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- PDB-9l85: Structure of fish TREX1 -

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Basic information

Entry
Database: PDB / ID: 9l85
TitleStructure of fish TREX1
Componentsexodeoxyribonuclease III
KeywordsIMMUNE SYSTEM / nuclease / DNase / innate immunity / autoimmunity / cancer
Function / homology
Function and homology information


exodeoxyribonuclease III / double-stranded DNA 3'-5' DNA exonuclease activity / DNA catabolic process / nucleic acid binding / metal ion binding / cytoplasm
Similarity search - Function
Three-prime repair exonuclease 1/2 / Exonuclease / Exonuclease, RNase T/DNA polymerase III / EXOIII / Ribonuclease H superfamily / Ribonuclease H-like superfamily
Similarity search - Domain/homology
exodeoxyribonuclease III
Similarity search - Component
Biological speciesLabeo rohita (rohu)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.91 Å
AuthorsZhu, J. / Wang, L. / Lin, C. / Zhou, W.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32270920 China
CitationJournal: Immunity / Year: 2026
Title: Distinct recognition pattern for double-stranded DNA allows TREX1 to maintain immune homeostasis
Authors: Zhu, J. / Wang, L. / Lin, C. / Zhou, W.
History
DepositionDec 27, 2024Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Apr 29, 2026Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: exodeoxyribonuclease III
B: exodeoxyribonuclease III
C: exodeoxyribonuclease III
D: exodeoxyribonuclease III


Theoretical massNumber of molelcules
Total (without water)89,5504
Polymers89,5504
Non-polymers00
Water181
1
A: exodeoxyribonuclease III


Theoretical massNumber of molelcules
Total (without water)22,3871
Polymers22,3871
Non-polymers00
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: exodeoxyribonuclease III


Theoretical massNumber of molelcules
Total (without water)22,3871
Polymers22,3871
Non-polymers00
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
3
C: exodeoxyribonuclease III


Theoretical massNumber of molelcules
Total (without water)22,3871
Polymers22,3871
Non-polymers00
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
4
D: exodeoxyribonuclease III


Theoretical massNumber of molelcules
Total (without water)22,3871
Polymers22,3871
Non-polymers00
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)74.680, 86.860, 132.850
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein
exodeoxyribonuclease III


Mass: 22387.467 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Labeo rohita (rohu) / Gene: ROHU_009745 / Production host: Escherichia coli (E. coli) / References: UniProt: A0A498LXZ6, exodeoxyribonuclease III
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationN

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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: 2.41 Å3/Da / Density % sol: 48.87 %
Crystal growTemperature: 289 K / Method: vapor diffusion, hanging drop / Details: 0.3 M KSCN, 15% PEG 3350

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Data collection

DiffractionMean temperature: 80 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: SSRF / Beamline: BL10U2 / Wavelength: 0.9792 Å
DetectorType: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Dec 24, 2022
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9792 Å / Relative weight: 1
ReflectionResolution: 2.91→32.55 Å / Num. obs: 19553 / % possible obs: 99.9 % / Redundancy: 12.8 % / Biso Wilson estimate: 65.93 Å2 / CC1/2: 0.997 / Rpim(I) all: 0.086 / Net I/σ(I): 8.7
Reflection shellResolution: 2.91→3.06 Å / Redundancy: 13.3 % / Mean I/σ(I) obs: 1.4 / Num. unique obs: 2723 / CC1/2: 0.589 / Rpim(I) all: 0.622 / % possible all: 100

