1fak

HUMAN TISSUE FACTOR COMPLEXED WITH COAGULATION FACTOR VIIA INHIBITED WITH A BPTI-MUTANT

Method: X-RAY DIFFRACTION

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

PROTEIN (BLOOD COAGULATION FACTOR VIIA)

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	PROTEIN (SOLUBLE TISSUE FACTOR) × 1 （P13726） PROTEIN (5L15) × 1 （P00974） alpha-D-glucopyranose × 1 alpha-L-fucopyranose × 1 CALCIUM ION × 2 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	FA7_HUMAN
Isoform	—
PDB entities	1, 2
Chains and sequence ranges	Author chain L； PDBConstruct 1–152； UniProt 61–212 Author chain H； PDBConstruct 1–254； UniProt 213–466

PROTEIN (SOLUBLE TISSUE FACTOR)

Homo sapiens

UniProt P13726

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	PROTEIN (BLOOD COAGULATION FACTOR VIIA) × 1 （P08709） PROTEIN (BLOOD COAGULATION FACTOR VIIA) × 1 （P08709） PROTEIN (5L15) × 1 （P00974） alpha-D-glucopyranose × 1 alpha-L-fucopyranose × 1 CALCIUM ION × 2 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TF_HUMAN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain T； PDBConstruct 1–206； UniProt 37–242

PROTEIN (5L15)

OrganismNot specified

UniProt P00974

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 4	PROTEIN (BLOOD COAGULATION FACTOR VIIA) × 1 （P08709） PROTEIN (BLOOD COAGULATION FACTOR VIIA) × 1 （P08709） PROTEIN (SOLUBLE TISSUE FACTOR) × 1 （P13726） alpha-D-glucopyranose × 1 alpha-L-fucopyranose × 1 CALCIUM ION × 2 water × 4	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	BPT1_BOVIN
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain I； PDBConstruct 1–55； UniProt 37–90

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	1fak
Deposition date deposition_date	1998-12-28
Structure title title	HUMAN TISSUE FACTOR COMPLEXED WITH COAGULATION FACTOR VIIA INHIBITED WITH A BPTI-MUTANT
Keywords keywords	;COMPLEX(SERINE PROTEASE-COFACTOR-LIGAND), BLOOD COAGULATION, SERINE PROTEASE, COMPLEX, CO-FACTOR, RECEPTOR ENZYME, INHIBITOR, GLA, EGF, COMPLEX (SERINE PROTEASE-COFACTOR-LIGAND), BLOOD CLOTTING ;; BLOOD CLOTTING
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.

1fak__assembly_1__model_1

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

Download this curve (.dat)

1fak__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1fak__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	30.80 Å
Rg (electron density)	30.85 Å
Total Rg	31.31 Å
Atom count	4739
Residues	597
Excluded volume	84089 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1fak__assembly_1__model_1`	tetrameric （4）	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 (8)

Entity 1 Entity 1 polymer

Description description	PROTEIN (BLOOD COAGULATION FACTOR VIIA)
Molecular weight formula_weight	17487.1 kDa
EC 编号 ec_number	3.4.21.21
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	L
Atom count atom_count	5079

ANAFLEELRPGSLERECKEEQCSFEEAREIFKDAERTKLFWISYSDGDQCASSPCQNGGSCKDQLQSYICFCLPAFEGRNCETHKDDQLICVNENGGCEQYCSDHTGTKRSCRCHEGYSLLADGVSCTPTVEYPCGKIPILEKRNASKPQGR

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Cricetulus griseus

Entity 2 Entity 2 polymer

Description description	PROTEIN (BLOOD COAGULATION FACTOR VIIA)
Molecular weight formula_weight	28103.3 kDa
EC 编号 ec_number	3.4.21.21
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H

IVGGKVCPKGECPWQVLLLVNGAQLCGGTLINTIWVVSAAHCFDKIKNWRNLIAVLGEHDLSEHDGDEQSRRVAQVIIPSTYVPGTTNHDIALLRLHQPVVLTDHVVPLCLPERTFSERTLAFVRFSLVSGWGQLLDRGATALELMVLNVPRLMTQDCLQQSRKVGDSPNITEYMFCAGYSDGSKDSCKGDSGGPHATHYRGTWYLTGIVSWGQGCATVGHFGVYTRVSQYIEWLQKLMRSEPRPGVLLRAPFP

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Cricetulus griseus

Entity 3 Entity 3 polymer

Description description	PROTEIN (SOLUBLE TISSUE FACTOR)
Molecular weight formula_weight	23417.1 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	T

NTVAAYNLTWKSTNFKTILEWEPKPVNQVYTVQISTKSGDWKSKCFYTTDTECDLTDEIVKDVKQTYLARVFSYPAGNVESTGSAGEPLYENSPEFTPYLETNLGQPTIQSFEQVGTKVNVTVEDERTLVRRNNTFLSLRDVFGKDLIYTLYYWKSSSSGKKTAKTNTNEFLIDVDKGENYCFSVQAVIPSRTVNRKSTDSPVECM

