SAXSdb — 6ojq

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

Tubulin beta-2B chain

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	Tubulin alpha-1B chain × 1 （P81947） Kinesin-1 heavy chain × 1 （P33176） PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER × 1 MAGNESIUM ION × 2 GUANOSINE-5'-TRIPHOSPHATE × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TBB2B_BOVIN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain B； PDBConstruct 1–426； UniProt 1–426

Tubulin alpha-1B chain

OrganismNot specified

UniProt P81947

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	Tubulin beta-2B chain × 1 （Q6B856） Kinesin-1 heavy chain × 1 （P33176） PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER × 1 MAGNESIUM ION × 2 GUANOSINE-5'-TRIPHOSPHATE × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TBA1B_BOVIN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain A； PDBConstruct 1–437； UniProt 1–437

Kinesin-1 heavy chain

Homo sapiens

UniProt P33176

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 3	Tubulin beta-2B chain × 1 （Q6B856） Tubulin alpha-1B chain × 1 （P81947） PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER × 1 MAGNESIUM ION × 2 GUANOSINE-5'-TRIPHOSPHATE × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	KINH_HUMAN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain K； PDBConstruct 1–317； UniProt 8–324

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	6ojq
Deposition date deposition_date	2019-04-12
Structure title title	Monomeric kinesin-1 motor domain in no-nucleotide state bound to GMPCPP-stabilized microtubule
Keywords keywords	Kinesin, Microtubule, MOTOR PROTEIN; MOTOR 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.

6ojq__assembly_1__model_1

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

Download this curve (.dat)

6ojq__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6ojq__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	33.31 Å
Rg (electron density)	32.62 Å
Total Rg	33.16 Å
Atom count	18080
Residues	1164
Excluded volume	162170 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6ojq__assembly_1__model_1`	trimeric （3）	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 (6)

Entity 1 Entity 1 polymer

Description description	Tubulin beta-2B chain
Molecular weight formula_weight	47825.9 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B
Atom count atom_count	18080

MREIVHIQAGQCGNQIGAKFWEVISDEHGIDPTGSYHGDSDLQLERINVYYNEAAGNKYVPRAILVDLEPGTMDSVRSGPFGQIFRPDNFVFGQSGAGNNWAKGHYTEGAELVDSVLDVVRKESESCDCLQGFQLTHSLGGGTGSGMGTLLISKIREEYPDRIMNTFSVVPSPKVSDTVVEPYNATLSVHQLVENTDETYCIDNEALYDICFRTLKLTTPTYGDLNHLVSATMSGVTTCLRFPGQLNADLRKLAVNMVPFPRLHFFMPGFAPLTSRGSQQYRALTVPELTQQMFDAKNMMAACDPRHGRYLTVAAVFRGRMSMKEVDEQMLNVQNKNSSYFVEWIPNNVKTAVCDIPPRGLKMSATFIGNSTAIQELFKRISEQFTAMFRRKAFLHWYTGEGMDEMEFTEAESNMNDLVSEYQQYQ

Entity 2 Entity 2 polymer

Description description	Tubulin alpha-1B chain
Molecular weight formula_weight	48665.0 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A

MRECISIHVGQAGVQIGNACWELYCLEHGIQPDGQMPSDKTIGGGDDSFNTFFSETGAGKHVPRAVFVDLEPTVIDEVRTGTYRQLFHPEQLITGKEDAANNYARGHYTIGKEIIDLVLDRIRKLADQCTGLQGFLVFHSFGGGTGSGFTSLLMERLSVDYGKKSKLEFSIYPAPQVSTAVVEPYNSILTTHTTLEHSDCAFMVDNEAIYDICRRNLDIERPTYTNLNRLISQIVSSITASLRFDGALNVDLTEFQTNLVPYPRIHFPLATYAPVISAEKAYHEQLSVAEITNACFEPANQMVKCDPRHGKYMACCLLYRGDVVPKDVNAAIATIKTKRSIQFVDWCPTGFKVGINYQPPTVVPGGDLAKVQRAVCMLSNTTAIAEAWARLDHKFDLMYAKRAFVHWYVGEGMEEGEFSEAREDMAALEKDYEEVGV

Entity 3 Entity 3 polymer

Description description	Kinesin-1 heavy chain
Molecular weight formula_weight	35445.8 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	K

NIKVMCRFRPLNESEVNRGDKYIAKFQGEDTVVIASKPYAFDRVFQSSTSQEQVYNDAAKKIVKDVLEGYNGTIFAYGQTSSGKTHTMEGKLHDPEGMGIIPRIVQDIFNYIYSMDENLEFHIKVSYFEIYLDKIRDLLDVSKTNLSVHEDKNRVPYVKGATERFVSSPDEVMDTIDEGKSNRHVAVTNMNEHSSRSHSIFLINVKQENTQTEQKLSGKLYLVDLAGSEKVSKTGAEGAVLDEAKNINKSLSALGNVISALAEGSTYVPYRDSKMTRILQDSLGGNARTTIVICCSPSSYNESETKSTLLFGQRAKT

Source Source

Source organism organism	Homo sapiens
Common name common_name	Human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 4 Entity 4 non-polymer

Description description	PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER
Molecular weight formula_weight	521.2 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 6 Entity 6 non-polymer

Description description	GUANOSINE-5'-TRIPHOSPHATE
Molecular weight formula_weight	523.2 kDa
Source method src_method	syn
Copy count entity_count	1

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6. Fold Classification (SCOP + CATH) 7 domains

CATH v4.4 (7 domains)

Domain ID domain_id	6ojqA01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1440 — Tubulin/FtsZ, GTPase domain

Domain ID domain_id	6ojqA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1330 — 60s Ribosomal Protein L30; Chain: A;
Homologous superfamily homologous superfamily	20 — Tubulin/FtsZ, C-terminal domain

Domain ID domain_id	6ojqA03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	600 — Helix hairpin bin

Domain ID domain_id	6ojqB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	1440 — Tubulin/FtsZ, GTPase domain

Domain ID domain_id	6ojqB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1330 — 60s Ribosomal Protein L30; Chain: A;
Homologous superfamily homologous superfamily	20 — Tubulin/FtsZ, C-terminal domain

Domain ID domain_id	6ojqB03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	600 — Helix hairpin bin

Domain ID domain_id	6ojqK01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	850 — Kinesin
Homologous superfamily homologous superfamily	10 — Kinesin motor domain

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	1

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	triclinic

Resolution resolution	3.67 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	403424

Monomeric kinesin-1 motor domain in no-nucleotide state bound to GMPCPP-stabilized microtubule

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

Tubulin beta-2B chain

State in the Current Structure

Other States of the Same Protein in the Database

Tubulin alpha-1B chain

State in the Current Structure

Other States of the Same Protein in the Database

Kinesin-1 heavy chain

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

6ojq__assembly_1__model_1

6ojq__assembly_1__model_1 | I(q)

6ojq__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

6. Fold Classification (SCOP + CATH) 7 domains

CATH v4.4 (7 domains)

7. Citations (1)

Monomeric kinesin-1 motor domain in no-nucleotide state bound to GMPCPP-stabilized microtubule

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

Tubulin beta-2B 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 alpha-1B 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

Kinesin-1 heavy 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

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

6ojq__assembly_1__model_1

6ojq__assembly_1__model_1 | I(q)

6ojq__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

6. Fold Classification (SCOP + CATH) 7 domains

CATH v4.4 (7 domains)

7. Citations (1)