Table 2.

The thermodynamic parameters for buG4 formation with different bulge size under noncrowding and crowding conditions

 Noncrowdinga (without PEG 200)Crowdingb (10 wt% PEG 200)
NameSequences (5′- 3′)Tm (°C)cΔG°37 (kcal·mol-1)Tm (°C)cΔG°37 (kcal·mol-1)
bT1-1TTGTGGTGGGTGGGTGGGT74.9 ± 0.5−6.6 ± 0.681.0 ± 0.9−7.8 ± 0.3
bT2-1TTGTTGGTGGGTGGGTGGGT59.8 ± 0.9−4.1 ± 0.368.4 ± 0.2−5.7 ± 0.4
bT3-1TTGTTTGGTGGGTGGGTGGGT49.4 ± 0.6−2.2 ± 0.158.9 ± 0.5−4.0 ± 0.2
bT4-1TTGTTTTGGTGGGTGGGTGGGT42.0 ± 1.0−1.0 ± 0.451.6 ± 0.2−2.6 ± 0.2
bT5-1TTGTTTTTGGTGGGTGGGTGGGT37.7 ± 0.3−0.2 ± 0.348.0 ± 0.4−1.7 ± 0.1
bT6-1TTGTTTTTTGGTGGGTGGGTGGGT34.2 ± 0.20.2 ± 0.246.4 ± 0.8−1.5 ± 0.4
bT7-1TTGTTTTTTTGGTGGGTGGGTGGGT33.2 ± 0.20.5 ± 0.146.5 ± 0.4−1.6 ± 0.3
bT1-2TTGGTGTGGGTGGGTGGGT64.2 ± 0.2−4.3 ± 0.171.9 ± 0.5−6.1 ± 0.2
bT2-2TTGGTTGTGGGTGGGTGGGT64.2 ± 0.2−3.6 ± 0.569.2 ± 0.1−5.8 ± 0.4
bT3-2TTGGTTTGTGGGTGGGTGGGT58.4 ± 0.1−3.3 ± 0.263.3 ± 1.2−4.8 ± 0.3
bT4-2TTGGTTTTGTGGGTGGGTGGGT50.2 ± 0.2−2.4 ± 0.155.8 ± 0.1−3.5 ± 0.3
bT5-2TTGGTTTTTGTGGGTGGGTGGGT44.4 ± 2.0−1.1 ± 0.149.4 ± 3.0−2.3 ± 0.5
bT6-2TTGGTTTTTTGTGGGTGGGTGGGT39.4 ± 0.6−0.3 ± 0.244.4 ± 0.3−1.4 ± 0.2
bT7-2TTGGTTTTTTTGTGGGTGGGTGGGT35.6 ± 0.60.2 ± 0.141.1 ± 1.1−0.8 ± 0.4
bT1-3TTGGGTGTGGTGGGTGGGT65.6 ± 0.9−5.3 ± 0.375.8 ± 1.1−7.2 ± 0.3
bT2-3TTGGGTGTTGGTGGGTGGGT46.1 ± 0.1−1.5 ± 0.157.6 ± 0.5−3.6 ± 0.3
bT3-3TTGGGTGTTTGGTGGGTGGGT34.6 ± 0.60.3 ± 0.344.9 ± 0.5−1.5 ± 0.5
bT4-3TTGGGTGTTTTGGTGGGTGGGT24.9 ± 2.1d37.4 ± 1.0−0.2 ± 0.3
bT5-3TTGGGTGTTTTTGGTGGGTGGGT19.6 ± 1.4d32.4 ± 0.80.5 ± 0.2
bT6-3TTGGGTGTTTTTTGGTGGGTGGGT14.7 ± 1.5d28.7 ± 0.91.0 ± 0.2
bT7-3TTGGGTGTTTTTTTGGTGGGTGGGTdd27.2 ± 0.51.6 ± 0.1
bT1-4TTGGGTGGTGTGGGTGGGT65.3 ± 0.7−5.3 ± 0.372.0 ± 0.6−6.6 ± 0.1
bT2-4TTGGGTGGTTGTGGGTGGGT66.5 ± 0.6−5.1 ± 0.270.5 ± 0.3−6.5 ± 0.2
bT3-4TTGGGTGGTTTGTGGGTGGGT63.7 ± 0.8−5.2 ± 0.266.8 ± 0.5−5.8 ± 0.2
bT4-4TTGGGTGGTTTTGTGGGTGGGT53.2 ± 0.6−3.1 ± 0.256.8 ± 0.5−4.0 ± 0.3
