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Yorodumi- EMDB-33763: BAM-EspP complex structure with BamA-G431C and G781C/EspP-N1293C ... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-33763 | |||||||||
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Title | BAM-EspP complex structure with BamA-G431C and G781C/EspP-N1293C and A1043C mutations in nanodisc | |||||||||
Map data | BAM-EspP pair1 3 nanodisc | |||||||||
Sample |
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Keywords | BAM / BamABCDE / EspP / Gram-negative bacteria / outer membrane protein / outer membrane barrel / BamA / BamB / BamC / BamD / BamE / MEMBRANE PROTEIN | |||||||||
Function / homology | Function and homology information Bam protein complex / Gram-negative-bacterium-type cell outer membrane assembly / protein insertion into membrane / Hydrolases; Acting on peptide bonds (peptidases); Serine endopeptidases / cell outer membrane / protein-macromolecule adaptor activity / periplasmic space / cell adhesion / serine-type endopeptidase activity / response to antibiotic ...Bam protein complex / Gram-negative-bacterium-type cell outer membrane assembly / protein insertion into membrane / Hydrolases; Acting on peptide bonds (peptidases); Serine endopeptidases / cell outer membrane / protein-macromolecule adaptor activity / periplasmic space / cell adhesion / serine-type endopeptidase activity / response to antibiotic / cell surface / proteolysis / extracellular region / identical protein binding / membrane Similarity search - Function | |||||||||
Biological species | Escherichia coli K-12 (bacteria) / Escherichia coli O157:H7 (bacteria) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.4 Å | |||||||||
Authors | Shen C / Chang S / Luo Q / Zhang Z / Luo B / Lu G / Zhu X / Wei X / Dong C / Zhang X ...Shen C / Chang S / Luo Q / Zhang Z / Luo B / Lu G / Zhu X / Wei X / Dong C / Zhang X / Tang X / Dong H | |||||||||
Funding support | China, 1 items
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Citation | Journal: Nature / Year: 2023 Title: Structural basis of BAM-mediated outer membrane β-barrel protein assembly. Authors: Chongrong Shen / Shenghai Chang / Qinghua Luo / Kevin Chun Chan / Zhibo Zhang / Bingnan Luo / Teng Xie / Guangwen Lu / Xiaofeng Zhu / Xiawei Wei / Changjiang Dong / Ruhong Zhou / Xing Zhang ...Authors: Chongrong Shen / Shenghai Chang / Qinghua Luo / Kevin Chun Chan / Zhibo Zhang / Bingnan Luo / Teng Xie / Guangwen Lu / Xiaofeng Zhu / Xiawei Wei / Changjiang Dong / Ruhong Zhou / Xing Zhang / Xiaodi Tang / Haohao Dong / Abstract: The outer membrane structure is common in Gram-negative bacteria, mitochondria and chloroplasts, and contains outer membrane β-barrel proteins (OMPs) that are essential interchange portals of ...The outer membrane structure is common in Gram-negative bacteria, mitochondria and chloroplasts, and contains outer membrane β-barrel proteins (OMPs) that are essential interchange portals of materials. All known OMPs share the antiparallel β-strand topology, implicating a common evolutionary origin and conserved folding mechanism. Models have been proposed for bacterial β-barrel assembly machinery (BAM) to initiate OMP folding; however, mechanisms by which BAM proceeds to complete OMP assembly remain unclear. Here we report intermediate structures of BAM assembling an OMP substrate, EspP, demonstrating sequential conformational dynamics of BAM during the late stages of OMP assembly, which is further supported by molecular dynamics simulations. Mutagenic in vitro and in vivo assembly assays reveal functional residues of BamA and EspP for barrel hybridization, closure and release. Our work provides novel insights into the common mechanism of OMP assembly. | |||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_33763.map.gz | 5 MB | EMDB map data format | |
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Header (meta data) | emd-33763-v30.xml emd-33763.xml | 24.6 KB 24.6 KB | Display Display | EMDB header |
Images | emd_33763.png | 58.5 KB | ||
Filedesc metadata | emd-33763.cif.gz | 7.6 KB | ||
Others | emd_33763_half_map_1.map.gz emd_33763_half_map_2.map.gz | 40.8 MB 40.8 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-33763 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-33763 | HTTPS FTP |
-Validation report
Summary document | emd_33763_validation.pdf.gz | 761.5 KB | Display | EMDB validaton report |
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Full document | emd_33763_full_validation.pdf.gz | 761.1 KB | Display | |
Data in XML | emd_33763_validation.xml.gz | 11.8 KB | Display | |
Data in CIF | emd_33763_validation.cif.gz | 13.8 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-33763 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-33763 | HTTPS FTP |
-Related structure data
Related structure data | 7ye4MC 7ye6C 8bnzC 8bo2C M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_33763.map.gz / Format: CCP4 / Size: 52.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Annotation | BAM-EspP pair1 3 nanodisc | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.014 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: BAM-EspP pair 1-3 nanodisc half map1
File | emd_33763_half_map_1.map | ||||||||||||
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Annotation | BAM-EspP pair 1-3 nanodisc half map1 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: BAM-EspP pair 1-3 nanodisc half map2
File | emd_33763_half_map_2.map | ||||||||||||
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Annotation | BAM-EspP pair 1-3 nanodisc half map2 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
-Entire : BAM-EspP complex with BamA-G431C and G781C/EspP-N1293C and A1043C...
