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- PDB-9nxt: Crystal Structure of Glutathione S-Transferase Per a 23 (sigma class) -

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Basic information

Entry
Database: PDB / ID: 9nxt
TitleCrystal Structure of Glutathione S-Transferase Per a 23 (sigma class)
Componentsglutathione transferase
KeywordsTRANSFERASE / Glutathione S-Transferase / GST / GSH / American cockroach / allergen
Function / homology
Function and homology information


glutathione peroxidase activity / glutathione transferase / glutathione transferase activity / glutathione metabolic process
Similarity search - Function
Glutathione S-transferase, C-terminal domain / : / Glutathione S-transferase, N-terminal domain / Glutathione S-transferase, C-terminal / Glutathione transferase family / Glutathione S-transferase, C-terminal-like / Soluble glutathione S-transferase C-terminal domain profile. / Soluble glutathione S-transferase N-terminal domain profile. / Glutathione S-transferase, N-terminal / Glutathione S-transferase, C-terminal domain superfamily / Thioredoxin-like superfamily
Similarity search - Domain/homology
OXIDIZED GLUTATHIONE DISULFIDE / glutathione transferase
Similarity search - Component
Biological speciesPeriplaneta americana (American cockroach)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.5 Å
AuthorsZong, G. / Pedersen, L.C. / Mueller, G.A.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS)1ZIAES102906 United States
National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS)1ZICES102645 United States
CitationJournal: Clin Exp Allergy / Year: 2026
Title: Reclassification of GST Allergens Based on Their Cross-Reactivity in Two Divergent Cockroach Species.
Authors: Zong, G. / Lozano, A. / Leighton, G.O. / Randall, T. / Pedersen, L.C. / Glesner, J. / Smith, B.R.E. / Acevedo, N. / Schal, C. / Caraballo, L. / Pomes, A. / Zakzuk, J. / Mueller, G.A.
History
DepositionMar 26, 2025Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 22, 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: glutathione transferase
B: glutathione transferase
C: glutathione transferase
D: glutathione transferase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)98,32122
Polymers94,8934
Non-polymers3,42818
Water12,647702
1
A: glutathione transferase
B: glutathione transferase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)49,20412
Polymers47,4462
Non-polymers1,75710
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6780 Å2
ΔGint-40 kcal/mol
Surface area16750 Å2
MethodPISA
2
C: glutathione transferase
D: glutathione transferase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)49,11710
Polymers47,4462
Non-polymers1,6718
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6210 Å2
ΔGint-31 kcal/mol
Surface area16450 Å2
MethodPISA
Unit cell
Length a, b, c (Å)98.729, 49.619, 103.440
Angle α, β, γ (deg.)90.00, 118.10, 90.00
Int Tables number4
Space group name H-MP1211
Symmetry operation#1: x,y,z
#2: -x,y+1/2,-z

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Components

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Protein , 1 types, 4 molecules ABCD

#1: Protein
glutathione transferase


Mass: 23723.217 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Periplaneta americana (American cockroach)
Production host: Escherichia coli (E. coli) / References: UniProt: A0A2P0XJ18, glutathione transferase

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Non-polymers , 6 types, 720 molecules

#2: Chemical
ChemComp-GDS / OXIDIZED GLUTATHIONE DISULFIDE


Mass: 612.631 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C20H32N6O12S2
#3: Chemical
ChemComp-EDO / 1,2-ETHANEDIOL / ETHYLENE GLYCOL


Mass: 62.068 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: C2H6O2 / Feature type: SUBJECT OF INVESTIGATION
#4: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
#5: Chemical
ChemComp-MPD / (4S)-2-METHYL-2,4-PENTANEDIOL


Mass: 118.174 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C6H14O2 / Feature type: SUBJECT OF INVESTIGATION / Comment: precipitant*YM
#6: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Na / Feature type: SUBJECT OF INVESTIGATION
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 702 / Source method: isolated from a natural source / Formula: H2O

