Structures of three MORN repeat proteins and a re-evaluation of the proposed lipid-binding properties of MORN repeats.

Sajko S, Grishkovskaya I, Kostan J, Graewert M Setiawan K, Trübestein L, Niedermüller K, Gehin C, Sponga A, Puchinger M, Gavin AC, Leonard TA, Svergun DI, Smith TK, Morriswood B, Djinovic-Carugo K, PLoS One 15(12):e0242677 (2020) Europe PMC

SASDGB7 – Toxoplasma gondii Membrane Occupation and Recognition Nexus (MORN1) repeats 7-15

Toxoplasma gondii Membrane Occupation and Recognition Nexus (MORN1) repeats 7-15
MWexperimental 50 kDa
MWexpected 49 kDa
VPorod 55 nm3
log I(s) 4.75×103 4.75×102 4.75×101 4.75×100
Toxoplasma gondii Membrane Occupation and Recognition Nexus (MORN1) repeats 7-15 small angle scattering data  s, nm-1
ln I(s)
Toxoplasma gondii Membrane Occupation and Recognition Nexus (MORN1) repeats 7-15 Guinier plot ln 4.76×103 Rg: 4 nm 0 (4 nm)-2 s2
(sRg)2I(s)/I(0)
Toxoplasma gondii Membrane Occupation and Recognition Nexus (MORN1) repeats 7-15 Kratky plot 1.104 0 3 sRg
p(r)
Toxoplasma gondii Membrane Occupation and Recognition Nexus (MORN1) repeats 7-15 pair distance distribution function Rg: 4.3 nm 0 Dmax: 17 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Toxoplasma gondii Membrane Occupation and Recognition Nexus (MORN1) repeats 7-15 DAMMIF model

log I(s)
 s, nm-1
Toxoplasma gondii Membrane Occupation and Recognition Nexus (MORN1) repeats 7-15 CUSTOM IN-HOUSE model

Synchrotron SAXS data from solutions of Toxoplasma gondii Membrane Occupation and Recognition Nexus (MORN1) repeats 7-15 in 20 mM Tris-HCl, 100 mM NaCl, pH 7.5 were collected on the EMBL P12 beam line at the PETRA III storage ring (DESY; Hamburg, Germany) using a Pilatus 2M detector at a sample-detector distance of 3 m and at a wavelength of λ = 0.12 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). In-line size-exclusion chromatography (SEC) SAS was employed. The SEC parameters were as follows: A 100.00 μl sample at 2.6 mg/ml was injected at a 0.50 ml/min flow rate onto a GE Superdex 200 Increase 10/300 column at 20°C. Six successive 1 second frames were collected. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.

Storage temperature = UNKNOWN

Toxoplasma gondii Membrane Occupation and Recognition Nexus (MORN1) repeats 7-15 (tg MORN1 delta6)
Mol. type   Protein
Organism   Toxoplasma gondii
Olig. state   Dimer
Mon. MW   24.4 kDa
 
UniProt   A0A0F7VBC6 (48-363)
Sequence   FASTA