[English] 日本語
Yorodumi
- PDB-3ekp: Crystal Structure of the inhibitor Amprenavir (APV) in complex wi... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 3ekp
TitleCrystal Structure of the inhibitor Amprenavir (APV) in complex with a multi-drug resistant HIV-1 protease variant (L10I/G48V/I54V/V64I/V82A)Refer: FLAP+ in citation
ComponentsProtease
KeywordsHYDROLASE / HIV-1 / protease / multi-drug resistance / Amprenavir / AIDS
Function / homology
Function and homology information


HIV-1 retropepsin / retroviral ribonuclease H / exoribonuclease H / exoribonuclease H activity / host multivesicular body / DNA integration / viral genome integration into host DNA / RNA-directed DNA polymerase / establishment of integrated proviral latency / viral penetration into host nucleus ...HIV-1 retropepsin / retroviral ribonuclease H / exoribonuclease H / exoribonuclease H activity / host multivesicular body / DNA integration / viral genome integration into host DNA / RNA-directed DNA polymerase / establishment of integrated proviral latency / viral penetration into host nucleus / RNA stem-loop binding / RNA-directed DNA polymerase activity / host cell / RNA-DNA hybrid ribonuclease activity / Transferases; Transferring phosphorus-containing groups; Nucleotidyltransferases / symbiont-mediated suppression of host gene expression / viral nucleocapsid / DNA recombination / DNA-directed DNA polymerase / Hydrolases; Acting on ester bonds / aspartic-type endopeptidase activity / DNA-directed DNA polymerase activity / symbiont entry into host cell / lipid binding / host cell nucleus / host cell plasma membrane / structural molecule activity / virion membrane / proteolysis / DNA binding / zinc ion binding / membrane
Similarity search - Function
Reverse transcriptase connection / Reverse transcriptase connection domain / Reverse transcriptase thumb / Reverse transcriptase thumb domain / Integrase Zinc binding domain / Zinc finger integrase-type profile. / Integrase-like, N-terminal / Integrase DNA binding domain / Integrase, C-terminal domain superfamily, retroviral / Integrase, N-terminal zinc-binding domain ...Reverse transcriptase connection / Reverse transcriptase connection domain / Reverse transcriptase thumb / Reverse transcriptase thumb domain / Integrase Zinc binding domain / Zinc finger integrase-type profile. / Integrase-like, N-terminal / Integrase DNA binding domain / Integrase, C-terminal domain superfamily, retroviral / Integrase, N-terminal zinc-binding domain / Integrase, C-terminal, retroviral / Integrase DNA binding domain profile. / Immunodeficiency lentiviral matrix, N-terminal / gag gene protein p17 (matrix protein) / RNase H / Integrase core domain / Integrase, catalytic core / Integrase catalytic domain profile. / Retroviral nucleocapsid Gag protein p24, C-terminal domain / Gag protein p24 C-terminal domain / Retropepsin-like catalytic domain / Matrix protein, lentiviral and alpha-retroviral, N-terminal / Ribonuclease H domain / RNase H type-1 domain profile. / Reverse transcriptase (RNA-dependent DNA polymerase) / Reverse transcriptase domain / Reverse transcriptase (RT) catalytic domain profile. / Retropepsins / Retroviral aspartyl protease / Aspartyl protease, retroviral-type family profile. / Peptidase A2A, retrovirus, catalytic / Retrovirus capsid, C-terminal / Retroviral matrix protein / Retrovirus capsid, N-terminal / zinc finger / Zinc knuckle / Cathepsin D, subunit A; domain 1 / Acid Proteases / Zinc finger, CCHC-type superfamily / Zinc finger, CCHC-type / Zinc finger CCHC-type profile. / Aspartic peptidase, active site / Eukaryotic and viral aspartyl proteases active site. / Ribonuclease H superfamily / Aspartic peptidase domain superfamily / Ribonuclease H-like superfamily / Reverse transcriptase/Diguanylate cyclase domain / DNA/RNA polymerase superfamily / Beta Barrel / Mainly Beta
Similarity search - Domain/homology
Chem-478 / ACETATE ION / PHOSPHATE ION / Gag-Pol polyprotein
Similarity search - Component
Biological speciesHIV-1 M:B_ARV2/SF2 (virus)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / molecular replacement / Resolution: 2.15 Å
AuthorsPrabu-Jayabalan, M. / King, N.M. / Bandaranayake, R.M.
CitationJournal: Acs Chem.Biol. / Year: 2012
Title: Extreme Entropy-Enthalpy Compensation in a Drug-Resistant Variant of HIV-1 Protease.
Authors: King, N.M. / Prabu-Jeyabalan, M. / Bandaranayake, R.M. / Nalam, M.N. / Nalivaika, E.A. / Ozen, A. / Yilmaz, N.K. / Schiffer, C.A.
History
DepositionSep 19, 2008Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 1, 2009Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Advisory / Version format compliance
Revision 1.2Jul 25, 2012Group: Database references
Revision 1.3Oct 17, 2012Group: Database references
Revision 1.4Oct 25, 2017Group: Advisory / Refinement description / Category: pdbx_unobs_or_zero_occ_atoms / software
Item: _software.classification / _software.contact_author ..._software.classification / _software.contact_author / _software.contact_author_email / _software.date / _software.language / _software.location / _software.name / _software.type / _software.version
Revision 1.5Oct 20, 2021Group: Advisory / Database references / Derived calculations
Category: database_2 / pdbx_unobs_or_zero_occ_atoms ...database_2 / pdbx_unobs_or_zero_occ_atoms / 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 1.6Feb 21, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: Protease
B: Protease
C: Protease
D: Protease
hetero molecules


