SAXSdb — 1iip

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

Cyclophilin 40

Bos taurus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	GLYCEROL × 1 water × 1	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 4	GLYCEROL × 4 water × 4	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 2	GLYCEROL × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PPID_BOVIN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–370； UniProt 1–370

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	1iip
Deposition date deposition_date	2001-04-24
Structure title title	Bovine Cyclophilin 40, Tetragonal Form
Keywords keywords	PPIASE IMMUNOPHILIN TETRATRICOPEPTIDE, ISOMERASE; ISOMERASE
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.

1iip__assembly_2__model_1

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

Download this curve (.dat)

1iip__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1iip__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	37.59 Å
Rg (electron density)	36.69 Å
Total Rg	37.00 Å
Atom count	9124
Residues	1188
Excluded volume	162000 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1iip__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1iip__assembly_2__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`1iip__assembly_3__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	Cyclophilin 40
Molecular weight formula_weight	40678.3 kDa
EC 编号 ec_number	5.2.1.8
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	2493

MSHPSPQAKPSNPSNPRVFFDVDIGGERVGRIVLELFADIVPKTAENFRALCTGEKGIGPTTGKPLHFKGCPFHRIIKKFMIQGGDFSNQNGTGGESIYGEKFEDENFHYKHDKEGLLSMANAGSNTNGSQFFITTVPTPHLDGKHVVFGQVIKGMGVAKILENVEVKGEKPAKLCVIAECGELKEGDDWGIFPKDGSGDSHPDFPEDADVDLKDVDKILLISEDLKNIGNTFFKSQNWEMAIKKYTKVLRYVEGSRAAAEDADGAKLQPVALSCVLNIGACKLKMSDWQGAVDSCLEALEIDPSNTKALYRRAQGWQGLKEYDQALADLKKAQEIAPEDKAIQAELLKVKQKIKAQKDKEKAAYAKMFA

Source Source

Source organism organism	Bos taurus
Common name common_name	cattle
NCBI taxonomy ID ncbi_taxonomy_id	9913
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	212

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1iipa1
Class class	a — All alpha proteins
Fold Fold fold	a.118 — alpha-alpha superhelix
Superfamily Superfamily superfamily	a.118.8 — TPR-like
Family Family family	a.118.8.1 — Tetratricopeptide repeat (TPR)

Domain ID domain_id	d1iipa2
Class class	b — All beta proteins
Fold Fold fold	b.62 — Cyclophilin-like
Superfamily Superfamily superfamily	b.62.1 — Cyclophilin-like
Family Family family	b.62.1.1 — Cyclophilin (peptidylprolyl isomerase)

CATH v4.4 (2 domains)

Domain ID domain_id	1iipA01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	100 — Cyclophilin
Homologous superfamily homologous superfamily	10 — Cyclophilin-like

Domain ID domain_id	1iipA02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	150 — DNA polymerase; domain 1
Homologous superfamily homologous superfamily	160 —

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Unit-cell length a length_a	94.585 Å
Unit-cell length b length_b	94.585 Å
Unit-cell length c length_c	118.326 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 42 2 2
Space-group number int_tables_number	93
Crystal system crystal_system	—

Resolution resolution	2.000 Å
Low-resolution limit resolution_low	24.000 Å
R factor r_factor	0.2360
R_work r_work	0.2360
R_free r_free	0.3050

Bovine Cyclophilin 40, Tetragonal Form

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

Cyclophilin 40

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

1iip__assembly_2__model_1

1iip__assembly_2__model_1 | I(q)

1iip__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 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Bovine Cyclophilin 40, Tetragonal Form

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

Cyclophilin 40

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

1iip__assembly_2__model_1

1iip__assembly_2__model_1 | I(q)

1iip__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 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)