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- PDB-3ezj: Crystal structure of the N-terminal domain of the secretin GspD f... -

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Basic information

Entry
Database: PDB / ID: 3ezj
TitleCrystal structure of the N-terminal domain of the secretin GspD from ETEC determined with the assistance of a nanobody
Components
  • General secretion pathway protein GspD
  • NANOBODY NBGSPD_7
KeywordsPROTEIN TRANSPORT / GENERAL SECRETORY PATHWAY / SECRETIN / SINGLE CHAIN ANTIBODY / IMMUNE SYSTEM / COMPLEX
Function / homology
Function and homology information


protein secretion by the type II secretion system / type II protein secretion system complex / cell outer membrane / membrane => GO:0016020
Similarity search - Function
Ribosomal Protein S8; Chain: A, domain 1 - #120 / Phage tail protein beta-alpha-beta fold - #30 / Type II secretion system protein GspD / Phage tail protein beta-alpha-beta fold / GspD/PilQ family / NolW-like / Bacterial type II/III secretion system short domain / NolW-like superfamily / Type II/III secretion system / Bacterial type II and III secretion system protein ...Ribosomal Protein S8; Chain: A, domain 1 - #120 / Phage tail protein beta-alpha-beta fold - #30 / Type II secretion system protein GspD / Phage tail protein beta-alpha-beta fold / GspD/PilQ family / NolW-like / Bacterial type II/III secretion system short domain / NolW-like superfamily / Type II/III secretion system / Bacterial type II and III secretion system protein / 3-Layer(bab) Sandwich / Ribosomal Protein S8; Chain: A, domain 1 / Immunoglobulins / Immunoglobulin-like / Sandwich / 2-Layer Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
PHOSPHATE ION / : / General secretion pathway protein GspD
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
LAMA GLAMA (llama)
MethodX-RAY DIFFRACTION / SYNCHROTRON / SAD / Resolution: 2.8 Å
AuthorsKorotkov, K.V. / Pardon, E. / Steyaert, J. / Hol, W.G.
CitationJournal: Structure / Year: 2009
Title: Crystal structure of the N-terminal domain of the secretin GspD from ETEC determined with the assistance of a nanobody.
Authors: Korotkov, K.V. / Pardon, E. / Steyaert, J. / Hol, W.G.
History
DepositionOct 22, 2008Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 17, 2009Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Advisory / Version format compliance
Revision 1.2Jan 24, 2018Group: Structure summary / Category: audit_author / Item: _audit_author.name
Revision 1.3Oct 20, 2021Group: Database references / Derived calculations / Category: database_2 / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.4Dec 27, 2023Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: General secretion pathway protein GspD
C: General secretion pathway protein GspD
E: General secretion pathway protein GspD
G: General secretion pathway protein GspD
B: NANOBODY NBGSPD_7
D: NANOBODY NBGSPD_7
F: NANOBODY NBGSPD_7
H: NANOBODY NBGSPD_7
hetero molecules


Theoretical massNumber of molelcules
Total (without water)160,80520
Polymers159,9038
Non-polymers90212
Water4,756264
1
A: General secretion pathway protein GspD
B: NANOBODY NBGSPD_7
hetero molecules

E: General secretion pathway protein GspD
F: NANOBODY NBGSPD_7
hetero molecules


Theoretical massNumber of molelcules
Total (without water)80,40210
Polymers79,9524
Non-polymers4516
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation4_545y,x-1,-z1
Buried area7850 Å2
ΔGint-71 kcal/mol
Surface area29980 Å2
MethodPISA
2
A: General secretion pathway protein GspD
E: General secretion pathway protein GspD
B: NANOBODY NBGSPD_7
F: NANOBODY NBGSPD_7
hetero molecules


Theoretical massNumber of molelcules
Total (without water)80,40210
Polymers79,9524
Non-polymers4516
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area8210 Å2
ΔGint-54 kcal/mol
Surface area29620 Å2
MethodPISA
3
C: General secretion pathway protein GspD
D: NANOBODY NBGSPD_7
hetero molecules

G: General secretion pathway protein GspD
H: NANOBODY NBGSPD_7
hetero molecules


Theoretical massNumber of molelcules
Total (without water)80,40210
Polymers79,9524
Non-polymers4516
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation6_665-x+1,-x+y+1,-z+1/31
Buried area7810 Å2
ΔGint-72 kcal/mol
Surface area30170 Å2
MethodPISA
4
C: General secretion pathway protein GspD
G: General secretion pathway protein GspD
D: NANOBODY NBGSPD_7
H: NANOBODY NBGSPD_7
hetero molecules