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 4 Entity 4 polymer

Description description	PROTEIN (5L15)
Molecular weight formula_weight	6299.2 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I

APDFCLEPPYDGPCRALHLRYFYNAKAGLCQTFYYGGCLAKRNNFESAEDCMRTC

Entity 5 Entity 5 non-polymer

Description description	alpha-D-glucopyranose
Molecular weight formula_weight	180.2 kDa
Source method src_method	man
Copy count entity_count	1

Entity 6 Entity 6 non-polymer

Description description	alpha-L-fucopyranose
Molecular weight formula_weight	164.2 kDa
Source method src_method	man
Copy count entity_count	1

Entity 7 Entity 7 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 8 Entity 8 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	340

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6. Fold Classification (SCOP + CATH) 14 domains

SCOP 2.08 (7 domains)

Domain ID domain_id	d1fakh_
Class class	b — All beta proteins
Fold Fold fold	b.47 — Trypsin-like serine proteases
Superfamily Superfamily superfamily	b.47.1 — Trypsin-like serine proteases
Family Family family	b.47.1.2 — Eukaryotic proteases

Domain ID domain_id	d1faki_
Class class	g — Small proteins
Fold Fold fold	g.8 — BPTI-like
Superfamily Superfamily superfamily	g.8.1 — BPTI-like
Family Family family	g.8.1.1 — Small Kunitz-type inhibitors & BPTI-like toxins

Domain ID domain_id	d1fakl1
Class class	g — Small proteins
Fold Fold fold	g.3 — Knottins (small inhibitors, toxins, lectins)
Superfamily Superfamily superfamily	g.3.11 — EGF/Laminin
Family Family family	g.3.11.1 — EGF-type module

Domain ID domain_id	d1fakl2
Class class	g — Small proteins
Fold Fold fold	g.3 — Knottins (small inhibitors, toxins, lectins)
Superfamily Superfamily superfamily	g.3.11 — EGF/Laminin
Family Family family	g.3.11.1 — EGF-type module

Domain ID domain_id	d1fakl3
Class class	g — Small proteins
Fold Fold fold	g.32 — GLA-domain
Superfamily Superfamily superfamily	g.32.1 — GLA-domain
Family Family family	g.32.1.1 — GLA-domain

Domain ID domain_id	d1fakt1
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.2 — Fibronectin type III
Family Family family	b.1.2.1 — Fibronectin type III

Domain ID domain_id	d1fakt2
Class class	b — All beta proteins
Fold Fold fold	b.1 — Immunoglobulin-like beta-sandwich
Superfamily Superfamily superfamily	b.1.2 — Fibronectin type III
Family Family family	b.1.2.1 — Fibronectin type III

CATH v4.4 (7 domains)

Domain ID domain_id	1fakH01
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	10 — Trypsin-like serine proteases

Domain ID domain_id	1fakH02
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	10 — Thrombin, subunit H
Homologous superfamily homologous superfamily	10 — Trypsin-like serine proteases

Domain ID domain_id	1fakI00
Class class	4 — Few Secondary Structures
Architecture architecture	10 — Irregular
Topology topology	410 — Factor Xa Inhibitor
Homologous superfamily homologous superfamily	10 — Pancreatic trypsin inhibitor Kunitz domain

Domain ID domain_id	1fakL01
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	25 — Laminin
Homologous superfamily homologous superfamily	10 — Laminin

Domain ID domain_id	1fakL02
Class class	2 — Mainly Beta
Architecture architecture	10 — Ribbon
Topology topology	25 — Laminin
Homologous superfamily homologous superfamily	10 — Laminin

Domain ID domain_id	1fakT01
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

Domain ID domain_id	1fakT02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	10 — Immunoglobulins

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Unit-cell length a length_a	63.490 Å
Unit-cell length b length_b	190.000 Å
Unit-cell length c length_c	175.300 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	2.100 Å
Low-resolution limit resolution_low	9.000 Å
R factor r_factor	0.2370
R_work r_work	—
R_free r_free	—

HUMAN TISSUE FACTOR COMPLEXED WITH COAGULATION FACTOR VIIA INHIBITED WITH A BPTI-MUTANT

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

PROTEIN (BLOOD COAGULATION FACTOR VIIA)

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

PROTEIN (SOLUBLE TISSUE FACTOR)

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

PROTEIN (5L15)

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

1fak__assembly_1__model_1

1fak__assembly_1__model_1 | I(q)

1fak__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 (8)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Source Source

Entity 4 Entity 4 polymer

Polymer Polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 non-polymer

Entity 8 Entity 8 water

6. Fold Classification (SCOP + CATH) 14 domains

SCOP 2.08 (7 domains)

CATH v4.4 (7 domains)

7. Citations (1)