← Back to search
1i84

CRYO-EM STRUCTURE OF THE HEAVY MEROMYOSIN SUBFRAGMENT OF CHICKEN GIZZARD SMOOTH MUSCLE MYOSIN WITH REGULATORY LIGHT CHAIN IN THE DEPHOSPHORYLATED STATE. ONLY C ALPHAS PROVIDED FOR REGULATORY LIGHT CHAIN. ONLY BACKBONE ATOMS PROVIDED FOR S2 FRAGMENT.

Method: ELECTRON CRYSTALLOGRAPHY
▼

1. Protein Identity and Related Structures Protein Identity & Related Structures

SMOOTH MUSCLE MYOSIN HEAVY CHAIN

Gallus gallus

UniProt P10587

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 6 SMOOTH MUSCLE MYOSIN ESSENTIAL LIGHT CHAIN × 2 SMOOTH MUSCLE MYOSIN REGULATORY LIGHT CHAIN × 2 （P02609） Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1br2 1br2 1br2 1br2 1br2 1br2 5m05

7 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1br1 1br1 1br1 1br1 1br4 1br4 1br4 1br4 1i84 3dtp 3dtp 3dtp

16 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name MYSG_CHICK
Isoform —
PDB entities 1
Chains and sequence ranges Author chain S； PDBConstruct 1–1174； UniProt 1–1174 Author chain V； PDBConstruct 1–1174； UniProt 1–1174

SMOOTH MUSCLE MYOSIN REGULATORY LIGHT CHAIN

Gallus gallus

UniProt P02609

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 6 SMOOTH MUSCLE MYOSIN HEAVY CHAIN × 2 （P10587） SMOOTH MUSCLE MYOSIN ESSENTIAL LIGHT CHAIN × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
2w4a

1 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1i84 1m8q 1mvw 1o18 1o19 1o1a 1o1b 1o1c 1o1d 1o1e 1o1f 1o1g

15 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name MLRS_CHICK
Isoform —
PDB entities 3
Chains and sequence ranges Author chain U； PDBConstruct 1–166； UniProt 1–166 Author chain Z； PDBConstruct 1–166； UniProt 1–166

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id1i84
Deposition date deposition_date2001-03-12
Structure title titleCRYO-EM STRUCTURE OF THE HEAVY MEROMYOSIN SUBFRAGMENT OF CHICKEN GIZZARD SMOOTH MUSCLE MYOSIN WITH REGULATORY LIGHT CHAIN IN THE DEPHOSPHORYLATED STATE. ONLY C ALPHAS PROVIDED FOR REGULATORY LIGHT CHAIN. ONLY BACKBONE ATOMS PROVIDED FOR S2 FRAGMENT.
Keywords keywords;muscle protein, smooth muscle, myosin subfragment 2, heavy meromyosin, essential light chain, regulatory light chain, motor protein, coiled-coil, CONTRACTILE PROTEIN ;; CONTRACTILE PROTEIN
Experimental Method methodELECTRON CRYSTALLOGRAPHY
▼

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.

1i84__assembly_1__model_1

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

Download this curve (.dat)

1i84__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1i84__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）54.89 Å
Rg (electron density)54.63 Å
Total Rg59.80 Å
Atom count16304
Residues2106
Excluded volume325900 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1i84__assembly_1__model_1 hexameric （6） Success 4.1.3-1-20251215 (887e7ef) View Download
▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (3)

▼

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (6 domains)

Domain ID domain_idd1i84s_
Class classi — Low resolution protein structures
Fold Fold foldi.15 — Muscle protein complexes
Superfamily Superfamily superfamilyi.15.1 — Muscle protein complexes
Family Family familyi.15.1.1 — Muscle protein complexes
Domain ID domain_idd1i84t_
Class classi — Low resolution protein structures
Fold Fold foldi.15 — Muscle protein complexes
Superfamily Superfamily superfamilyi.15.1 — Muscle protein complexes
Family Family familyi.15.1.1 — Muscle protein complexes
Domain ID domain_idd1i84u_
Class classi — Low resolution protein structures
Fold Fold foldi.15 — Muscle protein complexes
Superfamily Superfamily superfamilyi.15.1 — Muscle protein complexes
Family Family familyi.15.1.1 — Muscle protein complexes
Domain ID domain_idd1i84v_
Class classi — Low resolution protein structures
Fold Fold foldi.15 — Muscle protein complexes
Superfamily Superfamily superfamilyi.15.1 — Muscle protein complexes
Family Family familyi.15.1.1 — Muscle protein complexes
Domain ID domain_idd1i84w_
Class classi — Low resolution protein structures
Fold Fold foldi.15 — Muscle protein complexes
Superfamily Superfamily superfamilyi.15.1 — Muscle protein complexes
Family Family familyi.15.1.1 — Muscle protein complexes
Domain ID domain_idd1i84z_
Class classi — Low resolution protein structures
Fold Fold foldi.15 — Muscle protein complexes
Superfamily Superfamily superfamilyi.15.1 — Muscle protein complexes
Family Family familyi.15.1.1 — Muscle protein complexes
▶

7. Citations (5)