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Cryo-EM structure of the human mitochondrial RNA polymerase transcription initiation complex (POLRMT/TFB2M/DNA/RNA) without TFAM; and with a 2-mer RNA (pppGpA) and GTP poised for catalysis (pre-IC3-TFAM)
ELECTRON MICROSCOPY
Refinement
RMS Deviations
Key
Refinement Restraint Deviation
f_dihedral_angle_d
16.447
f_angle_d
0.543
f_chiral_restr
0.035
f_plane_restr
0.005
f_bond_d
0.002
Sample
Cryo-EM structure of the human mitochondrial RNA polymerase transcription initiation complex (POLRMT/TFB2M/DNA/RNA) without TFAM; and with a 2-mer RNA (pppGpA) and GTP poised for catalysis (pre-IC3-TFAM)
Sample Components
DNA-directed RNA polymerase, mitochondrial
DNA (56-mer)
Dimethyladenosine transferase 2, mitochondrial
Specimen Preparation
Sample Aggregation State
PARTICLE
Vitrification Instrument
FEI VITROBOT MARK IV
Cryogen Name
ETHANE
Sample Vitrification Details
incubated on the grid for 5 seconds prior to double sided blotting for 3.5 seconds at force 1