1ok0

Crystal Structure of Tendamistat

Method: X-RAY DIFFRACTION Dmax: 42.0 Å Quality: GOOD

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

ALPHA-AMYLASE INHIBITOR HOE-467A

OrganismNot specified

UniProt P01092

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 31–104 Not recorded GOL GLYCEROL × 2 CL CHLORIDE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 1.5;20MG OF LYOPHILIZED PROTEIN WERE DISSOLVED IN 1ML OF DOUBLE-DISTILLED WATER. USING THE HANGING DROP METHOD WITH DROPS OF 2MUL PROTEIN SOLUTION (20 MG/ML) AND 2MUL RESERVOIR SOLUTION (0.1-0.5 M NACL ADJUSTED TO PH 1.3 WITH HYDROCHLORIC ACID), YIELDED TUFT-SHAPED AGGLOMERATES OF ESSENTIALLY ONE-DIMENSIONAL CRYSTALS. STREAK SEEDING {EM VIA} A CAT WHISKER AFTER TOUCHING THESE AGGLOMERATES GAVE SINGLE CRYSTALS WITH DIMENSIONS UP TO 0.1 X 0.01 X 0.01MM^3 Resolution 0.93 Å R-free 0.130

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.

5 other PDB entries and 5 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IAA_STRTE
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–74; UniProt 31–104

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 1ok0

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1ok0
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1ok0
Deposition date deposition_date2003-07-16
Structure title titleCrystal Structure of Tendamistat
Keywords keywordsINHIBITOR, ALPHA AMYLASE INHIBITOR; INHIBITOR
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier12.92
Radius of gyration Rg (electron density) rg_electron11.74
Forward intensity I(0) i01647200.00
Molecular weight molecular_weight8176.0 kDa
Excluded volume excluded_volume9998 ų
Envelope volume envelope_volume11006 ų
Hydration-shell volume shell_volume8361 ų
Envelope diameter envelope_diameter41.7
Shell Rg shell_rg16.92
Envelope Rg envelope_rg12.10
Shape Rg shape_rg11.69
Total Rg total_rg13.11
Total atoms total_atoms571
Residues n_residues74
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 dmax42.0
Rg (real space) rg_real12.87
Rg uncertainty (real space) rg_real_error0.29
I(0) (real space) i0_real1.6470e+06
I(0) uncertainty (real space) i0_real_error1.8210e+04
Rg (reciprocal space) rg_reciprocal12.87
I(0) (reciprocal space) i0_reciprocal1647000.0000
Solution quality estimate total_estimate0.8196
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary14.9
Skewness Skewness skewness0.203
Kurtosis Kurtosis kurtosis-0.401
Angular range angular_range— – 0.5000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha324600.0000
Real-space data points n_real_points80
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.885; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.996; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1ok0a_
Class classb — All beta proteins
Fold Fold foldb.5 — alpha-Amylase inhibitor tendamistat
Superfamily Superfamily superfamilyb.5.1 — alpha-Amylase inhibitor tendamistat
Family Family familyb.5.1.1 — alpha-Amylase inhibitor tendamistat

CATH v4.4 (1 domains)

Domain ID domain_id1ok0A00
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily20 — Alpha-amylase inhibitor

8. Citations (1)

9. Files and Curves (10)