SAXSdb — 2xze

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

STAM-BINDING PROTEIN

HOMO SAPIENS

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	CHARGED MULTIVESICULAR BODY PROTEIN 3 × 1 （Q9Y3E7） water × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	CHARGED MULTIVESICULAR BODY PROTEIN 3 × 1 （Q9Y3E7） water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	STABP_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–146； UniProt 1–146 Author chain B； PDBConstruct 1–146； UniProt 1–146

CHARGED MULTIVESICULAR BODY PROTEIN 3

HOMO SAPIENS

UniProt Q9Y3E7

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	STAM-BINDING PROTEIN × 1 （O95630） water × 2	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 2	STAM-BINDING PROTEIN × 1 （O95630） water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CHMP3_HUMAN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain Q； PDBConstruct 1–40； UniProt 183–222 Author chain R； PDBConstruct 1–40； UniProt 183–222

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	2xze
Deposition date deposition_date	2010-11-25
Structure title title	Structural basis for AMSH-ESCRT-III CHMP3 interaction
Keywords keywords	HYDROLASE-PROTEIN TRANSPORT COMPLEX; HYDROLASE/PROTEIN TRANSPORT
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.

2xze__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2xze__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

2xze__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	22.42 Å
Rg (electron density)	22.43 Å
Total Rg	22.85 Å
Atom count	1346
Residues	164
Excluded volume	23912 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`2xze__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`2xze__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Description description	STAM-BINDING PROTEIN
Molecular weight formula_weight	17162.6 kDa
EC 编号 ec_number	3.4.19.-
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	3091

MSDHGDVSLPPEDRVRALSQLGSAVEVNEDIPPRRYFRSGVEIIRMASIYSEEGNIEHAFILYNKYITLFIEKLPKHRDYKSAVIPEKKDTVKKLKEIAFPKAEELKAELLKRYTKEYTEYNEEKKKEAEELARNMAIQQELEKEK

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 2 Entity 2 polymer

Description description	CHARGED MULTIVESICULAR BODY PROTEIN 3
Molecular weight formula_weight	4331.7 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	Q,R

KVTDALPEPEPPGAMAASEDEEEEEEALEAMQSRLATLRS

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 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	386

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6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id	2xzeA00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	80 — Phosphotransferase system, lactose/cellobiose-type IIA subunit

Domain ID domain_id	2xzeB00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	80 — Phosphotransferase system, lactose/cellobiose-type IIA subunit

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Unit-cell length a length_a	45.970 Å
Unit-cell length b length_b	45.970 Å
Unit-cell length c length_c	206.910 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	8

Space group space_group	P 41
Space-group number int_tables_number	76
Crystal system crystal_system	—

Resolution resolution	1.750 Å
Low-resolution limit resolution_low	51.710 Å
R factor r_factor	0.1933
R_work r_work	0.1916
R_free r_free	0.2269

Structural basis for AMSH-ESCRT-III CHMP3 interaction

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

STAM-BINDING PROTEIN

State in the Current Structure

Other States of the Same Protein in the Database

CHARGED MULTIVESICULAR BODY PROTEIN 3

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

2xze__assembly_2__model_1

2xze__assembly_2__model_1 | I(q)

2xze__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (2)

Structural basis for AMSH-ESCRT-III CHMP3 interaction

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

STAM-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

CHARGED MULTIVESICULAR BODY PROTEIN 3

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

2xze__assembly_2__model_1

2xze__assembly_2__model_1 | I(q)

2xze__assembly_2__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

7. Citations (2)