Entire | Name: BAM-EspP complex with BamA-G431C and G781C/EspP-N1293C and A1043C mutations in nanodisc |
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Components |
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-Supramolecule #1: BAM-EspP complex with BamA-G431C and G781C/EspP-N1293C and A1043C...
Supramolecule | Name: BAM-EspP complex with BamA-G431C and G781C/EspP-N1293C and A1043C mutations in nanodisc type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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-Supramolecule #2: BAM
Supramolecule | Name: BAM / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#5 |
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Source (natural) | Organism: Escherichia coli K-12 (bacteria) |
-Supramolecule #3: EspP
Supramolecule | Name: EspP / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #6 |
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Source (natural) | Organism: Escherichia coli O157:H7 (bacteria) |
-Macromolecule #1: Outer membrane protein assembly factor BamA
Macromolecule | Name: Outer membrane protein assembly factor BamA / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Escherichia coli K-12 (bacteria) |
Molecular weight | Theoretical: 90.735562 KDa |
Recombinant expression | Organism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria) |
Sequence | String: MAMKKLLIAS LLFSSATVYG AEGFVVKDIH FEGLQRVAVG AALLSMPVRT GDTVNDEDIS NTIRALFATG NFEDVRVLRD GDTLLVQVK ERPTIASITF SGNKSVKDDM LKQNLEASGV RVGESLDRTT IADIEKGLED FYYSVGKYSA SVKAVVTPLP R NRVDLKLV ...String: MAMKKLLIAS LLFSSATVYG AEGFVVKDIH FEGLQRVAVG AALLSMPVRT GDTVNDEDIS NTIRALFATG NFEDVRVLRD GDTLLVQVK ERPTIASITF SGNKSVKDDM LKQNLEASGV RVGESLDRTT IADIEKGLED FYYSVGKYSA SVKAVVTPLP R NRVDLKLV FQEGVSAEIQ QINIVGNHAF TTDELISHFQ LRDEVPWWNV VGDRKYQKQK LAGDLETLRS YYLDRGYARF NI DSTQVSL TPDKKGIYVT VNITEGDQYK LSGVEVSGNL AGHSAEIEQL TKIEPGELYN GTKVTKMEDD IKKLLGRYGY AYP RVQSMP EINDADKTVK LRVNVDAGNR FYVRKIRFEG NDTSKDAVLR REMRQMEGAW LGSDLVDQGK ERLNRLGFFE TVDT DTQRV PGSPDQVDVV YKVKERNTGS FNFGICYGTE SGVSFQAGVQ QDNWLGTGYA VGINGTKNDY QTYAELSVTN PYFTV DGVS LGGRLFYNDF QADDADLSDY TNKSYGTDVT LGFPINEYNS LRAGLGYVHN SLSNMQPQVA MWRYLYSMGE HPSTSD QDN SFKTDDFTFN YGWTYNKLDR GYFPTDGSRV NLTGKVTIPG SDNEYYKVTL DTATYVPIDD DHKWVVLGRT RWGYGDG LG GKEMPFYENF YAGGSSTVRG FQSNTIGPKA VYFPHQASNY DPDYDYECAT QDGAKDLCKS DDAVGGNAMA VASLEFIT P TPFISDKYAN SVRTSFFWDM GTVWDTNWDS SQYSGYPDYS DPSNIRMSAG IALQWMSPLC PLVFSYAQPF KKYDGDKAE QFQFNIGKTW UniProtKB: Outer membrane protein assembly factor BamA |
-Macromolecule #2: Outer membrane protein assembly factor BamB
Macromolecule | Name: Outer membrane protein assembly factor BamB / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Escherichia coli K-12 (bacteria) |