Theoretical massNumber of molelcules
Total (without water)45,36322
Polymers43,2634
Non-polymers2,10018
Water4,720262
1
A: Protease
B: Protease
hetero molecules


Theoretical massNumber of molelcules
Total (without water)22,87113
Polymers21,6322
Non-polymers1,24011
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6500 Å2
ΔGint-54 kcal/mol
Surface area9240 Å2
MethodPISA
2
C: Protease
D: Protease
hetero molecules


Theoretical massNumber of molelcules
Total (without water)22,4919
Polymers21,6322
Non-polymers8607
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area5920 Å2
ΔGint-24 kcal/mol
Surface area9100 Å2
MethodPISA
Unit cell
Length a, b, c (Å)91.969, 91.969, 106.222
Angle α, β, γ (deg.)90.000, 90.000, 120.000
Int Tables number169
Space group name H-MP61

-
Components

#1: Protein
Protease / Retropepsin / PR


Mass: 10815.788 Da / Num. of mol.: 4 / Fragment: UNP residues 491-589 / Mutation: Q7K,L10I,G48V,I54V,V64I,V82A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) HIV-1 M:B_ARV2/SF2 (virus) / Gene: gag-pol / Plasmid: pXC35 / Production host: Escherichia coli (E. coli) / Strain (production host): TAP106 / References: UniProt: P03369, HIV-1 retropepsin
#2: Chemical
ChemComp-PO4 / PHOSPHATE ION


Mass: 94.971 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: PO4
#3: Chemical
ChemComp-ACT / ACETATE ION


Mass: 59.044 Da / Num. of mol.: 12 / Source method: obtained synthetically / Formula: C2H3O2
#4: Chemical ChemComp-478 / {3-[(4-AMINO-BENZENESULFONYL)-ISOBUTYL-AMINO]-1-BENZYL-2-HYDROXY-PROPYL}-CARBAMIC ACID TETRAHYDRO-FURAN-3-YL ESTER / Amprenavir


Mass: 505.627 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C25H35N3O6S / Comment: protease inhibitor, medication*YM
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 262 / Source method: isolated from a natural source / Formula: H2O

-
Experimental details

-
Experiment

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

-
Sample preparation

CrystalDensity Matthews: 3 Å3/Da / Density % sol: 58.97 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 6.2
Details: Refer citation, pH 6.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K

-
Data collection

DiffractionMean temperature: 133 K
Diffraction sourceSource: ROTATING ANODE / Type: OTHER / Wavelength: 1.5418 Å
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Jan 29, 2005
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.15→23.75 Å / Num. all: 27531 / Num. obs: 27531 / Rmerge(I) obs: 0.054 / Net I/σ(I): 11.1

