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- PDB-6psy: Cryo-EM structure of S. cerevisiae Drs2p-Cdc50p in the autoinhibi... -

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Basic information

Entry
Database: PDB / ID: 6psy
TitleCryo-EM structure of S. cerevisiae Drs2p-Cdc50p in the autoinhibited apo form
Components
  • Cell division control protein 50
  • Probable phospholipid-transporting ATPase DRS2
KeywordsTRANSLOCASE / complex / phospholipid flippase / P-type ATPase
Function / homology
Function and homology information


Cdc50p-Drs2p complex / actin cortical patch localization / aminophospholipid translocation / Ion transport by P-type ATPases / phosphatidylcholine flippase activity / post-Golgi vesicle-mediated transport / phosphatidylserine flippase activity / phospholipid-translocating ATPase complex / ATPase-coupled intramembrane lipid transporter activity / phosphatidylserine floppase activity ...Cdc50p-Drs2p complex / actin cortical patch localization / aminophospholipid translocation / Ion transport by P-type ATPases / phosphatidylcholine flippase activity / post-Golgi vesicle-mediated transport / phosphatidylserine flippase activity / phospholipid-translocating ATPase complex / ATPase-coupled intramembrane lipid transporter activity / phosphatidylserine floppase activity / phosphatidylethanolamine flippase activity / P-type phospholipid transporter / endocytic recycling / retrograde transport, endosome to Golgi / phosphatidylinositol-4-phosphate binding / phospholipid translocation / Neutrophil degranulation / intracellular protein transport / trans-Golgi network / endocytosis / late endosome membrane / endosome membrane / Golgi apparatus / magnesium ion binding / endoplasmic reticulum / ATP hydrolysis activity / ATP binding / plasma membrane / cytosol
Similarity search - Function
CDC50/LEM3 family / LEM3 (ligand-effect modulator 3) family / CDC50 family / P-type ATPase, subfamily IV / P-type ATPase, C-terminal / P-type ATPase, N-terminal / Phospholipid-translocating ATPase N-terminal / Phospholipid-translocating P-type ATPase C-terminal / Cation transport ATPase (P-type) / P-type ATPase, haloacid dehalogenase domain / P-type ATPase, phosphorylation site ...CDC50/LEM3 family / LEM3 (ligand-effect modulator 3) family / CDC50 family / P-type ATPase, subfamily IV / P-type ATPase, C-terminal / P-type ATPase, N-terminal / Phospholipid-translocating ATPase N-terminal / Phospholipid-translocating P-type ATPase C-terminal / Cation transport ATPase (P-type) / P-type ATPase, haloacid dehalogenase domain / P-type ATPase, phosphorylation site / P-type ATPase, cytoplasmic domain N / E1-E2 ATPases phosphorylation site. / P-type ATPase, A domain superfamily / P-type ATPase / P-type ATPase, transmembrane domain superfamily / HAD superfamily / HAD-like superfamily
Similarity search - Domain/homology
Phospholipid-transporting ATPase accessory subunit CDC50 / Phospholipid-transporting ATPase DRS2
Similarity search - Component
Biological speciesSaccharomyces cerevisiae W303 (yeast)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsBai, L. / Li, H.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI)R01-CA231466 United States
CitationJournal: Nat Commun / Year: 2019
Title: Autoinhibition and activation mechanisms of the eukaryotic lipid flippase Drs2p-Cdc50p.
Authors: Lin Bai / Amanda Kovach / Qinglong You / Hao-Chi Hsu / Gongpu Zhao / Huilin Li /
Abstract: The heterodimeric eukaryotic Drs2p-Cdc50p complex is a lipid flippase that maintains cell membrane asymmetry. The enzyme complex exists in an autoinhibited form in the absence of an activator and is ...The heterodimeric eukaryotic Drs2p-Cdc50p complex is a lipid flippase that maintains cell membrane asymmetry. The enzyme complex exists in an autoinhibited form in the absence of an activator and is specifically activated by phosphatidylinositol-4-phosphate (PI4P), although the underlying mechanisms have been unclear. Here we report the cryo-EM structures of intact Drs2p-Cdc50p isolated from S. cerevisiae in apo form and in the PI4P-activated form at 2.8 Å and 3.3 Å resolution, respectively. The structures reveal that the Drs2p C-terminus lines a long groove in the cytosolic regulatory region to inhibit the flippase activity. PIP4 binding in a cytosol-proximal membrane region triggers a 90° rotation of a cytosolic helix switch that is located just upstream of the inhibitory C-terminal peptide. The rotation of the helix switch dislodges the C-terminus from the regulatory region, activating the flippase.
History
DepositionJul 14, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 25, 2019Provider: repository / Type: Initial release
Revision 1.1Dec 4, 2019Group: Author supporting evidence / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 2.0Jul 29, 2020Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.auth_asym_id / _atom_site.auth_seq_id ..._atom_site.auth_asym_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_entity_id / _chem_comp.name / _chem_comp.type / _pdbx_entity_nonpoly.entity_id / _pdbx_entity_nonpoly.name / _pdbx_struct_assembly_gen.asym_id_list / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation

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Structure visualization

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Assembly

Deposited unit
A: Probable phospholipid-transporting ATPase DRS2
E: Cell division control protein 50
hetero molecules


Theoretical massNumber of molelcules
Total (without water)199,8335
Polymers198,9662
Non-polymers8673
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area9380 Å2
ΔGint-33 kcal/mol
Surface area56740 Å2

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Components

#1: Protein Probable phospholipid-transporting ATPase DRS2


Mass: 153928.719 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae W303 (yeast) / Strain: W303 / Gene: DRS2, YAL026C, FUN38 / Production host: Saccharomyces cerevisiae W303 (yeast)
References: UniProt: P39524, P-type phospholipid transporter
#2: Protein Cell division control protein 50 / Cdc50p


Mass: 45037.312 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae W303 (yeast) / Strain: W303 / Gene: CDC50, YCR094W, YCR94W / Production host: Saccharomyces cerevisiae W303 (yeast) / References: UniProt: P25656
#3: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Mass: 424.401 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#4: Sugar ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
Has ligand of interestN

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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: Drs2p-Cdc50p complex / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Saccharomyces cerevisiae W303 (yeast)
Source (recombinant)Organism: Saccharomyces cerevisiae W303 (yeast)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: unspecified
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 2 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.11.1_2575: / Classification: refinement
EM software
IDNameVersionCategory
2SerialEMimage acquisition
4CTFFIND4.1CTF correction
7UCSF Chimeramodel fitting
9PHENIXmodel refinement
10Cootmodel refinement
12RELION3final Euler assignment
13RELION3classification
14Coot3D reconstruction
15UCSF Chimera3D reconstruction
CTF correctionType: NONE
Particle selectionNum. of particles selected: 1040625
3D reconstructionResolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 635300 / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00711807
ELECTRON MICROSCOPYf_angle_d1.06216003
ELECTRON MICROSCOPYf_dihedral_angle_d12.287023
ELECTRON MICROSCOPYf_chiral_restr0.0621811
ELECTRON MICROSCOPYf_plane_restr0.0072013

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