1vwi

STREPTAVIDIN-CYCLO-[5-S-VALERAMIDE-HPQGPPC]K-NH2, PH 1.5, I222 COMPLEX

Method: X-RAY DIFFRACTION

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

STREPTAVIDIN

OrganismNot specified

UniProt P22629

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 8 PEPTIDE LIGAND CONTAINING HPQ × 4 PENTANOIC ACID × 4 water × 8 Consistent with protein count
2 Protein heterocomplex Heteromer Protein 16 PEPTIDE LIGAND CONTAINING HPQ × 8 PENTANOIC ACID × 8 water × 16 Consistent with protein count
3 Protein heterocomplex Heteromer Protein 8 PEPTIDE LIGAND CONTAINING HPQ × 4 PENTANOIC ACID × 4 water × 8 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name SAV_STRAV
Isoform
PDB entities 1
Chains and sequence ranges Author chain B; PDBConstruct 1–123; UniProt 37–159 Author chain D; PDBConstruct 1–123; UniProt 37–159

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_id1vwi
Deposition date deposition_date1997-03-03
Structure title titleSTREPTAVIDIN-CYCLO-[5-S-VALERAMIDE-HPQGPPC]K-NH2, PH 1.5, I222 COMPLEX
Keywords keywords;COMPLEX (BIOTIN-BINDING PROTEIN-PEPTIDE), LINEAR THIOETHER-CONTAINING PEPTIDE ENGINEERED, COMPLEX (BIOTIN-BINDING PROTEIN-PEPTIDE) complex ;; COMPLEX (BIOTIN-BINDING PROTEIN/PEPTIDE)
Experimental Method methodX-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.

1vwi__assembly_3__model_1

Assembly 3 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1vwi__assembly_3__model_1 | I(q)

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

1vwi__assembly_3__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)28.46 Å
Rg (electron density)28.19 Å
Total Rg28.83 Å
Atom count7586
Residues520
Excluded volume68001 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1vwi__assembly_1__model_1 octameric (8) Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1vwi__assembly_2__model_1 hexadecameric (16) Success 4.1.3-1-20251215 (887e7ef) View Download
3 1 1vwi__assembly_3__model_1 octameric (8) Success 4.1.3-1-20251215 (887e7ef) View Download

4. Crystallography and Experiment 4. Crystallography & Experiment

5. Entities and Polymers Entities & Polymers (4)

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1vwib_
Class classb — All beta proteins
Fold Fold foldb.61 — Streptavidin-like
Superfamily Superfamily superfamilyb.61.1 — Avidin/streptavidin
Family Family familyb.61.1.1 — Avidin/streptavidin
Domain ID domain_idd1vwid_
Class classb — All beta proteins
Fold Fold foldb.61 — Streptavidin-like
Superfamily Superfamily superfamilyb.61.1 — Avidin/streptavidin
Family Family familyb.61.1.1 — Avidin/streptavidin

CATH v4.4 (2 domains)

Domain ID domain_id1vwiB00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like
Domain ID domain_id1vwiD00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like

7. Citations (7)