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1jd4

Crystal Structure of DIAP1-BIR2

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

APOPTOSIS 1 INHIBITOR

Drosophila melanogaster

UniProt Q24306

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 ZINC ION × 1 Consistent with protein count
2 Protein monomer Monomer Protein 1 ZINC ION × 1 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1jd4 1jd4 3siq 3siq 3siq 3siq 3siq 3siq

8 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1jd5 1jd6 1q4q 1q4q 1q4q 1q4q 1q4q 1q4q 1q4q 1q4q 1q4q 1q4q

16 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name IAP1_DROME
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–124； UniProt 201–324 Author chain B； PDBConstruct 1–124； UniProt 201–324

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_id1jd4
Deposition date deposition_date2001-06-12
Structure title titleCrystal Structure of DIAP1-BIR2
Keywords keywordsIAP, apoptosis, Drosophila, zinc-binding, caspase inhibition; APOPTOSIS
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.

1jd4__assembly_2__model_1

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

Download this curve (.dat)

1jd4__assembly_2__model_1 | I(q)

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

1jd4__assembly_2__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）14.00 Å
Rg (electron density)12.86 Å
Total Rg14.16 Å
Atom count793
Residues96
Excluded volume14038 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1jd4__assembly_1__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1jd4__assembly_2__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_idd1jd4a_
Class classg — Small proteins
Fold Fold foldg.52 — Inhibitor of apoptosis (IAP) repeat
Superfamily Superfamily superfamilyg.52.1 — Inhibitor of apoptosis (IAP) repeat
Family Family familyg.52.1.1 — Inhibitor of apoptosis (IAP) repeat
Domain ID domain_idd1jd4b_
Class classg — Small proteins
Fold Fold foldg.52 — Inhibitor of apoptosis (IAP) repeat
Superfamily Superfamily superfamilyg.52.1 — Inhibitor of apoptosis (IAP) repeat
Family Family familyg.52.1.1 — Inhibitor of apoptosis (IAP) repeat

CATH v4.4 (2 domains)

Domain ID domain_id1jd4A00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1170 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Homologous superfamily homologous superfamily10 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Domain ID domain_id1jd4B00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1170 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
Homologous superfamily homologous superfamily10 — Inhibitor Of Apoptosis Protein (2mihbC-IAP-1); Chain A
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7. Citations (1)