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Processing

Software
NameVersionClassification
PHENIX1.21.1_5127refinement
xia2data scaling
xia2data reduction
PHENIXphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.91→30.35 Å / SU ML: 0.44 / Cross valid method: FREE R-VALUE / σ(F): 1.35 / Phase error: 29.91 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.2693 3638 9.98 %
Rwork0.2336 --
obs0.2372 19536 99.61 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso mean: 68.62 Å2
Refinement stepCycle: LAST / Resolution: 2.91→30.35 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6091 0 0 1 6092
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0026231
X-RAY DIFFRACTIONf_angle_d0.5338452
X-RAY DIFFRACTIONf_dihedral_angle_d15.7832297
X-RAY DIFFRACTIONf_chiral_restr0.039954
X-RAY DIFFRACTIONf_plane_restr0.0051095
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
2.91-2.950.36811330.38371254X-RAY DIFFRACTION99
2.95-2.990.36211490.37191297X-RAY DIFFRACTION99
2.99-3.030.35841350.37341221X-RAY DIFFRACTION100
3.03-3.080.42131390.35111284X-RAY DIFFRACTION100
3.08-3.120.37611370.32641272X-RAY DIFFRACTION100
3.12-3.180.38691400.33371255X-RAY DIFFRACTION100
3.18-3.230.36151410.31691240X-RAY DIFFRACTION99
3.23-3.290.33461370.31931266X-RAY DIFFRACTION99
3.29-3.350.331370.29831286X-RAY DIFFRACTION100
3.35-3.420.34481340.2881239X-RAY DIFFRACTION100
3.42-3.490.31661420.2781263X-RAY DIFFRACTION100
3.49-3.580.33481450.25741304X-RAY DIFFRACTION100
3.58-3.670.26141370.23991236X-RAY DIFFRACTION100
3.67-3.760.29831410.23341275X-RAY DIFFRACTION99
3.76-3.870.22681440.21631237X-RAY DIFFRACTION100
3.87-40.27431380.21271272X-RAY DIFFRACTION100
4-4.140.26271420.20651274X-RAY DIFFRACTION100
4.14-4.310.26791380.19611256X-RAY DIFFRACTION100
4.31-4.50.20741440.17561268X-RAY DIFFRACTION100
4.5-4.740.23931450.18791271X-RAY DIFFRACTION100
4.74-5.040.1791410.17541243X-RAY DIFFRACTION100
5.04-5.420.23311410.2181282X-RAY DIFFRACTION100
5.42-5.960.28611390.22921237X-RAY DIFFRACTION100
5.96-6.820.25681380.25061286X-RAY DIFFRACTION100
6.82-8.560.23571410.18991257X-RAY DIFFRACTION100
8.56-30.350.19711400.18221245X-RAY DIFFRACTION98
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)
10.45740.5783-0.49870.8299-0.74710.617-0.0811-0.2409-0.0148-0.05660.05470.1074-0.10430.0536-00.59480.0140.03970.4035-0.06150.478532.54736.44258.1313
20.11940.2646-0.28171.1362-0.43430.66350.07680.4218-0.7779-0.11710.0621-0.251-0.1818-0.5238-0.00030.89750.09230.05730.7561-0.14290.879433.873-9.909610.7658
31.81270.19590.55550.6819-0.71041.03330.01830.29-0.3874-0.1508-0.09320.39060.1659-0.35040.00050.45380.01550.04430.360.01040.434137.83469.40466.1137
41.67380.1503-0.45270.69460.22070.5820.1711.292-0.607-0.6326-0.4950.21750.0894-0.2753-0.01790.7441-0.06910.23970.6020.02060.661443.309113.56781.9442
52.0428-0.4488-1.66961.1426-0.67652.31130.08890.4863-0.2833-0.14510.17610.04730.2577-0.46690.00070.446-0.0302-0.07990.42510.00190.412522.386712.092718.3343
