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Open data
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Basic information
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Title | CryoEM structure of Helicobacter pylori UreFD/urease complex | |||||||||||||||
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![]() | Urease / activation complex / UreA / UreB / UreC / UreF / UreD / UreH / Helicobacter pylori / HYDROLASE | |||||||||||||||
Function / homology | ![]() urease complex / urease / urease activity / urea catabolic process / metabolic process / nickel cation binding / cytoplasm Similarity search - Function | |||||||||||||||
Biological species | ![]() | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.3 Å | |||||||||||||||
![]() | Nim YS / Fong IYH / Deme J / Tsang KL / Caesar J / Johnson S / Wong KB / Lea SM | |||||||||||||||
Funding support | ![]() ![]() ![]()
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![]() | ![]() Title: Delivering a toxic metal to the active site of urease. Authors: Yap Shing Nim / Ivan Yu Hang Fong / Justin Deme / Ka Lung Tsang / Joseph Caesar / Steven Johnson / Longson Tsz Hin Pang / Nicholas Man Hon Yuen / Tin Long Chris Ng / Tung Choi / Yakie Yat ...Authors: Yap Shing Nim / Ivan Yu Hang Fong / Justin Deme / Ka Lung Tsang / Joseph Caesar / Steven Johnson / Longson Tsz Hin Pang / Nicholas Man Hon Yuen / Tin Long Chris Ng / Tung Choi / Yakie Yat Hei Wong / Susan M Lea / Kam-Bo Wong / ![]() ![]() ![]() Abstract: Urease is a nickel (Ni) enzyme that is essential for the colonization of in the human stomach. To solve the problem of delivering the toxic Ni ion to the active site without diffusing into the ...Urease is a nickel (Ni) enzyme that is essential for the colonization of in the human stomach. To solve the problem of delivering the toxic Ni ion to the active site without diffusing into the cytoplasm, cells have evolved metal carrier proteins, or metallochaperones, to deliver the toxic ions to specific protein complexes. Ni delivery requires urease to form an activation complex with the urease accessory proteins UreFD and UreG. Here, we determined the cryo-electron microscopy structures of UreFD/urease and UreD/urease complexes at 2.3- and 2.7-angstrom resolutions, respectively. Combining structural, mutagenesis, and biochemical studies, we show that the formation of the activation complex opens a 100-angstrom-long tunnel, where the Ni ion is delivered through UreFD to the active site of urease. | |||||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 189.3 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 20.1 KB 20.1 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 14 KB | Display | ![]() |
Images | ![]() | 164.7 KB | ||
Filedesc metadata | ![]() | 6.6 KB | ||
Others | ![]() ![]() | 190.6 MB 190.6 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8hc1MC ![]() 8hcnC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Voxel size | X=Y=Z: 0.822 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #1
File | emd_34648_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_34648_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Helicobacter pylori UreFD/urease complex
Entire | Name: Helicobacter pylori UreFD/urease complex |
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Components |
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-Supramolecule #1: Helicobacter pylori UreFD/urease complex
Supramolecule | Name: Helicobacter pylori UreFD/urease complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 1.76 MDa |
-Macromolecule #1: Urease subunit alpha
