2024-11-27 REL RCSB RCSB RCSB 2023-11-25 2024-05-01 2024-05-01 2024-11-27 National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK) United States Cryo-EM Structure of Smooth Muscle Gamma Actin (ACTG2) Mutant R257C Palmer NJ Carman PJ Ceron RH Dominguez R Filament, Actin, Smooth Muscle, CYTOSOLIC PROTEIN, STRUCTURAL PROTEIN Ceron RH Baez-Cruz FA Palmer NJ Carman PJ Boczkowska M Heuckeroth RO Ostap EM Dominguez R Molecular mechanisms linking missense ACTG2 mutations to visceral myopathy. Sci Adv US 10 eadn6615 eadn6615 2024 38820162 doi:10.1126/sciadv.adn6615 2375-2548 8v2z FULLOVERLAP ACTG2 R257C Filament ACTG2 R257C Filament 0 1
ACTG2 filaments, purified from Expi293 cells
Homo sapiens Smooth Actin, gamma-enteric smooth muscle Homo sapiens Smooth Muscle 0.041881762 5 Homo sapiens LEVO MCEEETTALVCDNGSGLCKAGFAGDDAPRAVFPSIVGRPRHQGVMVGMGQKDSYVGDEAQSKRGILTLKYPIE(HIC)GI ITNWDDMEKIWHHSFYNELRVAPEEHPTLLTEAPLNPKANREKMTQIMFETFNVPAMYVAIQAVLSLYASGRTTGIVLDS GDGVTHNVPIYEGYALPHAIMRLDLAGRDLTDYLMKILTERGYSFVTTAEREIVRDIKEKLCYVALDFENEMATAASSSS LEKSYELPDGQVITIGNERFCCPETLFQPSFIGMESAGIHETTYNSIMKCDIDIRKDLYANNVLSGGTTMYPGIADRMQK EITALAPSTMKIKIIAPPERKYSVWIGGSILASLSTFQQMWISKPEYDEAGPSIVHRKCF P63267 3.6.4.- ADENOSINE-5'-DIPHOSPHATE 0.000427201 5 ADP MAGNESIUM ION 2.4305e-05 5 MG helical filament 0.168 8.0 5.0 C4H11NO3 Tris 100.0 KCl Potassium Chloride 0.2 CaCl2 Calcium Chloride 1.0 C14H24N2O10 EGTA 1.0 MgCl2 Magnesium Chloride 0.2 C10H15N5O10P2 ATP
Actin F-buffer
 Quantifoil R1.2/1.3 COPPER 200 CARBON HOLEY 12.0 GLOW DISCHARGE AIR ETHANE 100 277 FEI VITROBOT MARK III
Blot Force: 0 Blot Time: 2.5 s.
ACTG2 F-actin in the ADP state. R257C mutation
 FEI TITAN KRIOS SPOT SCAN BRIGHT FIELD FIELD EMISSION GUN 300 0.5 2.5 81000.0 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN GATAN K3 (6k x 4k) 1021 45.0 1 27.5 -166.6 C1 2.72 FSC 0.143 CUT-OFF cryoSPARC 4.0 Helix Refinement 473627 8F8P
Individually mutated residues within structure of skeletal muscle actin until each subunit had the sequence of gamma smooth muscle actin with R257C.
 NOT APPLICABLE emd_42938.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 256 256 256 0 0 0 256 256 256 273.92 273.92 273.92 90.0 90.0 90.0 X Y Z -0.22858354 0.9803461 0.0031954448 0.036359396 1.07 1.07 1.07 0.163 AUTHOR 8F8P PDB experimental model RIGID BODY FIT REAL emd_42938_msk_1.map emd_42938_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 256 256 256 0 0 0 256 256 256 273.92 273.92 273.92 90.0 90.0 90.0 X Y Z -0.4333658 1.0503969 0.0011117717 0.0641952 1.07 1.07 1.07 AUTHOR emd_42938_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 256 256 256 0 0 0 256 256 256 273.92 273.92 273.92 90.0 90.0 90.0 X Y Z -0.48092645 1.2097868 0.0010312935 0.06429277 1.07 1.07 1.07 AUTHOR