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- PDB-2pij: Structure of the Cro protein from prophage Pfl 6 in Pseudomonas f... -

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Basic information

Entry
Database: PDB / ID: 2pij
TitleStructure of the Cro protein from prophage Pfl 6 in Pseudomonas fluorescens Pf-5
ComponentsProphage Pfl 6 Cro
KeywordsTRANSCRIPTION / transcription factor / helix-turn-helix / prophage / structural evolution
Function / homology
Function and homology information


regulation of DNA-templated transcription / DNA binding
Similarity search - Function
Cro / Regulatory protein cro / lambda repressor-like DNA-binding domains / 434 Repressor (Amino-terminal Domain) / Lambda repressor-like, DNA-binding domain superfamily / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
BICARBONATE ION / 2,3-DIHYDROXY-1,4-DITHIOBUTANE / : / Cro
Similarity search - Component
Biological speciesPseudomonas fluorescens (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MAD / Resolution: 1.7 Å
AuthorsRoessler, C.G. / Roberts, S.A. / Montfort, W.R. / Cordes, M.H.J.
CitationJournal: Proc.Natl.Acad.Sci.Usa / Year: 2008
Title: Transitive homology-guided structural studies lead to discovery of Cro proteins with 40% sequence identity but different folds.
Authors: Roessler, C.G. / Hall, B.M. / Anderson, W.J. / Ingram, W.M. / Roberts, S.A. / Montfort, W.R. / Cordes, M.H.
History
DepositionApr 13, 2007Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 4, 2008Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Source and taxonomy / Version format compliance
Revision 1.2Oct 18, 2017Group: Refinement description / Category: software / Item: _software.name

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Prophage Pfl 6 Cro
B: Prophage Pfl 6 Cro
hetero molecules


Theoretical massNumber of molelcules
Total (without water)15,4188
Polymers14,8182
Non-polymers6006
Water1,09961
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)40.940, 40.940, 123.500
Angle α, β, γ (deg.)90.000, 90.000, 120.000
Int Tables number152
Space group name H-MP3121

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Components

#1: Protein Prophage Pfl 6 Cro


Mass: 7409.207 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Pseudomonas fluorescens (bacteria) / Strain: Pf-5 / Gene: Prophage Pfl 6 Cro / Plasmid: pet21b / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): Bl21(DE3) / References: UniProt: A6STU3, UniProt: J3IU59*PLUS
#2: Chemical
ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: SO4
#3: Chemical ChemComp-BCT / BICARBONATE ION


Mass: 61.017 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: CHO3 / Comment: pH buffer*YM
#4: Chemical ChemComp-DTT / 2,3-DIHYDROXY-1,4-DITHIOBUTANE / 1,4-DITHIOTHREITOL


Mass: 154.251 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C4H10O2S2
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 61 / Source method: isolated from a natural source / Formula: H2O
Sequence detailsAUTHOR UPDATED THE FOLLOWING SEQUENCE DATABASE ENTRY THAT WAS NOT AVAILABLE AT THE TIME OF THE ...AUTHOR UPDATED THE FOLLOWING SEQUENCE DATABASE ENTRY THAT WAS NOT AVAILABLE AT THE TIME OF THE ORIGINAL DEPOSITION: REFSEQ YP_001312167.1; GB ABR57178.1; LOCUS TAG: PFL_3262

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.02 Å3/Da / Density % sol: 38.96 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 9.5
Details: primary precipitating solution: 2.2M ammonium sulfate, 0.1M tris additional chemicals in drop: 2mM dithiothreitol, 0.2mM EDTA, 0.01% sodium azide, pH 9.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

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Data collection

Diffraction
IDMean temperature (K)Crystal-ID
11001
21
31
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL9-2 / Wavelength: 0.97935,0.97921,0.91165
DetectorType: MARMOSAIC 325 mm CCD / Detector: CCD / Date: Jul 21, 2005
Details: flat collimating mirror double crystal monochromator toroid focusing mirror
RadiationMonochromator: Si 111 channel / Protocol: MAD / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelength
IDWavelength (Å)Relative weight
10.979351
20.979211
30.911651
Reflection