Theoretical massNumber of molelcules
Total (without water)80,40210
Polymers79,9524
Non-polymers4516
Water724
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area8230 Å2
ΔGint-56 kcal/mol
Surface area29740 Å2
MethodPISA
Unit cell
Length a, b, c (Å)98.520, 98.520, 402.100
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Space group name H-MP3121
Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
11A
21C
31E
41G
12B
22D
32F
42H

NCS domain segments:
Dom-IDComponent-IDEns-IDRefine codeAuth asym-IDAuth seq-ID
1114A8 - 35
2114C8 - 35
3114E8 - 35
4114G8 - 35
1214A42 - 71
2214C42 - 71
3214E42 - 71
4214G42 - 71
1314A79 - 82
2314C79 - 82
3314E79 - 82
4314G79 - 82
1414A104 - 130
2414C104 - 130
3414E104 - 130
4414G104 - 130
1514A137 - 172
2514C137 - 172
3514E137 - 172
4514G137 - 172
1124B1 - 120
2124D1 - 120
3124F1 - 120
4124H1 - 120

NCS ensembles :
ID
1
2
Detailsbiological unit is a dodecamer, it is unknown at the moment how individual subunits are assembled in vivo

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Components

#1: Protein
General secretion pathway protein GspD


Mass: 26227.707 Da / Num. of mol.: 4 / Fragment: N-terminal domain (UNP residues 40-277) / Mutation: K38A
Source method: isolated from a genetically manipulated source
Details: RESIDUES 1-238, SURFACE ENTROPY MUTATION K38A / Source: (gene. exp.) Escherichia coli (E. coli) / Strain: H10407 / Gene: gspD / Plasmid: pProEX HTb / Production host: Escherichia coli (E. coli) / Strain (production host): BL21 / References: UniProt: B3IFK0, UniProt: Q707C1*PLUS
#2: Antibody
NANOBODY NBGSPD_7


Mass: 13748.146 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) LAMA GLAMA (llama) / Gene: NBGSPD_7 / Plasmid: PHEN6 / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3)
#3: Chemical
ChemComp-PO4 / PHOSPHATE ION / Phosphate


Mass: 94.971 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: PO4
#4: Chemical
ChemComp-CL / CHLORIDE ION / Chloride


Mass: 35.453 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Cl
#5: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 264 / Source method: isolated from a natural source / Formula: H2O

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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: 3.52 Å3/Da / Density % sol: 65.09 %
Crystal growTemperature: 298 K / pH: 5
Details: 1.0M NA/K PHOSPHATE, pH 5.0, vapor diffusion, sitting drop, temperature 298K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL9-2 / Wavelength: 0.9791
DetectorType: MARMOSAIC 325 mm CCD / Detector: CCD / Date: May 8, 2007
RadiationMonochromator: DOUBLE CRYSTAL SI(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9791 Å / Relative weight: 1
ReflectionResolution: 2.4→50 Å / Num. obs: 86152 / % possible obs: 91.7 % / Observed criterion σ(I): -3 / Biso Wilson estimate: 57.73 Å2 / Rmerge(I) obs: 0.086
Reflection shellResolution: 2.8→2.9 Å / Rmerge(I) obs: 0.767 / Mean I/σ(I) obs: 2.2 / % possible all: 91.7

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Phasing

PhasingMethod: SAD
Phasing dmFOM : 0.7 / FOM acentric: 0.7 / FOM centric: 0.72 / Reflection: 43800 / Reflection acentric: 39357 / Reflection centric: 4443
Phasing dm shell
Resolution (Å)FOM FOM acentricFOM centricReflectionReflection acentricReflection centric
8.3-37.6050.940.950.8822041611593
5.2-8.30.850.860.7864725538934
4.1-5.20.870.870.8181497265884
3.6-4.10.780.780.7678697162707
3.1-3.60.610.610.611261811696922
2.9-3.10.340.340.3164886085403

