9Y9Z image
Deposition Date 2025-09-15
Release Date 2025-12-03
Last Version Date 2025-12-24
Entry Detail
PDB ID:
9Y9Z
Keywords:
STRUCTURAL PROTEIN
Title:
Cryo-EM structure of conoid fiber from Toxoplasma gondii (24-nm repeat)
Biological Source:
Source Organism(s):
Toxoplasma gondii (Taxon ID: 5811)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
3.14 Å
Aggregation State:
FILAMENT
Reconstruction Method:
SINGLE PARTICLE
9Y9Z validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CF1, TGME49_222350
Gene (Uniprot):TGME49_222350
Chain IDs:BA (auth: 10), CA (auth: 11), DA (auth: 12), EA (auth: 13), FA (auth: 14), GA (auth: 15), HA (auth: 16), UB (auth: 3), RC (auth: 4), OD (auth: 5), NE (auth: 6), MF (auth: 7), IG (auth: 8), EH (auth: 9)
Chain Length:410
Number of Molecules:14
Biological Source:Toxoplasma gondii
UniProt ID:S8GJP0
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Tubulin alpha chain
Chain IDs:IA (auth: 1A), KA (auth: 1C), MA (auth: 1E), OA (auth: 1G), QA (auth: 1I), SA (auth: 1K), UA (auth: 1M), HB (auth: 2A), JB (auth: 2C), LB (auth: 2E), NB (auth: 2G), PB (auth: 2I), RB (auth: 2K), TB (auth: 2M), EC (auth: 3A), GC (auth: 3C), IC (auth: 3E), KC (auth: 3G), MC (auth: 3I), OC (auth: 3K), QC (auth: 3M), BD (auth: 4A), DD (auth: 4C), FD (auth: 4E), HD (auth: 4G), JD (auth: 4I), LD (auth: 4K), ND (auth: 4M), ZD (auth: 5A), BE (auth: 5C), DE (auth: 5E), FE (auth: 5G), HE (auth: 5I), JE (auth: 5K), LE (auth: 5M), YE (auth: 6A), AF (auth: 6C), CF (auth: 6E), EF (auth: 6G), GF (auth: 6I), IF (auth: 6K), KF (auth: 6M), VF (auth: 7A), XF (auth: 7C), ZF (auth: 7E), BG (auth: 7G), DG (auth: 7I), FG (auth: 7K), HG (auth: 7M), RG (auth: 8A), TG (auth: 8C), VG (auth: 8E), XG (auth: 8G), ZG (auth: 8I), BH (auth: 8K), DH (auth: 8M), NH (auth: 9A), PH (auth: 9C), RH (auth: 9E), TH (auth: 9G), VH (auth: 9I), XH (auth: 9K), ZH (auth: 9M)
Chain Length:453
Number of Molecules:63
Biological Source:Toxoplasma gondii
UniProt ID:P10873 Pfam ID:PF00091, PF03953
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Tubulin beta chain
Gene (Uniprot):BTUB
Chain IDs:JA (auth: 1B), LA (auth: 1D), NA (auth: 1F), PA (auth: 1H), RA (auth: 1J), TA (auth: 1L), VA (auth: 1N), IB (auth: 2B), KB (auth: 2D), MB (auth: 2F), OB (auth: 2H), QB (auth: 2J), SB (auth: 2L), FC (auth: 3B), HC (auth: 3D), JC (auth: 3F), LC (auth: 3H), NC (auth: 3J), PC (auth: 3L), CD (auth: 4B), ED (auth: 4D), GD (auth: 4F), ID (auth: 4H), KD (auth: 4J), MD (auth: 4L), AE (auth: 5B), CE (auth: 5D), EE (auth: 5F), GE (auth: 5H), IE (auth: 5J), KE (auth: 5L), ME (auth: 5N), ZE (auth: 6B), BF (auth: 6D), DF (auth: 6F), FF (auth: 6H), HF (auth: 6J), JF (auth: 6L), LF (auth: 6N), WF (auth: 7B), YF (auth: 7D), AG (auth: 7F), CG (auth: 7H), EG (auth: 7J), GG (auth: 7L), SG (auth: 8B), UG (auth: 8D), WG (auth: 8F), YG (auth: 8H), AH (auth: 8J), CH (auth: 8L), OH (auth: 9B), QH (auth: 9D), SH (auth: 9F), UH (auth: 9H), WH (auth: 9J), YH (auth: 9L)
Chain Length:449
Number of Molecules:57
Biological Source:Toxoplasma gondii
UniProt ID:I7BFC9 Pfam ID:PF00091, PF03953
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Spindle assembly abnormal protein 6 N-terminal domain-containing protein
Gene (Uniprot):TGRH88_009570
