[English] 日本語
Yorodumi
- EMDB-23828: Structure of human TRPML1 with ML-SI3 -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: EMDB / ID: EMD-23828
TitleStructure of human TRPML1 with ML-SI3
Map dataStructure of human TRPML1 with ML-SI3
Sample
  • Complex: TRPML1 complex with ML-SI3
    • Protein or peptide: Mucolipin-1
  • Ligand: N-{(1S,2S)-2-[4-(2-methoxyphenyl)piperazin-1-yl]cyclohexyl}benzenesulfonamide
  • Ligand: 1,2-Distearoyl-sn-glycerophosphoethanolamine
KeywordsTRPML / Calcium / ML-SI3 / MEMBRANE PROTEIN
Function / homology
Function and homology information


calcium ion export / positive regulation of lysosome organization / intracellularly phosphatidylinositol-3,5-bisphosphate-gated monatomic cation channel activity / phagosome maturation / NAADP-sensitive calcium-release channel activity / iron ion transmembrane transporter activity / transferrin transport / iron ion transmembrane transport / Transferrin endocytosis and recycling / cellular response to pH ...calcium ion export / positive regulation of lysosome organization / intracellularly phosphatidylinositol-3,5-bisphosphate-gated monatomic cation channel activity / phagosome maturation / NAADP-sensitive calcium-release channel activity / iron ion transmembrane transporter activity / transferrin transport / iron ion transmembrane transport / Transferrin endocytosis and recycling / cellular response to pH / monoatomic anion channel activity / ligand-gated calcium channel activity / TRP channels / sodium channel activity / monoatomic cation transport / phagocytic cup / potassium channel activity / autophagosome maturation / monoatomic cation channel activity / release of sequestered calcium ion into cytosol / cellular response to calcium ion / cell projection / calcium ion transmembrane transport / calcium channel activity / phagocytic vesicle membrane / late endosome / late endosome membrane / protein homotetramerization / adaptive immune response / lysosome / receptor complex / endosome membrane / lysosomal membrane / intracellular membrane-bounded organelle / lipid binding / Golgi apparatus / nucleoplasm / identical protein binding / membrane / plasma membrane
Similarity search - Function
: / Mucolipin / : / Mucolipin, extracytosolic domain / Polycystin cation channel, PKD1/PKD2 / Polycystin cation channel
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsSchmiege P / Li X
CitationJournal: Structure / Year: 2021
Title: Atomic insights into ML-SI3 mediated human TRPML1 inhibition.
Authors: Philip Schmiege / Michael Fine / Xiaochun Li /
Abstract: Transient receptor potential mucolipin 1 (TRPML1) regulates lysosomal calcium signaling, lipid trafficking, and autophagy-related processes. This channel is regulated by phosphoinositides and the low ...Transient receptor potential mucolipin 1 (TRPML1) regulates lysosomal calcium signaling, lipid trafficking, and autophagy-related processes. This channel is regulated by phosphoinositides and the low pH environment of the lysosome, maintaining calcium levels essential for proper lysosomal function. Recently, several small molecules specifically targeting the TRPML family have been demonstrated to modulate channel activity. One of these, a synthetic antagonist ML-SI3, can prevent lysosomal calcium efflux and has been reported to block downstream TRPML1-mediated induction of autophagy. Here, we report a cryo-electron microscopy structure of human TRPML1 with ML-SI3 at 2.9-Å resolution. ML-SI3 binds to the hydrophobic cavity created by S5, S6, and PH1, the same cavity where the synthetic agonist ML-SA1 binds. Electrophysiological characterizations show that ML-SI3 can compete with ML-SA1, blocking channel activation yet does not inhibit PI(3,5)P-dependent activation of the channel. Consequently, this work provides molecular insight into how ML-SI3 and native lipids regulate TRPML1 activity.
History
DepositionApr 12, 2021-
Header (metadata) releaseJun 16, 2021-
Map releaseJun 16, 2021-
UpdateOct 16, 2024-
Current statusOct 16, 2024Processing site: RCSB / Status: Released

-
Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.014
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by cylindrical radius
  • Surface level: 0.014
  • Imaged by UCSF Chimera
  • Download
  • Surface view with fitted model
  • Atomic models: PDB-7mgl
  • Surface level: 0.014
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_23828.png