65.0330.6714-0.33344.5898-1.23924.07260.1619-0.2242-0.9241-0.6758-0.1493-0.6981-0.06820.54361.31750.2227-0.09920.00620.09150.02930.462331.867724.332313.4401
72.77050.5968-0.62071.7576-1.54671.86860.23-0.16190.1554-0.1872-0.1774-0.4286-0.1264-0.22920.02110.24890.0259-0.09470.59030.0320.36672.5865-14.688911.3648
81.51481.38441.19572.31570.14671.71880.40890.29620.4968-0.1194-0.032-0.3578-0.0810.17730.00660.55860.11820.04870.75380.16040.52484.3283-2.29269.0421
90.72740.0321-0.77770.2648-0.10730.83160.2430.28630.3307-0.2233-0.0680.085-0.40590.33290.00010.63950.08820.01540.78580.08550.76113.4401-6.62980.9289
100.6012-0.1583-0.37140.02250.10240.22560.1980.11420.060.1560.3497-0.3308-0.2754-0.3255-0.0010.6123-0.0018-0.00310.6152-0.17340.61544.1662-21.37611.4183
110.0088-0.04210.04470.61710.06210.33650.2803-0.24980.58030.1432-0.0686-0.02190.7041-0.1470.01110.41950.07490.09920.6210.06460.4729-6.25-13.46969.5512
120.0987-0.12420.00350.2082-0.07230.0822-0.26191.43350.6207-0.98060.39710.31930.6827-0.452-0.00220.8014-0.2736-0.07690.97890.01570.7778-5.4437-20.94462.3922
130.09430.16990.23361.52731.4541.4323-0.20520.2792-0.18090.57320.2824-0.10640.5455-0.25150.05930.33730.01450.0170.4577-0.00680.363513.581-21.186723.3102
141.1293-0.5195-0.20280.2941-0.23941.97350.10790.30490.73530.05020.356-0.8103-0.96540.63180.00560.757-0.07360.12281.04380.08120.88416.6709-14.835314.2382
151.4062-0.4202-0.45440.2399-0.04380.45240.2977-0.4133-0.91260.1301-0.13020.69920.35410.2134-0.03910.30840.0196-0.02790.3971-0.03140.70935.7217-30.519414.7738
161.4134-0.9937-0.4010.65150.26240.09650.13960.1466-0.426-0.0394-0.01510.0906-0.09740.0924-0.00020.42860.00170.0540.41920.0350.469425.35813.246445.0673
171.00680.2122-1.07580.6363-0.25941.11450.2475-0.28130.0371-0.2491-0.38620.1750.0651-0.0353-0.00680.52320.05560.01040.43760.00440.55738.718.769443.1868
180.7121-1.0797-0.91411.54861.35811.1424-0.1908-0.2667-0.40260.0980.20420.30480.24390.43190.01860.4725-0.02130.00010.4801-0.02780.408127.953917.293547.7755
190.50870.20640.18150.08060.07230.0607-0.08170.1053-0.12840.46260.33780.0532-0.7409-0.5649-0.00010.56860.0127-0.02780.47230.11020.486321.627423.481642.203
201.986-0.86550.21653.3096-4.02315.7375-0.0966-0.04170.28921.03650.3749-0.6719-1.31-0.05143.90190.6904-0.18560.03350.5804-0.24690.469826.67925.990950.0527
210.01650.07770.07870.22250.23730.224-0.3237-0.01950.053-0.26380.2287-0.1002-0.11540.16670.00010.4575-0.00870.04570.4260.02550.527135.41837.830629.9257
220.2697-0.0065-0.19731.35080.78731.892-0.236-0.12840.1157-0.212-0.17290.247-0.7412-0.1603-0.10060.48810.08350.04510.55620.12780.587330.86482.562839.3611
232.0612.01160.856.64771.59560.6790.04380.182-0.38210.42280.2636-0.9465-0.12230.30320.45840.336-0.0060.00040.39680.04410.278341.382318.50938.2973
242.6473-0.58122.23923.3579-0.48812.1925-0.5527-0.63170.7342-0.11970.4213-0.00460.69940.3411-0.04480.3960.01390.01340.2089-0.030.342610.8904-21.425142.9849
250.620.4851-0.62510.744-0.54580.631-0.63340.2471.01290.41390.4705-0.68120.2713-0.7388-0.00970.51220.0303-0.12050.626-0.01420.469213.5423-14.59149.377
