9ya1

Cryo-EM structure of intraconoidal microtubule 2 (ICMT2) from Toxoplasma gondii (8-nm repeat)

Method: ELECTRON MICROSCOPY
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1. Protein Identity and Related Structures Protein Identity & Related Structures

ICMAP4, TGME49_225340

OrganismNot specified

UniProt A0A086KM91

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 96 Microtubule associated protein SPM1 × 11 (A0A7J6K285) Tubulin alpha chain × 26 (P10873) Tubulin beta chain × 26 (I7BFC9) TLAP3 (apical cap protein AC5), TGME49_235380 × 3 (A0A151H4L4) TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 4 (A0A7J6K913) TRXL1, TGME49_232410 × 22 (Q8MPF4) TRXL2, TGME49_225790 × 2 (A0A7J6K232) GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 26 GUANOSINE-5'-DIPHOSPHATE × 26 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name A0A086KM91_TOXGO
Isoform —
PDB entities 1
Chains and sequence ranges Author chain 1; PDBConstruct 1–2041; UniProt 1–2041 Author chain 2; PDBConstruct 1–2041; UniProt 1–2041

Microtubule associated protein SPM1

OrganismNot specified

UniProt A0A7J6K285

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 96 ICMAP4, TGME49_225340 × 2 (A0A086KM91) Tubulin alpha chain × 26 (P10873) Tubulin beta chain × 26 (I7BFC9) TLAP3 (apical cap protein AC5), TGME49_235380 × 3 (A0A151H4L4) TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 4 (A0A7J6K913) TRXL1, TGME49_232410 × 22 (Q8MPF4) TRXL2, TGME49_225790 × 2 (A0A7J6K232) GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 26 GUANOSINE-5'-DIPHOSPHATE × 26 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name A0A7J6K285_TOXGO
Isoform —
PDB entities 2
Chains and sequence ranges Author chain A; PDBConstruct 1–351; UniProt 1–351 Author chain B; PDBConstruct 1–351; UniProt 1–351 Author chain C; PDBConstruct 1–351; UniProt 1–351 Author chain D; PDBConstruct 1–351; UniProt 1–351 Author chain E; PDBConstruct 1–351; UniProt 1–351 Author chain F; PDBConstruct 1–351; UniProt 1–351 Author chain G; PDBConstruct 1–351; UniProt 1–351 Author chain H; PDBConstruct 1–351; UniProt 1–351 Author chain I; PDBConstruct 1–351; UniProt 1–351 Author chain J; PDBConstruct 1–351; UniProt 1–351 Author chain K; PDBConstruct 1–351; UniProt 1–351

Tubulin alpha chain

OrganismNot specified

UniProt P10873

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 96 ICMAP4, TGME49_225340 × 2 (A0A086KM91) Microtubule associated protein SPM1 × 11 (A0A7J6K285) Tubulin beta chain × 26 (I7BFC9) TLAP3 (apical cap protein AC5), TGME49_235380 × 3 (A0A151H4L4) TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 4 (A0A7J6K913) TRXL1, TGME49_232410 × 22 (Q8MPF4) TRXL2, TGME49_225790 × 2 (A0A7J6K232) GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 26 GUANOSINE-5'-DIPHOSPHATE × 26 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name TBA_TOXGO
Isoform —
PDB entities 3
Chains and sequence ranges Author chain A0; PDBConstruct 1–453; UniProt 1–453 Author chain A2; PDBConstruct 1–453; UniProt 1–453 Author chain A4; PDBConstruct 1–453; UniProt 1–453 Author chain A6; PDBConstruct 1–453; UniProt 1–453 Author chain A8; PDBConstruct 1–453; UniProt 1–453 Author chain B0; PDBConstruct 1–453; UniProt 1–453 Author chain B2; PDBConstruct 1–453; UniProt 1–453 Author chain B4; PDBConstruct 1–453; UniProt 1–453 Author chain B6; PDBConstruct 1–453; UniProt 1–453 Author chain B8; PDBConstruct 1–453; UniProt 1–453 Author chain C0; PDBConstruct 1–453; UniProt 1–453 Author chain C2; PDBConstruct 1–453; UniProt 1–453 Author chain C4; PDBConstruct 1–453; UniProt 1–453 Author chain C6; PDBConstruct 1–453; UniProt 1–453 Author chain C8; PDBConstruct 1–453; UniProt 1–453 Author chain D0; PDBConstruct 1–453; UniProt 1–453 Author chain D2; PDBConstruct 1–453; UniProt 1–453 Author chain D4; PDBConstruct 1–453; UniProt 1–453 Author chain D6; PDBConstruct 1–453; UniProt 1–453 Author chain D8; PDBConstruct 1–453; UniProt 1–453 Author chain E0; PDBConstruct 1–453; UniProt 1–453 Author chain E2; PDBConstruct 1–453; UniProt 1–453 Author chain E4; PDBConstruct 1–453; UniProt 1–453 Author chain E6; PDBConstruct 1–453; UniProt 1–453 Author chain E8; PDBConstruct 1–453; UniProt 1–453 Author chain F0; PDBConstruct 1–453; UniProt 1–453

