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- PDB-8xom: Cryo-EM structure of human ABCC4 in complex with ANP-bound in NBD... -

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Basic information

Entry
Database: PDB / ID: 8xom
TitleCryo-EM structure of human ABCC4 in complex with ANP-bound in NBD1 and METHOTREXATE
ComponentsATP-binding cassette sub-family C member 4
KeywordsTRANSPORT PROTEIN / ABC transporter MRP
Function / homology
Function and homology information


guanine nucleotide transmembrane transporter activity / 15-hydroxyprostaglandin dehydrogenase (NAD+) activity / purine nucleotide transmembrane transporter activity / cAMP transport / urate transport / ABC-type bile acid transporter activity / platelet dense granule membrane / leukotriene transport / prostaglandin transport / prostaglandin transmembrane transporter activity ...guanine nucleotide transmembrane transporter activity / 15-hydroxyprostaglandin dehydrogenase (NAD+) activity / purine nucleotide transmembrane transporter activity / cAMP transport / urate transport / ABC-type bile acid transporter activity / platelet dense granule membrane / leukotriene transport / prostaglandin transport / prostaglandin transmembrane transporter activity / glutathione transmembrane transporter activity / ABC-type glutathione-S-conjugate transporter / ABC-type glutathione S-conjugate transporter activity / urate transmembrane transporter activity / platelet degranulation / ATPase-coupled inorganic anion transmembrane transporter activity / external side of apical plasma membrane / xenobiotic transmembrane transport / export across plasma membrane / prostaglandin secretion / ABC-type xenobiotic transporter / Paracetamol ADME / bile acid and bile salt transport / ABC-type xenobiotic transporter activity / Translocases; Catalysing the translocation of other compounds; Linked to the hydrolysis of a nucleoside triphosphate / Azathioprine ADME / efflux transmembrane transporter activity / xenobiotic transmembrane transporter activity / transport across blood-brain barrier / cilium assembly / ATPase-coupled transmembrane transporter activity / ABC-type transporter activity / xenobiotic metabolic process / ABC-family proteins mediated transport / transmembrane transport / Platelet degranulation / basolateral plasma membrane / apical plasma membrane / nucleolus / Golgi apparatus / ATP hydrolysis activity / ATP binding / membrane / plasma membrane
Similarity search - Function
ATP-binding cassette sub-family C member 4 / : / 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 sub-family C member 4 / : / 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
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER / Chem-DU0 / METHOTREXATE / PALMITIC ACID / ATP-binding cassette sub-family C member 4
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.05 Å
AuthorsZhang, P.F. / Liu, Z.
Funding support China, 1items
OrganizationGrant numberCountry
Not funded China
CitationJournal: FEBS Lett / Year: 2024
Title: The ATP-bound inward-open conformation of ABCC4 reveals asymmetric ATP binding for substrate transport.
Authors: Yue Zhu / Xiaoke Xing / Fuxing Wang / Luojun Chen / Chunhui Zhong / Xiting Lu / Zhanwang Yu / Yongbo Yang / Yi Yao / Qibin Song / Suxia Han / Zheng Liu / Pingfeng Zhang /
Abstract: The multidrug resistance-associated protein (MRP) ABCC4 facilitates substrate transport across the cytoplasmic membrane, crucial for normal physiology and mediating multidrug resistance in tumor ...The multidrug resistance-associated protein (MRP) ABCC4 facilitates substrate transport across the cytoplasmic membrane, crucial for normal physiology and mediating multidrug resistance in tumor cells. Despite intensive studies on MRPs, ABCC4's transport mechanism remains incompletely understood. In this study, we unveiled an inward-open conformation with an ATP bound to degenerate NBD1. Additionally, we captured the structure with both ATP and substrate co-bound in the inward-open state. Our findings uncover the asymmetric ATP binding in ABCC4 and provide insights into substrate binding and transport mechanisms. ATP binding to NBD1 is parallel to substrate binding to ABCC4, and is a prerequisite for ATP-bound NBD2-induced global conformational changes. Our findings shed new light on targeting ABCC4 in combination with anticancer therapy.
History
DepositionJan 1, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jul 17, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: ATP-binding cassette sub-family C member 4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)158,17019
Polymers149,6941
Non-polymers8,47618
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 1 types, 1 molecules A

#1: Protein ATP-binding cassette sub-family C member 4 / MRP/cMOAT-related ABC transporter / Multi-specific organic anion transporter B / MOAT-B / Multidrug ...MRP/cMOAT-related ABC transporter / Multi-specific organic anion transporter B / MOAT-B / Multidrug resistance-associated protein 4


Mass: 149693.922 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ABCC4
Production host: Mammalian expression vector Flag-MCS-pcDNA3.1 (others)
References: UniProt: O15439, ABC-type xenobiotic transporter, ABC-type glutathione-S-conjugate transporter

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Non-polymers , 5 types, 18 molecules

#2: Chemical ChemComp-ANP / PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER


Mass: 506.196 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H17N6O12P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: AMP-PNP, energy-carrying molecule analogue*YM
#3: Chemical ChemComp-MTX / METHOTREXATE


Mass: 454.439 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C20H22N8O5 / Feature type: SUBJECT OF INVESTIGATION / Comment: chemotherapy*YM
#4: Chemical
ChemComp-DU0 / 2-[2-[(1~{S},2~{S},4~{S},5'~{R},6~{R},7~{S},8~{R},9~{S},12~{S},13~{R},16~{S})-5',7,9,13-tetramethylspiro[5-oxapentacyclo[10.8.0.0^{2,9}.0^{4,8}.0^{13,18}]icos-18-ene-6,2'-oxane]-16-yl]oxyethyl]propane-1,3-diol


Mass: 516.752 Da / Num. of mol.: 14 / Source method: obtained synthetically / Formula: C32H52O5
#5: Chemical ChemComp-PLM / PALMITIC ACID


Mass: 256.424 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C16H32O2
#6: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg

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Details

Has ligand of interestY

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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: human ABCC4 in complex with ANP-bound in NBD1 and MTX / Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 0.1495 MDa / Experimental value: YES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Mammalian expression vector Flag-MCS-pcDNA3.1 (others)
Buffer solutionpH: 7.5
Details: 50 mM HEPES pH 7.5, 150 mM NaCl, 2 mM DTT, 2 mM MgCl2, 0.005% (w/v) GDN and 0.0005% CHS
Buffer componentConc.: 25 mM / Name: Hepes
SpecimenConc.: 10 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: The human ABCC4 protein was purified in 0.005% (w/v) GDN and 0.0005% CHS, the peak protein fraction from gel filtration column were concentrated to about 10 mg/ml.
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K
Details: After incubation on the grids at 277K under 100% humidity for 10 s, the grids were bloted for 3.0 s and then plunged frozen into liquid ethane cooled by liquid nitrogen using a Vitrobot.

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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 / Nominal defocus max: 1800 nm / Nominal defocus min: 1100 nm
Image recordingElectron dose: 55 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: SerialEM / Category: image acquisition
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 5036677
3D reconstructionResolution: 3.05 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1283813 / Symmetry type: POINT
Atomic model buildingSpace: REAL
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 195.99 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.006910428
ELECTRON MICROSCOPYf_angle_d1.548414268
ELECTRON MICROSCOPYf_chiral_restr0.07481696
ELECTRON MICROSCOPYf_plane_restr0.00841654
ELECTRON MICROSCOPYf_dihedral_angle_d10.96341484

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