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Details

Has ligand of interestY
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: 2.3 Å3/Da / Density % sol: 46.5 %
Crystal growTemperature: 298 K / Method: vapor diffusion, sitting drop / pH: 7.5
Details: 18mM MgCl2, 18mM CaCl2, 0.1M HEPES/MOPS, pH7.5, 9.375% MPD, 9.375% PEG1000, 9.375%PEG3350

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: NSLS-II / Beamline: 17-ID-2 / Wavelength: 1 Å
DetectorType: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Jan 24, 2024
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 1.5→49.39 Å / Num. obs: 277798 / % possible obs: 99.8 % / Redundancy: 1.96 % / Biso Wilson estimate: 19.2 Å2 / CC1/2: 0.996 / Net I/σ(I): 8.8
Reflection shellResolution: 1.5→1.55 Å / Num. unique obs: 26835 / CC1/2: 0.705

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Processing

Software
NameVersionClassification
PHENIX(1.21.2_5419: ???)refinement
autoPROCdata reduction
autoPROCdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 1.5→35.88 Å / SU ML: 0.14 / Cross valid method: FREE R-VALUE / σ(F): 1.34 / Phase error: 20.04 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.1938 1542 1.09 %
Rwork0.1702 --
obs0.1705 141492 99.77 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refinement stepCycle: LAST / Resolution: 1.5→35.88 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6481 0 169 702 7352
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0066956
X-RAY DIFFRACTIONf_angle_d0.8759426
X-RAY DIFFRACTIONf_dihedral_angle_d13.3592568
X-RAY DIFFRACTIONf_chiral_restr0.055960
X-RAY DIFFRACTIONf_plane_restr0.0091206
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
1.5-1.550.25841460.264112644X-RAY DIFFRACTION100
1.55-1.60.23611360.228312668X-RAY DIFFRACTION100
1.6-1.670.21991400.206312667X-RAY DIFFRACTION100
1.67-1.740.20831510.194312609X-RAY DIFFRACTION100
1.74-1.840.22251370.189212716X-RAY DIFFRACTION100
1.84-1.950.21671350.185212671X-RAY DIFFRACTION100
1.95-2.10.20341290.169812696X-RAY DIFFRACTION100
2.1-2.310.17691450.163912710X-RAY DIFFRACTION100
2.31-2.650.17251420.164912740X-RAY DIFFRACTION100
2.65-3.340.20211350.16912813X-RAY DIFFRACTION100
3.34-35.880.17961460.152413016X-RAY DIFFRACTION99
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)
14.3651.2064-1.70623.8459-0.98784.1096-0.0970.0996-0.3138-0.0880.0879-0.06450.39770.0907-0.0210.13720.0118-0.0210.0963-0.03890.10614.533-10.89875.5971
22.22092.9555-0.33186.1646-1.16053.8206-0.06220.2004-0.2231-0.11260.21730.0440.642-0.3961-0.19080.2652-0.03340.01210.11750.00550.18975.7941-15.558918.0757
31.6415-0.43540.11620.7964-0.05731.4408-0.0321-0.00710.0018-0.01040.05780.078-0.01720.0393-0.02990.1135-0.0005-0.01290.0795-0.00740.124711.86385.001311.0214
43.5852-1.1225-2.53281.1137-0.00552.87330.01750.43680.0278-0.0974-0.03470.1822-0.2709-0.24110.0150.1914-0.0168-0.05170.20790.00680.18487.90458.8046-1.3933
