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- PDB-9unl: Cryo-EM structure of the human prohibitin complex -

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Basic information

Entry
Database: PDB / ID: 9unl
TitleCryo-EM structure of the human prohibitin complex
Components
  • Prohibitin 1
  • Prohibitin-2
KeywordsMEMBRANE PROTEIN / prohibitin
Function / homology
Function and homology information


complement component C3a binding / mitochondrial prohibitin complex / regulation of cardiolipin metabolic process / regulation of cytochrome-c oxidase activity / amide binding / host-mediated perturbation of viral RNA genome replication / proteinase activated receptor binding / regulation of branching involved in mammary gland duct morphogenesis / negative regulation of nuclear receptor-mediated glucocorticoid signaling pathway / negative regulation of mammary gland epithelial cell proliferation ...complement component C3a binding / mitochondrial prohibitin complex / regulation of cardiolipin metabolic process / regulation of cytochrome-c oxidase activity / amide binding / host-mediated perturbation of viral RNA genome replication / proteinase activated receptor binding / regulation of branching involved in mammary gland duct morphogenesis / negative regulation of nuclear receptor-mediated glucocorticoid signaling pathway / negative regulation of mammary gland epithelial cell proliferation / sphingolipid binding / Processing of SMDT1 / Cellular response to mitochondrial stress / T-helper 17 type immune response / RIG-I signaling pathway / positive regulation of complement activation / complement component C3b binding / mammary gland branching involved in thelarche / negative regulation of intracellular estrogen receptor signaling pathway / negative regulation of androgen receptor signaling pathway / negative regulation of transcription by competitive promoter binding / positive regulation of G protein-coupled receptor signaling pathway / cellular response to interleukin-6 / sister chromatid cohesion / mammary gland epithelial cell proliferation / DNA biosynthetic process / positive regulation of immunoglobulin production / positive regulation of interleukin-17 production / B cell activation / progesterone receptor signaling pathway / mammary gland alveolus development / positive regulation of DNA-binding transcription factor activity / negative regulation of DNA-binding transcription factor activity / mitophagy / estrogen receptor signaling pathway / antiviral innate immune response / positive regulation of smooth muscle cell proliferation / epigenetic regulation of gene expression / nuclear estrogen receptor binding / cell periphery / mitochondrion organization / RAF activation / positive regulation of non-canonical NF-kappaB signal transduction / negative regulation of cell growth / negative regulation of protein catabolic process / negative regulation of ERK1 and ERK2 cascade / histone deacetylase binding / nuclear matrix / protein import into nucleus / Signaling by moderate kinase activity BRAF mutants / Paradoxical activation of RAF signaling by kinase inactive BRAF / Signaling downstream of RAS mutants / osteoblast differentiation / transcription corepressor activity / cell migration / positive regulation of neuron apoptotic process / regulation of apoptotic process / mitochondrial outer membrane / early endosome / positive regulation of ERK1 and ERK2 cascade / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / mitochondrial inner membrane / protein stabilization / protein heterodimerization activity / negative regulation of cell population proliferation / negative regulation of DNA-templated transcription / positive regulation of gene expression / regulation of DNA-templated transcription / symbiont entry into host cell / negative regulation of apoptotic process / positive regulation of DNA-templated transcription / enzyme binding / cell surface / negative regulation of transcription by RNA polymerase II / signal transduction / protein homodimerization activity / protein-containing complex / mitochondrion / extracellular exosome / nucleoplasm / identical protein binding / nucleus / membrane / plasma membrane / cytoplasm
Similarity search - Function
Prohibitin / Band 7 domain / SPFH domain / Band 7 family / prohibitin homologues / Band 7/SPFH domain superfamily
Similarity search - Domain/homology
Prohibitin 1 / Prohibitin-2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsHong, S.X. / Guan, Z.Y. / Wang, Q. / Yin, P.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: To Be Published
Title: Cryo-EM structure of the human prohibitin complex
Authors: Hong, S.X. / Guan, Z.Y. / Wang, Q. / Yin, P.
History
DepositionApr 23, 2025Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Sep 10, 2025Provider: repository / Type: Initial release
Revision 1.0Sep 10, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Sep 10, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Sep 10, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Sep 10, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Sep 10, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Sep 17, 2025Group: Data collection / Database references / Structure summary
Category: audit_author / citation ...audit_author / citation / citation_author / em_admin / em_author_list / struct
Item: _citation.title / _em_admin.last_update ..._citation.title / _em_admin.last_update / _em_admin.title / _struct.title
Revision 2.0Sep 17, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Database references / Experimental summary
Data content type: EM metadata / EM metadata ...EM metadata / EM metadata / EM metadata / EM metadata
Category: citation / citation_author ...citation / citation_author / em_admin / em_author_list
Data content type: EM metadata / EM metadata / EM metadata
Item: _citation.title / _em_admin.last_update / _em_admin.title

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
E: Prohibitin 1
C: Prohibitin 1
A: Prohibitin 1
U: Prohibitin 1
S: Prohibitin 1
Q: Prohibitin 1
O: Prohibitin 1
M: Prohibitin 1
K: Prohibitin 1
I: Prohibitin 1
G: Prohibitin 1
F: Prohibitin-2
D: Prohibitin-2
B: Prohibitin-2
V: Prohibitin-2
T: Prohibitin-2
R: Prohibitin-2
P: Prohibitin-2
N: Prohibitin-2
L: Prohibitin-2
J: Prohibitin-2
H: Prohibitin-2


Theoretical massNumber of molelcules
Total (without water)727,54422
Polymers727,54422
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
Prohibitin 1


Mass: 32798.984 Da / Num. of mol.: 11
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PHB1, PHB / Production host: Homo sapiens (human) / References: UniProt: P35232
#2: Protein
Prohibitin-2 / B-cell receptor-associated protein BAP37 / D-prohibitin / Repressor of estrogen receptor activity


Mass: 33341.355 Da / Num. of mol.: 11
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PHB2, BAP, REA / Production host: Homo sapiens neanderthalensis (Neandertal) / References: UniProt: Q99623
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: PHB complex / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenConc.: 10 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1200 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.21.1_5286 / Category: model refinement
CTF correctionType: NONE
3D reconstructionResolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 268512 / Symmetry type: POINT
RefinementHighest resolution: 2.8 Å
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00528948
ELECTRON MICROSCOPYf_angle_d0.88839046
ELECTRON MICROSCOPYf_dihedral_angle_d11.46111040
ELECTRON MICROSCOPYf_chiral_restr0.0474551
ELECTRON MICROSCOPYf_plane_restr0.0075118

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