9ya3

Cryo-EM structure of the apical region of subpellicular microtubule (SPMT) from Toxoplasma gondii (8-nm repeat)

Method: ELECTRON MICROSCOPY

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Microtubule associated protein SPM1

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 108	TLAP3 (apical cap protein AC5), TGME49_235380 × 3 （A0A151H4L4） Tubulin alpha chain × 26 （P10873） Tubulin beta chain × 26 （I7BFC9） TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 3 （A0A7J6K913） TLAP2 (thioredoxin-like associated protein), TGME49_232130 × 4 （A0A125YLA3） TRXL1, TGME49_232410 × 22 （Q8MPF4） TRXL2, TGME49_225790 × 2 （A0A7J6K232） GUANOSINE-5'-DIPHOSPHATE × 26 GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 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	1
Chains and sequence ranges	Author chain 0； PDBConstruct 1–351； UniProt 1–351 Author chain 1； PDBConstruct 1–351； UniProt 1–351 Author chain 10； PDBConstruct 1–351； UniProt 1–351 Author chain 11； PDBConstruct 1–351； UniProt 1–351 Author chain 12； PDBConstruct 1–351； UniProt 1–351 Author chain 13； PDBConstruct 1–351； UniProt 1–351 Author chain 14； PDBConstruct 1–351； UniProt 1–351 Author chain 15； PDBConstruct 1–351； UniProt 1–351 Author chain 16； PDBConstruct 1–351； UniProt 1–351 Author chain 17； PDBConstruct 1–351； UniProt 1–351 Author chain 18； PDBConstruct 1–351； UniProt 1–351 Author chain 19； PDBConstruct 1–351； UniProt 1–351 Author chain 2； PDBConstruct 1–351； UniProt 1–351 Author chain 22； PDBConstruct 1–351； UniProt 1–351 Author chain 23； PDBConstruct 1–351； UniProt 1–351 Author chain 3； PDBConstruct 1–351； UniProt 1–351 Author chain 4； PDBConstruct 1–351； UniProt 1–351 Author chain 5； PDBConstruct 1–351； UniProt 1–351 Author chain 6； PDBConstruct 1–351； UniProt 1–351 Author chain 7； PDBConstruct 1–351； UniProt 1–351 Author chain 8； PDBConstruct 1–351； UniProt 1–351 Author chain 9； PDBConstruct 1–351； UniProt 1–351

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 108	Microtubule associated protein SPM1 × 22 （A0A7J6K285） Tubulin alpha chain × 26 （P10873） Tubulin beta chain × 26 （I7BFC9） TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 3 （A0A7J6K913） TLAP2 (thioredoxin-like associated protein), TGME49_232130 × 4 （A0A125YLA3） TRXL1, TGME49_232410 × 22 （Q8MPF4） TRXL2, TGME49_225790 × 2 （A0A7J6K232） GUANOSINE-5'-DIPHOSPHATE × 26 GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 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	2
Chains and sequence ranges	Author chain A； PDBConstruct 1–583； UniProt 1–583 Author chain B； PDBConstruct 1–583； UniProt 1–583 Author chain C； PDBConstruct 1–583； UniProt 1–583

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 108	Microtubule associated protein SPM1 × 22 （A0A7J6K285） TLAP3 (apical cap protein AC5), TGME49_235380 × 3 （A0A151H4L4） Tubulin beta chain × 26 （I7BFC9） TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 3 （A0A7J6K913） TLAP2 (thioredoxin-like associated protein), TGME49_232130 × 4 （A0A125YLA3） TRXL1, TGME49_232410 × 22 （Q8MPF4） TRXL2, TGME49_225790 × 2 （A0A7J6K232） GUANOSINE-5'-DIPHOSPHATE × 26 GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 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 108	Microtubule associated protein SPM1 × 22 （A0A7J6K285） TLAP3 (apical cap protein AC5), TGME49_235380 × 3 （A0A151H4L4） Tubulin alpha chain × 26 （P10873） TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 3 （A0A7J6K913） TLAP2 (thioredoxin-like associated protein), TGME49_232130 × 4 （A0A125YLA3） TRXL1, TGME49_232410 × 22 （Q8MPF4） TRXL2, TGME49_225790 × 2 （A0A7J6K232） GUANOSINE-5'-DIPHOSPHATE × 26 GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 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