Chain IDs:XA (auth: 20), YA (auth: 21), ZA (auth: 22), AB (auth: 23), BB (auth: 24), CB (auth: 25), DB (auth: 26), EB (auth: 27), FB (auth: 28), GB (auth: 29), VB (auth: 30), WB (auth: 31), XB (auth: 32), YB (auth: 33), ZB (auth: 35), AC (auth: 36), BC (auth: 37), CC (auth: 38), DC (auth: 39), SC (auth: 40), TC (auth: 42), UC (auth: 43), VC (auth: 44), WC (auth: 45), XC (auth: 46), YC (auth: 47), ZC (auth: 48), AD (auth: 49), PD (auth: 50), QD (auth: 51), RD (auth: 52), SD (auth: 53), TD (auth: 54), UD (auth: 55), VD (auth: 56), WD (auth: 57), XD (auth: 58), YD (auth: 59), OE (auth: 60), PE (auth: 61), QE (auth: 62)
Chain Length:263
Number of Molecules:41
Biological Source:Toxoplasma gondii
UniProt ID:A0A7J6KDX1 Pfam ID:PF16531
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CIP3, TGME49_225020
Gene (Uniprot):TGME49_225020
Chain IDs:RE (auth: 63), SE (auth: 64), TE (auth: 65), UE (auth: 66), VE (auth: 67), WE (auth: 68), XE (auth: 69)
Chain Length:1010
Number of Molecules:7
Biological Source:Toxoplasma gondii
UniProt ID:S8G5Q1
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CF6, TGME49_245640
Gene (Uniprot):TGDOM2_245640
Chain IDs:NF (auth: 71), OF (auth: 72), PF (auth: 73), QF (auth: 75), RF (auth: 76), SF (auth: 77), TF (auth: 78), UF (auth: 79), JG (auth: 80), KG (auth: 82), LG (auth: 83), MG (auth: 84), NG (auth: 85), OG (auth: 86), PG (auth: 87), QG (auth: 89), FH (auth: 90), GH (auth: 91), HH (auth: 92), IH (auth: 93), JH (auth: 94), KH (auth: 95), LH (auth: 96), MH (auth: 97)
Chain Length:416
Number of Molecules:24
Biological Source:Toxoplasma gondii
UniProt ID:A0A086KRX4
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CF2, TGME49_258090
Gene (Uniprot):TGME49_258090
Chain IDs:A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, AA (auth: 1), WA (auth: 2), OM (auth: a), PM (auth: b), QM (auth: c), RM (auth: d), SM (auth: e), TM (auth: f), UM (auth: g), VM (auth: h), WM (auth: i), XM (auth: j), YM (auth: k), ZM (auth: l), AN (auth: m), BN (auth: n), CN (auth: o), DN (auth: p), EN (auth: q), FN (auth: r), GN (auth: s), HN (auth: t), IN (auth: u), JN (auth: v), KN (auth: w), LN (auth: x), MN (auth: y), NN (auth: z)
Chain Length:954
Number of Molecules:54
Biological Source:Toxoplasma gondii
UniProt ID:S8GBZ2
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CF4, TGME49_246720
Gene (Uniprot):TGDOM2_246720
Chain IDs:AI (auth: A1), BI (auth: A2), CI (auth: A3), DI (auth: A4), EI (auth: A5), FI (auth: A6), GI (auth: A7), HI (auth: A8), II (auth: A9)
Chain Length:502
Number of Molecules:9
Biological Source:Toxoplasma gondii
UniProt ID:A0A086KR31
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CF3, TGME49_255895
Gene (Uniprot):TGME49_255895
Chain IDs:JI (auth: B1), KI (auth: B2), LI (auth: B3), MI (auth: B4), NI (auth: B5), OI (auth: B6), PI (auth: B7)
Chain Length:556
Number of Molecules:7
Biological Source:Toxoplasma gondii
UniProt ID:S8F3E8
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CPH1, TGME49_266630
Gene (Uniprot):TGRH88_011380
Chain IDs:QI (auth: C0), WI (auth: C6), XI (auth: C7), YI (auth: C8), ZI (auth: C9), AJ (auth: D0), BJ (auth: D1), CJ (auth: D2), DJ (auth: D3), EJ (auth: D4), FJ (auth: D5), GJ (auth: D6), HJ (auth: D7), IJ (auth: D8), JJ (auth: D9), KJ (auth: E0), LJ (auth: E1), MJ (auth: E2), NJ (auth: E3), OJ (auth: E4), PJ (auth: E5), QJ (auth: E6), RJ (auth: E7), SJ (auth: E8), TJ (auth: E9), VJ (auth: F1), WJ (auth: F2), XJ (auth: F3)
Chain Length:582
