[English] 日本語
Yorodumi
- PDB-7cje: Structural and kinetic characterization of Porphyromonas gingival... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 7cje
TitleStructural and kinetic characterization of Porphyromonas gingivalis glutaminyl cyclase
ComponentsGlutamine cyclotransferase-related protein
KeywordsANTIBIOTIC / glutaminyl cyclase / pyroglutamate / prophyromonas gingivalis
Function / homologyGlutaminyl-peptide cyclotransferase-like / Peptidase M28 / Peptidase family M28 / acyltransferase activity / Prokaryotic membrane lipoprotein lipid attachment site profile. / Glutamine cyclotransferase-related protein
Function and homology information
Biological speciesPorphyromonas gingivalis (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.950006936 Å
AuthorsRuiz-Carrillo, D. / Lamers, S. / Feng, Q. / Yu, S. / Sun, B. / Jiang, J. / Lukman, M.
Funding support China, 1items
OrganizationGrant numberCountry
Other private China
CitationJournal: Biol.Chem. / Year: 2021
Title: Structural and kinetic characterization of Porphyromonas gingivalis glutaminyl cyclase.
Authors: Lamers, S. / Feng, Q. / Cheng, Y. / Yu, S. / Sun, B. / Lukman, M. / Jiang, J. / Ruiz-Carrillo, D.
History
DepositionJul 10, 2020Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0May 5, 2021Provider: repository / Type: Initial release
Revision 1.1Jun 9, 2021Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.2Nov 29, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: atom_type / chem_comp_atom ...atom_type / chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_ncs_dom_lim
Item: _atom_type.pdbx_N_electrons / _atom_type.pdbx_scat_Z ..._atom_type.pdbx_N_electrons / _atom_type.pdbx_scat_Z / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ncs_dom_lim.beg_auth_comp_id / _struct_ncs_dom_lim.beg_label_asym_id / _struct_ncs_dom_lim.beg_label_comp_id / _struct_ncs_dom_lim.beg_label_seq_id / _struct_ncs_dom_lim.end_auth_comp_id / _struct_ncs_dom_lim.end_label_asym_id / _struct_ncs_dom_lim.end_label_comp_id / _struct_ncs_dom_lim.end_label_seq_id

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: Glutamine cyclotransferase-related protein
C: Glutamine cyclotransferase-related protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)73,4027
Polymers73,1312
Non-polymers2725
Water5,603311
1
A: Glutamine cyclotransferase-related protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)36,7474
Polymers36,5651
Non-polymers1823
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area200 Å2
ΔGint-48 kcal/mol
Surface area11410 Å2
MethodPISA
2
C: Glutamine cyclotransferase-related protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)36,6553
Polymers36,5651
Non-polymers902
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area200 Å2
ΔGint-48 kcal/mol
Surface area11550 Å2
MethodPISA
Unit cell
Length a, b, c (Å)90.800, 90.800, 164.500
Angle α, β, γ (deg.)90.000, 90.000, 120.000
Int Tables number152
Space group name H-MP3121
Space group name HallP312"
Noncrystallographic symmetry (NCS)NCS domain:
IDEns-ID
11
21

NCS domain segments:

Ens-ID: 1

Dom-IDComponent-IDBeg auth comp-IDBeg label comp-IDEnd auth comp-IDEnd label comp-IDSelection detailsAuth asym-IDLabel asym-IDAuth seq-IDLabel seq-ID
11ALAALAVALVAL(chain 'A' and (resid 41 through 53 or resid 56...AA41 - 5341 - 53
12GLNGLNILEILE(chain 'A' and (resid 41 through 53 or resid 56...AA56 - 9456 - 94
13ALAALATHRTHR(chain 'A' and (resid 41 through 53 or resid 56...AA96 - 10096 - 100
14LEULEUVALVAL(chain 'A' and (resid 41 through 53 or resid 56...AA102 - 328102 - 328
21ALAALAVALVAL(chain 'C' and (resid 41 through 53 or resid 56...CB41 - 5341 - 53
22GLNGLNILEILE(chain 'C' and (resid 41 through 53 or resid 56...CB56 - 9456 - 94
23ALAALATHRTHR(chain 'C' and (resid 41 through 53 or resid 56...CB96 - 10096 - 100
24LEULEUVALVAL(chain 'C' and (resid 41 through 53 or resid 56...CB102 - 328102 - 328

-
Components

#1: Protein Glutamine cyclotransferase-related protein


Mass: 36565.383 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Porphyromonas gingivalis (strain ATCC BAA-308 / W83) (bacteria)
Strain: ATCC BAA-308 / W83 / Gene: PG_2157 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: Q7MT37
#2: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Formula: Zn
#3: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg
#4: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL / Glycerol


Mass: 92.094 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H8O3
#5: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 311 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestN

