1j5j

Solution structure of HERG-specific scorpion toxin BeKm-1

Method: SOLUTION NMR
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1. Protein Identity and Related Structures Protein Identity & Related Structures

BeKm-1 toxin

Mesobuthus eupeus

UniProt Q9BKB7

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 No other associated polymer Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name SEKM_BUTEU
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–36; UniProt 22–57

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_id1j5j
Deposition date deposition_date2002-04-16
Structure title titleSolution structure of HERG-specific scorpion toxin BeKm-1
Keywords keywordsALPHA-BETA MOTIF, CYSTEINE-KNOT MOTIF, TOXIN; TOXIN
Experimental Method methodSOLUTION NMR
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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.

1j5j__assembly_1__model_1

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

Download this curve (.dat)

1j5j__assembly_1__model_1 | I(q)

10-2 10-1 104 105 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1j5j__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)9.93 Å
Rg (electron density)8.72 Å
Total Rg10.21 Å
Atom count550
Residues36
Excluded volume4971 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1j5j__assembly_1__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 (1)

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6. Fold Classification (SCOP + CATH) 1 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1j5ja_
Class classg — Small proteins
Fold Fold foldg.3 — Knottins (small inhibitors, toxins, lectins)
Superfamily Superfamily superfamilyg.3.7 — Scorpion toxin-like
Family Family familyg.3.7.2 — Short-chain scorpion toxins
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7. Citations (2)