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 108	Microtubule associated protein SPM1 × 22 （A0A7J6K285） TLAP3 (apical cap protein AC5), TGME49_235380 × 3 （A0A151H4L4） Tubulin alpha chain × 26 （P10873） Tubulin beta chain × 26 （I7BFC9） TLAP2 (thioredoxin-like associated protein), TGME49_232130 × 4 （A0A125YLA3） TRXL1, TGME49_232410 × 22 （Q8MPF4） TRXL2, TGME49_225790 × 2 （A0A7J6K232） GUANOSINE-5'-DIPHOSPHATE × 26 GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 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	5
Chains and sequence ranges	Author chain E； PDBConstruct 1–336； UniProt 1–336 Author chain F； PDBConstruct 1–336； UniProt 1–336 Author chain G； PDBConstruct 1–336； UniProt 1–336

TLAP2 (thioredoxin-like associated protein), TGME49_232130

OrganismNot specified

UniProt A0A125YLA3

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 108	Microtubule associated protein SPM1 × 22 （A0A7J6K285） TLAP3 (apical cap protein AC5), TGME49_235380 × 3 （A0A151H4L4） Tubulin alpha chain × 26 （P10873） Tubulin beta chain × 26 （I7BFC9） TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 3 （A0A7J6K913） TRXL1, TGME49_232410 × 22 （Q8MPF4） TRXL2, TGME49_225790 × 2 （A0A7J6K232） GUANOSINE-5'-DIPHOSPHATE × 26 GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 26	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A125YLA3_TOXGM
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain H； PDBConstruct 1–446； UniProt 1–446 Author chain I； PDBConstruct 1–446； UniProt 1–446 Author chain J； PDBConstruct 1–446； UniProt 1–446 Author chain K； PDBConstruct 1–446； UniProt 1–446

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 108	Microtubule associated protein SPM1 × 22 （A0A7J6K285） TLAP3 (apical cap protein AC5), TGME49_235380 × 3 （A0A151H4L4） Tubulin alpha chain × 26 （P10873） Tubulin beta chain × 26 （I7BFC9） TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 3 （A0A7J6K913） TLAP2 (thioredoxin-like associated protein), TGME49_232130 × 4 （A0A125YLA3） TRXL2, TGME49_225790 × 2 （A0A7J6K232） GUANOSINE-5'-DIPHOSPHATE × 26 GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 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 108	Microtubule associated protein SPM1 × 22 （A0A7J6K285） TLAP3 (apical cap protein AC5), TGME49_235380 × 3 （A0A151H4L4） Tubulin alpha chain × 26 （P10873） Tubulin beta chain × 26 （I7BFC9） TLAP4 (thioredoxin-like associated protein), TGME49_201760 × 3 （A0A7J6K913） TLAP2 (thioredoxin-like associated protein), TGME49_232130 × 4 （A0A125YLA3） TRXL1, TGME49_232410 × 22 （Q8MPF4） GUANOSINE-5'-DIPHOSPHATE × 26 GUANOSINE-5'-TRIPHOSPHATE × 26 MAGNESIUM ION × 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_id	9ya3
Deposition date deposition_date	2025-09-15
Structure title title	Cryo-EM structure of the apical region of subpellicular microtubule (SPMT) from Toxoplasma gondii (8-nm repeat)
Keywords keywords	;Tubulin, Microtubule, Microtubule Inner Protein, Microtubule-associated Protein, Toxoplasma gondii, conoid, conoid fiber, subpellicular microtubule, SPMT, STRUCTURAL PROTEIN ;; STRUCTURAL PROTEIN
Experimental Method method	ELECTRON 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.

9ya3__assembly_1__model_1

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

Download this curve (.dat)

9ya3__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9ya3__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	0.00 Å
Rg (electron density)	120.50 Å
Total Rg	120.60 Å
Atom count	228257
Residues	28883
Excluded volume	4037400 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9ya3__assembly_1__model_1`	108-meric （108）	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)

Entity 1 Entity 1 polymer

Description description	Microtubule associated protein SPM1
Molecular weight formula_weight	38845.8 kDa
Source method src_method	nat
Copy count entity_count	22

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	0,1,10,11,12,13,14,15,16,17,18,19,2,22,23,3,4,5,6,7,8,9
Atom count atom_count	228257

MSGGNSNTPKKLPSEEGSDYGYPQKPQKYLPKSEQAEPDYSACCKGNDAYKGASHGTVQFSHPEEAQKYAGAAAGAETIQRGRERVAADRQPRAAGDVPARRLHLSDVDEAHRGQSPSRHPGYCVEELCTCGMHKCIPSRAPVPFTGSTQYRQEFVPKPLPPPTQVSQVTLPPSLPFEAESSYRTEFVAKPLPPPAKFSEVKLPPTLPFHGESAYRTDYVPKPLPEVAKPVEVKLPPTLPFNAQSCYRSEYVAKPLPPPVQTVEVKLPPSLPFEGSTHYRDEFQVKPLPPATKVTEVKLPPSLPFDATSMYRSDYVAKSNPICPVSKLPQYPAATYPQNHVFWDPDTKQWY