Tubulin beta chain

OrganismNot specified

UniProt I7BFC9

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 96 ICMAP4, TGME49_225340 × 2 (A0A086KM91) Microtubule associated protein SPM1 × 11 (A0A7J6K285) Tubulin alpha chain × 26 (P10873) TLAP3 (apical cap protein AC5), TGME49_235380 × 3 (A0A151H4L4) TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 4 (A0A7J6K913) TRXL1, TGME49_232410 × 22 (Q8MPF4) TRXL2, TGME49_225790 × 2 (A0A7J6K232) GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 26 GUANOSINE-5'-DIPHOSPHATE × 26 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name I7BFC9_TOXGO
Isoform —
PDB entities 4
Chains and sequence ranges Author chain A1; PDBConstruct 1–449; UniProt 1–449 Author chain A3; PDBConstruct 1–449; UniProt 1–449 Author chain A5; PDBConstruct 1–449; UniProt 1–449 Author chain A7; PDBConstruct 1–449; UniProt 1–449 Author chain A9; PDBConstruct 1–449; UniProt 1–449 Author chain B1; PDBConstruct 1–449; UniProt 1–449 Author chain B3; PDBConstruct 1–449; UniProt 1–449 Author chain B5; PDBConstruct 1–449; UniProt 1–449 Author chain B7; PDBConstruct 1–449; UniProt 1–449 Author chain B9; PDBConstruct 1–449; UniProt 1–449 Author chain C1; PDBConstruct 1–449; UniProt 1–449 Author chain C3; PDBConstruct 1–449; UniProt 1–449 Author chain C5; PDBConstruct 1–449; UniProt 1–449 Author chain C7; PDBConstruct 1–449; UniProt 1–449 Author chain C9; PDBConstruct 1–449; UniProt 1–449 Author chain D1; PDBConstruct 1–449; UniProt 1–449 Author chain D3; PDBConstruct 1–449; UniProt 1–449 Author chain D5; PDBConstruct 1–449; UniProt 1–449 Author chain D7; PDBConstruct 1–449; UniProt 1–449 Author chain D9; PDBConstruct 1–449; UniProt 1–449 Author chain E1; PDBConstruct 1–449; UniProt 1–449 Author chain E3; PDBConstruct 1–449; UniProt 1–449 Author chain E5; PDBConstruct 1–449; UniProt 1–449 Author chain E7; PDBConstruct 1–449; UniProt 1–449 Author chain E9; PDBConstruct 1–449; UniProt 1–449 Author chain F1; PDBConstruct 1–449; UniProt 1–449

TLAP3 (apical cap protein AC5), TGME49_235380

OrganismNot specified

UniProt A0A151H4L4

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 96 ICMAP4, TGME49_225340 × 2 (A0A086KM91) Microtubule associated protein SPM1 × 11 (A0A7J6K285) Tubulin alpha chain × 26 (P10873) Tubulin beta chain × 26 (I7BFC9) TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 4 (A0A7J6K913) TRXL1, TGME49_232410 × 22 (Q8MPF4) TRXL2, TGME49_225790 × 2 (A0A7J6K232) GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 26 GUANOSINE-5'-DIPHOSPHATE × 26 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name A0A151H4L4_TOXGO
Isoform —
PDB entities 5
Chains and sequence ranges Author chain O; PDBConstruct 1–583; UniProt 1–583 Author chain P; PDBConstruct 1–583; UniProt 1–583 Author chain R; PDBConstruct 1–583; UniProt 1–583