57.85075.0256-4.21835.2731-2.11314.0889-0.25290.47010.0384-0.18990.12920.17740.1904-0.34160.14410.1413-0.0215-0.04090.1873-0.03480.144211.0125-6.0779-3.9214
66.1805-1.3341.8695.1585-0.88013.3604-0.1169-0.03020.40910.21330.0765-0.1812-0.420.22520.02390.2407-0.0333-0.02280.1389-0.03890.127220.64515.331932.4432
75.71-2.55150.16921.78850.01710.0193-0.0674-0.34690.36470.15180.1725-0.0264-0.6601-0.0579-0.06930.33540.0204-0.01610.077-0.00380.203210.049321.758523.613
82.35182.41680.94682.50520.7284.9909-0.24210.08770.5261-0.09970.118-0.0778-0.83730.54230.08520.2818-0.0608-0.0310.1696-0.00330.280822.283717.728821.5308
94.5856-1.50010.00084.97820.58053.6016-0.1051-0.0922-0.07160.02190.1438-0.2098-0.02170.5088-0.02980.1039-0.0046-0.00850.1806-0.01160.098127.25244.069724.0613
106.8894-2.3985-4.99393.00131.63965.89820.02590.0944-0.03340.1114-0.03770.1490.0506-0.0330.04030.1626-0.003-0.00760.0854-0.00080.143813.6379-2.390925.1202
118.15461.06420.38675.2416-2.66524.660.0503-0.24480.13460.36310.04751.2802-0.1971-0.9551-0.09980.27070.0060.07520.4083-0.07210.3501-5.6860.784931.9966
123.0212-1.37873.79971.2837-2.31165.40780.18510.0989-0.61010.0111-0.0919-0.10260.64260.0406-0.12720.2897-0.00390.03260.0949-0.01150.216212.293-11.291332.574
131.9113-0.01150.43562.4244-0.76652.43090.0084-0.2379-0.13240.3605-0.03030.07680.1345-0.03070.02260.22320.00340.0020.1225-0.00280.133716.0596-1.956436.96
143.1127-1.37012.62194.36980.38223.0945-0.2363-0.86770.22180.57410.1318-0.1136-0.1349-0.2370.0960.2951-0.0031-0.02120.2636-0.03960.148520.560310.2542.909
151.6667-0.6286-1.42070.22870.56161.2779-0.5448-0.875-0.77490.1485-0.1448-0.53780.94971.4925-0.17820.22160.41050.06090.99690.31270.360447.5006-4.5795-10.02
164.35261.4956-0.31722.5890.52531.7446-0.2541-0.13080.1139-0.12340.1777-0.04920.05930.31050.07650.1379-0.01530.00610.2589-0.00550.097834.80335.3243-16.3739
172.21941.0538-1.51770.6828-0.76351.04190.1469-0.01410.28960.1637-0.109-0.3311-0.09220.4287-0.0310.2609-0.20170.05690.605-0.09940.426154.048721.5239-20.7305
187.55496.4899-7.18515.8657-5.47388.58140.33580.01990.81880.10870.15230.2782-0.65860.1498-0.47780.2311-0.09560.02330.2319-0.03560.266434.017120.4443-14.7931
191.31490.2637-0.01120.27780.0190.05790.0847-0.57940.25060.12350.0654-0.1045-0.33190.859-0.09440.2-0.1630.00390.5523-0.09210.211737.826413.2908-6.984
200.19030.0663-0.26390.2914-0.54131.16740.0051-0.2668-0.01-0.0056-0.2951-0.4222-0.15410.8941-0.01060.2385-0.0555-0.13581.41950.16120.097344.62964.53442.0556
213.02690.14450.2215.91280.59673.5907-0.14140.29670.0408-0.32980.0180.37080.046-0.39460.10210.217-0.0566-0.04240.32020.00740.146427.04497.4461-37.0376
224.98281.7047-3.53935.8327-1.61458.10980.11730.36750.538-0.44690.18710.3532-1.1554-0.0861-0.23510.3359-0.046-0.04190.20890.05380.245731.048420.7094-30.5911
