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- EMDB-22282: CryoEM structure of human presequence protease in partial close s... -

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Basic information

Entry
Database: EMDB / ID: EMD-22282
TitleCryoEM structure of human presequence protease in partial close state 2, induced by presequence of citrate synthase
Map data
Sample
  • Complex: CryoEM map of Human Presequence Protease in partial close state 2, induced by presequence of citrate synthase
    • Protein or peptide: Presequence protease, mitochondrial
KeywordsPartial open state / HYDROLASE
Function / homology
Function and homology information


Mitochondrial protein import / Hydrolases; Acting on peptide bonds (peptidases); Metalloendopeptidases / protein targeting to mitochondrion / enzyme activator activity / protein processing / metalloendopeptidase activity / metallopeptidase activity / mitochondrial matrix / mitochondrion / proteolysis / zinc ion binding
Similarity search - Function
: / Peptidase M16C associated / Peptidase M16C associated / PreP C-terminal domain / Peptidase M16C associated / Peptidase M16, C-terminal / Peptidase M16 inactive domain / Peptidase M16, N-terminal / Insulinase (Peptidase family M16) / Metalloenzyme, LuxS/M16 peptidase-like
Similarity search - Domain/homology
Presequence protease, mitochondrial
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.6 Å
AuthorsLiang WG / Tang W
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute on Aging (NIH/NIA)R01 GM121964 United States
CitationJournal: To Be Published
Title: CryoEM structure of human presequence protease in partial open state 2, induced by presequence of citrate synthase
Authors: Liang WG / Zhao M / Tang W
History
DepositionJul 7, 2020-
Header (metadata) releaseJul 7, 2021-
Map releaseJul 7, 2021-
UpdateJun 4, 2025-
Current statusJun 4, 2025Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.023
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by radius
  • Surface level: 0.023
  • Imaged by UCSF Chimera
  • Download
  • Surface view with fitted model
  • Atomic models: PDB-6xow
  • Surface level: 0.023
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_22282.png

Downloads & links

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Map

FileDownload / File: emd_22282.map.gz / Format: CCP4 / Size: 3.4 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.71 Å/pix.
x 96 pix.
= 164.16 Å		1.71 Å/pix.
x 96 pix.
= 164.16 Å		1.71 Å/pix.
x 96 pix.
= 164.16 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.71 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy EMDB: 0.02 / Movie #1: 0.023
Minimum - Maximum-0.025454102 - 0.080106154
Average (Standard dev.)0.00008111927 (±0.0057773916)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions969696
Spacing969696
CellA=B=C: 164.16 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.711.711.71
M x/y/z969696
origin x/y/z0.0000.0000.000
length x/y/z164.160164.160164.160
α/β/γ90.00090.00090.000
start NX/NY/NZ192139186
NX/NY/NZ211274246
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS969696
D min/max/mean-0.0250.0800.000

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Supplemental data

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Mask #1

Fileemd_22282_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: #1

Fileemd_22282_additional_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_22282_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_22282_half_map_2.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : CryoEM map of Human Presequence Protease in partial close state 2...

EntireName: CryoEM map of Human Presequence Protease in partial close state 2, induced by presequence of citrate synthase
Components
  • Complex: CryoEM map of Human Presequence Protease in partial close state 2, induced by presequence of citrate synthase
    • Protein or peptide: Presequence protease, mitochondrial

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Supramolecule #1: CryoEM map of Human Presequence Protease in partial close state 2...

SupramoleculeName: CryoEM map of Human Presequence Protease in partial close state 2, induced by presequence of citrate synthase
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Presequence protease, mitochondrial

MacromoleculeName: Presequence protease, mitochondrial / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
EC number: Hydrolases; Acting on peptide bonds (peptidases); Metalloendopeptidases
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 114.901461 KDa
Recombinant expressionOrganism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria)
SequenceString: MHHHHHHAAA CERALQYKLG DKIHGFTVNQ VTSVPELFLT AVKLTHDDTG ARYLHLARED TNNLFSVQFR TTPMDSTGVP HILEHTVLC GSQKYPCRDP FFKMLNRSLS TFMNAFTASD YTLYPFSTQN PKDFQNLLSV YLDATFFPCL RELDFWQEGW R LEHENPSD ...String:
MHHHHHHAAA CERALQYKLG DKIHGFTVNQ VTSVPELFLT AVKLTHDDTG ARYLHLARED TNNLFSVQFR TTPMDSTGVP HILEHTVLC GSQKYPCRDP FFKMLNRSLS TFMNAFTASD YTLYPFSTQN PKDFQNLLSV YLDATFFPCL RELDFWQEGW R LEHENPSD PQTPLVFKGV VFNEMKGAFT DNERIFSQHL QNRLLPDHTY SVVSGGDPLC IPELTWEQLK QFHATHYHPS NA RFFTYGN FPLEQHLKQI HEEALSKFQK IEPSTVVPAQ TPWDKPREFQ ITCGPDSFAT DPSKQTTVSV SFLLPDITDT FEA FTLSLL SSLLTSGPNS PFYKALIESG LGTDFSPDVG YNGYTREAYF SVGLQGIVEK DIETVRSLID RTIDEVVEKG FEDD RIEAL LHKIEIQMKH QSTSFGLMLT SYIASCWNHD GDPVELLKLG NQLAKFRQCL QENPKFLQEK VKQYFKNNQH KLTLS MRPD DKYHEKQAQV EATKLKQKVE ALSPGDRQQI YEKGLELRSQ QSKPQDASCL PALKVSDIEP TIPVTELDVV LTAGDI PVQ YCAQPTNGMV YFRAFSSLNT LPEELRPYVP LFCSVLTKLG CGLLDYREQA QQIELKTGGM SASPHVLPDD SHMDTYE QG VLFSSLCLDR NLPDMMQLWS EIFNNPCFEE EEHFKVLVKM TAQELANGIP DSGHLYASIR AGRTLTPAGD LQETFSGM D QVRLMKRIAE MTDIKPILRK LPRIKKHLLN GDNMRCSVNA TPQQMPQTEK AVEDFLRSIG RSKKERRPVR PHTVEKPVP SSSGGDAHVP HGSQVIRKLV MEPTFKPWQM KTHFLMPFPV NYVGECIRTV PYTDPDHASL KILARLMTAK FLHTEIREKG GAYGGGAKL SHNGIFTLYS YRDPNTIETL QSFGKAVDWA KSGKFTQQDI DEAKLSVFST VDAPVAPSDK GMDHFLYGLS D EMKQAHRE QLFAVSHDKL LAVSDRYLGT GKSTHGLAIL GPENPKIAKD PSWIIR

UniProtKB: Presequence protease, mitochondrial

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration2 mg/mL
BufferpH: 7.7
Details: 20 mM Tris, pH 7.7, 150 mM NaCl, 10mM KCl, 20 mM EDTA and 1 mM 2-mercaptoethanol
GridDetails: unspecified
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 308 K / Instrument: SPOTITON

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average exposure time: 6.0 sec. / Average electron dose: 66.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.5 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: CTFFIND / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.6 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 330536
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION
FSC plot (resolution estimation)

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