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4cpb

CRYSTAL STRUCTURE OF LECA IN COMPLEX WITH A DIVALENT GALACTOSIDE AT 1. 57 ANGSTROM IN MAGNESIUM

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

PA-I GALACTOPHILIC LECTIN

PSEUDOMONAS AERUGINOSA

UniProt Q05097

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 4 CALCIUM ION × 4 beta-D-galactopyranose × 4 (4S)-N-ethyl-4-{[N-methyl-3-(1-{2-[(4-sulfanylbenzoyl)amino]ethyl}-1H-1,2,3-triazol-4-yl)-L-alanyl]amino}-L-prolinamide × 4 DI(HYDROXYETHYL)ETHER × 1 1,2-ETHANEDIOL × 1 NONAETHYLENE GLYCOL × 1 CHLORIDE ION × 1 water × 4 Consistent with protein count
2 Protein homooligomer Homooligomer Protein 2 CALCIUM ION × 2 beta-D-galactopyranose × 2 (4S)-N-ethyl-4-{[N-methyl-3-(1-{2-[(4-sulfanylbenzoyl)amino]ethyl}-1H-1,2,3-triazol-4-yl)-L-alanyl]amino}-L-prolinamide × 2 DI(HYDROXYETHYL)ETHER × 1 1,2-ETHANEDIOL × 1 water × 2 Consistent with protein count
3 Protein homooligomer Homooligomer Protein 2 CALCIUM ION × 2 beta-D-galactopyranose × 2 (4S)-N-ethyl-4-{[N-methyl-3-(1-{2-[(4-sulfanylbenzoyl)amino]ethyl}-1H-1,2,3-triazol-4-yl)-L-alanyl]amino}-L-prolinamide × 2 NONAETHYLENE GLYCOL × 1 CHLORIDE ION × 1 water × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
3zyb 3zyb 3zyb 3zyb 3zyb 4cp9 4cp9 4cp9 4cp9 4yw7 4yw7 4yw7

25 assemblies; showing the first 12

Homodimer
3zyf 3zyf 3zyh 4a6s 4a6s 4cpb 4cpb 4lk7 4lk7 6yoh 6yoh

11 assemblies

Homotetramer
1l7l 1oko 1uoj 4al9 4cp9 4cpb 4ljh 4lk6 4lk6 4lk6 4lk7 4yw6

26 assemblies; showing the first 12

Other homooligomers

None

Heteromeric or nucleic-acid complex
2vxj 2vxj 2vxj 2vxj 2vxj 2vxj 2vxj 2vxj 2vxj 2vxj 2vxj 2vxj

40 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name Q05097_PSEAE
Isoform —
PDB entities 1, 2
Chains and sequence ranges Author chain A； PDBConstruct 1–121； UniProt 2–122 Author chain B； PDBConstruct 1–121； UniProt 2–122 Author chain C； PDBConstruct 1–121； UniProt 2–122 Author chain D； PDBConstruct 1–121； UniProt 2–122

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_id4cpb
Deposition date deposition_date2014-02-04
Structure title titleCRYSTAL STRUCTURE OF LECA IN COMPLEX WITH A DIVALENT GALACTOSIDE AT 1. 57 ANGSTROM IN MAGNESIUM
Keywords keywordsSUGAR BINDING PROTEIN, GALACTOSE BINDING, SUGAR BASED INHIBITOR; SUGAR BINDING PROTEIN
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.

4cpb__assembly_3__model_1

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

Download this curve (.dat)

4cpb__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.

4cpb__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）19.23 Å
Rg (electron density)18.13 Å
Total Rg19.08 Å
Atom count1887
Residues239
Excluded volume33235 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 4cpb__assembly_1__model_1 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 4cpb__assembly_2__model_1 dimeric （2） Success 4.1.3-1-20251215 (887e7ef) View Download
3 1 4cpb__assembly_3__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 (10)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd4cpba_
Class classb — All beta proteins
Fold Fold foldb.18 — Galactose-binding domain-like
Superfamily Superfamily superfamilyb.18.1 — Galactose-binding domain-like
Family Family familyb.18.1.16 — PA-IL, galactose-binding lectin 1
Domain ID domain_idd4cpbb_
Class classb — All beta proteins
Fold Fold foldb.18 — Galactose-binding domain-like
Superfamily Superfamily superfamilyb.18.1 — Galactose-binding domain-like
Family Family familyb.18.1.16 — PA-IL, galactose-binding lectin 1
Domain ID domain_idd4cpbc_
Class classb — All beta proteins
Fold Fold foldb.18 — Galactose-binding domain-like
Superfamily Superfamily superfamilyb.18.1 — Galactose-binding domain-like
Family Family familyb.18.1.16 — PA-IL, galactose-binding lectin 1
Domain ID domain_idd4cpbd_
Class classb — All beta proteins
Fold Fold foldb.18 — Galactose-binding domain-like
Superfamily Superfamily superfamilyb.18.1 — Galactose-binding domain-like
Family Family familyb.18.1.16 — PA-IL, galactose-binding lectin 1

CATH v4.4 (4 domains)

Domain ID domain_id4cpbA00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily430 — Galactose-binding lectin
Domain ID domain_id4cpbB00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily430 — Galactose-binding lectin
Domain ID domain_id4cpbC00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily430 — Galactose-binding lectin
Domain ID domain_id4cpbD00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology120 — Jelly Rolls
Homologous superfamily homologous superfamily430 — Galactose-binding lectin
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7. Citations (1)