2ftx

Crystal structure of the yeast kinetochore Spc24/Spc25 globular domain

Method: X-RAY DIFFRACTION Dmax: 54.6 Å Quality: GOOD

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

Hypothetical 25.2 kDa protein in AFG3-SEB2 intergenic region

Saccharomyces cerevisiae

UniProt P40014

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 133–221 Fragment:Spc25p globular domain Non-standard monomer:Yes (specific site not provided by mmCIF) Hypothetical 24.6 kDa protein in ILV2-ADE17 intergenic region × 1 (Q04477) NA SODIUM ION × 1 PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 10.5;293 K;0.1 M CAPS, pH 10.5, 1.2 M NaH2PO4/0.8 M K2HPO4, 0.2 M Li2SO4, VAPOR DIFFUSION, HANGING DROP, temperature 293K, pH 10.50 Resolution 1.90 Å R-free 0.226

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.

9 other PDB entries and 11 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name YEK8_YEAST
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 2–90; UniProt 133–221

Hypothetical 24.6 kDa protein in ILV2-ADE17 intergenic region

Saccharomyces cerevisiae

UniProt Q04477

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 154–213 Fragment:Spc24p globular domain Non-standard monomer:Yes (specific site not provided by mmCIF) Hypothetical 25.2 kDa protein in AFG3-SEB2 intergenic region × 1 (P40014) NA SODIUM ION × 1 PO4 PHOSPHATE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:pH 10.5;293 K;0.1 M CAPS, pH 10.5, 1.2 M NaH2PO4/0.8 M K2HPO4, 0.2 M Li2SO4, VAPOR DIFFUSION, HANGING DROP, temperature 293K, pH 10.50 Resolution 1.90 Å R-free 0.226

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.

9 other PDB entries and 11 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name YM06_YEAST
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 5–64; UniProt 154–213

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 2ftx

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2ftx
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2. Structure Basics 2. Structure Basics

Entry ID entry_id2ftx
Deposition date deposition_date2006-01-25
Structure title titleCrystal structure of the yeast kinetochore Spc24/Spc25 globular domain
Keywords keywordsalpha-beta, complex, coiled-coil, structural protein, protein binding; structural protein, protein binding
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier16.94
Radius of gyration Rg (electron density) rg_electron15.37
Forward intensity I(0) i05731520.00
Molecular weight molecular_weight17032.0 kDa
Excluded volume excluded_volume21226 ų
Envelope volume envelope_volume24699 ų
Hydration-shell volume shell_volume13703 ų
Envelope diameter envelope_diameter52.7
Shell Rg shell_rg21.04
Envelope Rg envelope_rg15.65
Shape Rg shape_rg15.37
Total Rg total_rg16.46
Total atoms total_atoms1188
Residues n_residues146
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 dmax54.6
Rg (real space) rg_real16.85
Rg uncertainty (real space) rg_real_error0.27
I(0) (real space) i0_real5.7320e+06
I(0) uncertainty (real space) i0_real_error6.5070e+04
Rg (reciprocal space) rg_reciprocal16.86
I(0) (reciprocal space) i0_reciprocal5732000.0000
Solution quality estimate total_estimate0.8904
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary21.6
Skewness Skewness skewness0.149
Kurtosis Kurtosis kurtosis-0.379
Angular range angular_range— – 0.4700 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha769000.0000
Real-space data points n_real_points77
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.860; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.998; Smooth: 0.995

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd2ftxa1
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.300 — Kinetochore globular domain-like
Superfamily Superfamily superfamilyd.300.1 — Kinetochore globular domain
Family Family familyd.300.1.1 — Spc25-like
Domain ID domain_idd2ftxb1
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.300 — Kinetochore globular domain-like
Superfamily Superfamily superfamilyd.300.1 — Kinetochore globular domain
Family Family familyd.300.1.2 — Spc24-like

CATH v4.4 (2 domains)

Domain ID domain_id2ftxA00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology457 — Copper Amine Oxidase; Chain A, domain 1
Homologous superfamily homologous superfamily50 — Chromosome segregation protein Spc25
Domain ID domain_id2ftxB00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology160 — Double Stranded RNA Binding Domain
Homologous superfamily homologous superfamily430

8. Citations (1)

9. Files and Curves (10)