SAXSdb — 8r44

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

Phytochrome A-2

Glycine max

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	PHYCOCYANOBILIN × 2 PENTAETHYLENE GLYCOL × 3 DI(HYDROXYETHYL)ETHER × 2 TRIETHYLENE GLYCOL × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PHYA2_SOYBN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–353； UniProt 51–402 Author chain B； PDBConstruct 2–353； UniProt 51–402

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	8r44
Deposition date deposition_date	2023-11-13
Structure title title	PAS-GAF bidomain of Glycine max phytochrome A
Keywords keywords	phytochrome, phycocyanobilin (PCB), PLANT PROTEIN; PLANT 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.

8r44__assembly_1__model_1

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

Download this curve (.dat)

8r44__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

8r44__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	28.08 Å
Rg (electron density)	26.78 Å
Total Rg	27.57 Å
Atom count	5082
Residues	628
Excluded volume	91958 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`8r44__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	Phytochrome A-2
Molecular weight formula_weight	40026.3 kDa
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	5669

MISGTADGVNQPRHDKVTTAYLHHMQKGKMIQPFGCLLALDEKTCKVIAYSENAPEMLTMVSHAVPSVGDHPALGIGTDIKTLFTAPSASALQKALGFAEVLLLNPVLIHCKTSGKPFYAIIHRVTGSMIIDFEPVKPYEVPMTAAGALQSYKLAAKAITRLQSLPSGSMERLCDTMVQEVFELTGYDRVMAYKFHEDDHGEVIAEITKPGLEPYLGLHYPATDIPQASRFLFMKNKVRMIVDCHAKHVRVLQDEKLPFDLTLCGSTLRAPHSCHAQYMANMDSIASLVMAVVVNDNEEDGDTDAIQPQKRKRLWGLVVCHNTTPRFVPFPLRYACEFLAQVFAIHVNKEIELHHHHHH

Source Source

Source organism organism	Glycine max
Common name common_name	soybean
NCBI taxonomy ID ncbi_taxonomy_id	3847
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	PHYCOCYANOBILIN
Molecular weight formula_weight	588.7 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	PENTAETHYLENE GLYCOL
Molecular weight formula_weight	238.3 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 non-polymer

Description description	DI(HYDROXYETHYL)ETHER
Molecular weight formula_weight	106.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 5 Entity 5 non-polymer

Description description	TRIETHYLENE GLYCOL
Molecular weight formula_weight	150.2 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	587

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Unit-cell length a length_a	55.287 Å
Unit-cell length b length_b	111.812 Å
Unit-cell length c length_c	68.273 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	92.31 °
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	1.580 Å
Low-resolution limit resolution_low	43.841 Å
R factor r_factor	—
R_work r_work	0.1750
R_free r_free	0.1945

PAS-GAF bidomain of Glycine max phytochrome A

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

Phytochrome A-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

8r44__assembly_1__model_1

8r44__assembly_1__model_1 | I(q)

8r44__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

7. Citations (2)

PAS-GAF bidomain of Glycine max phytochrome A

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

Phytochrome A-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

8r44__assembly_1__model_1

8r44__assembly_1__model_1 | I(q)

8r44__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

7. Citations (2)