237.5786-1.0063-0.07676.58881.43236.264-0.06310.23240.1298-0.17640.04120.7383-0.3854-0.83270.02420.1655-0.0034-0.02440.27250.05370.238723.605411.1483-26.9279
244.62470.455-0.05094.6980.09493.9828-0.33570.1201-0.2663-0.07820.09270.17120.5816-0.32920.22470.2228-0.07670.04910.2323-0.02340.153427.1986-2.9171-25.7056
258.52035.2343-4.32038.1526-3.70236.3439-0.3086-0.2356-0.3512-0.09320.0641-0.2250.36770.51080.2670.19470.05150.04120.258-0.00630.128842.1792-0.7573-26.5391
263.8735-0.9261-1.07554.47010.20012.6187-0.09480.07540.4865-0.11840.1034-1.1902-0.36540.93310.00550.3115-0.12590.04220.582-0.03710.427256.794210.6168-35.4901
276.7173.80050.06988.41921.0413.5387-0.3882-0.091-0.704-0.0630.2131-0.41260.78330.83210.17640.32430.14630.11280.40390.03140.285648.9826-8.057-31.5801
283.1521-0.099-0.65462.3261-0.12393.1573-0.25550.2845-0.3697-0.21730.0792-0.10150.57360.26540.16030.3436-0.01960.07840.3043-0.050.223240.3486-5.2428-37.9977
294.08621.20411.89062.0407-0.26265.6897-0.18730.57950.1483-0.55760.0121-0.18970.08180.22570.15870.3668-0.0822-0.01050.4347-0.01130.223931.01512.0239-45.6123
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection details
1X-RAY DIFFRACTION1chain 'A' and (resid 2 through 36 )
2X-RAY DIFFRACTION2chain 'A' and (resid 37 through 53 )
3X-RAY DIFFRACTION3chain 'A' and (resid 54 through 167 )
4X-RAY DIFFRACTION4chain 'A' and (resid 168 through 189 )
5X-RAY DIFFRACTION5chain 'A' and (resid 190 through 205 )
6X-RAY DIFFRACTION6chain 'B' and (resid 3 through 36 )
7X-RAY DIFFRACTION7chain 'B' and (resid 37 through 53 )
8X-RAY DIFFRACTION8chain 'B' and (resid 54 through 64 )
9X-RAY DIFFRACTION9chain 'B' and (resid 65 through 82 )
10X-RAY DIFFRACTION10chain 'B' and (resid 83 through 107 )
11X-RAY DIFFRACTION11chain 'B' and (resid 108 through 125 )
12X-RAY DIFFRACTION12chain 'B' and (resid 126 through 140 )
13X-RAY DIFFRACTION13chain 'B' and (resid 141 through 188 )
14X-RAY DIFFRACTION14chain 'B' and (resid 189 through 205 )
15X-RAY DIFFRACTION15chain 'C' and (resid 3 through 64 )
16X-RAY DIFFRACTION16chain 'C' and (resid 65 through 107 )
17X-RAY DIFFRACTION17chain 'C' and (resid 108 through 125 )
18X-RAY DIFFRACTION18chain 'C' and (resid 126 through 140 )
19X-RAY DIFFRACTION19chain 'C' and (resid 141 through 189 )
20X-RAY DIFFRACTION20chain 'C' and (resid 190 through 205 )
21X-RAY DIFFRACTION21chain 'D' and (resid 3 through 36 )
22X-RAY DIFFRACTION22chain 'D' and (resid 37 through 53 )
23X-RAY DIFFRACTION23chain 'D' and (resid 54 through 64 )
24X-RAY DIFFRACTION24chain 'D' and (resid 65 through 82 )
25X-RAY DIFFRACTION25chain 'D' and (resid 83 through 107 )
26X-RAY DIFFRACTION26chain 'D' and (resid 108 through 125 )
27X-RAY DIFFRACTION27chain 'D' and (resid 126 through 140 )
28X-RAY DIFFRACTION28chain 'D' and (resid 141 through 189 )
29X-RAY DIFFRACTION29chain 'D' and (resid 190 through 205 )

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