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1g6x

ULTRA HIGH RESOLUTION STRUCTURE OF BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT WITH ALTERED BINDING LOOP SEQUENCE

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

PANCREATIC TRYPSIN INHIBITOR

Bos taurus

UniProt P00974

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 SULFATE ION × 8 1,2-ETHANEDIOL × 2 water × 1 Consistent with protein count
2 Protein homooligomer Homooligomer Protein 2 SULFATE ION × 16 1,2-ETHANEDIOL × 4 water × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1aal 1aal 1bpi 1bpt 1bti 1fan 1g6x 1jv8 1jv9 1k6u 1ld5 1ld6

59 assemblies; showing the first 12

Homodimer
1g6x 1k09 2zjx 2zvx

4 assemblies

Homotetramer

None

Other homooligomers
1b0c 1bhc 1bz5 2hex 2hex 3ldi 3ldm 6f1f

8 assemblies

Heteromeric or nucleic-acid complex
1brb 1bth 1bth 1bzx 1cbw 1cbw 1cbw 1co7 1d0d 1eaw 1eaw 1ejm

195 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name BPT1_BOVIN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–58； UniProt 36–93

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_id1g6x
Deposition date deposition_date2000-11-08
Structure title titleULTRA HIGH RESOLUTION STRUCTURE OF BOVINE PANCREATIC TRYPSIN INHIBITOR (BPTI) MUTANT WITH ALTERED BINDING LOOP SEQUENCE
Keywords keywordsSERINE PROTEASE INHIBITOR, HYDROLASE INHIBITOR; HYDROLASE INHIBITOR
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.

1g6x__assembly_2__model_1

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

Download this curve (.dat)

1g6x__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.

1g6x__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）15.82 Å
Rg (electron density)14.82 Å
Total Rg16.00 Å
Atom count991
Residues116
Excluded volume17059 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1g6x__assembly_1__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1g6x__assembly_2__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) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1g6xa_
Class classg — Small proteins
Fold Fold foldg.8 — BPTI-like
Superfamily Superfamily superfamilyg.8.1 — BPTI-like
Family Family familyg.8.1.1 — Small Kunitz-type inhibitors & BPTI-like toxins

CATH v4.4 (1 domains)

Domain ID domain_id1g6xA00
Class class4 — Few Secondary Structures
Architecture architecture10 — Irregular
Topology topology410 — Factor Xa Inhibitor
Homologous superfamily homologous superfamily10 — Pancreatic trypsin inhibitor Kunitz domain
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7. Citations (6)