Macromolecule | Name: Urease subunit alpha / type: protein_or_peptide / ID: 1 / Number of copies: 12 / Enantiomer: LEVO / EC number: urease |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 26.587662 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MKLTPKELDK LMLHYAGELA KKRKEKGIKL NYVEAVALIS AHIMEEARAG KKTAAELMQE GRTLLKPDDV MDGVASMIHE VGIEAMFPD GTKLVTVHTP IEANGKLVPG ELFLKNEDIT INEGKKAVSV KVKNVGDRPV QIGSHFHFFE VNRCLDFDRE K TFGKRLDI ...String: MKLTPKELDK LMLHYAGELA KKRKEKGIKL NYVEAVALIS AHIMEEARAG KKTAAELMQE GRTLLKPDDV MDGVASMIHE VGIEAMFPD GTKLVTVHTP IEANGKLVPG ELFLKNEDIT INEGKKAVSV KVKNVGDRPV QIGSHFHFFE VNRCLDFDRE K TFGKRLDI ASGTAVRFEP GEEKSVELID IGGNRRIFGF NALVDRQADN ESKKIALHRA KERGFHGAKS DDNYVKTIKE UniProtKB: Urease subunit alpha |
-Macromolecule #2: Urease subunit beta
Macromolecule | Name: Urease subunit beta / type: protein_or_peptide / ID: 2 / Number of copies: 12 / Enantiomer: LEVO / EC number: urease |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 61.759508 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MKKISRKEYV SMYGPTTGDK VRLGDTDLIA EVEHDYTIYG EELKFGGGKT LREGMSQSNN PSKEELDLII TNALIVDYTG IYKADIGIK DGKIAGIGKG GNKDMQDGVK NNLSVGPATE ALAGEGLIVT AGGIDTHIHF ISPQQIPTAF ASGVTTMIGG G TGPADGTN ...String: MKKISRKEYV SMYGPTTGDK VRLGDTDLIA EVEHDYTIYG EELKFGGGKT LREGMSQSNN PSKEELDLII TNALIVDYTG IYKADIGIK DGKIAGIGKG GNKDMQDGVK NNLSVGPATE ALAGEGLIVT AGGIDTHIHF ISPQQIPTAF ASGVTTMIGG G TGPADGTN ATTITPGRRN LKWMLRAAEE YSMNLGFLAK GNASNDASLA DQIEAGAIGF KIHEDWGTTP SAINHALDVA DK YDVQVAI HTDTLNEAGC VEDTMAAIAG RTMHTFHTEG AGGGHAPDII KVAGEHNILP ASTNPTIPFT VNTEAEHMDM LMV CHHLDK SIKEDVQFAD SRIRPQTIAA EDTLHDMGIF SITSSDSQAM GRVGEVITRT WQTADKNKKE FGRLKEEKGD NDNF RIKRY LSKYTINPAI AHGISEYVGS VEVGKVADLV LWSPAFFGVK PNMIIKGGFI ALSQMGDANA SIPTPQPVYY REMFA HHGK AKYDANITFV SQAAYDKGIK EELGLERQVL PVKNCRNITK KDMQFNDTTA HIEVNPETYH VFVDGKEVTS KPANKV SLA QLFSIF UniProtKB: Urease subunit beta |
-Macromolecule #3: Urease accessory protein UreH
Macromolecule | Name: Urease accessory protein UreH / type: protein_or_peptide / ID: 3 / Number of copies: 12 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 30.741244 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MNTYAQESKL RLKTKIGADG RCVIEDNFFT PPFKLMAPFY PKDDLAEIML LAVSPGMMRG DAQDVQLNIG PNCKLRITSQ SFEKIHNTE DGFASRDMHI VVGENAFLDF APFPLIPFEN AHFKGNTTIS LRSSSQLLYS AIIVAGRVAR NELFKFNRLH T KISILQDE ...String: MNTYAQESKL RLKTKIGADG RCVIEDNFFT PPFKLMAPFY PKDDLAEIML LAVSPGMMRG DAQDVQLNIG PNCKLRITSQ SFEKIHNTE DGFASRDMHI VVGENAFLDF APFPLIPFEN AHFKGNTTIS LRSSSQLLYS AIIVAGRVAR NELFKFNRLH T KISILQDE KPIYYDNTIL DPKTTDLNNM CMFDGYTHYL NLVLVNCPIE LSGVRECIEE SEGVDGAVSE TASSHLCVKA LA KGSEPLL HLREKIARLV TQTTTQKVWS HPQFEK UniProtKB: Urease accessory protein UreH |
-Macromolecule #4: Urease accessory protein UreF
Macromolecule | Name: Urease accessory protein UreF / type: protein_or_peptide / ID: 4 / Number of copies: 12 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 28.517635 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MDKGKSVKST EKSVGMPPKT PKTDNNAHVD NEFLILQVND AVFPIGSYTH SFGLETYIQQ KKVTNKESAL EYLKANLSSQ FLYTEMLSL KLTYESALQQ DLKKILGVEE VIMLSTSPME LRLANQKLGN RFIKTLQAMN ELDMGEFFNA YAQKTKDPTH A TSYGVFAA ...String: MDKGKSVKST EKSVGMPPKT PKTDNNAHVD NEFLILQVND AVFPIGSYTH SFGLETYIQQ KKVTNKESAL EYLKANLSSQ FLYTEMLSL KLTYESALQQ DLKKILGVEE VIMLSTSPME LRLANQKLGN RFIKTLQAMN ELDMGEFFNA YAQKTKDPTH A TSYGVFAA SLGIELKKAL AHYLDAQTSN MVINCVKSVP LSQNDGQKIL LSLQSPFNQL IEKTLELDES HLCTASVQND IK AMQHESL YSRLYMS UniProtKB: Urease accessory protein UreF |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 200 / Pretreatment - Type: GLOW DISCHARGE |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 48.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: -1.5 µm / Nominal defocus min: -0.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |