SAXSdb — 1p23

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

TRANSMEMBRANE PROTEIN TMP21 PRECURSOR

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 4	No other associated polymer	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TMP21_RABIT
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–14； UniProt 207–219 Author chain B； PDBConstruct 2–14； UniProt 207–219 Author chain C； PDBConstruct 2–14； UniProt 207–219 Author chain D； PDBConstruct 2–14； UniProt 207–219

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	1p23
Deposition date deposition_date	1998-11-17
Structure title title	STRUCTURE OF THE DIMERIZED CYTOPLASMIC DOMAIN OF P23 IN SOLUTION, NMR, 10 STRUCTURES
Keywords keywords	;TRANSPORT, PROTEIN TRANSPORT, TRANSMEMBRANE, GLYCOPROTEIN, VESICULAR TRANSPORT, COP, COATOMER, GOLGI STACK, SOLUTION STRUCTURE, P24 FAMILY, INTEGRAL MEMBRANE PROTEIN, MEMBRANE PROTEIN ;; MEMBRANE PROTEIN
Experimental Method method	SOLUTION NMR

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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.

1p23__assembly_1__model_9

Assembly 1 · Model 9 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1p23__assembly_1__model_9 | I(q)

100 plotted points; both axes use logarithmic scales.

1p23__assembly_1__model_9 | P(r) · Pending

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

Rg（Guinier）	13.43 Å
Rg (electron density)	12.09 Å
Total Rg	13.70 Å
Atom count	1080
Residues	56
Excluded volume	9565 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1p23__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	2	`1p23__assembly_1__model_2`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	3	`1p23__assembly_1__model_3`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	4	`1p23__assembly_1__model_4`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	5	`1p23__assembly_1__model_5`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	6	`1p23__assembly_1__model_6`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	7	`1p23__assembly_1__model_7`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	8	`1p23__assembly_1__model_8`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	9	`1p23__assembly_1__model_9`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
1	10	`1p23__assembly_1__model_10`	tetrameric （4）	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 (1)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1p23a_
Class class	j — Peptides
Fold Fold fold	j.35 — Transmembrane helical fragments
Superfamily Superfamily superfamily	j.35.1 — Transmembrane helical fragments
Family Family family	j.35.1.1 — Transmembrane helical fragments

Domain ID domain_id	d1p23b_
Class class	j — Peptides
Fold Fold fold	j.35 — Transmembrane helical fragments
Superfamily Superfamily superfamily	j.35.1 — Transmembrane helical fragments
Family Family family	j.35.1.1 — Transmembrane helical fragments

Domain ID domain_id	d1p23c_
Class class	j — Peptides
Fold Fold fold	j.35 — Transmembrane helical fragments
Superfamily Superfamily superfamily	j.35.1 — Transmembrane helical fragments
Family Family family	j.35.1.1 — Transmembrane helical fragments

Domain ID domain_id	d1p23d_
Class class	j — Peptides
Fold Fold fold	j.35 — Transmembrane helical fragments
Superfamily Superfamily superfamily	j.35.1 — Transmembrane helical fragments
Family Family family	j.35.1.1 — Transmembrane helical fragments

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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	—

Description description	TRANSMEMBRANE PROTEIN TMP21 PRECURSOR
Molecular weight formula_weight	1820.3 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	10800

STRUCTURE OF THE DIMERIZED CYTOPLASMIC DOMAIN OF P23 IN SOLUTION, NMR, 10 STRUCTURES

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

TRANSMEMBRANE PROTEIN TMP21 PRECURSOR

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

1p23__assembly_1__model_9

1p23__assembly_1__model_9 | I(q)

1p23__assembly_1__model_9 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (4 domains)

7. Citations (1)

STRUCTURE OF THE DIMERIZED CYTOPLASMIC DOMAIN OF P23 IN SOLUTION, NMR, 10 STRUCTURES

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

TRANSMEMBRANE PROTEIN TMP21 PRECURSOR

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

1p23__assembly_1__model_9

1p23__assembly_1__model_9 | I(q)

1p23__assembly_1__model_9 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

5. Entities and Polymers Entities & Polymers (1)

Entity 1 Entity 1 polymer

Polymer Polymer

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (4 domains)

7. Citations (1)