SAXSdb — 3kza

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

Beta-lactoglobulin

Equus caballus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Homooligomer	Protein 2	water × 2	Consistent with protein count
2	Insufficient information	Monomer	Protein 1	water × 1	Consistent with protein count
3	Insufficient information	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	LACB_BOVIN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 17–27； UniProt 33–43 Author chain A； PDBConstruct 42–49； UniProt 58–65 Author chain A； PDBConstruct 52–62； UniProt 68–78 Author chain A； PDBConstruct 66–73； UniProt 82–89 Author chain A； PDBConstruct 80–86； UniProt 96–102 Author chain A； PDBConstruct 89–95； UniProt 105–111 Author chain A； PDBConstruct 102–108； UniProt 118–124 Author chain A； PDBConstruct 117–124； UniProt 133–140 Author chain A； PDBConstruct 130–138； UniProt 146–154 Author chain A； PDBConstruct 145–153； UniProt 161–169 Author chain B； PDBConstruct 17–27； UniProt 33–43 Author chain B； PDBConstruct 42–49； UniProt 58–65 Author chain B； PDBConstruct 52–62； UniProt 68–78 Author chain B； PDBConstruct 66–73； UniProt 82–89 Author chain B； PDBConstruct 80–86； UniProt 96–102 Author chain B； PDBConstruct 89–95； UniProt 105–111 Author chain B； PDBConstruct 102–108； UniProt 118–124 Author chain B； PDBConstruct 117–124； UniProt 133–140 Author chain B； PDBConstruct 130–138； UniProt 146–154 Author chain B； PDBConstruct 145–153； UniProt 161–169

Beta-lactoglobulin

Equus caballus

UniProt P02758

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Homooligomer	Protein 2	water × 2	Consistent with protein count
2	Insufficient information	Monomer	Protein 1	water × 1	Consistent with protein count
3	Insufficient information	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	LACB1_HORSE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–16； UniProt 19–34 Author chain A； PDBConstruct 28–41； UniProt 46–59 Author chain A； PDBConstruct 50–51； UniProt 68–69 Author chain A； PDBConstruct 63–65； UniProt 81–83 Author chain A； PDBConstruct 74–79； UniProt 92–97 Author chain A； PDBConstruct 87–88； UniProt 105–106 Author chain A； PDBConstruct 96–101； UniProt 114–119 Author chain A； PDBConstruct 109–116； UniProt 127–134 Author chain A； PDBConstruct 125–129； UniProt 143–147 Author chain A； PDBConstruct 139–144； UniProt 156–161 Author chain A； PDBConstruct 154–162； UniProt 172–180 Author chain B； PDBConstruct 1–16； UniProt 19–34 Author chain B； PDBConstruct 28–41； UniProt 46–59 Author chain B； PDBConstruct 50–51； UniProt 68–69 Author chain B； PDBConstruct 63–65； UniProt 81–83 Author chain B； PDBConstruct 74–79； UniProt 92–97 Author chain B； PDBConstruct 87–88； UniProt 105–106 Author chain B； PDBConstruct 96–101； UniProt 114–119 Author chain B； PDBConstruct 109–116； UniProt 127–134 Author chain B； PDBConstruct 125–129； UniProt 143–147 Author chain B； PDBConstruct 139–144； UniProt 156–161 Author chain B； PDBConstruct 154–162； UniProt 172–180

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	3kza
Deposition date deposition_date	2009-12-08
Structure title title	Crystal structure of Gyuba, a patched chimera of b-lactglobulin
Keywords keywords	artificial protein, chimera protein, Disulfide bond, Milk protein, Retinol-binding, Secreted, Transport, TRANSPORT PROTEIN; TRANSPORT 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.

3kza__assembly_2__model_1

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

Download this curve (.dat)

3kza__assembly_2__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3kza__assembly_2__model_1 | P(r) · Pending

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

Rg（Guinier）	15.71 Å
Rg (electron density)	14.13 Å
Total Rg	15.38 Å
Atom count	1168
Residues	149
Excluded volume	21001 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3kza__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`3kza__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`3kza__assembly_3__model_1`	monomeric （1）	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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d3kzaa_
Class class	b — All beta proteins
Fold Fold fold	b.60 — Lipocalins
Superfamily Superfamily superfamily	b.60.1 — Lipocalins
Family Family family	b.60.1.1 — Retinol binding protein-like

Domain ID domain_id	d3kzab_
Class class	b — All beta proteins
Fold Fold fold	b.60 — Lipocalins
Superfamily Superfamily superfamily	b.60.1 — Lipocalins
Family Family family	b.60.1.1 — Retinol binding protein-like

CATH v4.4 (2 domains)

Domain ID domain_id	3kzaA00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	128 — Lipocalin
Homologous superfamily homologous superfamily	20 — Calycin beta-barrel core domain

Domain ID domain_id	3kzaB00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	128 — Lipocalin
Homologous superfamily homologous superfamily	20 — Calycin beta-barrel core domain

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Unit-cell length a length_a	68.925 Å
Unit-cell length b length_b	68.925 Å
Unit-cell length c length_c	151.616 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	2.000 Å
Low-resolution limit resolution_low	59.660 Å
R factor r_factor	0.2372
R_work r_work	0.2346
R_free r_free	0.2849

Description description	Beta-lactoglobulin
Molecular weight formula_weight	18310.9 kDa
Source method src_method	man
Copy count entity_count	2

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	2576

Crystal structure of Gyuba, a patched chimera of b-lactglobulin

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

Beta-lactoglobulin

State in the Current Structure

Other States of the Same Protein in the Database

Beta-lactoglobulin

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

3kza__assembly_2__model_1

3kza__assembly_2__model_1 | I(q)

3kza__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Source organism organism	Equus caballus
Common name common_name	equine, bovine
NCBI taxonomy ID ncbi_taxonomy_id	9796
Host organism host_organism	Escherichia coli

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	240

Crystal structure of Gyuba, a patched chimera of b-lactglobulin

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

Beta-lactoglobulin

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Beta-lactoglobulin

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

3kza__assembly_2__model_1

3kza__assembly_2__model_1 | I(q)

3kza__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)