+Open data
-Basic information
Entry | Database: PDB / ID: 6u1y | ||||||
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Title | bcs1 AAA domain | ||||||
Components | Mitochondrial chaperone BCS1 | ||||||
Keywords | HYDROLASE / bcs1 / AAA ATPase | ||||||
Function / homology | Function and homology information mitochondrial protein-transporting ATPase activity / protein insertion into mitochondrial inner membrane from matrix / mitochondrial cytochrome c oxidase assembly / mitochondrial respiratory chain complex III assembly / mitochondrial respiratory chain complex I assembly / mitochondrial inner membrane / ATP hydrolysis activity / mitochondrion / ATP binding Similarity search - Function | ||||||
Biological species | Mus musculus (house mouse) | ||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.17 Å | ||||||
Authors | Tang, W.K. / Xia, D. | ||||||
Funding support | United States, 1items
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Citation | Journal: Nat Struct Mol Biol / Year: 2020 Title: Structures of AAA protein translocase Bcs1 suggest translocation mechanism of a folded protein. Authors: Wai Kwan Tang / Mario J Borgnia / Allen L Hsu / Lothar Esser / Tara Fox / Natalia de Val / Di Xia / Abstract: The mitochondrial membrane-bound AAA protein Bcs1 translocate substrates across the mitochondrial inner membrane without previous unfolding. One substrate of Bcs1 is the iron-sulfur protein (ISP), a ...The mitochondrial membrane-bound AAA protein Bcs1 translocate substrates across the mitochondrial inner membrane without previous unfolding. One substrate of Bcs1 is the iron-sulfur protein (ISP), a subunit of the respiratory Complex III. How Bcs1 translocates ISP across the membrane is unknown. Here we report structures of mouse Bcs1 in two different conformations, representing three nucleotide states. The apo and ADP-bound structures reveal a homo-heptamer and show a large putative substrate-binding cavity accessible to the matrix space. ATP binding drives a contraction of the cavity by concerted motion of the ATPase domains, which could push substrate across the membrane. Our findings shed light on the potential mechanism of translocating folded proteins across a membrane, offer insights into the assembly process of Complex III and allow mapping of human disease-associated mutations onto the Bcs1 structure. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 6u1y.cif.gz | 1.3 MB | Display | PDBx/mmCIF format |
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PDB format | pdb6u1y.ent.gz | 1.1 MB | Display | PDB format |
PDBx/mmJSON format | 6u1y.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6u1y_validation.pdf.gz | 2.5 MB | Display | wwPDB validaton report |
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Full document | 6u1y_full_validation.pdf.gz | 2.5 MB | Display | |
Data in XML | 6u1y_validation.xml.gz | 84.9 KB | Display | |
Data in CIF | 6u1y_validation.cif.gz | 122.2 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/u1/6u1y ftp://data.pdbj.org/pub/pdb/validation_reports/u1/6u1y | HTTPS FTP |
-Related structure data
-Links
-Assembly
Deposited unit |
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Unit cell |
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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments: Component-ID: _ / End auth comp-ID: HIS / End label comp-ID: HIS / Refine code: _
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