1yv3

The structural basis of blebbistatin inhibition and specificity for myosin II

Method: X-RAY DIFFRACTION Dmax: 92.2 Å Quality: REASONABLE

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

Myosin II heavy chain

OrganismNot specified

UniProt P08799

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 1–762 Not recorded MG MAGNESIUM ION × 2 VO4 VANADATE ION × 1 ADP ADENOSINE-5'-DIPHOSPHATE × 1 BIT (-)-1-PHENYL-1,2,3,4-TETRAHYDRO-4-HYDROXYPYRROLO[2,3-B]-7-METHYLQUINOLIN-4-ONE × 1 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;278 K;100 mM MOPS (pH 7.0), 250 mM MgCl2, 11% PEG 8000, 1 mM TCEP, 2 mM Thymol, 1 mM MgCl2, 2 mM ADP, and 3 mM sodium vanadate, VAPOR DIFFUSION, HANGING DROP, temperature 278K Resolution 2.00 Å R-free 0.215

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

48 other PDB entries and 52 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name MYS2_DICDI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–762; UniProt 1–762

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.

SAXS scattering curve SAXS Profile

SAXS profile for 1yv3

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1yv3
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1yv3
Deposition date deposition_date2005-02-14
Structure title titleThe structural basis of blebbistatin inhibition and specificity for myosin II
Keywords keywordsmyosin, blebbistatin, myosin II inhibitor, myosin-inhibitor complex, metastable state, CONTRACTILE PROTEIN; CONTRACTILE PROTEIN
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier28.59
Radius of gyration Rg (electron density) rg_electron27.77
Forward intensity I(0) i096867400.00
Molecular weight molecular_weight78147.0 kDa
Excluded volume excluded_volume97889 ų
Envelope volume envelope_volume122000 ų
Hydration-shell volume shell_volume36195 ų
Envelope diameter envelope_diameter98.5
Shell Rg shell_rg35.38
Envelope Rg envelope_rg28.32
Shape Rg shape_rg27.78
Total Rg total_rg28.46
Total atoms total_atoms5521
Residues n_residues703
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax92.2
Rg (real space) rg_real28.58
Rg uncertainty (real space) rg_real_error0.63
I(0) (real space) i0_real9.6870e+07
I(0) uncertainty (real space) i0_real_error1.4250e+06
Rg (reciprocal space) rg_reciprocal28.59
I(0) (reciprocal space) i0_reciprocal96870000.0000
Solution quality estimate total_estimate0.6880
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary33.5
Skewness Skewness skewness0.385
Kurtosis Kurtosis kurtosis-0.213
Angular range angular_range— – 0.2750 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha16520000.0000
Real-space data points n_real_points56
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.876; Stabil: 1.000; Sysdev: 0.156; Positv: 1.000; Valcen: 0.997; Smooth: 0.848

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

7. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id1yv3A01
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily530

8. Citations (1)

9. Files and Curves (10)