-
Experimental details

-
Experiment

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

-
Sample preparation

CrystalDensity Matthews: 2.78 Å3/Da / Density % sol: 55.73 %
Crystal growTemperature: 287.15 K / Method: vapor diffusion, hanging drop
Details: Purified PgQC was concentrated up to 50 mg/ml and it was mixed in a 1:0.7 volume ratio with the crystallization buffer (0.1 M TRIS pH 8.0, 0.3 M MgNO3(H2O)6, 24% (w/v) PEG8000) incubating at ...Details: Purified PgQC was concentrated up to 50 mg/ml and it was mixed in a 1:0.7 volume ratio with the crystallization buffer (0.1 M TRIS pH 8.0, 0.3 M MgNO3(H2O)6, 24% (w/v) PEG8000) incubating at 14 C and using the hanging drop vapor diffusion technique.
PH range: pH 8

-
Data collection

DiffractionMean temperature: 120 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: SSRF / Beamline: BL18U1 / Wavelength: 0.97853 Å
DetectorType: DECTRIS PILATUS3 S 6M / Detector: PIXEL / Date: Dec 12, 2018
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97853 Å / Relative weight: 1
ReflectionResolution: 1.95→19.98 Å / Num. obs: 110402 / % possible obs: 99.86 % / Redundancy: 39.8 % / Biso Wilson estimate: 38.2277098776 Å2 / CC1/2: 0.987 / CC star: 0.997 / Rmerge(I) obs: 0.3065 / Rpim(I) all: 0.04962 / Rrim(I) all: 0.3106 / Net I/σ(I): 14.94
Reflection shellResolution: 2→2.072 Å / Redundancy: 40.5 % / Rmerge(I) obs: 2.402 / Mean I/σ(I) obs: 1.45 / Num. unique obs: 5251 / CC1/2: 0.701 / CC star: 0.908 / Rpim(I) all: 0.3814 / Rrim(I) all: 2.432 / % possible all: 100