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Processing

Software
NameVersionClassificationNB
XSCALEdata scaling
SHELXphasing
RESOLVE2.13phasing
REFMACrefinement
PDB_EXTRACT3.006data extraction
SHELXDphasing
RefinementMethod to determine structure: SAD / Resolution: 2.8→47.67 Å / Cor.coef. Fo:Fc: 0.94 / Cor.coef. Fo:Fc free: 0.908 / Occupancy max: 1 / Occupancy min: 1 / SU B: 23.406 / SU ML: 0.235 / TLS residual ADP flag: LIKELY RESIDUAL / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.499 / ESU R Free: 0.301 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.239 2813 5.1 %RANDOM
Rwork0.192 ---
obs0.194 55400 97 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso mean: 50.77 Å2
Baniso -1Baniso -2Baniso -3
1--0.12 Å2-0.06 Å20 Å2
2---0.12 Å20 Å2
3---0.18 Å2
Refinement stepCycle: LAST / Resolution: 2.8→47.67 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms9740 0 44 264 10048
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0080.0229880
X-RAY DIFFRACTIONr_bond_other_d0.0010.026575
X-RAY DIFFRACTIONr_angle_refined_deg1.0631.95913377
X-RAY DIFFRACTIONr_angle_other_deg0.7953.00116023
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.58151251
X-RAY DIFFRACTIONr_dihedral_angle_2_deg38.34424.324444
X-RAY DIFFRACTIONr_dihedral_angle_3_deg14.37151730
X-RAY DIFFRACTIONr_dihedral_angle_4_deg16.7521588
X-RAY DIFFRACTIONr_chiral_restr0.0620.21582
X-RAY DIFFRACTIONr_gen_planes_refined0.0030.0210953
X-RAY DIFFRACTIONr_gen_planes_other0.0010.021899
X-RAY DIFFRACTIONr_nbd_refined0.2030.21823
X-RAY DIFFRACTIONr_nbd_other0.1880.26558
X-RAY DIFFRACTIONr_nbtor_refined0.1720.24704
X-RAY DIFFRACTIONr_nbtor_other0.0810.25585
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1520.2263
X-RAY DIFFRACTIONr_xyhbond_nbd_other0.0030.21
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.2040.219
X-RAY DIFFRACTIONr_symmetry_vdw_other0.1930.261
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.210.26
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it0.431.58133
X-RAY DIFFRACTIONr_mcbond_other0.0531.52587
X-RAY DIFFRACTIONr_mcangle_it0.479210151
X-RAY DIFFRACTIONr_scbond_it0.75234077
X-RAY DIFFRACTIONr_scangle_it1.1894.53226
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
Refine LS restraints NCS

