SAXSdb — 4frz

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

Kinesin-like calmodulin-binding protein

Arabidopsis thaliana

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	MAGNESIUM ION × 2 ADENOSINE-5'-DIPHOSPHATE × 2 IMIDAZOLE × 4 1,2-ETHANEDIOL × 3 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	KCBP_ARATH
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–386； UniProt 875–1260 Author chain B； PDBConstruct 1–386； UniProt 875–1260

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	4frz
Deposition date deposition_date	2012-06-26
Structure title title	Arabidopsis KCBP motor domain dimerized via regulatory domain
Keywords keywords	kinesin motor domain, calmodulin binding motif, motor protein, KCBP interacting calcium binding protein (KIC), kinesin dimer; MOTOR PROTEIN
Experimental Method method	X-RAY DIFFRACTION

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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.

4frz__assembly_1__model_1

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

Download this curve (.dat)

4frz__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4frz__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	36.82 Å
Rg (electron density)	36.34 Å
Total Rg	36.64 Å
Atom count	5733
Residues	705
Excluded volume	101810 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4frz__assembly_1__model_1`	dimeric （2）	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	Kinesin-like calmodulin-binding protein
Molecular weight formula_weight	44040.9 kDa
Mutation mutation	C1131N
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	5831

RKRYYNTIEDMKGKIRVYCRIRPLNEKESSEREKQMLTTVDEFTVEHPWKDDKRKQHIYDRVFDMRASQDDIFEDTKYLVQSAVDGYNVCIFAYGQTGSGKTFTIYGHESNPGLTPRATKELFNILKRDSKRFSFSLKAYMVELYQDTLVDLLLPKSARRLKLEIKKDSKGMVFVENVTTIPISTLEELRMILERGSERRHVSGTNMNEESSRSHLILSVVIESIDLQTQSAARGKLSFVDLAGSERVKKSGSAGNQLKEAQSINKSLSALGDVIGALSSGNQHIPYRNHKLTMLMSDSLGGNAKTLMFVNVSPAESNLDETYNSLLYASRVRTIVNDPSKHISSKEMVRLKKLVAYWKEQAGKKGEEEDLVDIEEDRTRKDEADS

Source Source

Source organism organism	Arabidopsis thaliana
Common name common_name	mouse-ear cress,thale-cress
NCBI taxonomy ID ncbi_taxonomy_id	3702
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

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

Entity 3 Entity 3 non-polymer

Description description	ADENOSINE-5'-DIPHOSPHATE
Molecular weight formula_weight	427.2 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	IMIDAZOLE
Molecular weight formula_weight	69.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 5 Entity 5 non-polymer

Description description	1,2-ETHANEDIOL
Molecular weight formula_weight	62.1 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	98

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d4frza_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.9 — Motor proteins

Domain ID domain_id	d4frzb_
Class class	c — Alpha and beta proteins (a/b)
Fold Fold fold	c.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamily	c.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family family	c.37.1.9 — Motor proteins

CATH v4.4 (2 domains)

Domain ID domain_id	4frzA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	850 — Kinesin
Homologous superfamily homologous superfamily	10 — Kinesin motor domain

Domain ID domain_id	4frzB00
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	45.713 Å
Unit-cell length b length_b	75.068 Å
Unit-cell length c length_c	120.598 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	91.45 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	2.400 Å
Low-resolution limit resolution_low	25.000 Å
R factor r_factor	0.2629
R_work r_work	0.2254
R_free r_free	—

Arabidopsis KCBP motor domain dimerized via regulatory domain

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

Kinesin-like calmodulin-binding protein

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

4frz__assembly_1__model_1

4frz__assembly_1__model_1 | I(q)

4frz__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Arabidopsis KCBP motor domain dimerized via regulatory domain

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

Kinesin-like calmodulin-binding protein

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

4frz__assembly_1__model_1

4frz__assembly_1__model_1 | I(q)

4frz__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)