Phosphorylated smooth muscle heavy meromyosin shows an open conformation linked to activation

REL RCSB RCSB RCSB 2011-01-21 2011-05-05 2011-11-09 2012-03-19 Phosphorylated smooth muscle heavy meromyosin shows an open conformation linked to activation Baumann BAJ Taylor D Huang Z Tama F Fagnant PM Trybus KM Taylor K smHMM,heavy meromyosin,S1,phosphorylation,smooth muscle,activation Baumann BA Taylor DW Huang Z Tama F Fagnant PM Trybus KM Taylor KA Phosphorylated smooth muscle heavy meromyosin shows an open conformation linked to activation. J.MOL.BIOL. 415 274 287 2012 22079364 doi:10.1016/j.jmb.2011.10.047 Wendt T Taylor D Trybus KM Taylor K Three-Dimensional image reconstruction of dephosphorylated smooth muscle heavy meromyosin reveals asymmetry in the interaction between myosin heads and placement of subfragment 2 PNAS 98 4361 4366 2001 11287639 doi:10.1073/pnas.071051098 Wendt T Taylor D Messier T Trybus KM Taylor KA Visualization of head-head interactions in the inhibited state of smooth muscle myosin J.CELL BIOL. 147 1385 1390 1999 10613897 doi:10.1083/jcb.147.7.1385 3j04 FULLOVERLAP Heavy meromyosin subfragment of chicken gizzard smooth muscle myosin with the regulatory light chain in the phosphoryated state Heavy meromyosin subfragment of chicken gizzard smooth muscle myosin with the regulatory light chain in the phosphoryated state

Chicken gizzard smooth muscle heavy meromyosin was expressed, isolated and thiophosphorylated as per Wendt et al. 1999.

1 0.35 heavy meromyosin 2 dimer true Gallus gallus Chicken smooth muscle Baculovirus sarcomere 0.350 Spodoptera frugiperda PVL1392 electronCrystallography twoDArray 0.5 7.8

1 mM Mg, 20 mM phosphate, 1 mM ATP, 1 mM EGTA, 7-10% polyethylene glycol 6000, 90-120 mM NaCl

200 mesh carbon coated grid

ETHANE 90 HOMEMADE PLUNGER

Vitrification instrument: homemade solenoid activated plunge freezer. Carried out in cold room at 4 degrees C

Blot for 4 sec before plunging

crystals grown on a lipid monolayer

FEI/PHILIPS CM300FEG/T SPOT SCAN BRIGHT FIELD TUNGSTEN HAIRPIN 300 2 4.0 24000.0 GATAN LIQUID NITROGEN 90 objective lens astigmatism corrected at 250 times magnification 2004-10-10 KODAK SO-163 FILM ZEISS SCAI 7 85 40 16. eucentric -60 60 -60 60 OTHER 20.0 CCP4

A total of 85 unique averaged structure factors were obtained and had an average phase residual of 17.9 degrees with a resolution to approx 2.1 nm

219.3 174.8 94.4 94.4 90 90 P 2

determined using ICE and corrected with CTFAPPPLY

emd_5257.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 169 81 35 -84 -40 -17 175 169 35 419.0693 428.995 85.9985 90.0 90.0 90.0 X Y Z -4.67003298 4.40441799 -0.03437874 1.01000309 2.4797 2.4514 2.4571 0.609 AUTHOR This is an image of the 2D crystal looking from the top down

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1BR1 RIGID BODY FIT NMFF

Protocol: rigid body. The model was roughly fit into the density map using O the refined using NMFF. The entire structure was then minimized using minCHARMM.pl

REAL 2MYS RIGID BODY FIT NMFF

Protocol: rigid body. The model was roughly fit into the density map using O the refined using NMFF. The entire structure was then minimized using minCHARMM.pl

REAL