2017-09-20 REL PDBe PDBe PDBe 2017-05-03 2017-05-10 2017-07-26 2017-09-20 Bracher A Milicic G Ciniawsky S Wendler P Hayer-Hartl M Hartl FU Bhat JY Milicic G Thieulin-Pardo G Bracher A Maxwell A Ciniawsky S Mueller-Cajar O Engen JR Hartl FU Wendler P Hayer-Hartl M Mol. Cell US 67 744 756.e6 2017 28803776 doi:10.1016/j.molcel.2017.07.004 1097-4164 2168 MOCEFL EMD-3702 associated EM volume

Structure of Rubisco from Rhodobacter spheroides in complex with CABP

CbbX hexamer in complex with Rubisco hexadecamer from Rhodobacter sphaeroides CbbX hexamer in complex with Rubisco hexadecamer from Rhodobacter sphaeroides 0 1 2 3

Crosslinked E.C.M.-CABP-RcaCC complexes were prepared by mixing RcaCC (20 micromolar monomer) with E.C.M-CABP (10 micromolar monomer) in a reaction containing 20 mM HEPES pH 7.5, 50 mM NaCl, 10 mM MgCl2, 10 mM ATP and 1mM RuBP, for 1 min at 25oC prior to addition of 0.125 % of glutaraldehyde (GA). After 10 min the reaction was quenched by addition of 0.1M Tris HCl pH 8 followed by gel filtration on a Superdex 200 PC 3.2/30 column (GE Healthcare).The fractions were eluted in buffer A and analyzed on a 6 % native gel. Fraction 13 containing HMW complexes with the least amount of free Rubisco was chosen for cryo-EM. The crosslinked E.C.M.-CABP-RcaCC complexes were diluted to 0.030-0.035 mg ml-1 in 20 mM Tris-HCl pH 8.0, 50 mM NaCl, 1 mM ATP, 1 mM ATP?S and 1 mM RuBP.

Rhodobacter sphaeroides Escherichia coli Bl21(DE3) 768 CbbX Rhodobacter sphaeroides LEVO MTDAATAPTSIDLRAEYEGSGAKEVLEELDRELIGLKPVKDRIRETAAcLLVERARQKLG LAHETPTLHMSFTGNPGTGKTTVALKMAGLLHRLGYVRKGHLVSVTRDDLVGQYIGHTAP KTKEVLKRAMGGVLFIDEAYYLYRPDNERDYGQEAIEILLQVMENNRDDLVVILAGYADR MENFFQSNPGFRSRIAHHIEFPDYSDEELFEIAGHMLDDQNYQMTPEAETALRAYIGLRR NQPHFANARSIRNALDRARLRQcNRLFTASSGPLDARALSTMAEEDIRASRVFKGGLDSE RRAAEALAR RbcL Rhodobacter sphaeroides Escherichia coli LEVO MDTKTTEIKGKERYKAGVLKYAQMGYWDGDYVPKDTDVLALFRITPQEGVDPVEAAAAVA GESSTATWTVVWTDRLTACDSYRAKAYRVEPVPGTPGQYFCYVAYDLILFEEGSIANLTA SIIGNVFSFKPLKAARLEDMRFPVAYVKTYKGPPTGIVGERERLDKFGKPLLGATTKPKL GLSGKNYGRVVYEGLKGGLDFMKDDENINSQPFMHWRDRFLYVMEAVNLASAQTGEVKGH YLNITAGTMEEMYRRAEFAKSLGSVIVMVDLIIGYTAIQSISEWCRQNDMILHMHRAGHG TYTRQKNHGISFRVIAKWLRLAGVDHLHCGTAVGKLEGDPLTVQGYYNVCREPFNTVDLP RGIFFEQDWADLRKVMPVASGGIHAGQMHQLLSLFGDDVVLQFGGGTIGHPMGIQAGATA NRVALEAMVLARNEGRNIDVEGPEILRAAAKWCKPLEAALDTWGNITFNYTSTDTSDFVP TASVAM RbcS Rhodobacter sphaeroides Escherichia coli LEVO MRITQGCFSFLPDLTDEQISAQVDYCLGRGWAVSLEHTDDPHPRNTYWEMWGMPMFDLRDPKGVMIELDECRKAWPGRYIRINAFDSTRGFETVTMSFIVNRPEVEPSLRMERTEVDGRSIRYTHSIVR singleParticle particle 0.3 8. 20.0 C4H12ClNO3 TRiS-HCl 50.0 NaCl NaCl 1.0 C10H16N5O13P3 ATP 1.0 C10H12Li4N5O12P3S ATP-gammaS 1.0 C5H12O11P2 RuBP Quantifoil R2/2 COPPER CARBON 2.0 GLOW DISCHARGE ETHANE FEI VITROBOT MARK IV

RcaCC hexamers (20 micromolar monomer) were mixed with E.C.M-CABP octamers (10 micromolar monomer) in a reaction containing 20 mM HEPES pH 7.5, 50 mM NaCl, 10 mM MgCl2, 10 mM ATP and 1mM RuBP, for 1 min at 25oC prior to addition of 0.125 % of glutaraldehyde (GA). After 10 min the reaction was quenched by addition of 0.1M Tris HCl pH 8 followed by gel filtration on a Superdex 200 PC 3.2/30 column (GE Healthcare).The fractions were eluted in buffer A and analyzed on a 6 % native gel. Fraction 13 containing HMW complexes with the least amount of free Rubisco were chosen for cryo-EM. The crosslinked E.C.M.-CABP-RcaCC complexes were diluted to 0.0030-0.0035 g ml-1 in 20 mM Tris-HCl pH 8.0, 50 mM NaCl, 1 mM ATP, 1 mM ATP-gammaS and 1 mM RuBP

FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300

Cs corrected Krios 1 at NeCEN (June 2016)

FEI FALCON II (4k x 4k) 1.25 50.0 1 CTFFIND 4

RbcL/RbcS D4 map

C1 6.05 FSC 0.143 CUT-OFF RELION 333711 OTHER OTHER RELION RIGID BODY FIT REAL