TLAP4 (thioredoxin-like associated protein), TGME49_201760

OrganismNot specified

UniProt A0A7J6K913

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 96 ICMAP4, TGME49_225340 × 2 (A0A086KM91) Microtubule associated protein SPM1 × 11 (A0A7J6K285) Tubulin alpha chain × 26 (P10873) Tubulin beta chain × 26 (I7BFC9) TLAP3 (apical cap protein AC5), TGME49_235380 × 3 (A0A151H4L4) TRXL1, TGME49_232410 × 22 (Q8MPF4) TRXL2, TGME49_225790 × 2 (A0A7J6K232) GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 26 GUANOSINE-5'-DIPHOSPHATE × 26 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name A0A7J6K913_TOXGO
Isoform —
PDB entities 6
Chains and sequence ranges Author chain U; PDBConstruct 1–336; UniProt 1–336 Author chain V; PDBConstruct 1–336; UniProt 1–336 Author chain W; PDBConstruct 1–336; UniProt 1–336 Author chain X; PDBConstruct 1–336; UniProt 1–336

TRXL1, TGME49_232410

OrganismNot specified

UniProt Q8MPF4

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 96 ICMAP4, TGME49_225340 × 2 (A0A086KM91) Microtubule associated protein SPM1 × 11 (A0A7J6K285) Tubulin alpha chain × 26 (P10873) Tubulin beta chain × 26 (I7BFC9) TLAP3 (apical cap protein AC5), TGME49_235380 × 3 (A0A151H4L4) TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 4 (A0A7J6K913) TRXL2, TGME49_225790 × 2 (A0A7J6K232) GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 26 GUANOSINE-5'-DIPHOSPHATE × 26 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name Q8MPF4_TOXGO
Isoform —
PDB entities 7
Chains and sequence ranges Author chain a; PDBConstruct 1–220; UniProt 1–220 Author chain b; PDBConstruct 1–220; UniProt 1–220 Author chain c; PDBConstruct 1–220; UniProt 1–220 Author chain d; PDBConstruct 1–220; UniProt 1–220 Author chain e; PDBConstruct 1–220; UniProt 1–220 Author chain f; PDBConstruct 1–220; UniProt 1–220 Author chain g; PDBConstruct 1–220; UniProt 1–220 Author chain h; PDBConstruct 1–220; UniProt 1–220 Author chain i; PDBConstruct 1–220; UniProt 1–220 Author chain j; PDBConstruct 1–220; UniProt 1–220 Author chain m; PDBConstruct 1–220; UniProt 1–220 Author chain n; PDBConstruct 1–220; UniProt 1–220 Author chain o; PDBConstruct 1–220; UniProt 1–220 Author chain p; PDBConstruct 1–220; UniProt 1–220 Author chain q; PDBConstruct 1–220; UniProt 1–220 Author chain r; PDBConstruct 1–220; UniProt 1–220 Author chain s; PDBConstruct 1–220; UniProt 1–220 Author chain t; PDBConstruct 1–220; UniProt 1–220 Author chain u; PDBConstruct 1–220; UniProt 1–220 Author chain v; PDBConstruct 1–220; UniProt 1–220 Author chain w; PDBConstruct 1–220; UniProt 1–220 Author chain x; PDBConstruct 1–220; UniProt 1–220

TRXL2, TGME49_225790

OrganismNot specified

UniProt A0A7J6K232

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 96 ICMAP4, TGME49_225340 × 2 (A0A086KM91) Microtubule associated protein SPM1 × 11 (A0A7J6K285) Tubulin alpha chain × 26 (P10873) Tubulin beta chain × 26 (I7BFC9) TLAP3 (apical cap protein AC5), TGME49_235380 × 3 (A0A151H4L4) TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 4 (A0A7J6K913) TRXL1, TGME49_232410 × 22 (Q8MPF4) GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 26 GUANOSINE-5'-DIPHOSPHATE × 26 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name A0A7J6K232_TOXGO
Isoform —
PDB entities 8
Chains and sequence ranges Author chain k; PDBConstruct 1–166; UniProt 1–166 Author chain l; PDBConstruct 1–166; UniProt 1–166

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id9ya1
Deposition date deposition_date2025-09-15
Structure title titleCryo-EM structure of intraconoidal microtubule 2 (ICMT2) from Toxoplasma gondii (8-nm repeat)
Keywords keywords;Tubulin, Microtubule, Microtubule Inner Protein, Microtubule-associated Protein, Toxoplasma gondii, conoid, conoid fiber, intraconoidal microtubule, ICMT, STRUCTURAL PROTEIN ;; STRUCTURAL PROTEIN
Experimental Method methodELECTRON MICROSCOPY
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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

9ya1__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

9ya1__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 109 1010 1011 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

9ya1__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg(Guinier)0.00 Å
Rg (electron density)120.00 Å
Total Rg120.00 Å
Atom count226608
Residues28687
Excluded volume4009500 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 9ya1__assembly_1__model_1 96-meric (96) Success 4.1.3-1-20251215 (887e7ef) View Download
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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (11)

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7. Citations (1)