Invariant BECN1 CXXC motifs bind Zn(2+) and regulate structure and function of the BECN1 intrinsically disordered region.

Mukhopadhyay S, Subedi S, Hopkins JB, Ugrinov A, Chakravarthy S, Colbert CL, Sinha SC, Autophagy :1-17 (2023) Europe PMC

SASDQY9 – Beclin-1 amino acids 1-150 with cysteine motif residues mutated to serine, along with a C-terminal tyrosine

Beclin-1 (C18S, C21S, A103V, C137S, C140S)
MWI(0) 23 kDa
MWexpected 17 kDa
VPorod 57 nm3
log I(s) 7.20×10-3 7.20×10-4 7.20×10-5 7.20×10-6
Beclin-1 (C18S, C21S, A103V, C137S, C140S) small angle scattering data  s, nm-1
ln I(s)
Beclin-1 (C18S, C21S, A103V, C137S, C140S) Guinier plot ln 7.20×10-3 Rg: 4.1 nm 0 (4.1 nm)-2 s2
(sRg)2I(s)/I(0)
Beclin-1 (C18S, C21S, A103V, C137S, C140S) Kratky plot 1.104 0 3 sRg
p(r)
Beclin-1 (C18S, C21S, A103V, C137S, C140S) pair distance distribution function Rg: 4.2 nm 0 Dmax: 19.3 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Beclin-1 amino acids 1-150 with cysteine motif residues mutated to serine, along with a C-terminal tyrosine Rg histogram Rg, nm
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model
Beclin-1 (C18S, C21S, A103V, C137S, C140S) EOM/RANCH model

Synchrotron SAXS data from solutions of Beclin-1 amino acids 1-150 with cysteine motif residues mutated to serine in 50 mM Tris, 300 mM NaCl, pH 8 were collected on the BioCAT 18ID beam line at the Advanced Photon Source (APS), Argonne National Laboratory (Lemont, IL, USA) using a Pilatus3 X 1M detector at a sample-detector distance of 3.7 m and at a wavelength of λ = 0.103 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). One solute concentration of 5.00 mg/ml was measured at 22°C. 1233 successive 0.500 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.

The experimental molecular weight was determined using SEC-MALS.

Beclin-1 (C18S, C21S, A103V, C137S, C140S) (BECN1(1-150)YCysTM)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Monomer
Mon. MW   17.1 kDa
 
UniProt   Q14457 (1-150)
Sequence   FASTA