (magenta) models were generated based on PDB accessions 1AOI and 1I6H, respectively.
Structure obtained from PDB 1AOI.
Synthetic epigenetics-towards intelligent control of epigenetic states and cell identity.
(2015) Clin Epigenetics 7
PubMed: 25741388 | PubMedCentral: PMC4347971 | DOI: 10.1186/s13148-015-0044-x
The structural models of the proteins were taken from PDB repository (zinc finger [PDB:1P47], TALE [PDB:2YPF], CRISPR/Cas9 [PDB:4OO8], M.HhaI [PDB:5MHT], Dnmt3a/3L [PDB:2QRV], TET2 [PDB:4NM6], nucleos... me [PDB:1AOI], a 21 amino acid linker was generated in PyMol, and 60 bp DNA sequence was generated with the make-na server ( http://structure.usc.edu/make-na/server.html )).
Publication Year: 2015
394 Figure 17 Structural dissection of the X. laevis nucleosome core particle (PDB ID: 1AOI).
Published in 2015
The structure is from 1AOI and accession number for the sequence is P02302.
The contribution of phosphate-phosphate repulsions to the free energy of DNA bending.
PubMed: 15741179 | PubMedCentral: PMC552960 | DOI: 10.1093/nar/gki272
Toward this end, the first 71 bp (∼1 full turn of the superhelix) of the 146 bp histone-bound DNA strand from the crystal structure of a nucleosome core particle (PDB entry 1AOI ) ( 50 ) were ... xtracted and used as an initial structure for the bent DNA model.
2000 25 453 455 10973060 Figures and Tables Scheme 1 The 71 bp sequence used to model a full turn of DNA based on the crystallographic structure of a nucleosome core particle (PDB code 1AOI ) ( 50 ).
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