Rmerge(I) obs: 0.03 / D res low: 34.06 Å

Redundancy (%)IDAv σ(I) over netINumberΧ2D res high (Å)Num. obs% possible obs
2.42112.8758670.881.352911557.9
2.42212764050.831.352920658.1
2.38311925200.831.263517756.7
Diffraction reflection shell
Highest resolution (Å)Lowest resolution (Å)% possible obs (%)IDRmerge(I) obsChi squaredRedundancyRejects
2.9234.0699.110.020.782.8893
2.322.9295.910.0440.782.8107
2.022.3295.110.0870.882.73291
1.842.0293.210.1811.012.61915
1.711.8490.310.2891.022.341857
1.611.7161.410.3640.91.461184
1.531.6129.310.350.731.09522
1.461.5312.310.4111.021.03293
2.9234.0699.220.020.722.8984
2.322.9296.620.0460.742.79116
2.022.3295.620.0920.822.72369
1.842.0293.620.1990.972.581049
1.711.8491.120.3110.982.321949
1.611.7160.720.3660.831.471278
1.531.6128.820.3740.671.09559
1.461.5312.420.3810.991.02301
1.41.462.520.2150.171.0166
2.7234.0698.530.0190.692.8773
2.162.7294.730.0540.72.77176
1.892.1692.430.1330.882.69693
1.711.8990.430.2550.982.492010
1.591.7187.530.3681.062.243044
1.51.5959.930.4070.691.441733
1.421.527.230.3950.691.09755
1.361.4212.930.4670.961.03348
1.311.362.830.4040.771.0166
ReflectionResolution: 1.7→34.08 Å / Num. all: 13741 / Num. obs: 13741 / % possible obs: 98.1 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 4.84 % / Biso Wilson estimate: 39.3 Å2 / Rmerge(I) obs: 0.055 / Χ2: 1 / Net I/σ(I): 13.5 / Scaling rejects: 503
Reflection shellResolution: 1.7→1.76 Å / Redundancy: 4.28 % / Rmerge(I) obs: 0.434 / Mean I/σ(I) obs: 3 / Num. measured all: 5236 / Num. unique all: 1222 / Χ2: 0.83 / % possible all: 90.7

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Phasing

PhasingMethod: MAD
Phasing set
ID
1
2
3
Phasing MADD res high: 1.77 Å / D res low: 30 Å / FOM : 0.53 / Reflection: 12231
Phasing MAD set
Clust-IDExpt-IDSet-IDWavelength (Å)F double prime refinedF prime refined
13 wavelength10.97924.78-5.76
13 wavelength20.97934.3-8.12
13 wavelength30.91172.61-3.01
Phasing MAD set site
IDAtom type symbolB isoFract xFract yFract zOccupancy
1Se32.8170.730.0740.0070.783
2Se38.8190.5060.7530.1540.795
3Se40.3450.1610.8660.0940.79
4Se52.0480.4980.3130.0870.872
Phasing MAD shell
Resolution (Å)FOM Reflection
6.38-300.87628
4.03-6.380.871051
3.15-4.030.781301
2.67-3.150.681520
2.36-2.670.551702
2.13-2.360.431861
1.96-2.130.332041
1.83-1.960.252127

