[English] 日本語
Yorodumi
- PDB-7phq: Structure of homo-dimeric Staphylococcus capitis divalent metal i... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 7phq
TitleStructure of homo-dimeric Staphylococcus capitis divalent metal ion transporter (DMT) by NabFab-fiducial assisted cryo-EM
Components
  • Anti-Fab nanobody
  • DMT-Nb16_4
  • Divalent metal cation transporter MntH
  • NabFab HC
  • NabFab LC
KeywordsMEMBRANE PROTEIN / NabFab / Anti-nanobody Fab / Fiducial / DMT
Function / homologyNRAMP family / Natural resistance-associated macrophage protein-like / cadmium ion transmembrane transporter activity / manganese ion transmembrane transporter activity / iron ion transmembrane transport / symporter activity / metal ion binding / plasma membrane / Divalent metal cation transporter MntH
Function and homology information
Biological speciessynthetic construct (others)
Staphylococcus capitis (bacteria)
Lama glama (llama)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 8.45 Å
AuthorsBloch, J.S. / Mukherjee, S. / Kowal, J. / Kossiakoff, A.A. / Locher, K.P.
Funding support Switzerland, 1items
OrganizationGrant numberCountry
Swiss National Science Foundation Switzerland
Citation
Journal: Proc Natl Acad Sci U S A / Year: 2021
Title: Development of a universal nanobody-binding Fab module for fiducial-assisted cryo-EM studies of membrane proteins.
Authors: Joël S Bloch / Somnath Mukherjee / Julia Kowal / Ekaterina V Filippova / Martina Niederer / Els Pardon / Jan Steyaert / Anthony A Kossiakoff / Kaspar P Locher /
Abstract: With conformation-specific nanobodies being used for a wide range of structural, biochemical, and cell biological applications, there is a demand for antigen-binding fragments (Fabs) that ...With conformation-specific nanobodies being used for a wide range of structural, biochemical, and cell biological applications, there is a demand for antigen-binding fragments (Fabs) that specifically and tightly bind these nanobodies without disturbing the nanobody-target protein interaction. Here, we describe the development of a synthetic Fab (termed NabFab) that binds the scaffold of an alpaca-derived nanobody with picomolar affinity. We demonstrate that upon complementary-determining region grafting onto this parent nanobody scaffold, nanobodies recognizing diverse target proteins and derived from llama or camel can cross-react with NabFab without loss of affinity. Using NabFab as a fiducial and size enhancer (50 kDa), we determined the high-resolution cryogenic electron microscopy (cryo-EM) structures of nanobody-bound VcNorM and ScaDMT, both small membrane proteins of ∼50 kDa. Using an additional anti-Fab nanobody further facilitated reliable initial three-dimensional structure determination from small cryo-EM test datasets. Given that NabFab is of synthetic origin, is humanized, and can be conveniently expressed in in large amounts, it may be useful not only for structural biology but also for biomedical applications.
#1: Journal: Biorxiv / Year: 2021
Title: Development of a universal nanobody-binding Fab module for fiducial-assisted cryo-EM studies of membrane proteins
Authors: Bloch, J.S. / Mukherjee, S. / Kowal, J. / Filippova, E.V. / Niederer, M. / Pardon, E. / Steyaert, J. / Kossiakoff, A.A. / Locher, K.P.
History
DepositionAug 18, 2021Deposition site: PDBE / Processing site: PDBE
Revision 1.0Sep 1, 2021Provider: repository / Type: Initial release
Revision 1.1Dec 1, 2021Group: Database references / Category: citation / citation_author
Revision 1.2Nov 20, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / citation / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _citation.journal_id_ISSN / _em_admin.last_update

-
Structure visualization

Movie
  • Deposited structure unit
  • Imaged by Jmol
  • Download
  • Simplified surface model + fitted atomic model
  • EMDB-13426
  • Imaged by Jmol
  • Download
  • Superimposition on EM map
  • EMDB-13426
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
H: NabFab HC
L: NabFab LC
B: Divalent metal cation transporter MntH
N: DMT-Nb16_4
K: Anti-Fab nanobody
A: NabFab HC
C: NabFab LC
D: Divalent metal cation transporter MntH
E: DMT-Nb16_4
F: Anti-Fab nanobody


Theoretical massNumber of molelcules
Total (without water)247,48210
Polymers247,48210
Non-polymers00
Water57632
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area16520 Å2
ΔGint-77 kcal/mol
Surface area96270 Å2

-
Components

-
Antibody , 4 types, 8 molecules HALCNEKF

#1: Antibody NabFab HC


Mass: 25684.463 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)
#2: Antibody NabFab LC


Mass: 23258.783 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)
#4: Antibody DMT-Nb16_4


Mass: 14352.809 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)
#5: Antibody Anti-Fab nanobody


Mass: 13390.644 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Lama glama (llama) / Production host: Escherichia coli (E. coli)

-
Protein / Non-polymers , 2 types, 34 molecules BD

#3: Protein Divalent metal cation transporter MntH


Mass: 47054.531 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Staphylococcus capitis (bacteria) / Gene: mntH, NCTC11045_01736 / Production host: Escherichia coli (E. coli) / References: UniProt: A0A4U9TNH6
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 32 / Source method: isolated from a natural source / Formula: H2O

-
Details

Has protein modificationY

-
Experimental details

-
Experiment

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

-
Sample preparation

ComponentName: Complex of Staphylococcus capitis divalent metal ion transporter (DMT), chimeric nanobody DMTNb16_4, NabFab, and anti-Fab nanobody
Type: COMPLEX / Details: Rigid body docked structure / Entity ID: #1-#5 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: synthetic construct (others)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE-PROPANE

-
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: SPOT SCAN
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 26 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

-
Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 8.45 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 34100 / Symmetry type: POINT

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more