-
Phasing

PhasingMethod: molecular replacement

-
Processing

Software
NameVersionClassificationNB
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
REFMAC5.2.0005refinement
PDB_EXTRACT3.006data extraction
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.15→23.75 Å / Cor.coef. Fo:Fc: 0.951 / Cor.coef. Fo:Fc free: 0.929 / Occupancy max: 1 / Occupancy min: 0 / SU B: 8.159 / SU ML: 0.161 / TLS residual ADP flag: LIKELY RESIDUAL / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.226 / ESU R Free: 0.202 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.254 1384 5 %RANDOM
Rwork0.196 ---
all0.199 27472 --
obs0.199 27472 99.33 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso max: 81.08 Å2 / Biso mean: 39.665 Å2 / Biso min: 17.63 Å2
Baniso -1Baniso -2Baniso -3
1-0.48 Å20.24 Å20 Å2
2--0.48 Å20 Å2
3----0.71 Å2
Refinement stepCycle: LAST / Resolution: 2.15→23.75 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2960 0 138 262 3360
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0090.0223214
X-RAY DIFFRACTIONr_bond_other_d0.0010.023109
X-RAY DIFFRACTIONr_angle_refined_deg1.3312.0144388
X-RAY DIFFRACTIONr_angle_other_deg0.66237191
X-RAY DIFFRACTIONr_dihedral_angle_1_deg7.275410
X-RAY DIFFRACTIONr_dihedral_angle_2_deg38.7424.766107
X-RAY DIFFRACTIONr_dihedral_angle_3_deg15.215501
X-RAY DIFFRACTIONr_dihedral_angle_4_deg22.4371516
X-RAY DIFFRACTIONr_chiral_restr0.0890.2523
X-RAY DIFFRACTIONr_gen_planes_refined0.0090.023542
X-RAY DIFFRACTIONr_gen_planes_other0.0020.02584
X-RAY DIFFRACTIONr_nbd_refined0.1950.2517
X-RAY DIFFRACTIONr_nbd_other0.2010.23279
X-RAY DIFFRACTIONr_nbtor_refined0.1770.21472
X-RAY DIFFRACTIONr_nbtor_other0.0880.22129
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1710.2178
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.1630.233
X-RAY DIFFRACTIONr_symmetry_vdw_other0.1730.2106
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.1670.211
X-RAY DIFFRACTIONr_mcbond_it1.2081.52631
X-RAY DIFFRACTIONr_mcbond_other0.2451.5846
X-RAY DIFFRACTIONr_mcangle_it1.4223300
X-RAY DIFFRACTIONr_scbond_it2.28831299
X-RAY DIFFRACTIONr_scangle_it3.3244.51088
LS refinement shellResolution: 2.15→2.208 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.29 98 -
Rwork0.222 1921 -
all-2019 -
obs--100 %
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)
13.62630.42743.21873.09231.80216.61340.04650.057-0.24990.00330.0554-0.09220.15310.1265-0.1019-0.07180.00040.0041-0.05070-0.049820.9981-36.360935.3864
28.24935.6706-4.627813.4739-1.91952.7623-0.17910.5362-0.16850.28140.2099-0.10510.0467-0.6468-0.0308-0.0777-0.0220.01450.09970.02340.014412.7008-26.961930.8242
314.53260.5525-4.04953.9803-2.81622.91850.28170.21460.33820.355-0.00860.5013-0.31350.7033-0.27310.0242-0.10150.0038-0.0389-0.0036-0.01916.9998-24.432539.9866
46.7381.66157.88780.7444-1.88453.038-0.065-0.31150.17090.54690.1674-0.10630.1452-1.3558-0.1023-0.10260.0573-0.0277-0.0566-0.0176-0.05545.2153-16.59730.3244
53.8832.70795.1272.3444-0.066435.85380.14950.3480.0626-0.3626-0.08150.1928-0.62510.8106-0.068-0.03320.0079-0.0134-0.1179-0.028-0.021512.0161-13.0340.9781
615.6093-8.83088.11127.0054-9.438415.91920.22660.6364-0.43880.0348-0.03230.18110.0713-0.3976-0.1943-0.1088-0.0916-0.0081-0.0392-0.0184-0.09819.0083-26.417116.5254
72.907-5.1776-5.076217.27715.65513.04910.15030.02520.00570.36280.0951-0.5963-0.36430.4014-0.2455-0.1693-0.06330.005-0.01350.0311-0.096113.341-29.656154.2918
88.10724.8514-6.800911.0201-1.26536.674-0.01490.4432-0.5281-0.85860.41330.12251.07820.6501-0.3984-0.0843-0.07530.0808-0.0811-0.0613-0.073322.9968-31.80517.3042
99.222-6.3396-3.4598.3591-0.45773.30690.3799-0.8967-0.2831.03810.0114-0.76320.83670.4313-0.3912-0.104-0.0464-0.05930.040.0791-0.075915.9663-35.383454.1