-
Processing

Software
NameVersionClassification
PHENIX1.12_2829refinement
XDSdata reduction
XSCALEdata scaling
BALBESphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 3GUX
Resolution: 1.950006936→19.8935993803 Å / SU ML: 0.190236397978 / Cross valid method: THROUGHOUT / σ(F): 1.37863167132 / Phase error: 20.2235388105
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
RfactorNum. reflection% reflectionSelection details
Rfree0.209187450181 3829 3.46823427112 %RANDOM
Rwork0.182509299419 106573 --
obs0.183418915358 110402 99.919450453 %-
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso mean: 47.1182954709 Å2
Refinement stepCycle: LAST / Resolution: 1.950006936→19.8935993803 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4476 0 10 311 4797
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.01730096393554606
X-RAY DIFFRACTIONf_angle_d1.368518880166263
X-RAY DIFFRACTIONf_chiral_restr0.0892658813886656
X-RAY DIFFRACTIONf_plane_restr0.00867939823428828
X-RAY DIFFRACTIONf_dihedral_angle_d17.75529937992655
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
1.950006936-1.97470.2972819533981400.2555122142653897X-RAY DIFFRACTION98.3195323916
1.9747-2.00060.2855901304991440.251681418313866X-RAY DIFFRACTION99.7016409746
2.0006-2.0280.2678148035081440.2409915530223943X-RAY DIFFRACTION100
2.028-2.0570.2357825423621460.2275951453364005X-RAY DIFFRACTION100
2.057-2.08760.2494511225721420.2323300920563917X-RAY DIFFRACTION100
2.0876-2.12020.3089329468151460.2315465683443950X-RAY DIFFRACTION99.9755918965
2.1202-2.15490.2387732075091360.2290321962814017X-RAY DIFFRACTION100
2.1549-2.1920.2714858207761400.217121640983901X-RAY DIFFRACTION100
2.192-2.23180.219435652441400.2097957743993995X-RAY DIFFRACTION100
2.2318-2.27470.2503418493491480.2017574677083943X-RAY DIFFRACTION100
2.2747-2.32110.238486939581380.206311360783946X-RAY DIFFRACTION100
2.3211-2.37150.2531590057361380.2147923246383918X-RAY DIFFRACTION100
2.3715-2.42650.2587510515351460.2126305156953978X-RAY DIFFRACTION100
2.4265-2.48710.2527316788151380.2026276486753865X-RAY DIFFRACTION99.950062422
2.4871-2.55420.2274298019361440.2018896680264018X-RAY DIFFRACTION100
2.5542-2.62920.2299349541051350.1917827284713953X-RAY DIFFRACTION100
2.6292-2.71390.2357172618161380.1955847002053949X-RAY DIFFRACTION100
2.7139-2.81060.2655016047071440.1922934027183958X-RAY DIFFRACTION100
2.8106-2.92280.1855164814781460.1855164814783954X-RAY DIFFRACTION100
2.9228-3.05540.2597084747621320.1870950571823928X-RAY DIFFRACTION100
3.0554-3.21590.1856541732981440.1856541732983970X-RAY DIFFRACTION99.9756986634
3.2159-3.41640.222449417411420.1808547477013968X-RAY DIFFRACTION100
3.4164-3.67870.1960384697691360.1686320079563935X-RAY DIFFRACTION99.9754420432
3.6787-4.0460.1756077138551440.1616213795113947X-RAY DIFFRACTION99.951136086
4.046-4.62510.1934422644131500.1500264989433953X-RAY DIFFRACTION99.9756335283
4.6251-5.8030.1678212009641460.1673154651183942X-RAY DIFFRACTION100
5.803-19.89359938030.1764766104161420.1640064722563957X-RAY DIFFRACTION100
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)
13.92718305990.352113209854-0.6653420124313.946205306780.1024688485934.539534935-0.1764039158050.359210373703-0.210878035432-0.1908113346170.140508975944-0.1046638876780.104358868336-0.1712073007020.03503619378310.230420814424-0.057564357925-0.03126622067090.270605903720.06269381019540.2088080712986.820922578757.083651471114.4048997511
23.568515876220.396724877649-0.1799700366422.87024773643-0.3391038796424.18261727921-0.01007561712570.0374575124349-0.3883575682830.00606065600465-0.1780886905860.1511570184430.516011538549-0.2342959864090.1885087880490.251574099687-0.0240711322187-0.0002909296647840.326456236910.06476999766650.24469398228586.402219016549.185305202520.3035385698
38.40583526117-0.1210653609840.1691810691576.11798806671-1.871224406715.4272337634-0.0271792788842-0.3708535146570.7557936595090.625285743766-0.003180265721230.181830337527-1.00452768172-0.4354000770350.02580681515020.373964677310.025863842736-0.02019842053550.3051992972190.04153378136970.22433026556984.031253879367.063201896923.9882893166
46.501658117453.047307559550.3850019827637.647966122770.2635544786596.817581004580.0475420872791-0.48258582782-1.264625449050.323949997856-0.316959860887-1.322832303110.8977519447570.4594471179590.244919357870.3494919776460.009721362052630.005814664100960.3792755355990.1199015189170.49923729572397.185733325647.006965330722.2156290589
57.724530171960.204200056953-3.369687441242.30130399901-1.266068986334.086362400080.32566334967-0.5323307933330.3769200672890.469747854608-0.332505647766-0.608239999673-0.6602436361751.10448985512-0.004055799555550.405331144407-0.173824440958-0.08409851061490.4946141009530.1283738591010.40673529159896.468063995162.147801929227.9975066408
62.44892521527-2.721105268733.421759686264.38148996238-1.858562312187.590388112540.126170186646-0.249796812078-0.07430750143470.395980034691-0.0670517891962-0.3693614816490.2125048376050.09204402600160.01035008862880.319327505932-0.089542041153-0.0138274735430.3195603167330.09448255307890.27416617290185.2545981950.130931400336.6698490916
73.95904548845-0.252031899205-1.027631683582.97410692987-1.317254088373.26027722354-0.00421989884929-0.283069812376-0.3195181427890.368234167621-0.0295316272632-0.1192286822520.0817839607263-0.1157573472470.04025364564560.36650159547-0.083707031263-0.09190304314390.3511935173010.08792107400030.2826427440385.747318676852.152147207136.2657555169