261.69811.02851.40221.77060.25351.4505-0.11950.03520.0221-0.27480.0693-0.30360.55660.4889-0.02040.37150.0469-0.04630.4610.09950.410728.6898-14.436743.8138
271.52050.89810.26450.5936-0.13520.8903-0.0217-0.0437-0.05010.06660.0791-0.03930.1394-0.0873-0.00010.37570.08340.00930.40190.03680.392411.3789-24.55747.169
280.2106-0.6192-0.27271.87730.81570.3545-1.09740.1062-2.31671.08261.38140.42380.3834-0.4275-0.06120.7238-0.1727-0.00610.75020.11530.77419.0864-31.167451.1811
290.1539-0.04150.02360.6878-0.22490.0645-0.36520.359-0.202-0.07280.02070.0112-0.24080.0914-0.00880.3981-0.0113-0.01490.3437-0.02690.44081.9567-13.600130.3014
301.0422.7109-0.70649.6156-1.89440.48591.38570.49070.23390.0215-0.23422.52320.43910.93771.46290.80210.0755-0.161.01710.01671.072911.0689-3.291836.1139
312.322-0.04032.13260.353-1.30486.5983-0.3024-0.42380.21670.0791-0.05320.0687-0.255-1.82060.55780.4910.1361-0.0170.551-0.15320.52264.3193-10.004441.4277
321.09381.4719-1.58082.356-1.35233.8508-0.1163-0.07430.40950.25680.26320.23520.4329-1.02930.27810.4429-0.1233-0.04110.3199-0.03910.3685-3.9924-24.07839.0765
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection details
1X-RAY DIFFRACTION1chain 'A' and (resid 24 through 60 )
2X-RAY DIFFRACTION2chain 'A' and (resid 61 through 95 )
3X-RAY DIFFRACTION3chain 'A' and (resid 96 through 135 )
4X-RAY DIFFRACTION4chain 'A' and (resid 136 through 147 )
5X-RAY DIFFRACTION5chain 'A' and (resid 148 through 197 )
6X-RAY DIFFRACTION6chain 'A' and (resid 198 through 211 )
7X-RAY DIFFRACTION7chain 'B' and (resid 24 through 44 )
8X-RAY DIFFRACTION8chain 'B' and (resid 45 through 86 )
9X-RAY DIFFRACTION9chain 'B' and (resid 87 through 109 )
10X-RAY DIFFRACTION10chain 'B' and (resid 110 through 123 )
11X-RAY DIFFRACTION11chain 'B' and (resid 124 through 135 )
12X-RAY DIFFRACTION12chain 'B' and (resid 136 through 147 )
13X-RAY DIFFRACTION13chain 'B' and (resid 148 through 174 )
14X-RAY DIFFRACTION14chain 'B' and (resid 175 through 197 )
15X-RAY DIFFRACTION15chain 'B' and (resid 198 through 211 )
16X-RAY DIFFRACTION16chain 'C' and (resid 23 through 60 )
17X-RAY DIFFRACTION17chain 'C' and (resid 61 through 95 )
18X-RAY DIFFRACTION18chain 'C' and (resid 96 through 123 )
19X-RAY DIFFRACTION19chain 'C' and (resid 124 through 134 )
20X-RAY DIFFRACTION20chain 'C' and (resid 135 through 147 )
21X-RAY DIFFRACTION21chain 'C' and (resid 148 through 173 )
22X-RAY DIFFRACTION22chain 'C' and (resid 174 through 197 )
23X-RAY DIFFRACTION23chain 'C' and (resid 198 through 211 )
24X-RAY DIFFRACTION24chain 'D' and (resid 23 through 44 )
25X-RAY DIFFRACTION25chain 'D' and (resid 45 through 60 )
26X-RAY DIFFRACTION26chain 'D' and (resid 61 through 95 )
27X-RAY DIFFRACTION27chain 'D' and (resid 96 through 135 )
28X-RAY DIFFRACTION28chain 'D' and (resid 136 through 147 )
29X-RAY DIFFRACTION29chain 'D' and (resid 148 through 173 )
30X-RAY DIFFRACTION30chain 'D' and (resid 174 through 182 )
31X-RAY DIFFRACTION31chain 'D' and (resid 183 through 197 )
32X-RAY DIFFRACTION32chain 'D' and (resid 198 through 211 )

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