| MWexperimental | 147 | kDa |
| MWexpected | 129 | kDa |
| VPorod | 242 | nm3 |
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log I(s)
1.40×104
1.40×103
1.40×102
1.40×101
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s, nm-1
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Order from disorder in the sarcomere: FATZ forms a fuzzy but tight complex and phase-separated condensates with α-actinin.
Sponga A, Arolas JL, Schwarz TC, Jeffries CM, Rodriguez Chamorro A, Kostan J, Ghisleni A, Drepper F, Polyansky A, De Almeida Ribeiro E, Pedron M, Zawadzka-Kazimierczuk A, Mlynek G, Peterbauer T, Doto P, Schreiner C, Hollerl E, Mateos B, Geist L, Faulkner G, Kozminski W, Svergun DI, Warscheid B, Zagrovic B, Gautel M, Konrat R, Djinović-Carugo K, Sci Adv 7(22) (2021) Europe PMCSASDJP6 – Sarcomeric fuzzy α-actinin-2/FATZ-1 complex (hd-α-actinin-2/Δ91-FATZ-1)
Δ91 construct of FATZ-1 (alias myozenin-1 or calsarcin-2)Half dimer of α-actinin-2
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Fits and models
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Rg, nm
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Synchrotron SAXS data from solutions the hd-α-actinin-2/Δ91-FATZ-1 complex in 50 mM Tris-HCl 150 mM NaCl, pH 7.5 were collected on the EMBL P12 beam line at PETRA III (DESY, Hamburg, Germany) using a Pilatus 6M detector at a sample-detector distance of 3 m and at a wavelength of λ = 0.124 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 5 mg/ml was injected at a 0.50 ml/min flow rate onto a GE Superose 6 Increase 10/300 column at 20°C. 55 successive 0.995 second frames were collected through the major SEC-elution peak. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.
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