Number of Molecules:28
Biological Source:Toxoplasma gondii
UniProt ID:A0A7J6KB56
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Microtubule associated protein SPM1
Gene (Uniprot):TGRH88_067480
Chain IDs:RI (auth: C1), SI (auth: C2), TI (auth: C3), UI (auth: C4), VI (auth: C5)
Chain Length:351
Number of Molecules:5
Biological Source:Toxoplasma gondii
UniProt ID:A0A7J6K285
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:PRP, TGME49_291880
Gene (Uniprot):TGPRC2_291880
Chain IDs:UJ (auth: F0), YJ (auth: F5), ZJ (auth: F6), AK (auth: F7), BK (auth: F8), CK (auth: F9), DK (auth: G0), EK (auth: G1), FK (auth: G2), GK (auth: G3), HK (auth: G4), IK (auth: G5), JK (auth: G6), KK (auth: G7), LK (auth: G8), MK (auth: G9), NK (auth: H0), OK (auth: H1), PK (auth: H2), QK (auth: H3), RK (auth: H4), SK (auth: H5), TK (auth: H6), UK (auth: H7), VK (auth: H8), WK (auth: H9), XK (auth: I1), YK (auth: I2), ZK (auth: I3), AL (auth: I4), BL (auth: I5), CL (auth: I6), DL (auth: I7), EL (auth: I8), FL (auth: I9)
Chain Length:783
Number of Molecules:35
Biological Source:Toxoplasma gondii
UniProt ID:A0A151HK62
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CF5, TGME49_297180
Gene (Uniprot):TGME49_297180
Chain IDs:GL (auth: J1), HL (auth: J2), IL (auth: J3), JL (auth: J4), KL (auth: J5), LL (auth: J6), ML (auth: J7)
Chain Length:871
Number of Molecules:7
Biological Source:Toxoplasma gondii
UniProt ID:S8FEB8
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DCX, TGME49_256030
Gene (Uniprot):DCX
Chain IDs:NL (auth: K0), OL (auth: K1), PL (auth: K2), QL (auth: K3), RL (auth: K4), SL (auth: K5), TL (auth: K6), UL (auth: K7), VL (auth: K8), WL (auth: K9), XL (auth: L0), YL (auth: L1), ZL (auth: L2), AM (auth: L3), BM (auth: L4), CM (auth: L5), DM (auth: L6), EM (auth: L7), FM (auth: L8), GM (auth: L9), HM (auth: M1), IM (auth: M2), JM (auth: M3), KM (auth: M4), LM (auth: M5), MM (auth: M6), NM (auth: M7)
Chain Length:256
Number of Molecules:27
Biological Source:Toxoplasma gondii
UniProt ID:B6KAS6 Pfam ID:PF05517, PF03607
Ligand Molecules
GDP
GTP
MG
Primary Citation
Atomic models of the Toxoplasma cell invasion machinery.
Nat.Struct.Mol.Biol. ? ? ? (2025)
PMID: 41366525 DOI: 10.1038/s41594-025-01728-w

Abstact

Apicomplexan parasites, responsible for toxoplasmosis, cryptosporidiosis and malaria, invade host cells through a unique gliding motility mechanism powered by actomyosin motors and a dynamic organelle called the conoid. Here, using cryo-electron microscopy, we determined structures of four essential complexes of the Toxoplasma gondii conoid: the preconoidal P2 ring, tubulin-based conoid fibers, and the subpellicular and intraconoidal microtubules. Our analysis identified 40 distinct conoid proteins, several of which are essential for parasite lytic growth, as revealed through genetic disruption studies. Comparative analysis of the tubulin-containing complexes sheds light on their functional specialization by microtubule-associated proteins, while the structure of the preconoidal ring pinpoints the site of actin polymerization and initial translocation, enhancing our mechanistic understanding of gliding motility and, therefore, parasite invasion.

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Primary Citation of related structures
9Y9Z
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