bT5-4TTGGGTGGTTTTTGTGGGTGGGT45.5 ± 0.5−1.7 ± 0.150.1 ± 0.5−2.6 ± 0.1
bT6-4TTGGGTGGTTTTTTGTGGGTGGGT40.1 ± 0.5−0.8 ± 0.245.5 ± 0.3−1.8 ± 0.2
bT7-4TTGGGTGGTTTTTTTGTGGGTGGGT37.2 ± 0.4−0.1 ± 0.142.5 ± 0.9−1.1 ± 0.1
bT1-5TTGGGTGGGTGTGGTGGGT64.7 ± 1.0−5.3 ± 0.374.8 ± 0.5−7.4 ± 0.3
bT2-5TTGGGTGGGTGTTGGTGGGT45.5 ± 1.2−1.1 ± 0.457.2 ± 0.1−3.6 ± 0.1
bT3-5TTGGGTGGGTGTTTGGTGGGT34.2 ± 1.50.4 ± 0.244.9 ± 0.2−1.7 ± 0.5
bT4-5TTGGGTGGGTGTTTTGGTGGGT26.2 ± 1.0d35.6 ± 0.3−0.4 ± 0.1
bT5-5TTGGGTGGGTGTTTTTGGTGGGT22.0 ± 1.2d31.9 ± 1.50.4 ± 0.1
bT6-5TTGGGTGGGTGTTTTTTGGTGGGT18.6 ± 1.4d29.3 ± 1.31.0 ± 0.1
bT7-5TTGGGTGGGTGTTTTTTTGGTGGGT16.3 ± 0.4d26.5 ± 1.50.5 ± 0.2
bT1-6TTGGGTGGGTGGTGTGGGT63.2 ± 0.5−4.7 ± 0.271.8 ± 0.8−6.4 ± 0.2
bT2-6TTGGGTGGGTGGTTGTGGGT63.3 ± 0.8−4.9 ± 0.167.4 ± 0.6−5.9 ± 0.2
bT3-6TTGGGTGGGTGGTTTGTGGGT60.5 ± 0.6−4.5 ± 0.164.0 ± 0.6−5.2 ± 0.1
bT4-6TTGGGTGGGTGGTTTTGTGGGT49.6 ± 0.6−2.4 ± 0.254.3 ± 0.5−3.2 ± 0.3
bT5-6TTGGGTGGGTGGTTTTTGTGGGT41.6 ± 0.8−1.0 ± 0.148.1 ± 0.6−2.2 ± 0.1
bT6-6TTGGGTGGGTGGTTTTTTGTGGGT36.7 ± 0.5−0.2 ± 0.142.8 ± 0.3−1.2 ± 0.1
bT7-6TTGGGTGGGTGGTTTTTTTGTGGGT33.2 ± 0.90.5 ± 0.139.9 ± 1.1−0.6 ± 0.1
bT1-7TTGGGTGGGTGGGTGTGGT63.4 ± 0.5−4.8 ± 0.573.8 ± 0.2−7.0 ± 0.4
bT2-7TTGGGTGGGTGGGTGTTGGT47.0 ± 0.1−1.3 ± 0.557.2 ± 0.1−3.8 ± 0.4
bT3-7TTGGGTGGGTGGGTGTTTGGT31.9 ± 1.10.7 ± 0.243.6 ± 0.9−1.1 ± 0.2
bT4-7TTGGGTGGGTGGGTGTTTTGGT25.2 ± 1.21.6 ± 0.335.1 ± 0.6−0.1 ± 0.2
bT5-7TTGGGTGGGTGGGTGTTTTTGGT20.2 ± 0.31.7 ± 0.429.9 ± 0.80.7 ± 0.2
bT6-7TTGGGTGGGTGGGTGTTTTTTGGT15.2 ± 1.2d26.2 ± 0.61.1 ± 0.2
bT7-7TTGGGTGGGTGGGTGTTTTTTTGGTdd24.9 ± 0.9d
bT1-8TTGGGTGGGTGGGTGGTGT64.3 ± 0.5−4.0 ± 0.273.6 ± 0.4−6.6 ± 0.4
bT2-8TTGGGTGGGTGGGTGGTTGT58.5 ± 1.5−4.0 ± 0.265.6 ± 0.3−5.5 ± 0.5
bT3-8TTGGGTGGGTGGGTGGTTTGT56.3 ± 0.7−3.5 ± 0.560.5 ± 0.3−4.7 ± 0.4
bT4-8TTGGGTGGGTGGGTGGTTTTGT47.8 ± 1.5−1.1 ± 0.652.1 ± 1.2−2.8 ± 0.4
bT5-8TTGGGTGGGTGGGTGGTTTTTGT38.8 ± 1.2−0.2 ± 0.246.2 ± 0.1−1.5 ± 0.3
