2r3c
Structure of the gp41 N-peptide in complex with the HIV entry inhibitor PIE1
1. Protein Identity and Related Structures Protein Identity & Related Structures
No usable UniProt protein identity is available for this entry.
The relationship tables retain this entry's assembly and composition data, but cross-PDB links for the same protein cannot be established reliably without a unified protein identity.
Assembly Composition of the Current Entry
| Assembly | Physical composition | Protein state | 蛋白 / DNA / RNA / 其他Polymer | Data consistency |
|---|---|---|---|---|
| 1 | Protein heterocomplex | Heteromer | 6 / 0 / 0 / 0 | Consistent with protein count |
| 2 | Protein heterocomplex | Heteromer | 6 / 0 / 0 / 0 | Consistent with protein count |
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.
2. Structure Basics 2. Structure Basics
| Entry ID entry_id | 2r3c |
| Deposition date deposition_date | 2007-08-29 |
| Structure title title | Structure of the gp41 N-peptide in complex with the HIV entry inhibitor PIE1 |
| Keywords keywords | HIV, inhibitor, viral entry, PIE, VIRAL PROTEIN, VIRAL PROTEIN-VIRAL PROTEIN INHIBITOR complex; VIRAL PROTEIN/VIRAL PROTEIN INHIBITOR |
| Experimental Method method | X-RAY DIFFRACTION |
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.
2r3c__assembly_1__model_1
Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)
2r3c__assembly_1__model_1 | I(q)
2r3c__assembly_1__model_1 | P(r) · Pending
| Rg（Guinier） | 22.46 Å |
| Rg (electron density) | 21.72 Å |
| Total Rg | 22.78 Å |
| Atom count | 1508 |
| Residues | 138 |
| Excluded volume | 27783 ų |
| Maximum q | 0.500 Å⁻¹ |
4. Crystallography and Experiment 4. Crystallography & Experiment
5. Entities and Polymers Entities & Polymers (5)
6. Fold Classification (SCOP + CATH) 3 domains
SCOP 2.08 (1 domains)
| Domain ID domain_id | d2r3ca1 |
| Class class | h — Coiled coil proteins |
| Fold Fold fold | h.3 — Stalk segment of viral fusion proteins |
| Superfamily Superfamily superfamily | h.3.2 — Virus ectodomain |
| Family Family family | h.3.2.1 — Virus ectodomain |
CATH v4.4 (2 domains)
| Domain ID domain_id | 2r3cA00 |
| Class class | 1 — Mainly Alpha |
| Architecture architecture | 20 — Up-down Bundle |
| Topology topology | 5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces |
| Homologous superfamily homologous superfamily | 170 — |
| Domain ID domain_id | 2r3cB00 |
| Class class | 1 — Mainly Alpha |
| Architecture architecture | 20 — Up-down Bundle |
| Topology topology | 5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces |
| Homologous superfamily homologous superfamily | 170 — |