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