Entity 2 Entity 2 polymer

Description description	TLAP3 (apical cap protein AC5), TGME49_235380
Molecular weight formula_weight	65286.1 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C

MPRPGVFELNYGEESRHSPVPKDPSTVTYGDASVGVVHHPLPAAGMYRQPCAFPHGSGFSKQSNETAFPDYPSTEHVAQRYVPPMDDKRQWAGHTSYYAPATMEQRGYQDARYFGAELMPKSQGGENPQNHPIMPSEAAEYGPRKPDCGRLIAAPHEGQVNNLSQVDGRICGTLPVIDNQSFQVEPCFRAPTIATGIPRLQTMKGRDAFAQDATRQRALQGHRTADLLKTPFDYDLFHRTRLPPSAGASIQAAGKEIDWSEKKLFRKAVVSTVFASDQVAERLRQDLPSPNTRDGQRTNADHGNRRNWSENIESLLRQATPVESSAENDPIFTAKVEERSFDSSLLYHGCRHLKKRSAFGHTPDAVAQLLRSSAEAGKGERPLVPSRPSRPSQHDSTQLKRVLSYHPDPEADSKGCFEQRARLRRSQLVTAKNSCRWGVNVFGYDLSPPRRNRLYALRDHLDSKLVPNQSTDDATHIKPRHTNVLSTSLHMSKLVPVTDLSPRPSFRYHADTGSLDATLLPVDAVPQERIGRRLISPPESSLQSNFVPSHEEVGRHKRFLVNSRDSLQGNMIPIVKECTRRRK

Entity 3 Entity 3 polymer

Description description	Tubulin alpha chain
Molecular weight formula_weight	50166.6 kDa
Source method src_method	nat
Copy count entity_count	26

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A0,A2,A4,A6,A8,B0,B2,B4,B6,B8,C0,C2,C4,C6,C8,D0,D2,D4,D6,D8,E0,E2,E4,E6,E8,F0

MREVISIHVGQAGIQIGNACWELFCLEHGIQPDGQMPSDKTIGGGDDAFNTFFSETGAGKHVPRCVFLDLEPTVVDEVRTGTYRHLFHPEQLISGKEDAANNFARGHYTIGKEIVDLSLDRIRKLADNCTGLQGFLMFNAVGGGTGSGLGCLLLERLSVDYGKKSKLNFCSWPSPQVSTAVVEPYNSVLSTHSLLEHTDVAVMLDNEAIYDICRRNLDIERPTYTNLNRLIAQVISSLTASLRFDGALNVDVTEFQTNLVPYPRIHFMLSSYAPIISAEKAYHEQLSVAEITNSAFEPASMMAKCDPRHGKYMACCLMYRGDVVPKDVNAAVATIKTKRTIQFVDWCPTGFKCGINYQPPTVVPGGDLAKVMRAVCMISNSTAIAEVFSRMDHKFDLMYAKRAFVHWYVGEGMEEGEFSEAREDLAALEKDYEEVGIETAEGEGEEEGYGDEY

Entity 4 Entity 4 polymer

Description description	Tubulin beta chain
Molecular weight formula_weight	50119.1 kDa
Source method src_method	nat
Copy count entity_count	26

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A1,A3,A5,A7,A9,B1,B3,B5,B7,B9,C1,C3,C5,C7,C9,D1,D3,D5,D7,D9,E1,E3,E5,E7,E9,F1

MREIVHVQGGQCGNQIGAKFWEVISDEHGIDPTGTYCGDSDLQLERINVFYNEATGGRFVPRAILMDLEPGTMDSVRAGPFGQLFRPDNFVFGQTGAGNNWAKGHYTEGAELIDSVLDVVRKEAEGCDCLQGFQITHSLGGGTGSGMGTLLISKVREEYPDRIMETFSVFPSPKVSDTVVEPYNATLSVHQLVENADEVQVIDNEALYDICFRTLKLTTPTYGDLNHLVSAAMSGVTCCLRFPGQLNSDLRKLAVNLIPFPRLHFFLIGFAPLTSRGSQQYRALSVPELTQQMFDAKNMMCASDPRHGRYLTASAMFRGRMSTKEVDEQMLNVQNKNSSYFVEWIPNNMKSSVCDIPPKGLKMSVTFVGNSTAIQEMFKRVSDQFTAMFRRKAFLHWYTGEGMDEMEFTEAESNMNDLVSEYQQYQDATAEEEGEFDEEEGEMGAEEGA

Entity 5 Entity 5 polymer

Description description	TLAP4 (thioredoxin-like associated protein), TGME49_201760
Molecular weight formula_weight	37360.2 kDa
Source method src_method	nat
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E,F,G

