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- EMDB-10141: The structure of human thyroglobulin -

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Basic information

Entry
Database: EMDB / ID: EMD-10141
TitleThe structure of human thyroglobulin
Map data
Sample
  • Complex: human thyroglobulin
    • Protein or peptide: Thyroglobulin
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
KeywordsThyroglobulin / Thyroid / thyroid hormones / Tri-iodo-thyronine / Thyroxine / HORMONE
Function / homology
Function and homology information


hormone biosynthetic process / iodide transport / thyroid hormone generation / regulation of myelination / thyroid gland development / hormone activity / signal transduction / extracellular space / extracellular region / identical protein binding
Similarity search - Function
Thyroglobulin / : / Thyroglobulin type-1 repeat signature. / Thyroglobulin type-1 / Thyroglobulin type-1 superfamily / Thyroglobulin type-1 repeat / Thyroglobulin type-1 domain profile. / Thyroglobulin type I repeats. / Tyrosine-protein kinase ephrin type A/B receptor-like / Tyrosine-protein kinase ephrin type A/B receptor-like ...Thyroglobulin / : / Thyroglobulin type-1 repeat signature. / Thyroglobulin type-1 / Thyroglobulin type-1 superfamily / Thyroglobulin type-1 repeat / Thyroglobulin type-1 domain profile. / Thyroglobulin type I repeats. / Tyrosine-protein kinase ephrin type A/B receptor-like / Tyrosine-protein kinase ephrin type A/B receptor-like / Putative ephrin-receptor like / Carboxylesterase type B, conserved site / Carboxylesterases type-B signature 2. / Carboxylesterase, type B / Carboxylesterase family / Alpha/Beta hydrolase fold
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.6 Å
AuthorsCoscia F / Lowe J
Funding support United Kingdom, 2 items
OrganizationGrant numberCountry
Medical Research Council (United Kingdom)U105184326 to JL United Kingdom
Wellcome Trust202754/Z/16/Z to JL United Kingdom
CitationJournal: Nature / Year: 2020
Title: The structure of human thyroglobulin.
Authors: Francesca Coscia / Ajda Taler-Verčič / Veronica T Chang / Ludwig Sinn / Francis J O'Reilly / Thierry Izoré / Miha Renko / Imre Berger / Juri Rappsilber / Dušan Turk / Jan Löwe /
Abstract: Thyroglobulin (TG) is the protein precursor of thyroid hormones, which are essential for growth, development and the control of metabolism in vertebrates. Hormone synthesis from TG occurs in the ...Thyroglobulin (TG) is the protein precursor of thyroid hormones, which are essential for growth, development and the control of metabolism in vertebrates. Hormone synthesis from TG occurs in the thyroid gland via the iodination and coupling of pairs of tyrosines, and is completed by TG proteolysis. Tyrosine proximity within TG is thought to enable the coupling reaction but hormonogenic tyrosines have not been clearly identified, and the lack of a three-dimensional structure of TG has prevented mechanistic understanding. Here we present the structure of full-length human thyroglobulin at a resolution of approximately 3.5 Å, determined by cryo-electron microscopy. We identified all of the hormonogenic tyrosine pairs in the structure, and verified them using site-directed mutagenesis and in vitro hormone-production assays using human TG expressed in HEK293T cells. Our analysis revealed that the proximity, flexibility and solvent exposure of the tyrosines are the key characteristics of hormonogenic sites. We transferred the reaction sites from TG to an engineered tyrosine donor-acceptor pair in the unrelated bacterial maltose-binding protein (MBP), which yielded hormone production with an efficiency comparable to that of TG. Our study provides a framework to further understand the production and regulation of thyroid hormones.
History
DepositionJul 24, 2019-
Header (metadata) releaseJul 31, 2019-
Map releaseFeb 12, 2020-
UpdateOct 23, 2024-
Current statusOct 23, 2024Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.02
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.02
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6scj
  • Surface level: 0.02
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_10141.png

Downloads & links

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Map

FileDownload / File: emd_10141.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.04 Å/pix.
x 400 pix.
= 417.2 Å		1.04 Å/pix.
x 400 pix.
= 417.2 Å		1.04 Å/pix.
x 400 pix.
= 417.2 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.043 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.02 / Movie #1: 0.02
Minimum - Maximum-0.09003922 - 0.1956845
Average (Standard dev.)0.00023077495 (±0.00327456)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 417.19998 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0431.0431.043
M x/y/z400400400
origin x/y/z0.0000.0000.000
length x/y/z417.200417.200417.200
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS400400400
D min/max/mean-0.0900.1960.000

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Supplemental data

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Additional map: #1

Fileemd_10141_additional_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: #2

Fileemd_10141_additional_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 : human thyroglobulin

EntireName: human thyroglobulin
Components
  • Complex: human thyroglobulin
    • Protein or peptide: Thyroglobulin
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: human thyroglobulin

SupramoleculeName: human thyroglobulin / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1 / Details: dimeric
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 660 KDa

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Macromolecule #1: Thyroglobulin

MacromoleculeName: Thyroglobulin / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 305.069844 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MALVLEIFTL LASICWVSAN IFEYQVDAQP LRPCELQRET AFLKQADYVP QCAEDGSFQT VQCQNDGRSC WCVGANGSEV LGSRQPGRP VACLSFCQLQ KQQILLSGYI NSTDTSYLPQ CQDSGDYAPV QCDVQQVQCW CVDAEGMEVY GTRQLGRPKR C PRSCEIRN ...String:
MALVLEIFTL LASICWVSAN IFEYQVDAQP LRPCELQRET AFLKQADYVP QCAEDGSFQT VQCQNDGRSC WCVGANGSEV LGSRQPGRP VACLSFCQLQ KQQILLSGYI NSTDTSYLPQ CQDSGDYAPV QCDVQQVQCW CVDAEGMEVY GTRQLGRPKR C PRSCEIRN RRLLHGVGDK SPPQCSAEGE FMPVQCKFVN TTDMMIFDLV HSYNRFPDAF VTFSSFQRRF PEVSGYCHCA DS QGRELAE TGLELLLDEI YDTIFAGLDL PSTFTETTLY RILQRRFLAV QSVISGRFRC PTKCEVERFT ATSFGHPYVP SCR RNGDYQ AVQCQTEGPC WCVDAQGKEM HGTRQQGEPP SCAEGQSCAS ERQQALSRLY FGTSGYFSQH DLFSSPEKRW ASPR VARFA TSCPPTIKEL FVDSGLLRPM VEGQSQQFSV SENLLKEAIR AIFPSRGLAR LALQFTTNPK RLQQNLFGGK FLVNV GQFN LSGALGTRGT FNFSQFFQQL GLASFLNGGR QEDLAKPLSV GLDSNSSTGT PEAAKKDGTM NKPTVGSFGF EINLQE NQN ALKFLASLLE LPEFLLFLQH AISVPEDVAR DLGDVMETVL SSQTCEQTPE RLFVPSCTTE GSYEDVQCFS GECWCVN SW GKELPGSRVR GGQPRCPTDC EKQRARMQSL MGSQPAGSTL FVPACTSEGH FLPVQCFNSE CYCVDAEGQA IPGTRSAI G KPKKCPTPCQ LQSEQAFLRT VQALLSNSSM LPTLSDTYIP QCSTDGQWRQ VQCNGPPEQV FELYQRWEAQ NKGQDLTPA KLLVKIMSYR EAASGNFSLF IQSLYEAGQQ DVFPVLSQYP SLQDVPLAAL EGKRPQPREN ILLEPYLFWQ ILNGQLSQYP GSYSDFSTP LAHFDLRNCW CVDEAGQELE GMRSEPSKLP TCPGSCEEAK LRVLQFIRET EEIVSASNSS RFPLGESFLV A KGIRLRNE DLGLPPLFPP REAFAEQFLR GSDYAIRLAA QSTLSFYQRR RFSPDDSAGA SALLRSGPYM PQCDAFGSWE PV QCHAGTG HCWCVDEKGG FIPGSLTARS LQIPQCPTTC EKSRTSGLLS SWKQARSQEN PSPKDLFVPA CLETGEYARL QAS GAGTWC VDPASGEELR PGSSSSAQCP SLCNVLKSGV LSRRVSPGYV PACRAEDGGF SPVQCDQAQG SCWCVMDSGE EVPG TRVTG GQPACESPRC PLPFNASEVV GGTILCETIS GPTGSAMQQC QLLCRQGSWS VFPPGPLICS LESGRWESQL PQPRA CQRP QLWQTIQTQG HFQLQLPPGK MCSADYADLL QTFQVFILDE LTARGFCQIQ VKTFGTLVSI PVCNNSSVQV GCLTRE RLG VNVTWKSRLE DIPVASLPDL HDIERALVGK DLLGRFTDLI QSGSFQLHLD SKTFPAETIR FLQGDHFGTS PRTWFGC SE GFYQVLTSEA SQDGLGCVKC PEGSYSQDEE CIPCPVGFYQ EQAGSLACVP CPVGRTTISA GAFSQTHCVT DCQRNEAG L QCDQNGQYRA SQKDRGSGKA FCVDGEGRRL PWWETEAPLE DSQCLMMQKF EKVPESKVIF DANAPVAVRS KVPDSEFPV MQCLTDCTED EACSFFTVST TEPEISCDFY AWTSDNVACM TSDQKRDALG NSKATSFGSL RCQVKVRSHG QDSPAVYLKK GQGSTTTLQ KRFEPTGFQN MLSGLYNPIV FSASGANLTD AHLFCLLACD RDLCCDGFVL TQVQGGAIIC GLLSSPSVLL C NVKDWMDP SEAWANATCP GVTYDQESHQ VILRLGDQEF IKSLTPLEGT QDTFTNFQQV YLWKDSDMGS RPESMGCRKD TV PRPASPT EAGLTTELFS PVDLNQVIVN GNQSLSSQKH WLFKHLFSAQ QANLWCLSRC VQEHSFCQLA EITESASLYF TCT LYPEAQ VCDDIMESNA QGCRLILPQM PKALFRKKVI LEDKVKNFYT RLPFQKLMGI SIRNKVPMSE KSISNGFFEC ERRC DADPC CTGFGFLNVS QLKGGEVTCL TLNSLGIQMC SEENGGAWRI LDCGSPDIEV HTYPFGWYQK PIAQNNAPSF CPLVV LPSL TEKVSLDSWQ SLALSSVVVD PSIRHFDVAH VSTAATSNFS AVRDLCLSEC SQHEACLITT LQTQPGAVRC MFYADT QSC THSLQGQNCR LLLREEATHI YRKPGISLLS YEASVPSVPI STHGRLLGRS QAIQVGTSWK QVDQFLGVPY AAPPLAE RR FQAPEPLNWT GSWDASKPRA SCWQPGTRTS TSPGVSEDCL YLNVFIPQNV APNASVLVFF HNTMDREESE GWPAIDGS F LAAVGNLIVV TASYRVGVFG FLSSGSGEVS GNWGLLDQVA ALTWVQTHIR GFGGDPRRVS LAADRGGADV ASIHLLTAR ATNSQLFRRA VLMGGSALSP AAVISHERAQ QQAIALAKEV SCPMSSSQEV VSCLRQKPAN VLNDAQTKLL AVSGPFHYWG PVIDGHFLR EPPARALKRS LWVEVDLLIG SSQDDGLINR AKAVKQFEES RGRTSSKTAF YQALQNSLGG EDSDARVEAA A TWYYSLEH STDDYASFSR ALENATRDYF IICPIIDMAS AWAKRARGNV FMYHAPENYG HGSLELLADV QFALGLPFYP AY EGQFSLE EKSLSLKIMQ YFSHFIRSGN PNYPYEFSRK VPTFATPWPD FVPRAGGENY KEFSELLPNR QGLKKADCSF WSK YISSLK TSADGAKGGQ SAESEEEELT AGSGLREDLL SLQEPGSKTY SK

UniProtKB: Thyroglobulin

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Macromolecule #3: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 3 / Number of copies: 30 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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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

Concentration0.05 mg/mL
BufferpH: 8 / Details: TRIS 0.05M, 0.2M NaCl pH 8
VitrificationCryogen name: ETHANE / Instrument: FEI VITROBOT MARK III

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 40.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: INSILICO MODEL
Final reconstructionApplied symmetry - Point group: C2 (2 fold cyclic) / Resolution.type: BY AUTHOR / Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 151601
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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