SAXSdb — 3ibr

▼

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

Bacteriophytochrome

Pseudomonas aeruginosa

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	BILIVERDINE IX ALPHA × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	BPHY_PSEAE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–497； UniProt 1–497 Author chain B； PDBConstruct 1–497； UniProt 1–497

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	3ibr
Deposition date deposition_date	2009-07-16
Structure title title	Crystal Structure of P. aeruginosa Bacteriophytochrome Photosensory Core Module Mutant Q188L in the Mixed Pr/Pfr State
Keywords keywords	;phytochrome, red-light photoreceptor, photoconversion, chromophore, ATP-binding, Kinase, Nucleotide-binding, Phosphoprotein, Photoreceptor protein, Receptor, Sensory transduction, Transferase ;; TRANSFERASE
Experimental Method method	X-RAY DIFFRACTION

▼

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.

3ibr__assembly_1__model_1

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

Download this curve (.dat)

3ibr__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3ibr__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	35.06 Å
Rg (electron density)	34.34 Å
Total Rg	34.82 Å
Atom count	7288
Residues	892
Excluded volume	129320 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3ibr__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	Bacteriophytochrome
Molecular weight formula_weight	57371.0 kDa
EC 编号 ec_number	2.7.13.3
Mutation mutation	Q188L
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	7530

MTSITPVTLANCEDEPIHVPGAIQPHGALVTLRADGMVLAASENIQALLGFVASPGSYLTQEQVGPEVLRMLEEGLTGNGPWSNSVETRIGEHLFDVIGHSYKEVFYLEFEIRTADTLSITSFTLNAQRIIAQVQLHNDTASLLSNVTDELRRMTGYDRVMAYRFRHDDSGEVVAESRREDLESYLGLRYPASDIPAQARRLYIQNPIRLIADVAYTPMRVFPALNPETNESFDLSYSVLRSVSPIHCEYLTNMGVRASMSISIVVGGKLWGLFSCHHMSPKLIPYPVRMSFQIFSQVCSAIVERLEQGRIAELLRVSTERRLALARRARDADDLFGALAHPDDGIAALIPCDGALVMLGGRTLSIRGDFERQAGNVLQRLQRDPERDIYHTDNWPQPSEDSPDGGDCCGVLAIRFHRQESGWIFWFRHEEVHRIRWGGKPEKLLTIGPSGPRLTPRGSFEAWEEVVRGHSTPWSETDLAIAEKLRLDLMELCLNHALEHHHHHH

Source Source

Source organism organism	Pseudomonas aeruginosa
NCBI taxonomy ID ncbi_taxonomy_id	287
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	BILIVERDINE IX ALPHA
Molecular weight formula_weight	582.6 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	2

▼

6. Fold Classification (SCOP + CATH) 12 domains

SCOP 2.08 (6 domains)

Domain ID domain_id	d3ibra1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.110 — Profilin-like
Superfamily Superfamily superfamily	d.110.3 — PYP-like sensor domain (PAS domain)
Family Family family	d.110.3.9 — BphP N-terminal domain-like

Domain ID domain_id	d3ibra2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.110 — Profilin-like
Superfamily Superfamily superfamily	d.110.2 — GAF domain-like
Family Family family	d.110.2.0 — automated matches

Domain ID domain_id	d3ibra3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.110 — Profilin-like
Superfamily Superfamily superfamily	d.110.2 — GAF domain-like
Family Family family	d.110.2.0 — automated matches

Domain ID domain_id	d3ibrb1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.110 — Profilin-like
Superfamily Superfamily superfamily	d.110.3 — PYP-like sensor domain (PAS domain)
Family Family family	d.110.3.9 — BphP N-terminal domain-like

Domain ID domain_id	d3ibrb2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.110 — Profilin-like
Superfamily Superfamily superfamily	d.110.2 — GAF domain-like
Family Family family	d.110.2.0 — automated matches

Domain ID domain_id	d3ibrb3
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.110 — Profilin-like
Superfamily Superfamily superfamily	d.110.2 — GAF domain-like
Family Family family	d.110.2.0 — automated matches

CATH v4.4 (6 domains)

Domain ID domain_id	3ibrA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	450 — Beta-Lactamase
Homologous superfamily homologous superfamily	40 — GAF domain

Domain ID domain_id	3ibrA02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	450 — Beta-Lactamase
Homologous superfamily homologous superfamily	20 — PAS domain

Domain ID domain_id	3ibrA03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	450 — Beta-Lactamase
Homologous superfamily homologous superfamily	270 — PHY domain

Domain ID domain_id	3ibrB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	450 — Beta-Lactamase
Homologous superfamily homologous superfamily	40 — GAF domain

Domain ID domain_id	3ibrB02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	450 — Beta-Lactamase
Homologous superfamily homologous superfamily	20 — PAS domain

Domain ID domain_id	3ibrB03
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	450 — Beta-Lactamase
Homologous superfamily homologous superfamily	270 — PHY domain

▶

Unit-cell length a length_a	108.902 Å
Unit-cell length b length_b	108.902 Å
Unit-cell length c length_c	188.900 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	12

Space group space_group	P 65
Space-group number int_tables_number	170
Crystal system crystal_system	—

Resolution resolution	2.970 Å
Low-resolution limit resolution_low	37.740 Å
R factor r_factor	0.2360
R_work r_work	0.2330
R_free r_free	0.3070

Crystal Structure of P. aeruginosa Bacteriophytochrome Photosensory Core Module Mutant Q188L in the Mixed Pr/Pfr State

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

Bacteriophytochrome

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

3ibr__assembly_1__model_1

3ibr__assembly_1__model_1 | I(q)

3ibr__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 (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) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (1)

Crystal Structure of P. aeruginosa Bacteriophytochrome Photosensory Core Module Mutant Q188L in the Mixed Pr/Pfr State

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

Bacteriophytochrome

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

3ibr__assembly_1__model_1

3ibr__assembly_1__model_1 | I(q)

3ibr__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 (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) 12 domains

SCOP 2.08 (6 domains)

CATH v4.4 (6 domains)

7. Citations (1)