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1cdl

TARGET ENZYME RECOGNITION BY CALMODULIN: 2.4 ANGSTROMS STRUCTURE OF A CALMODULIN-PEPTIDE COMPLEX

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

CALMODULIN

Homo sapiens

UniProt P62158

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 2 CALCIUM/CALMODULIN-DEPENDENT PROTEIN KINASE TYPE II ALPHA CHAIN × 1 （P11799） CALCIUM ION × 4 water × 2 Consistent with protein count
2 Protein heterocomplex Heteromer Protein 2 CALCIUM/CALMODULIN-DEPENDENT PROTEIN KINASE TYPE II ALPHA CHAIN × 1 （P11799） CALCIUM ION × 4 water × 2 Consistent with protein count
3 Protein heterocomplex Heteromer Protein 2 CALCIUM/CALMODULIN-DEPENDENT PROTEIN KINASE TYPE II ALPHA CHAIN × 1 （P11799） CALCIUM ION × 4 water × 2 Consistent with protein count
4 Protein heterocomplex Heteromer Protein 2 CALCIUM/CALMODULIN-DEPENDENT PROTEIN KINASE TYPE II ALPHA CHAIN × 1 （P11799） CALCIUM ION × 4 water × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1cll 1ctr 1j7o 1j7p 1sw8 1y6w 2hf5 2k0e 2k0j 2k61 2kuh 2lqp

22 assemblies; showing the first 12

Homodimer
3uct 3uct 3ucw 3ucw 3ucy 4bw7

6 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1cdl 1cdl 1cdl 1cdl 1iwq 1iwq 1l7z 1pk0 1pk0 1pk0 1pk0 1s26

149 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name CALM_HUMAN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–147； UniProt 1–147 Author chain B； PDBConstruct 1–147； UniProt 1–147 Author chain C； PDBConstruct 1–147； UniProt 1–147 Author chain D； PDBConstruct 1–147； UniProt 1–147

CALCIUM/CALMODULIN-DEPENDENT PROTEIN KINASE TYPE II ALPHA CHAIN

OrganismNot specified

UniProt P11799

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 2 CALMODULIN × 1 （P62158） CALCIUM ION × 4 water × 2 Consistent with protein count
2 Protein heterocomplex Heteromer Protein 2 CALMODULIN × 1 （P62158） CALCIUM ION × 4 water × 2 Consistent with protein count
3 Protein heterocomplex Heteromer Protein 2 CALMODULIN × 1 （P62158） CALCIUM ION × 4 water × 2 Consistent with protein count
4 Protein heterocomplex Heteromer Protein 2 CALMODULIN × 1 （P62158） CALCIUM ION × 4 water × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1cdl 1cdl 1cdl 1cdl 1qtx 2o5g 3evu 3o77 3o78 3o78 3o78 9u9d

12 assemblies

View Construct and Data Evidence
UniProt name MYLK_CHICK
Isoform —
PDB entities 2
Chains and sequence ranges Author chain E； PDBConstruct 1–20； UniProt 1730–1749 Author chain F； PDBConstruct 1–20； UniProt 1730–1749 Author chain G； PDBConstruct 1–20； UniProt 1730–1749 Author chain H； PDBConstruct 1–20； UniProt 1730–1749

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_id1cdl
Deposition date deposition_date1993-10-08
Structure title titleTARGET ENZYME RECOGNITION BY CALMODULIN: 2.4 ANGSTROMS STRUCTURE OF A CALMODULIN-PEPTIDE COMPLEX
Keywords keywordsCALCIUM-BINDING PROTEIN; CALCIUM-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.

1cdl__assembly_1__model_1

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

Download this curve (.dat)

1cdl__assembly_1__model_1 | I(q)

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

1cdl__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）16.83 Å
Rg (electron density)15.52 Å
Total Rg16.43 Å
Atom count1257
Residues161
Excluded volume22043 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1cdl__assembly_1__model_1 dimeric （2） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1cdl__assembly_2__model_1 dimeric （2） Success 4.1.3-1-20251215 (887e7ef) View Download
3 1 1cdl__assembly_3__model_1 dimeric （2） Success 4.1.3-1-20251215 (887e7ef) View Download
4 1 1cdl__assembly_4__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) 12 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1cdla_
Class classa — All alpha proteins
Fold Fold folda.39 — EF Hand-like
Superfamily Superfamily superfamilya.39.1 — EF-hand
Family Family familya.39.1.5 — Calmodulin-like
Domain ID domain_idd1cdlb_
Class classa — All alpha proteins
Fold Fold folda.39 — EF Hand-like
Superfamily Superfamily superfamilya.39.1 — EF-hand
Family Family familya.39.1.5 — Calmodulin-like
Domain ID domain_idd1cdlc_
Class classa — All alpha proteins
Fold Fold folda.39 — EF Hand-like
Superfamily Superfamily superfamilya.39.1 — EF-hand
Family Family familya.39.1.5 — Calmodulin-like
Domain ID domain_idd1cdld_
Class classa — All alpha proteins
Fold Fold folda.39 — EF Hand-like
Superfamily Superfamily superfamilya.39.1 — EF-hand
Family Family familya.39.1.5 — Calmodulin-like

CATH v4.4 (8 domains)

Domain ID domain_id1cdlA01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology238 — Recoverin; domain 1
Homologous superfamily homologous superfamily10 — EF-hand
Domain ID domain_id1cdlA02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology238 — Recoverin; domain 1
Homologous superfamily homologous superfamily10 — EF-hand
Domain ID domain_id1cdlB01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology238 — Recoverin; domain 1
Homologous superfamily homologous superfamily10 — EF-hand
Domain ID domain_id1cdlB02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology238 — Recoverin; domain 1
Homologous superfamily homologous superfamily10 — EF-hand
Domain ID domain_id1cdlC01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology238 — Recoverin; domain 1
Homologous superfamily homologous superfamily10 — EF-hand
Domain ID domain_id1cdlC02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology238 — Recoverin; domain 1
Homologous superfamily homologous superfamily10 — EF-hand
Domain ID domain_id1cdlD01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology238 — Recoverin; domain 1
Homologous superfamily homologous superfamily10 — EF-hand
Domain ID domain_id1cdlD02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology238 — Recoverin; domain 1
Homologous superfamily homologous superfamily10 — EF-hand
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7. Citations (1)