SAXSdb — 9htd

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

Prolyl 4-hydroxylase subunit alpha-2

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	GLY-PRO-ALA-GLY-PRO-HYP-GLY × 1 GLYCINE × 4 SULFATE ION × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	P4HA2_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 8–102； UniProt 163–257

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	9htd
Deposition date deposition_date	2024-12-19
Last revision last_revision	2025-09-24
Structure title title	Peptide-substrate-binding (PSB) domain of human type II collagen prolyl 4-hydroxylase complexed with Pro-Hyp-Gly-Pro-Ala-Gly-Pro-Hyp-Gly.
Keywords keywords	collagen, tetratricopeptide, extracellular matrix, PROTEIN BINDING; PROTEIN BINDING
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.

9htd__assembly_1__model_1

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

Download this curve (.dat)

9htd__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9htd__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	14.50 Å
Rg (electron density)	13.23 Å
Total Rg	14.41 Å
Atom count	1608
Residues	100
Excluded volume	14442 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9htd__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 (5)

Entity 1 Entity 1 polymer

Description description	Prolyl 4-hydroxylase subunit alpha-2
Molecular weight formula_weight	11920.3 kDa
EC 编号 ec_number	1.14.11.2
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	1663

MHHHHHHMLSVDDCFGMGRSAYNEGDYYHTVLWMEQVLKQLDAGEEATTTKSQVLDYLSYAVFQLGDLHRALELTRRLLSLDPSHERAGGNLRYFEQLLEEE

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	GLY-PRO-ALA-GLY-PRO-HYP-GLY
Molecular weight formula_weight	777.8 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

PPGPAGPPG

Entity 3 Entity 3 non-polymer

Description description	GLYCINE
Molecular weight formula_weight	75.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 4 Entity 4 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	55

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Unit-cell length a length_a	56.655 Å
Unit-cell length b length_b	56.655 Å
Unit-cell length c length_c	68.828 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	6

Space group space_group	P 32 2 1
Space-group number int_tables_number	154
Crystal system crystal_system	—

Resolution resolution	1.751 Å
Low-resolution limit resolution_low	49.060 Å
R factor r_factor	—
R_work r_work	0.1648
R_free r_free	0.1951

Peptide-substrate-binding (PSB) domain of human type II collagen prolyl 4-hydroxylase complexed with Pro-Hyp-Gly-Pro-Ala-Gly-Pro-Hyp-Gly.

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

Prolyl 4-hydroxylase subunit alpha-2

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

9htd__assembly_1__model_1

9htd__assembly_1__model_1 | I(q)

9htd__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

7. Citations (1)

Peptide-substrate-binding (PSB) domain of human type II collagen prolyl 4-hydroxylase complexed with Pro-Hyp-Gly-Pro-Ala-Gly-Pro-Hyp-Gly.

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

Prolyl 4-hydroxylase subunit alpha-2

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

9htd__assembly_1__model_1

9htd__assembly_1__model_1 | I(q)

9htd__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

7. Citations (1)