Molecular weight | Theoretical: 41.918945 KDa |
Recombinant expression | Organism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria) |
Sequence | String: MQLRKLLLPG LLSVTLLSGC SLFNSEEDVV KMSPLPTVEN QFTPTTAWST SVGSGIGNFY SNLHPALADN VVYAADRAGL VKALNADDG KEIWSVSLAE KDGWFSKEPA LLSGGVTVSG GHVYIGSEKA QVYALNTSDG TVAWQTKVAG EALSRPVVSD G LVLIHTSN ...String: MQLRKLLLPG LLSVTLLSGC SLFNSEEDVV KMSPLPTVEN QFTPTTAWST SVGSGIGNFY SNLHPALADN VVYAADRAGL VKALNADDG KEIWSVSLAE KDGWFSKEPA LLSGGVTVSG GHVYIGSEKA QVYALNTSDG TVAWQTKVAG EALSRPVVSD G LVLIHTSN GQLQALNEAD GAVKWTVNLD MPSLSLRGES APTTAFGAAV VGGDNGRVSA VLMEQGQMIW QQRISQATGS TE IDRLSDV DTTPVVVNGV VFALAYNGNL TALDLRSGQI MWKRELGSVN DFIVDGNRIY LVDQNDRVMA LTIDGGVTLW TQS DLLHRL LTSPVLYNGN LVVGDSEGYL HWINVEDGRF VAQQKVDSSG FQTEPVAADG KLLIQAKDGT VYSITR UniProtKB: Outer membrane protein assembly factor BamB |
-Macromolecule #3: Outer membrane protein assembly factor BamC
Macromolecule | Name: Outer membrane protein assembly factor BamC / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Escherichia coli K-12 (bacteria) |
Molecular weight | Theoretical: 36.875277 KDa |
Recombinant expression | Organism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria) |
Sequence | String: MAYSVQKSRL AKVAGVSLVL LLAACSSDSR YKRQVSGDEA YLEAAPLAEL HAPAGMILPV TSGDYAIPVT NGSGAVGKAL DIRPPAQPL ALVSGARTQF TGDTASLLVE NGRGNTLWPQ VVSVLQAKNY TITQRDDAGQ TLTTDWVQWN RLDEDEQYRG R YQISVKPQ ...String: MAYSVQKSRL AKVAGVSLVL LLAACSSDSR YKRQVSGDEA YLEAAPLAEL HAPAGMILPV TSGDYAIPVT NGSGAVGKAL DIRPPAQPL ALVSGARTQF TGDTASLLVE NGRGNTLWPQ VVSVLQAKNY TITQRDDAGQ TLTTDWVQWN RLDEDEQYRG R YQISVKPQ GYQQAVTVKL LNLEQAGKPV ADAASMQRYS TEMMNVISAG LDKSATDAAN AAQNRASTTM DVQSAADDTG LP MLVVRGP FNVVWQRLPA ALEKVGMKVT DSTRSQGNMA VTYKPLSDSD WQELGASDPG LASGDYKLQV GDLDNRSSLQ FID PKGHTL TQSQNDALVA VFQAAFSK UniProtKB: Outer membrane protein assembly factor BamC |
-Macromolecule #4: Outer membrane protein assembly factor BamD
Macromolecule | Name: Outer membrane protein assembly factor BamD / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Escherichia coli K-12 (bacteria) |
Molecular weight | Theoretical: 27.85835 KDa |
Recombinant expression | Organism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria) |
Sequence | String: MTRMKYLVAA ATLSLFLAGC SGSKEEVPDN PPNEIYATAQ QKLQDGNWRQ AITQLEALDN RYPFGPYSQQ VQLDLIYAYY KNADLPLAQ AAIDRFIRLN PTHPNIDYVM YMRGLTNMAL DDSALQGFFG VDRSDRDPQH ARAAFSDFSK LVRGYPNSQY T TDATKRLV ...String: MTRMKYLVAA ATLSLFLAGC SGSKEEVPDN PPNEIYATAQ QKLQDGNWRQ AITQLEALDN RYPFGPYSQQ VQLDLIYAYY KNADLPLAQ AAIDRFIRLN PTHPNIDYVM YMRGLTNMAL DDSALQGFFG VDRSDRDPQH ARAAFSDFSK LVRGYPNSQY T TDATKRLV FLKDRLAKYE YSVAEYYTER GAWVAVVNRV EGMLRDYPDT QATRDALPLM ENAYRQMQMN AQAEKVAKII AA NSSNT UniProtKB: Outer membrane protein assembly factor BamD |
