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1bj3

CRYSTAL STRUCTURE OF COAGULATION FACTOR IX-BINDING PROTEIN (IX-BP) FROM VENOM OF HABU SNAKE WITH A HETERODIMER OF C-TYPE LECTIN DOMAINS

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

PROTEIN (COAGULATION FACTOR IX-BINDING PROTEIN B)

OrganismNot specified

UniProt P23807

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 2 PROTEIN (COAGULATION FACTOR IX-BINDING PROTEIN A) × 1 CALCIUM ION × 2 water × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1bj3 1ixx 1ixx 1ixx 1ixx 1j34 1j35 1x2t 1x2t 1x2w 1x2w

11 assemblies

View Construct and Data Evidence
UniProt name IXB_TRIFL
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B； PDBConstruct 1–123； UniProt 24–146

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_id1bj3
Deposition date deposition_date1998-07-02
Structure title titleCRYSTAL STRUCTURE OF COAGULATION FACTOR IX-BINDING PROTEIN (IX-BP) FROM VENOM OF HABU SNAKE WITH A HETERODIMER OF C-TYPE LECTIN DOMAINS
Keywords keywordsCOAGULATION FACTOR IX-BINDING, HETERODIMER, VENOM, HABU SNAKE, C-TYPE LECTIN SUPERFAMILY, COLLAGEN BINDING PROTEIN; COLLAGEN BINDING PROTEIN
Experimental Method methodX-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.

1bj3__assembly_1__model_1

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

Download this curve (.dat)

1bj3__assembly_1__model_1 | I(q)

10-2 10-1 105 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1bj3__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg（Guinier）22.04 Å
Rg (electron density)21.41 Å
Total Rg22.11 Å
Atom count2049
Residues252
Excluded volume35842 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1bj3__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)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1bj3a_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.169 — C-type lectin-like
Superfamily Superfamily superfamilyd.169.1 — C-type lectin-like
Family Family familyd.169.1.1 — C-type lectin domain
Domain ID domain_idd1bj3b_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.169 — C-type lectin-like
Superfamily Superfamily superfamilyd.169.1 — C-type lectin-like
Family Family familyd.169.1.1 — C-type lectin domain

CATH v4.4 (2 domains)

Domain ID domain_id1bj3A00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology100 — Mannose-Binding Protein A; Chain A
Homologous superfamily homologous superfamily10 — Mannose-Binding Protein A, subunit A
Domain ID domain_id1bj3B00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology100 — Mannose-Binding Protein A; Chain A
Homologous superfamily homologous superfamily10 — Mannose-Binding Protein A, subunit A
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7. Citations (3)