SAXSdb — 1tf0

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

Serum albumin

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Peptostreptococcal albumin-binding protein × 1 （Q51911） DECANOIC ACID × 3 CITRIC ACID × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ALBU_HUMAN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–572； UniProt 25–596

Peptostreptococcal albumin-binding protein

Finegoldia magna

UniProt Q51911

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Serum albumin × 1 （P02768） DECANOIC ACID × 3 CITRIC ACID × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PAB_PEPMA
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–53； UniProt 213–265

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	1tf0
Deposition date deposition_date	2004-05-26
Structure title title	Crystal structure of the GA module complexed with human serum albumin
Keywords keywords	PROTEIN-PROTEIN COMPLEX, 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.

1tf0__assembly_1__model_1

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

Download this curve (.dat)

1tf0__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1tf0__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	28.02 Å
Rg (electron density)	26.97 Å
Total Rg	27.77 Å
Atom count	4902
Residues	609
Excluded volume	87633 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1tf0__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 (4)

Entity 1 Entity 1 polymer

Description description	Serum albumin
Molecular weight formula_weight	65317.7 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	4902

DAHKSEVAHRFKDLGEENFKALVLIAFAQYLQQCPFEDHVKLVNEVTEFAKTCVADESAENCDKSLHTLFGDKLCTVATLRETYGEMADCCAKQEPERNECFLQHKDDNPNLPRLVRPEVDVMCTAFHDNEETFLKKYLYEIARRHPYFYAPELLFFAKRYKAAFTECCQAADKAACLLPKLDELRDEGKASSAKQRLKCASLQKFGERAFKAWAVARLSQRFPKAEFAEVSKLVTDLTKVHTECCHGDLLECADDRADLAKYICENQDSISSKLKECCEKPLLEKSHCIAEVENDEMPADLPSLAADFVESKDVCKNYAEAKDVFLGMFLYEYARRHPDYSVVLLLRLAKTYETTLEKCCAAADPHECYAKVFDEFKPLVEEPQNLIKQNCELFEQLGEYKFQNALLVRYTKKVPQVSTPTLVEVSRNLGKVGSKCCKHPEAKRMPCAEDYLSVVLNQLCVLHEKTPVSDRVTKCCTESLVNRRPCFSALEVDETYVPKEFNAETFTFHADICTLSEKERQIKKQTALVELVKHKPKATKEQLKAVMDDFAAFVEKCCKADDKETCFAEEG

Entity 2 Entity 2 polymer

Description description	Peptostreptococcal albumin-binding protein
Molecular weight formula_weight	5939.8 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

TIDQWLLKNAKEDAIAELKKAGITSDFYFNAINKAKTVEEVNALKNEILKAHA

Source Source

Source organism organism	Finegoldia magna
NCBI taxonomy ID ncbi_taxonomy_id	334413
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 non-polymer

Description description	DECANOIC ACID
Molecular weight formula_weight	172.3 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 non-polymer

Description description	CITRIC ACID
Molecular weight formula_weight	192.1 kDa
Source method src_method	syn
Copy count entity_count	1

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6. Fold Classification (SCOP + CATH) 11 domains

SCOP 2.08 (4 domains)

Domain ID domain_id	d1tf0a1
Class class	a — All alpha proteins
Fold Fold fold	a.126 — Serum albumin-like
Superfamily Superfamily superfamily	a.126.1 — Serum albumin-like
Family Family family	a.126.1.1 — Serum albumin-like

Domain ID domain_id	d1tf0a2
Class class	a — All alpha proteins
Fold Fold fold	a.126 — Serum albumin-like
Superfamily Superfamily superfamily	a.126.1 — Serum albumin-like
Family Family family	a.126.1.1 — Serum albumin-like

Domain ID domain_id	d1tf0a3
Class class	a — All alpha proteins
Fold Fold fold	a.126 — Serum albumin-like
Superfamily Superfamily superfamily	a.126.1 — Serum albumin-like
Family Family family	a.126.1.1 — Serum albumin-like

Domain ID domain_id	d1tf0b_
Class class	a — All alpha proteins
Fold Fold fold	a.8 — immunoglobulin/albumin-binding domain-like
Superfamily Superfamily superfamily	a.8.1 — Bacterial immunoglobulin/albumin-binding domains
Family Family family	a.8.1.2 — GA module, an albumin-binding domain

CATH v4.4 (7 domains)

Domain ID domain_id	1tf0A01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	246 — Serum Albumin; Chain A, Domain 1
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1tf0A02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	246 — Serum Albumin; Chain A, Domain 1
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1tf0A03
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	246 — Serum Albumin; Chain A, Domain 1
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1tf0A04
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	246 — Serum Albumin; Chain A, Domain 1
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1tf0A05
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	246 — Serum Albumin; Chain A, Domain 1
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1tf0A06
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	246 — Serum Albumin; Chain A, Domain 1
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	1tf0B00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	8 — Helicase, Ruva Protein; domain 3
Homologous superfamily homologous superfamily	40 — Albumin-binding domain

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Unit-cell length a length_a	96.295 Å
Unit-cell length b length_b	134.799 Å
Unit-cell length c length_c	122.463 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	C 2 2 21
Space-group number int_tables_number	20
Crystal system crystal_system	—

Resolution resolution	2.700 Å
Low-resolution limit resolution_low	65.000 Å
R factor r_factor	0.2511
R_work r_work	0.2489
R_free r_free	0.2950

Crystal structure of the GA module complexed with human serum albumin

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

Serum albumin

State in the Current Structure

Other States of the Same Protein in the Database

Peptostreptococcal albumin-binding protein

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

1tf0__assembly_1__model_1

1tf0__assembly_1__model_1 | I(q)

1tf0__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

6. Fold Classification (SCOP + CATH) 11 domains

SCOP 2.08 (4 domains)

CATH v4.4 (7 domains)

7. Citations (1)

Crystal structure of the GA module complexed with human serum albumin

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

Serum albumin

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Peptostreptococcal albumin-binding protein

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

1tf0__assembly_1__model_1

1tf0__assembly_1__model_1 | I(q)

1tf0__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

6. Fold Classification (SCOP + CATH) 11 domains

SCOP 2.08 (4 domains)

CATH v4.4 (7 domains)

7. Citations (1)