-Macromolecule #5: Outer membrane protein assembly factor BamE
Macromolecule | Name: Outer membrane protein assembly factor BamE / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Escherichia coli K-12 (bacteria) |
Molecular weight | Theoretical: 13.530256 KDa |
Recombinant expression | Organism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria) |
Sequence | String: MRCKTLTAAA AVLLMLTAGC STLERVVYRP DINQGNYLTA NDVSKIRVGM TQQQVAYALG TPLMSDPFGT NTWFYVFRQQ PGHEGVTQQ TLTLTFNSSG VLTNIDNKPA LSGNGGHHHH HHHH UniProtKB: Outer membrane protein assembly factor BamE |
-Macromolecule #6: Serine protease EspP
Macromolecule | Name: Serine protease EspP / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO EC number: Hydrolases; Acting on peptide bonds (peptidases); Serine endopeptidases |
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Source (natural) | Organism: Escherichia coli O157:H7 (bacteria) |
Molecular weight | Theoretical: 38.759879 KDa |
Recombinant expression | Organism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria) |
Sequence | String: NIELVSAPKD TNENVFKASK QTIGFSDVTP VITTRETDDK ITWSLTGYNT VANKEATRNA AALFSVDYKA FLNEVNNLNK RMGDLRDIN GEAGAWCRIM SGTGSASGGF SDNYTHVQVG VDKKHELDGL DLFTGFTVTH TDSSASADVF SGKTKSVGAG L YASAMFDS ...String: NIELVSAPKD TNENVFKASK QTIGFSDVTP VITTRETDDK ITWSLTGYNT VANKEATRNA AALFSVDYKA FLNEVNNLNK RMGDLRDIN GEAGAWCRIM SGTGSASGGF SDNYTHVQVG VDKKHELDGL DLFTGFTVTH TDSSASADVF SGKTKSVGAG L YASAMFDS GAYIDLIGKY VHHDNEYTAT FAGLGTRDYS THSWYAGAEA GYRYHVTEDA WIEPQAELVY GSVSGKQFAW KD QGMHLSM KDKDYNPLIG RTGVDVGKSF SGKDWKVTAR AGLGYQFDLL ANGETVLRDA SGEKRIKGEK DSRMLMSVGL NAE IRDNVR FGLEFEKSAF GKYNVDNAVC ANFRYSF UniProtKB: Serine protease EspP |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.8 / Details: 20 mM Tris-HCl, pH 7.8, 150 mM NaCl |
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Vitrification | Cryogen name: ETHANE |
Details | BAM-EspP complex structure with BamA-G431C and G781C/EspP-N1293C and A1043C mutations in nanodisc |
-Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 7.5 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: OTHER / Imaging mode: OTHER / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.5 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
+Image processing
-Atomic model buiding 1
Initial model | PDB ID: 7yd5 Chain - Source name: PDB / Chain - Initial model type: experimental model |
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Refinement | Space: RECIPROCAL / Protocol: RIGID BODY FIT / Overall B value: 100 / Target criteria: 0.3 |
Output model | PDB-7ye4: |