6hd8

Crystal structure of the potassium channel MtTMEM175 in complex with a Nanobody-MBP fusion protein

Method: X-RAY DIFFRACTION Dmax: 148.1 Å Quality: REASONABLE

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

Nanobody,Maltose/maltodextrin-binding periplasmic protein

Escherichia coli (strain K12)

UniProt P0AEX9

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 8 其他Polymer 4 PDB declaration: octameric(8) Consistent with protein copy count Chain A; UniProt 32–392 Not recorded TMEM175 × 4 (E4TN31) alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose × 4 LMT DODECYL-BETA-D-MALTOSIDE × 4 K POTASSIUM ION × 8 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;100 mM Tris-HCl pH 8.5, 150 mM NaCl, 150 mM MgCl2 and 28- 30% PEG400 Resolution 2.40 Å R-free 0.253

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.

366 other PDB entries and 491 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name MALE_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 123–483; UniProt 32–392

TMEM175

Marivirga tractuosa DSM 4126

UniProt E4TN31

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Other combination Heteromer Protein × 8 其他Polymer 4 PDB declaration: octameric(8) Consistent with protein copy count Chain B; UniProt 2–247 Not recorded Nanobody,Maltose/maltodextrin-binding periplasmic protein × 4 (P0AEX9) alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose × 4 LMT DODECYL-BETA-D-MALTOSIDE × 4 K POTASSIUM ION × 8 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;100 mM Tris-HCl pH 8.5, 150 mM NaCl, 150 mM MgCl2 and 28- 30% PEG400 Resolution 2.40 Å R-free 0.253

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 E4TN31_MARTH
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 3–248; UniProt 2–247

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 6hd8

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6hd8
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6hd8
Deposition date deposition_date2018-08-17
Structure title titleCrystal structure of the potassium channel MtTMEM175 in complex with a Nanobody-MBP fusion protein
Keywords keywordslysosome, TMEM175, potassium channel, TRANSPORT PROTEIN; TRANSPORT PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier38.45
Radius of gyration Rg (electron density) rg_electron39.31
Forward intensity I(0) i083293000.00
Molecular weight molecular_weight78116.0 kDa
Excluded volume excluded_volume99865 ų
Envelope volume envelope_volume133860 ų
Hydration-shell volume shell_volume33041 ų
Envelope diameter envelope_diameter154.3
Shell Rg shell_rg37.41
Envelope Rg envelope_rg40.18
Shape Rg shape_rg39.31
Total Rg total_rg39.17
Total atoms total_atoms11061
Residues n_residues693
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 dmax148.1
Rg (real space) rg_real39.32
Rg uncertainty (real space) rg_real_error1.83
I(0) (real space) i0_real8.3290e+07
I(0) uncertainty (real space) i0_real_error1.6250e+06
Rg (reciprocal space) rg_reciprocal38.77
I(0) (reciprocal space) i0_reciprocal83250000.0000
Solution quality estimate total_estimate0.7134
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary28.9
Skewness Skewness skewness0.731
Kurtosis Kurtosis kurtosis0.113
Angular range angular_range— – 0.2050 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha8201000.0000
Real-space data points n_real_points42
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.428; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.275; Smooth: 0.710

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id6hd8A01
Class class2 — Mainly Beta
Architecture architecture60 — Sandwich
Topology topology40 — Immunoglobulin-like
Homologous superfamily homologous superfamily10 — Immunoglobulins
Domain ID domain_id6hd8A02
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology190 — D-Maltodextrin-Binding Protein; domain 2
Homologous superfamily homologous superfamily10 — Periplasmic binding protein-like II

8. Citations (2)

9. Files and Curves (10)