MERSGHLCKMEPWKQKVPQCLSLHGSNSLRGGKRTYNCNVLMDNWRNDRLDAHNDQKLTSWRIPHPLYTELPQGSKYETHYRQSYDYEDWARRPVRLSKYGLLGHDDSGAESWTTETRSEYEPPRLRRDQLKAAGQWPYGEDIYPRHVHGNEEFMCPHPMAIHVSRTHREDYIRSLTPRPAYERPPAGVPSSSGRLPGVPPYANDPISHHGGSQEQRHFCRMPCRNPSGSSSVQGTTGVDARASPAGSPVFAGQVPAQVKQEGGECGQGYAGIAATEDGLVDHGNSQTDRSAGQHCMLNASGGSERAHAAANTSTCPQRKESDPQPTVSWAAVPCQ

Entity 6 Entity 6 polymer

Description description	TLAP2 (thioredoxin-like associated protein), TGME49_232130
Molecular weight formula_weight	47924.4 kDa
Source method src_method	nat
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H,I,J,K

MDPRGQPVGPARPGVPPQMMRPQGGPPPGAFPGGPRGPAGAPFGAPMGPGGPMGPPRGPGPQMGPPRGPGPQMGPPRGQQGPPPPGVRGLMPGMTPQGPPGARPGMPPPGTMPMGPDGKLRMQPQTAPGAPPAGMPGTGMPPQQVPRGPMGHVGGGTGGMPAPDARQPVPSKTDSHGLQQKDLAQRSRNLRTLEDDERSDHQFGEEILNKGLQTFARLVALNDVGDLGAWNGYTWKSRRPPSVFFINITHDPEGRLWAVTESNEVGKLTVKGFKAIGHIGQEDVVDITFDPKDGTLWAINRVGELLHWNGYTWDKKYHAGFHKLRAATFDRKGNLWVVNTAGEIAMWDEEEQQWDLKKVPGATRLHTLAFDENNKLWVLGSHGELMLLAANRWVVYGWVGCWKFRDISFRWSKTAIEQLRAVRSTGTVFGGRSSALADRLPVPQGA

Entity 7 Entity 7 polymer

Description description	TRXL1, TGME49_232410
Molecular weight formula_weight	24939.3 kDa
Source method src_method	nat
Copy count entity_count	22

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	a,b,c,d,e,f,g,h,i,j,m,n,o,p,q,r,s,t,u,v,w,x

MSQPVFASPLNVEKRRLNEERALMQAQKAGGEGVNIQLPPNYGDMDLILFPEGSLKNSNNTVIPQSHLKGKSVALYFADGADPKCASLLPFLLNYYRTMNEGGANQKIEIIFVSLDRDREAFESHRAHMPWLSIDLENPLTEILKRHFRVMKEYEVPTYGYGSRTGVPSVIVIGSDGREAQFLPICSGLEEGDRALLRWDWRNTKFASDQFHVRPTLLEQ

Entity 8 Entity 8 polymer

Description description	TRXL2, TGME49_225790
Molecular weight formula_weight	21687.9 kDa
Source method src_method	nat
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	k,l

MLAADCFFGPDVVKRTQQGNYVPVRPDHFAGVSVALFFAKAGHSKCAQIVPVVRQFYKTTNFSGEKAVIEIIYVSLDKDEQDFERVRALMPWCSVEYKSCLRKKLIERYRVPNGELAFGTVRIPSTAIPLLIVIGPNGEEAGRMNFQQSDEFVLQRWDYRFNKWPGSAQRLRTLNDATDPWKKRLPQNV

Entity 9 Entity 9 non-polymer

Description description	GUANOSINE-5'-DIPHOSPHATE
Molecular weight formula_weight	443.2 kDa
Source method src_method	syn
Copy count entity_count	26

Entity 10 Entity 10 non-polymer

Description description	GUANOSINE-5'-TRIPHOSPHATE
Molecular weight formula_weight	523.2 kDa
Source method src_method	syn
Copy count entity_count	26

Entity 11 Entity 11 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	26

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Resolution resolution	3.30 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	225207

Cryo-EM structure of the apical region of subpellicular microtubule (SPMT) from Toxoplasma gondii (8-nm repeat)

1. Protein Identity and Related Structures Protein Identity & Related Structures

Microtubule associated protein SPM1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

TLAP3 (apical cap protein AC5), TGME49_235380

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Tubulin alpha chain

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Tubulin beta chain

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

TLAP4 (thioredoxin-like associated protein), TGME49_201760

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

TLAP2 (thioredoxin-like associated protein), TGME49_232130

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

TRXL1, TGME49_232410

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

TRXL2, TGME49_225790

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

9ya3__assembly_1__model_1

9ya3__assembly_1__model_1 | I(q)

9ya3__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (11)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer