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1m7l

Solution Structure of the Coiled-Coil Trimerization Domain from Lung Surfactant Protein D

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

Pulmonary surfactant-associated protein D

Homo sapiens

UniProt P35247

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 3 No other associated polymer Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers
1b08 1m7l 1pw9 2ggx 2orj 2ork 2os9 2ria 2rib 2rid 2rie 3dbz

23 assemblies; showing the first 12

Heteromeric or nucleic-acid complex
1pwb 2ggu 2ric 3g83 3g84 4e52 4m18 4m18 4m18 4m18 5oxr 5oxs

14 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name SFTPD_HUMAN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–38； UniProt 220–257 Author chain B； PDBConstruct 1–38； UniProt 220–257 Author chain C； PDBConstruct 1–38； UniProt 220–257

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_id1m7l
Deposition date deposition_date2002-07-22
Structure title titleSolution Structure of the Coiled-Coil Trimerization Domain from Lung Surfactant Protein D
Keywords keywordscoiled coil, lung surfactant protein, trimer, ambiguous distance restraints, NMR-spectroscopy, SUGAR BINDING PROTEIN; SUGAR BINDING PROTEIN
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.

1m7l__assembly_1__model_17

Assembly 1 · Model 17 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1m7l__assembly_1__model_17 | I(q)

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

1m7l__assembly_1__model_17 | 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）18.30 Å
Rg (electron density)18.14 Å
Total Rg19.04 Å
Atom count1860
Residues120
Excluded volume16483 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1m7l__assembly_1__model_1 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 2 1m7l__assembly_1__model_2 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 3 1m7l__assembly_1__model_3 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 4 1m7l__assembly_1__model_4 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 5 1m7l__assembly_1__model_5 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 6 1m7l__assembly_1__model_6 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 7 1m7l__assembly_1__model_7 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 8 1m7l__assembly_1__model_8 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 9 1m7l__assembly_1__model_9 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 10 1m7l__assembly_1__model_10 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 11 1m7l__assembly_1__model_11 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 12 1m7l__assembly_1__model_12 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 13 1m7l__assembly_1__model_13 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 14 1m7l__assembly_1__model_14 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 15 1m7l__assembly_1__model_15 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 16 1m7l__assembly_1__model_16 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 17 1m7l__assembly_1__model_17 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 18 1m7l__assembly_1__model_18 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 19 1m7l__assembly_1__model_19 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 20 1m7l__assembly_1__model_20 trimeric （3） Success 4.1.3-1-20251215 (887e7ef) View Download
1 21 1m7l__assembly_1__model_21 trimeric （3） 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) 9 domains

SCOP 2.08 (6 domains)

Domain ID domain_idd1m7la1
Class classh — Coiled coil proteins
Fold Fold foldh.1 — Parallel coiled-coil
Superfamily Superfamily superfamilyh.1.1 — Triple coiled coil domain of C-type lectins
Family Family familyh.1.1.1 — Triple coiled coil domain of C-type lectins
Domain ID domain_idd1m7la2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd1m7lb1
Class classh — Coiled coil proteins
Fold Fold foldh.1 — Parallel coiled-coil
Superfamily Superfamily superfamilyh.1.1 — Triple coiled coil domain of C-type lectins
Family Family familyh.1.1.1 — Triple coiled coil domain of C-type lectins
Domain ID domain_idd1m7lb2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd1m7lc1
Class classh — Coiled coil proteins
Fold Fold foldh.1 — Parallel coiled-coil
Superfamily Superfamily superfamilyh.1.1 — Triple coiled coil domain of C-type lectins
Family Family familyh.1.1.1 — Triple coiled coil domain of C-type lectins
Domain ID domain_idd1m7lc2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (3 domains)

Domain ID domain_id1m7lA00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily360 — SFTPD helical domain
Domain ID domain_id1m7lB00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily360 — SFTPD helical domain
Domain ID domain_id1m7lC00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily360 — SFTPD helical domain
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7. Citations (1)