Refine-ID: X-RAY DIFFRACTION

Ens-IDDom-IDAuth asym-IDNumberTypeRms dev position (Å)Weight position
11A1572medium positional0.240.5
12C1572medium positional0.250.5
13E1572medium positional0.220.5
14G1572medium positional0.220.5
21B1512medium positional0.230.5
22D1512medium positional0.30.5
23F1512medium positional0.220.5
24H1512medium positional0.220.5
11A1572medium thermal0.192
12C1572medium thermal0.222
13E1572medium thermal0.242
14G1572medium thermal0.212
21B1512medium thermal0.22
22D1512medium thermal0.212
23F1512medium thermal0.192
24H1512medium thermal0.212
LS refinement shellResolution: 2.8→2.87 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.3 200 -
Rwork0.278 3811 -
obs--97.69 %
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)
13.552-1.7862-0.994711.5822.36254.7011-0.0837-0.4423-0.57410.43450.4945-0.63410.2650.6674-0.4108-0.09930.0007-0.119-0.1477-0.0218-0.063256.442-26.82228.606
22.34140.31271.7673.55961.43295.9199-0.2182-0.1099-0.11590.01990.2961-0.0304-0.09620.1299-0.07790.0687-0.0952-0.011-0.153-0.07770.076248.009-24.63816.416
30.19680.01810.17451.3012-3.025411.1990.02910.4248-0.0041-0.04260.17460.3180.9366-0.4502-0.20370.1709-0.25180.09320.1133-0.17560.306542.689-29.098-15.562
423.26211.75971.16848.63195.31689.8309-0.5046-0.5052-1.46380.68580.35810.31142.1573-0.01890.14650.2622-0.23370.3873-0.1153-0.28090.062244.118-34.029-24.994
55.17790.00590.7312.1753-0.43730.90380.119-0.16330.17310.53910.00960.329-0.1333-0.0485-0.12860.1029-0.13920.0951-0.21920.00040.106229.759-14.468.589
611.3924-5.15953.586512.0573-3.158.8285-0.2032-1.1298-0.27771.46360.4670.8183-0.7124-0.1419-0.26380.07490.10730.3526-0.09440.1923-0.300147.844-11.804100.978
73.7154-1.53571.11264.1338-0.42084.16240.1924-0.2296-0.24970.4383-0.01170.40410.17180.0016-0.18070.08150.13320.1186-0.12850.0941-0.054649.623-8.31186.727
81.12710.26874.11120.09470.694817.64680.0061-0.0529-0.299-0.20050.05410.1185-0.6874-0.5101-0.06030.2250.2855-0.08210.0389-0.010.341337.648-6.92255.909
910.8239-2.77614.707210.0193-7.115415.3859-0.4119-0.95040.10241.18660.18760.9721-0.3615-0.83450.22430.00120.135-0.1101-0.1956-0.11530.265729.097-7.06149.014
101.4987-0.202-1.31555.254-1.62772.99440.0337-0.09710.23830.22860.0355-0.5018-0.08030.166-0.0692-0.06920.13240.0371-0.1240.0390.027263.4280.53771.515
115.57152.0432.31789.91643.64834.8332-0.00140.7915-0.332-0.11890.4747-1.24660.2750.2507-0.4732-0.2385-0.07110.1484-0.0613-0.26520.077970.749-21.292-18.476
122.7131-0.58890.15295.88574.66113.92530.02950.33190.1337-0.057-0.0662-0.06960.055-0.05960.0367-0.0319-0.13240.0549-0.073-0.11390.12460.877-13.595-10.795
135.0055-1.5859-9.49780.51593.104818.70180.25160.00910.6413-0.13770.53230.0978-0.46720.1517-0.78390.5448-0.10530.0371-0.1539-0.09110.399551.573-0.18818.6
1420.4152-3.8878-13.900213.8727-8.200618.42490.4199-1.15990.202-1.109-0.9098-2.5181-1.21322.98280.4899-0.0029-0.12780.1676-0.24230.05360.433755.0635.24829.035
153.6885-1.21290.00444.75560.09030.9676-0.11870.40320.1278-0.18670.16770.0424-0.0321-0.0629-0.049-0.0533-0.21880.0608-0.1213-0.00620.102642.024-1.523-11.623
169.7176-1.6613.26857.766-0.37036.61360.1243-0.0141-0.836-0.76410.16482.4260.3272-0.7852-0.2891-0.2091-0.1116-0.1546-0.16290.00280.852229.909-34.83860.493
175.5342-1.55221.16755.1992-0.67092.4273-0.15580.0812-0.2737-0.4194-0.00050.83060.044-0.24180.1564-0.02710.096-0.0178-0.1270.03120.193342.016-28.73462.62
185.7124-0.20131.29799.39311.26942.1124-0.3202-0.0345-0.50450.36760.22790.5650.47360.02160.09230.00140.11180.0619-0.16740.0810.048349.981-32.64668.43
1913.53471.6944-0.762511.0026-2.31972.5716-0.44530.2087-0.02550.310.4553-0.945-0.13780.2098-0.00990.24450.328-0.1552-0.0175-0.04440.079273.342-22.38190.682
204.0365-0.6322-0.69213.2511-0.13710.8768-0.06740.1484-0.1636-0.4349-0.0405-0.179-0.0118-0.08530.10780.0790.13510.0676-0.15620.043-0.0561.887-20.2454.411
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1A4 - 47
2X-RAY DIFFRACTION2A48 - 153
3X-RAY DIFFRACTION3A154 - 209
4X-RAY DIFFRACTION4A213 - 235
5X-RAY DIFFRACTION5B1 - 120
6X-RAY DIFFRACTION6C4 - 47
7X-RAY DIFFRACTION7C48 - 153
8X-RAY DIFFRACTION8C154 - 209
9X-RAY DIFFRACTION9C214 - 235
10X-RAY DIFFRACTION10D1 - 120
11X-RAY DIFFRACTION11E4 - 47
12X-RAY DIFFRACTION12E48 - 152
13X-RAY DIFFRACTION13E153 - 217
14X-RAY DIFFRACTION14E222 - 235
15X-RAY DIFFRACTION15F1 - 120
16X-RAY DIFFRACTION16G4 - 47
17X-RAY DIFFRACTION17G48 - 126
18X-RAY DIFFRACTION18G127 - 163
19X-RAY DIFFRACTION19G164 - 235
20X-RAY DIFFRACTION20H1 - 120

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