Table II.

Node protein dynamics revealed by FRAP and numbers of molecules in nodes

Genotype Half-time, fast/slow phase (number of cells) Recovery, fast/slow Molecules (polypeptides) per node, first/second plateau (number of nodes) Timing of node appearance (number of nodes) 
 min %  min 
mid1-mYFP ND ND 17.1 ± 7.4 (4)/27.7 ± 10 (23) −11.2 ± 1.1 (9) 
mid1-mECitrine 3.03 ± 1.32 (10) 68.6 ND ND 
mid1-mECitrine cdr2Δ 1.97 ± 0.77 (10) 57.8 ND ND 
mYFP-rng2 1.77 ± 1.07 (14) 75.4 9.4 ± 5.6 (25)/28.0 ± 16.9 (25) −12.5 ± 1.1 (8) 
mYFP-rng2 myo2-IQ1ΔIQ2Δ 1.39 ± 0.82 (10) 56.7 10.3 ± 3.4 (16)/30.3 ± 9.4 (16)a −12.8 ± 1.0 (16)a 
mYFP-rng2 cdr2Δ 1.29 ± 0.69 (14) 57.0 ND ND 
mYFP-cdc4 0.20 ± 0.14/1.45 ± 0.45 (11) 21.1/22.3 134.1 ± 93.9 (29)/286.3 ± 130.4 (29) −11.9 ± 1.4 (11) 
mYFP-cdc4 myo2-IQ1ΔIQ2Δ NA/1.39 ± 0.89 (24) NA/53.4 107.5 ± 59.7 (16)/265.0 ± 90.1 (16)a −11.4 ± 1.5 (16)a 
mYFP-myo2 0.51 ± 0.22 (14) 59.5 55.3 ± 32.8 (31) −10.2 ± 2.5 (9) 
mYFP-myo2-IQ1ΔIQ2Δ 0.48 ± 0.31 (18) 71.4 ND ND 
mYFP-myo2 cdr2Δ 0.52 ± 0.22 (11) 79.7 ND ND 
rlc1-mYFP 0.51 ± 0.22 (18) 61.9 41.3 ± 23 (31) −10.2 ± 1.8 (14) 
mYFP-cdc15 0.07 ± 0.02/1.10 ± 0.67 (15) 57.3/27.3 36.3 ± 16.9 (21) −4.9 ± 0.6 (12) 
mYFP-cdc15 cdr2Δ 0.08 ± 0.04/0.83 ± 0.62 (15) 50.9/49.1 ND ND 
cdc12-3YFPb 0.50 ± 0.17 (11) 69.3 6.9 ± 2.9 (16) 1.0 ± 0.6 (16) 
Genotype Half-time, fast/slow phase (number of cells) Recovery, fast/slow Molecules (polypeptides) per node, first/second plateau (number of nodes) Timing of node appearance (number of nodes) 
 min %  min 
mid1-mYFP ND ND 17.1 ± 7.4 (4)/27.7 ± 10 (23) −11.2 ± 1.1 (9) 
mid1-mECitrine 3.03 ± 1.32 (10) 68.6 ND ND 
mid1-mECitrine cdr2Δ 1.97 ± 0.77 (10) 57.8 ND ND 
mYFP-rng2 1.77 ± 1.07 (14) 75.4 9.4 ± 5.6 (25)/28.0 ± 16.9 (25) −12.5 ± 1.1 (8) 
mYFP-rng2 myo2-IQ1ΔIQ2Δ 1.39 ± 0.82 (10) 56.7 10.3 ± 3.4 (16)/30.3 ± 9.4 (16)a −12.8 ± 1.0 (16)a 
mYFP-rng2 cdr2Δ 1.29 ± 0.69 (14) 57.0 ND ND 
mYFP-cdc4 0.20 ± 0.14/1.45 ± 0.45 (11) 21.1/22.3 134.1 ± 93.9 (29)/286.3 ± 130.4 (29) −11.9 ± 1.4 (11) 
mYFP-cdc4 myo2-IQ1ΔIQ2Δ NA/1.39 ± 0.89 (24) NA/53.4 107.5 ± 59.7 (16)/265.0 ± 90.1 (16)a −11.4 ± 1.5 (16)a 
mYFP-myo2 0.51 ± 0.22 (14) 59.5 55.3 ± 32.8 (31) −10.2 ± 2.5 (9) 
mYFP-myo2-IQ1ΔIQ2Δ 0.48 ± 0.31 (18) 71.4 ND ND 
mYFP-myo2 cdr2Δ 0.52 ± 0.22 (11) 79.7 ND ND 
rlc1-mYFP 0.51 ± 0.22 (18) 61.9 41.3 ± 23 (31) −10.2 ± 1.8 (14) 
mYFP-cdc15 0.07 ± 0.02/1.10 ± 0.67 (15) 57.3/27.3 36.3 ± 16.9 (21) −4.9 ± 0.6 (12) 
mYFP-cdc15 cdr2Δ 0.08 ± 0.04/0.83 ± 0.62 (15) 50.9/49.1 ND ND 
cdc12-3YFPb 0.50 ± 0.17 (11) 69.3 6.9 ± 2.9 (16) 1.0 ± 0.6 (16) 

Timing of node appearance is relative to the SPB separation, which is defined as time 0. The timing for Mid1 represents the timing that the Mid1 level reaches the cytokinesis node plateau. NA, not applicable.

a

Not statistically different from wt.

b

Coffman et al., 2009.

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