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- EMDB-29511: CryoEM structure of Human ABCB6 Transporter -

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Basic information

Entry
Database: EMDB / ID: EMD-29511
TitleCryoEM structure of Human ABCB6 Transporter
Map data
Sample
  • Complex: Two chains make the complex
    • Protein or peptide: ATP-binding cassette sub-family B member 6
Function / homology
Function and homology information


cellular detoxification of cadmium ion / Defective ABCB6 causes MCOPCB7 / heme transmembrane transport / Mitochondrial ABC transporters / tetrapyrrole metabolic process / ABC-type heme transporter / ABC-type heme transporter activity / porphyrin-containing compound metabolic process / tetrapyrrole binding / heme transport ...cellular detoxification of cadmium ion / Defective ABCB6 causes MCOPCB7 / heme transmembrane transport / Mitochondrial ABC transporters / tetrapyrrole metabolic process / ABC-type heme transporter / ABC-type heme transporter activity / porphyrin-containing compound metabolic process / tetrapyrrole binding / heme transport / heme metabolic process / porphyrin-containing compound biosynthetic process / melanosome assembly / melanosome membrane / multivesicular body membrane / mitochondrial envelope / endolysosome membrane / vacuolar membrane / skin development / efflux transmembrane transporter activity / intracellular copper ion homeostasis / ABC-type transporter activity / ATP-binding cassette (ABC) transporter complex / brain development / transmembrane transport / early endosome membrane / intracellular iron ion homeostasis / mitochondrial outer membrane / endosome / lysosomal membrane / Golgi membrane / heme binding / endoplasmic reticulum membrane / Golgi apparatus / endoplasmic reticulum / ATP hydrolysis activity / mitochondrion / extracellular exosome / nucleoplasm / ATP binding / plasma membrane / cytosol
Similarity search - Function
Mitochondrial ABC-transporter, N-terminal five TM domain / Mitochondrial ABC-transporter N-terminal five TM region / Type 1 protein exporter / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter ...Mitochondrial ABC-transporter, N-terminal five TM domain / Mitochondrial ABC-transporter N-terminal five TM region / Type 1 protein exporter / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
ATP-binding cassette sub-family B member 6
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.5 Å
AuthorsShaik MM / Myasnikov A
Funding support1 items
OrganizationGrant numberCountry
Not funded
CitationJournal: To Be Published
Title: CryoEM structure of Human ABCB6 Transporter
Authors: Shaik MM / Myasnikov A
History
DepositionJan 22, 2023-
Header (metadata) releaseFeb 8, 2023-
Map releaseFeb 8, 2023-
UpdateFeb 8, 2023-
Current statusFeb 8, 2023Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_29511.png

Downloads & links

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Map

FileDownload / File: emd_29511.map.gz / Format: CCP4 / Size: 91.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.08 Å
Density
Contour LevelBy AUTHOR: 1.0
Minimum - Maximum-1.3644162 - 2.7335339
Average (Standard dev.)0.005453707 (±0.07848466)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions288288288
Spacing288288288
CellA=B=C: 311.04 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_29511_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_29511_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_29511_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Two chains make the complex

EntireName: Two chains make the complex
Components
  • Complex: Two chains make the complex
    • Protein or peptide: ATP-binding cassette sub-family B member 6

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Supramolecule #1: Two chains make the complex

SupramoleculeName: Two chains make the complex / type: complex / ID: 1 / Chimera: Yes / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 170 KDa

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Macromolecule #1: ATP-binding cassette sub-family B member 6

MacromoleculeName: ATP-binding cassette sub-family B member 6 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO / EC number: ABC-type heme transporter
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 94.971133 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MVTVGNYCEA EGPVGPAWMQ DGLSPCFFFT LVPSTRMALG TLALVLALPC RRRERPAGAD SLSWGAGPRI SPYVLQLLLA TLQAALPLA GLAGRVGTAR GAPLPSYLLL ASVLESLAGA CGLWLLVVER SQARQRLAMG IWIKFRHSPG LLLLWTVAFA A ENLALVSW ...String:
MVTVGNYCEA EGPVGPAWMQ DGLSPCFFFT LVPSTRMALG TLALVLALPC RRRERPAGAD SLSWGAGPRI SPYVLQLLLA TLQAALPLA GLAGRVGTAR GAPLPSYLLL ASVLESLAGA CGLWLLVVER SQARQRLAMG IWIKFRHSPG LLLLWTVAFA A ENLALVSW NSPQWWWARA DLGQQVQFSL WVLRYVVSGG LFVLGLWAPG LRPQSYTLQV HEEDQDVERS QVRSAAQQST WR DFGRKLR LLSGYLWPRG SPALQLVVLI CLGLMGLERA LNVLVPIFYR NIVNLLTEKA PWNSLAWTVT SYVFLKFLQG GGT GSTGFV SNLRTFLWIR VQQFTSRRVE LLIFSHLHEL SLRWHLGRRT GEVLRIADRG TSSVTGLLSY LVFNVIPTLA DIII GIIYF SMFFNAWFGL IVFLCMSLYL TLTIVVTEWR TKFRRAMNTQ ENATRARAVD SLLNFETVKY YNAESYEVER YREAI IKYQ GLEWKSSASL VLLNQTQNLV IGLGLLAGSL LCAYFVTEQK LQVGDYVLFG TYIIQLYMPL NWFGTYYRMI QTNFID MEN MFDLLKEETE VKDLPGAGPL RFQKGRIEFE NVHFSYADGR ETLQDVSFTV MPGQTLALVG PSGAGKSTIL RLLFRFY DI SSGCIRIDGQ DISQVTQASL RSHIGVVPQD TVLFNDTIAD NIRYGRVTAG NDEVEAAAQA AGIHDAIMAF PEGYRTQV G ERGLKLSGGE KQRVAIARTI LKAPGIILLD EATSALDTSN ERAIQASLAK VCANRTTIVV AHRLSTVVNA DQILVIKDG CIVERGRHEA LLSRGGVYAD MWQLQQGQEE TSEDTKPQTM ERDYKDDDDK

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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

Concentration3.6 mg/mL
BufferpH: 8
Component:
ConcentrationFormulaName
30.0 mMC4H11NO3Tris
150.0 mMNaClSodium chlorideSodium Chloride
0.03 percentC24H46O11DDM
GridModel: C-flat-1.2/1.3 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Support film - Film thickness: 1.0 nm / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec.
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 283 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 100.0 µm / Calibrated defocus max: 5.0 µm / Calibrated defocus min: 1.2 µm / Calibrated magnification: 61200 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.0 mm / Nominal defocus max: 5.0 µm / Nominal defocus min: 1.2 µm / Nominal magnification: 60000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Number grids imaged: 1 / Number real images: 5133 / Average exposure time: 6.0 sec. / Average electron dose: 77.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 900000
Startup modelType of model: INSILICO MODEL / In silico model: MODEL BUILD USING ITASSER SERVER
Initial angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: cryoSPARC (ver. 9.03)
Final 3D classificationNumber classes: 4 / Avg.num./class: 60000 / Software - Name: cryoSPARC (ver. 9.03)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 9.03)
Final reconstructionNumber classes used: 1 / Applied symmetry - Point group: C2 (2 fold cyclic) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 9.03) / Number images used: 58000
FSC plot (resolution estimation)

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Atomic model buiding 1

RefinementSpace: REAL / Protocol: RIGID BODY FIT / Overall B value: 200 / Target criteria: cross-correlation coefficient
Output model

PDB-8fwk:
CryoEM structure of Human ABCB6 Transporter

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