Table II.

Results of orientation search of GroEL map with 7-fold vertical against map with 7-fold horizonal^*, with different amounts of missing data in each map.

Fraction missing	Tilt Series equivalent	Ignoring effect of missing wedge	Accounting for missing wedge
.00	±90.0°	90, −180, 180	90, −180, 180
.10	±81.0°	90, −180, 180	90, −180, 130
.20	±72.0°	90, −180, 280	90, 0, 0
.25	±67.5°	90, −180, 280	90, −170, 10
.30	±63.0°	0, 0, 90	80, 0, −150
.40	±54.0°	0, 0, 90	80, 170, −40
.50	±45.0°	10, 0, −180	20, 40, −60

^*orientation searches for 5 other different pairs of starting orientations of GroEL, and results for all 6 ribosome orientation searches, are in Supplementary Data