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Processing

Software
NameVersionClassificationNB
d*TREK9.2SSIdata scaling
SOLVE2.09phasing
RESOLVE2.09phasing
REFMACrefinement
PDB_EXTRACT2data extraction
Blu-Icedata collection
CrystalCleardata reduction
CrystalCleardata scaling
RefinementMethod to determine structure: MAD / Resolution: 1.7→34.08 Å / Cor.coef. Fo:Fc: 0.954 / Cor.coef. Fo:Fc free: 0.942 / SU B: 6.573 / SU ML: 0.109 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.127 / ESU R Free: 0.131 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.271 677 4.9 %RANDOM
Rwork0.218 ---
all0.221 13741 --
obs0.221 13741 98.09 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso mean: 24.302 Å2
Baniso -1Baniso -2Baniso -3
1-0.76 Å20.38 Å20 Å2
2--0.76 Å20 Å2
3----1.15 Å2
Refine analyzeLuzzati coordinate error obs: 0.291 Å
Refinement stepCycle: LAST / Resolution: 1.7→34.08 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms907 0 32 61 1000
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0210.022949
X-RAY DIFFRACTIONr_angle_refined_deg1.8552.0171280
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.0845119
X-RAY DIFFRACTIONr_dihedral_angle_2_deg36.4824.21138
X-RAY DIFFRACTIONr_dihedral_angle_3_deg15.70115174
X-RAY DIFFRACTIONr_dihedral_angle_4_deg23.688158
X-RAY DIFFRACTIONr_chiral_restr0.1270.2147
X-RAY DIFFRACTIONr_gen_planes_refined0.0080.02680
X-RAY DIFFRACTIONr_nbd_refined0.2240.2409
X-RAY DIFFRACTIONr_nbtor_refined0.3060.2630
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1570.257
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.1930.261
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.1850.218
X-RAY DIFFRACTIONr_mcbond_it1.1971.5620
X-RAY DIFFRACTIONr_mcangle_it1.5862954
X-RAY DIFFRACTIONr_scbond_it2.5173366
X-RAY DIFFRACTIONr_scangle_it3.5224.5325
LS refinement shellResolution: 1.695→1.739 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.304 50 -
Rwork0.275 819 -
obs-869 88.04 %
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL112)L122)L132)L222)L232)L332)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T112)T122)T132)T222)T232)T332)Origin x (Å)Origin y (Å)Origin z (Å)
112.9066-13.582114.16317.8803-19.232720.7643-0.37460.02610.9489-0.78920.2088-1.3041-0.1425-0.25490.16580.2231-0.0518-0.02320.4078-0.03070.1547.357626.883137.1636
213.27370.0727-8.156220.322717.67528.1966-0.1633-0.2622-0.06620.04980.24260.1505-0.16120.7258-0.0793-0.1033-0.0084-0.01680.1904-0.0069-0.04826.798221.791445.302
39.37267.2451.34496.8550.479312.9330.08560.26850.03840.19540.2467-0.4374-0.73620.6953-0.3323-0.0229-0.00510.00710.2022-0.06140.08553.946723.176248.3324
44.75320.61052.39046.1099-1.83868.1761-0.04080.7642-0.26890.05490.1725-0.1138-0.0394-0.1484-0.1317-0.1169-0.02310.00610.2711-0.0097-0.0138-3.980816.947142.2335
516.56730.56640.0552.214-4.0397.4406-0.14730.1849-0.44050.4881-0.1451-0.1384-0.0714-0.48150.29250.0923-0.0243-0.01920.123-0.05650.1906-0.723610.520645.0899
628.80058.0577-1.964913.9404-0.04830.1556-0.0632-0.5675-1.46920.844-1.0266-1.24290.279-0.11771.08980.0863-0.0612-0.01620.18980.16520.29337.39159.317245.3338
714.5873-8.82132.674411.87280.948911.63540.2676-0.4584-0.4413-0.4999-0.12940.00520.3751-0.5615-0.1382-0.0968-0.03810.01090.2048-0.03970.03428.389916.446338.3768
824.095-13.04664.92320.7329-2.51376.1603-0.74121.16671.33430.60580.13740.3117-1.17870.7690.60380.1121-0.10130.01260.20560.08750.0241-0.745228.882235.7965
918.4751-13.7457-2.192519.84531.07251.3320.12180.19340.1337-0.32090.2820.0917-0.1840.0532-0.4039-0.0156-0.03320.01020.17430.0728-0.02421.087420.835235.0573
1035.3731-28.1814-28.228533.7926.768645.3598-0.5634-1.3423-0.72840.07190.93-0.15512.59071.5565-0.36670.15160.0797-0.06420.07460.02940.090515.662910.400930.6515
1112.61565.458912.02558.79958.83117.3913-0.09590.57521.0024-0.0915-0.40610.2079-1.27190.31390.50190.16330.00580.05870.05420.09060.021616.645622.585622.4078
1233.9314-12.6316-6.456810.9103-13.71543.080.04611.19320.79890.6031-0.0056-0.6018-0.9875-0.6959-0.04050.10420.09660.02820.08560.0913016.070517.943614.267
1315.6488-16.97180.333744.9234-17.526620.4758-0.31290.13631.02230.68920.7302-0.7914-0.8909-0.2203-0.41730.00340.0150.00860.0612-0.04960.009720.817216.144913.0645
142.011-1.31112.238615.27666.044517.4652-0.12940.04360.40760.48550.2567-0.91760.93040.2932-0.12730.03490.0614-0.01650.0363-0.0588-0.011824.462910.552320.948
1519.7788-10.77123.09669.65670.28062.2689-0.27730.39090.16090.1468-0.13970.1669-0.6728-0.07830.4170.395-0.0359-0.03-0.0976-0.0159-0.067519.03794.790517.8246
1621.0896-11.3942-13.277428.02671.93789.6125-0.5469-0.2219-0.839-1.6589-0.14611.52160.6392-1.13150.6930.33030.1041-0.1468-0.0794-0.0604-0.000610.94496.425417.6225
1712.48035.12812.97049.33122.68611.91680.2469-0.1829-0.3193-0.6692-0.1397-0.1517-0.0597-0.6861-0.10720.04590.0917-0.03410.033-0.0051-0.030711.938814.108923.152
186.93962.64538.719615.8916-0.689715.4734-0.51220.97980.1417-0.39470.3818-1.4598-1.19291.1150.13030.2287-0.03550.08050.17220.00560.210725.44523.281225.761
1940.456610.4188-5.40868.943-1.35737.9639-0.2069-0.35210.1249-0.6390.1078-0.0408-0.10760.49580.09920.08820.01440.01480.1133-0.02310.007119.927915.94627.4603
2080.55268.7094-29.02576.0590.241413.8523-0.6959-0.2344-1.94430.1628-0.082-0.37091.8233-0.20130.77790.1087-0.0930.0070.2323-0.00290.06313.419612.981231.4917
Refinement TLS group

Refine-ID: X-RAY DIFFRACTION / Selection: ALL

IDRefine TLS-IDAuth asym-IDLabel asym-IDAuth seq-IDLabel seq-ID
11AA1 - 51 - 5
22AA6 - 106 - 10
33AA11 - 1611 - 16
44AA17 - 2517 - 25
55AA26 - 3126 - 31
66AA32 - 3732 - 37
77AA38 - 4238 - 42
88AA43 - 4743 - 47
99AA48 - 5448 - 54
1010AA55 - 5955 - 59
1111BB1 - 61 - 6
1212BB7 - 117 - 11
1313BB12 - 1712 - 17
1414BB18 - 2518 - 25
1515BB26 - 3126 - 31
1616BB32 - 3632 - 36
1717BB37 - 4237 - 42
1818BB43 - 4843 - 48
1919BB49 - 5449 - 54
2020BB55 - 6055 - 60

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