Structural Insights into the Intracellular Region of the Human Magnesium Transport Mediator CNNM4.

Giménez-Mascarell P, Oyenarte I, González-Recio I, Fernández-Rodríguez C, Corral-Rodríguez MÁ, Campos-Zarraga I, Simón J, Kostantin E, Hardy S, Díaz Quintana A, Zubillaga Lizeaga M, Merino N, Diercks T, Blanco FJ, Díaz Moreno I, Martínez-Chantar ML, Tremblay ML, Müller D, Siliqi D, Martínez-Cruz LA, Int J Mol Sci 20(24) (2019) Europe PMC

SASDEN8 – Intracellular region of the human Cyclin and CBS domain divalent metal cation transport mediator-4 in complex with Phosphatase of Regenerating Liver-1 and MgATP

CNNM4_BAT-cNMP-Ctail
Protein tyrosine phosphatase type IVA 1
MWexperimental 125 kDa
MWexpected 135 kDa
VPorod 216 nm3
log I(s) 3.59×10-2 3.59×10-3 3.59×10-4 3.59×10-5
CNNM4_BAT-cNMP-Ctail Protein tyrosine phosphatase type IVA 1 small angle scattering data  s, nm-1
ln I(s)
CNNM4_BAT-cNMP-Ctail Protein tyrosine phosphatase type IVA 1 Guinier plot ln 3.60×10-2 Rg: 4.4 nm 0 (4.4 nm)-2 s2
(sRg)2I(s)/I(0)
CNNM4_BAT-cNMP-Ctail Protein tyrosine phosphatase type IVA 1 Kratky plot 1.104 0 3 sRg
p(r)
CNNM4_BAT-cNMP-Ctail Protein tyrosine phosphatase type IVA 1 pair distance distribution function Rg: 4.7 nm 0 Dmax: 18.3 nm

Data validation


Fits and models


log I(s)
 s, nm-1
CNNM4_BAT-cNMP-Ctail Protein tyrosine phosphatase type IVA 1 CORAL model

log I(s)
 s, nm-1
CNNM4_BAT-cNMP-Ctail Protein tyrosine phosphatase type IVA 1 DAMFILT model

Synchrotron SAXS data from solutions of the intracellular region of the human cyclin and CBS domain divalent metal cation transport mediator-4 in complex with phosphatase of regenerating Liver-1 and MgATP in HEPES buffer pH 7.4, 200 mM NaCl , 1mM DTT, pH 7.4 were collected using size-exclusion chromatography SAXS (SEC-SAXS) on the B21 camera at the Diamond Light Source storage ring (Oxfordshire, UK) using a Pilatus 2M detector at a sample-detector distance of 4.0 m and at a wavelength of λ = 0.1 nm (l(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). The data obtained through the sample elution peak (collected as 620 successive 3 second frames) were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted and the individual subtracted data sets were scaled and averaged to generate the scattering profile displayed in this entry.

SEC-SAXS was performed at 20°C using the following parameters: Column Shodex KW-403 ; Flow rate: 0.08 mL/min; Total acquisition time: 1860s; Sample injection concentration: 5.0 mg/mL; Injection volume: 45μL.

CNNM4_BAT-cNMP-Ctail (CNNM4_intra)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Dimer
Mon. MW   47.9 kDa
 
UniProt   Q6P4Q7
Sequence   FASTA
 
Protein tyrosine phosphatase type IVA 1
Mol. type   Protein
Organism   Mus musculus
Olig. state   Dimer
Mon. MW   19.8 kDa
 
UniProt   Q63739
Sequence   FASTA