bT6-8TTGGGTGGGTGGGTGGTTTTTTGT34.9 ± 0.90.3 ± 0.143.8 ± 0.6−1.2 ± 0.5
bT7-8TTGGGTGGGTGGGTGGTTTTTTTGT33.3 ± 0.30.9 ± 0.442.7 ± 0.7−1.1 ± 0.5
 Noncrowdinga (without PEG 200)Crowdingb (10 wt% PEG 200)
NameSequences (5′- 3′)Tm (°C)cΔG°37 (kcal·mol-1)Tm (°C)cΔG°37 (kcal·mol-1)
bT1-1TTGTGGTGGGTGGGTGGGT74.9 ± 0.5−6.6 ± 0.681.0 ± 0.9−7.8 ± 0.3
bT2-1TTGTTGGTGGGTGGGTGGGT59.8 ± 0.9−4.1 ± 0.368.4 ± 0.2−5.7 ± 0.4
bT3-1TTGTTTGGTGGGTGGGTGGGT49.4 ± 0.6−2.2 ± 0.158.9 ± 0.5−4.0 ± 0.2
bT4-1TTGTTTTGGTGGGTGGGTGGGT42.0 ± 1.0−1.0 ± 0.451.6 ± 0.2−2.6 ± 0.2
bT5-1TTGTTTTTGGTGGGTGGGTGGGT37.7 ± 0.3−0.2 ± 0.348.0 ± 0.4−1.7 ± 0.1
bT6-1TTGTTTTTTGGTGGGTGGGTGGGT34.2 ± 0.20.2 ± 0.246.4 ± 0.8−1.5 ± 0.4
bT7-1TTGTTTTTTTGGTGGGTGGGTGGGT33.2 ± 0.20.5 ± 0.146.5 ± 0.4−1.6 ± 0.3
bT1-2TTGGTGTGGGTGGGTGGGT64.2 ± 0.2−4.3 ± 0.171.9 ± 0.5−6.1 ± 0.2
bT2-2TTGGTTGTGGGTGGGTGGGT64.2 ± 0.2−3.6 ± 0.569.2 ± 0.1−5.8 ± 0.4
bT3-2TTGGTTTGTGGGTGGGTGGGT58.4 ± 0.1−3.3 ± 0.263.3 ± 1.2−4.8 ± 0.3
bT4-2TTGGTTTTGTGGGTGGGTGGGT50.2 ± 0.2−2.4 ± 0.155.8 ± 0.1−3.5 ± 0.3
bT5-2TTGGTTTTTGTGGGTGGGTGGGT44.4 ± 2.0−1.1 ± 0.149.4 ± 3.0−2.3 ± 0.5
bT6-2TTGGTTTTTTGTGGGTGGGTGGGT39.4 ± 0.6−0.3 ± 0.244.4 ± 0.3−1.4 ± 0.2
bT7-2TTGGTTTTTTTGTGGGTGGGTGGGT35.6 ± 0.60.2 ± 0.141.1 ± 1.1−0.8 ± 0.4
bT1-3TTGGGTGTGGTGGGTGGGT65.6 ± 0.9−5.3 ± 0.375.8 ± 1.1−7.2 ± 0.3
bT2-3TTGGGTGTTGGTGGGTGGGT46.1 ± 0.1−1.5 ± 0.157.6 ± 0.5−3.6 ± 0.3
bT3-3TTGGGTGTTTGGTGGGTGGGT34.6 ± 0.60.3 ± 0.344.9 ± 0.5−1.5 ± 0.5
bT4-3TTGGGTGTTTTGGTGGGTGGGT24.9 ± 2.1d37.4 ± 1.0−0.2 ± 0.3
bT5-3TTGGGTGTTTTTGGTGGGTGGGT19.6 ± 1.4d32.4 ± 0.80.5 ± 0.2
bT6-3TTGGGTGTTTTTTGGTGGGTGGGT14.7 ± 1.5d28.7 ± 0.91.0 ± 0.2
bT7-3TTGGGTGTTTTTTTGGTGGGTGGGTdd27.2 ± 0.51.6 ± 0.1
bT1-4TTGGGTGGTGTGGGTGGGT65.3 ± 0.7−5.3 ± 0.372.0 ± 0.6−6.6 ± 0.1
bT2-4TTGGGTGGTTGTGGGTGGGT66.5 ± 0.6−5.1 ± 0.270.5 ± 0.3−6.5 ± 0.2
bT3-4TTGGGTGGTTTGTGGGTGGGT63.7 ± 0.8−5.2 ± 0.266.8 ± 0.5−5.8 ± 0.2
bT4-4TTGGGTGGTTTTGTGGGTGGGT53.2 ± 0.6−3.1 ± 0.256.8 ± 0.5−4.0 ± 0.3