1010.6468-3.191-0.9313.284-1.75691.86220.2287-0.26481.34850.3411-0.198-0.6135-0.3893-0.5932-0.0307-0.02740.01420.01940.02650.08610.081614.8865-18.108725.2031
110.90031.0709-1.36299.89192.59264.12370.08550.75370.4440.0706-0.06391.3095-0.53040.1951-0.0216-0.0539-0.02240.1017-0.0666-0.00280.0768.2425-21.948645.6235
124.4727-0.9717-1.31831.20481.90323.01910.01090.3908-0.0964-0.4990.0715-0.02690.0621-0.6076-0.0824-0.0253-0.05260.00180.04590.0007-0.014214.9308-31.530725.5487
130.90710.18190.94521.4223-1.88474.0894-0.0092-0.44180.20870.4321-0.1344-0.0661-0.37270.30850.1436-0.0055-0.05150.00160.03020.02740.00119.8502-28.697745.246
142.36323.32350.15965.8021-1.04231.43310.0746-0.11930.2557-0.11230.04290.4341-0.2994-0.538-0.1176-0.06820.05830.0093-0.016-0.0004-0.00164.077550.7538-8.8579
1510.6665-0.51791.8350.0371-0.38027.41940.1369-0.1421-0.0612-0.6059-0.03070.50220.24090.3429-0.10620.01630.0238-0.0195-0.01930.0126-0.022312.220340.1592-7.8884
165.2711-6.2254-2.63457.35623.24656.09530.1251-0.29620.28060.03950.03870.07020.35250.3496-0.1638-0.02430.0060.02220.0228-0.0011-0.027417.313848.9827-9.8285
175.53365.2034-6.262711.1771-10.41110.9250.4685-0.2922-0.0381-0.2193-0.7817-0.09460.32420.31640.3133-0.01860.0817-0.09-0.0015-0.054-0.043922.257832.5055-8.6074
183.95522.8761-6.01016.8109-8.148712.15750.0292-0.5334-0.0594-0.6541-0.1868-0.1318-0.05790.27120.1576-0.06850.0533-0.04160.0179-0.1176-0.000728.963544.1672-9.1136
191.3674-5.72561.295140.23243.24079.9965-0.0745-0.0775-0.12041.1289-0.23750.73330.6666-0.58570.312-0.1479-0.0877-0.03750.00380.0146-0.06996.297835.42835.7032
2062.681220.94947.483712.74132.63864.2739-0.6722-0.01120.46-0.64020.19260.2074-0.70450.18190.47960.0520.03950.0604-0.2234-0.0731-0.149518.351556.4136-23.395
2111.49322.0323-6.5010.3593-1.14953.67730.79660.010.1258-0.2139-1.36591.77630.116-1.52180.5693-0.0639-0.0906-0.07910.2306-0.0416-0.07581.469439.92925.1474
2226.82914.23742.74817.7937-5.85186.6278-0.69320.9920.5184-0.95190.63580.5105-0.66060.10130.05730.160.10120.006-0.1018-0.0515-0.097311.95558.5295-23.5768
232.00812.47450.72154.20831.33752.32920.12170.2202-0.06490.09340.1866-0.22480.30690.3439-0.3083-0.025-0.0233-0.0421-0.01550.0132-0.012417.939536.58410.3617
240.94551.73340.69854.041-0.45714.01290.20390.0654-0.05580.17890.1747-0.1280.00470.4501-0.3786-0.025-0.01190.0257-0.029-0.05030.003323.298245.8608-18.0685
257.50061.4307-5.35350.3045-0.89734.30570.4123-0.3703-0.39440.0767-0.15350.08130.1287-0.1482-0.2588-0.0611-0.0305-0.0256-0.00860.0042-0.00645.926838.9595-4.4965
266.6554-4.40772.82847.649-5.74484.37120.0970.03250.1399-0.60560.2129-0.1152-0.6860.1496-0.30990.0364-0.0019-0.0006-0.0685-0.0205-0.000115.211555.0308-13.1973
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1A1 - 5
2X-RAY DIFFRACTION1A94 - 99
3X-RAY DIFFRACTION1B1 - 5
4X-RAY DIFFRACTION1B94 - 99
5X-RAY DIFFRACTION2A25 - 30
6X-RAY DIFFRACTION3B25 - 30
7X-RAY DIFFRACTION4A45 - 55
8X-RAY DIFFRACTION5B45 - 55
9X-RAY DIFFRACTION6A60 - 66
10X-RAY DIFFRACTION7B60 - 66
11X-RAY DIFFRACTION8A68 - 72
12X-RAY DIFFRACTION9B68 - 72
13X-RAY DIFFRACTION10A74 - 84
14X-RAY DIFFRACTION11B74 - 84
15X-RAY DIFFRACTION12A86 - 92
16X-RAY DIFFRACTION13B86 - 92
17X-RAY DIFFRACTION14C1 - 5
18X-RAY DIFFRACTION14C94 - 99
19X-RAY DIFFRACTION14D1 - 5
20X-RAY DIFFRACTION14D94 - 99
21X-RAY DIFFRACTION15C25 - 30
22X-RAY DIFFRACTION16D25 - 30
23X-RAY DIFFRACTION17C45 - 55
24X-RAY DIFFRACTION18D45 - 55
25X-RAY DIFFRACTION19C60 - 66
26X-RAY DIFFRACTION20D60 - 66
27X-RAY DIFFRACTION21C68 - 72
28X-RAY DIFFRACTION22D68 - 72
29X-RAY DIFFRACTION23C74 - 84
30X-RAY DIFFRACTION24D74 - 84
31X-RAY DIFFRACTION25C86 - 92
32X-RAY DIFFRACTION26D86 - 92

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbjlvh1.pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242):Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more