84.07507245132-2.882710256792.261488997994.20581961424-2.187694814445.212337969240.0026952508514-0.0540450930804-0.658794312732-0.2597382760270.3083631208490.6325770541990.972488625667-1.33782656183-0.3221446845510.483856883589-0.240884802518-0.0130785686770.5775873643750.04108554557570.48640124781876.071872044943.312177956322.1679272735
99.064553470411.364137663355.644807418067.340447511262.246357584418.81081567018-0.0589770574849-0.4348968711410.8435872776420.570590348692-0.0608065476360.440338845547-0.772563939236-0.6475870955190.138945671440.4111368857550.05737272591950.03638890903850.3605640958140.08323886813240.28038425229178.276203300164.087757913632.7822535762
107.585152155510.406809728111-1.340392658737.44790692552-0.2512060447255.918741505330.1251751679-0.943803383679-0.9794412548780.15153320516-0.1043428204460.3872116096650.320544952826-0.28748964312-0.06113116568120.29809655182-0.0486510428589-0.005334393742230.2918365230750.06450502584970.29280425314998.173986865574.072978105314.5297523664
112.34143157419-0.1668697275870.09816545122112.56961191490.4207010252734.188697291070.08402185240640.0406905502201-0.703751319631-0.414163855971-0.187242297517-1.145403929390.8242937363851.04681059040.09817905497480.5690862473530.1841944184950.1529674895990.4750438540640.1414692299610.806536032637111.78969890167.76034637643.22524896337
121.872159010961.79719602655-0.9939675087594.410367822351.558819598612.9547797746-0.066938379476-0.626246893821-0.3696089030620.00619862642907-0.0149717511714-0.956858675720.06272754039490.6504136832160.02459696269790.2987052728050.1083781734220.115825403030.4853777436950.1005062484580.621040013328112.48832306277.87026827839.09844466296
133.65898156211.55600943956-0.5648476199835.836252846981.002312992044.16575050719-0.148019401164-0.0152999266859-0.0873661849317-0.487495984567-0.01497768122210.328031629705-0.0131559711233-0.3195783894830.1486927796560.3654269208490.03791820269010.01722635701930.2209240044030.03896960056880.33461178226496.060869863975.41880576310.90160378836
143.754238453350.7254409358343.607499795295.182709283683.111929124719.29104860189-0.2415735147790.135594852835-0.29956919476-0.5236835620660.21737929977-1.573111256-0.4869614492931.22353883386-0.04004430329860.461160186350.07724690120050.2430818449910.6157449415330.07234692517990.963501481581119.69086818679.26958720510.67295579652
152.289245083150.0120372103049-0.001986516720584.727502696561.657019721626.27459764566-0.05592672555310.016387134265-0.024533134466-0.806655382106-0.0859472735104-0.356842150661-0.4555412925660.4793944223930.09919597755120.32916617286-0.002749071716340.05646687293880.2600812311980.02121079843330.337457998066106.65922165387.0015382371-0.519151154674
163.78187057037-1.25498640788-0.8794000041774.412472982660.524365112956.9314309847-0.0554690320568-0.212809593090.571693322241-0.232525406128-0.06111403930430.104460176532-1.121495282250.02699375747730.09852472828960.3994005116450.00445215737504-0.05203344069540.201580530764-0.04012336000720.35837824011497.67781312694.93905597124.73563011048
173.27830454210.1500355200760.01757355099046.592793928722.114934291839.25892802669-0.128253908675-0.2066070635810.0496578878373-0.3601884817750.163547697138-1.1042204104-0.3483387215461.32144722306-0.06976241087820.298252831272-0.03000907181630.06475528154430.3872378433060.04679444975620.527118330346111.93208582589.38685156192.85852503597
183.269525869541.418195259722.095873097866.637895026890.1723638412517.366813100540.308404927728-1.28207071764-0.06804026216950.78722496876-0.518297858642-0.9965463766340.1439932600191.066819058580.2054509665580.356413629882-0.0114400810159-0.0979007365760.7111385845090.06964054309320.516660001413110.94758209582.739698708419.9700135264
198.66309962894-0.9500354110821.410676769488.38811374767-1.493621267147.42862599637-0.076952221777-0.03421884285080.0736572612898-0.796971101938-0.1176622593750.716814479955-0.361350273779-1.499140380610.1374056126090.3110066560630.0303229318965-0.01338942220250.276807458503-0.05198560277820.43175456497392.682440557184.83409128524.40170735344
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection details
1X-RAY DIFFRACTION1chain 'A' and (resid 41 through 111 )
2X-RAY DIFFRACTION2chain 'A' and (resid 112 through 150 )
3X-RAY DIFFRACTION3chain 'A' and (resid 151 through 179 )
4X-RAY DIFFRACTION4chain 'A' and (resid 180 through 202 )
5X-RAY DIFFRACTION5chain 'A' and (resid 203 through 218 )
6X-RAY DIFFRACTION6chain 'A' and (resid 219 through 237 )
7X-RAY DIFFRACTION7chain 'A' and (resid 238 through 294 )
8X-RAY DIFFRACTION8chain 'A' and (resid 295 through 309 )
9X-RAY DIFFRACTION9chain 'A' and (resid 310 through 328 )
10X-RAY DIFFRACTION10chain 'C' and (resid 41 through 59 )
11X-RAY DIFFRACTION11chain 'C' and (resid 60 through 111 )
12X-RAY DIFFRACTION12chain 'C' and (resid 112 through 150 )
13X-RAY DIFFRACTION13chain 'C' and (resid 151 through 179 )
14X-RAY DIFFRACTION14chain 'C' and (resid 180 through 202 )
15X-RAY DIFFRACTION15chain 'C' and (resid 203 through 237 )
16X-RAY DIFFRACTION16chain 'C' and (resid 238 through 261 )
17X-RAY DIFFRACTION17chain 'C' and (resid 262 through 294 )
18X-RAY DIFFRACTION18chain 'C' and (resid 295 through 309 )
19X-RAY DIFFRACTION19chain 'C' and (resid 310 through 329 )

+
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://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