Downloads & links

-
Map

FileDownload / File: emd_23828.map.gz / Format: CCP4 / Size: 163.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationStructure of human TRPML1 with ML-SI3
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.66 Å/pix.
x 350 pix.
= 231. Å		0.66 Å/pix.
x 350 pix.
= 231. Å		0.66 Å/pix.
x 350 pix.
= 231. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.66 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.011 / Movie #1: 0.014
Minimum - Maximum-0.06465807 - 0.113241866
Average (Standard dev.)0.00003551257 (±0.0037019697)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions350350350
Spacing350350350
CellA=B=C: 231.00002 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.660.660.66
M x/y/z350350350
origin x/y/z0.0000.0000.000
length x/y/z231.000231.000231.000
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ380380380
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS350350350
D min/max/mean-0.0650.1130.000

-
Supplemental data

-
Sample components

-
Entire : TRPML1 complex with ML-SI3

EntireName: TRPML1 complex with ML-SI3
Components
  • Complex: TRPML1 complex with ML-SI3
    • Protein or peptide: Mucolipin-1
  • Ligand: N-{(1S,2S)-2-[4-(2-methoxyphenyl)piperazin-1-yl]cyclohexyl}benzenesulfonamide
  • Ligand: 1,2-Distearoyl-sn-glycerophosphoethanolamine

-
Supramolecule #1: TRPML1 complex with ML-SI3

SupramoleculeName: TRPML1 complex with ML-SI3 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Homo sapiens (human)

-
Macromolecule #1: Mucolipin-1

MacromoleculeName: Mucolipin-1 / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 65.084996 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MTAPAGPRGS ETERLLTPNP GYGTQAGPSP APPTPPEEED LRRRLKYFFM SPCDKFRAKG RKPCKLMLQV VKILVVTVQL ILFGLSNQL AVTFREENTI AFRHLFLLGY SDGADDTFAA YTREQLYQAI FHAVDQYLAL PDVSLGRYAY VRGGGDPWTN G SGLALCQR ...String:
MTAPAGPRGS ETERLLTPNP GYGTQAGPSP APPTPPEEED LRRRLKYFFM SPCDKFRAKG RKPCKLMLQV VKILVVTVQL ILFGLSNQL AVTFREENTI AFRHLFLLGY SDGADDTFAA YTREQLYQAI FHAVDQYLAL PDVSLGRYAY VRGGGDPWTN G SGLALCQR YYHRGHVDPA NDTFDIDPMV VTDCIQVDPP ERPPPPPSDD LTLLESSSSY KNLTLKFHKL VNVTIHFRLK TI NLQSLIN NEIPDCYTFS VLITFDNKAH SGRIPISLET QAHIQECKHP SVFQHGDNSF RLLFDVVVIL TCSLSFLLCA RSL LRGFLL QNEFVGFMWR QRGRVISLWE RLEFVNGWYI LLVTSDVLTI SGTIMKIGIE AKNLASYDVC SILLGTSTLL VWVG VIRYL TFFHNYNILI ATLRVALPSV MRFCCCVAVI YLGYCFCGWI VLGPYHVKFR SLSMVSECLF SLINGDDMFV TFAAM QAQQ GRSSLVWLFS QLYLYSFISL FIYMVLSLFI ALITGAYDTI KHPGGAGAEE SELQAYIAQC QDSPTSGKFR RGSGSA CSL LCCCGRDPSE EHSLLVN

UniProtKB: Mucolipin-1

-
Macromolecule #2: N-{(1S,2S)-2-[4-(2-methoxyphenyl)piperazin-1-yl]cyclohexyl}benzen...

MacromoleculeName: N-{(1S,2S)-2-[4-(2-methoxyphenyl)piperazin-1-yl]cyclohexyl}benzenesulfonamide
type: ligand / ID: 2 / Number of copies: 4 / Formula: ZB4
Molecular weightTheoretical: 429.576 Da
Chemical component information

ChemComp-ZB4:
N-{(1S,2S)-2-[4-(2-methoxyphenyl)piperazin-1-yl]cyclohexyl}benzenesulfonamide / channel blocker, antagonist*YM

-
Macromolecule #3: 1,2-Distearoyl-sn-glycerophosphoethanolamine

MacromoleculeName: 1,2-Distearoyl-sn-glycerophosphoethanolamine / type: ligand / ID: 3 / Number of copies: 4 / Formula: 3PE
Molecular weightTheoretical: 748.065 Da
Chemical component information

ChemComp-3PE:
1,2-Distearoyl-sn-glycerophosphoethanolamine / phospholipid*YM

-
Experimental details

-
Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

-
Sample preparation

BufferpH: 4.5
VitrificationCryogen name: ETHANE

-
Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: DARK FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

-
Image processing

Startup modelType of model: EMDB MAP
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 508465
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION

+
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