bT5-4TTGGGTGGTTTTTGTGGGTGGGT45.5 ± 0.5−1.7 ± 0.150.1 ± 0.5−2.6 ± 0.1
bT6-4TTGGGTGGTTTTTTGTGGGTGGGT40.1 ± 0.5−0.8 ± 0.245.5 ± 0.3−1.8 ± 0.2
bT7-4TTGGGTGGTTTTTTTGTGGGTGGGT37.2 ± 0.4−0.1 ± 0.142.5 ± 0.9−1.1 ± 0.1
bT1-5TTGGGTGGGTGTGGTGGGT64.7 ± 1.0−5.3 ± 0.374.8 ± 0.5−7.4 ± 0.3
bT2-5TTGGGTGGGTGTTGGTGGGT45.5 ± 1.2−1.1 ± 0.457.2 ± 0.1−3.6 ± 0.1
bT3-5TTGGGTGGGTGTTTGGTGGGT34.2 ± 1.50.4 ± 0.244.9 ± 0.2−1.7 ± 0.5
bT4-5TTGGGTGGGTGTTTTGGTGGGT26.2 ± 1.0d35.6 ± 0.3−0.4 ± 0.1
bT5-5TTGGGTGGGTGTTTTTGGTGGGT22.0 ± 1.2d31.9 ± 1.50.4 ± 0.1
bT6-5TTGGGTGGGTGTTTTTTGGTGGGT18.6 ± 1.4d29.3 ± 1.31.0 ± 0.1
bT7-5TTGGGTGGGTGTTTTTTTGGTGGGT16.3 ± 0.4d26.5 ± 1.50.5 ± 0.2
bT1-6TTGGGTGGGTGGTGTGGGT63.2 ± 0.5−4.7 ± 0.271.8 ± 0.8−6.4 ± 0.2
bT2-6TTGGGTGGGTGGTTGTGGGT63.3 ± 0.8−4.9 ± 0.167.4 ± 0.6−5.9 ± 0.2
bT3-6TTGGGTGGGTGGTTTGTGGGT60.5 ± 0.6−4.5 ± 0.164.0 ± 0.6−5.2 ± 0.1
bT4-6TTGGGTGGGTGGTTTTGTGGGT49.6 ± 0.6−2.4 ± 0.254.3 ± 0.5−3.2 ± 0.3
bT5-6TTGGGTGGGTGGTTTTTGTGGGT41.6 ± 0.8−1.0 ± 0.148.1 ± 0.6−2.2 ± 0.1
bT6-6TTGGGTGGGTGGTTTTTTGTGGGT36.7 ± 0.5−0.2 ± 0.142.8 ± 0.3−1.2 ± 0.1
bT7-6TTGGGTGGGTGGTTTTTTTGTGGGT33.2 ± 0.90.5 ± 0.139.9 ± 1.1−0.6 ± 0.1
bT1-7TTGGGTGGGTGGGTGTGGT63.4 ± 0.5−4.8 ± 0.573.8 ± 0.2−7.0 ± 0.4
bT2-7TTGGGTGGGTGGGTGTTGGT47.0 ± 0.1−1.3 ± 0.557.2 ± 0.1−3.8 ± 0.4
bT3-7TTGGGTGGGTGGGTGTTTGGT31.9 ± 1.10.7 ± 0.243.6 ± 0.9−1.1 ± 0.2
bT4-7TTGGGTGGGTGGGTGTTTTGGT25.2 ± 1.21.6 ± 0.335.1 ± 0.6−0.1 ± 0.2
bT5-7TTGGGTGGGTGGGTGTTTTTGGT20.2 ± 0.31.7 ± 0.429.9 ± 0.80.7 ± 0.2
bT6-7TTGGGTGGGTGGGTGTTTTTTGGT15.2 ± 1.2d26.2 ± 0.61.1 ± 0.2
bT7-7TTGGGTGGGTGGGTGTTTTTTTGGTdd24.9 ± 0.9d
bT1-8TTGGGTGGGTGGGTGGTGT64.3 ± 0.5−4.0 ± 0.273.6 ± 0.4−6.6 ± 0.4
bT2-8TTGGGTGGGTGGGTGGTTGT58.5 ± 1.5−4.0 ± 0.265.6 ± 0.3−5.5 ± 0.5
bT3-8TTGGGTGGGTGGGTGGTTTGT56.3 ± 0.7−3.5 ± 0.560.5 ± 0.3−4.7 ± 0.4
bT4-8TTGGGTGGGTGGGTGGTTTTGT47.8 ± 1.5−1.1 ± 0.652.1 ± 1.2−2.8 ± 0.4
bT5-8TTGGGTGGGTGGGTGGTTTTTGT38.8 ± 1.2−0.2 ± 0.246.2 ± 0.1−1.5 ± 0.3
bT6-8TTGGGTGGGTGGGTGGTTTTTTGT34.9 ± 0.90.3 ± 0.143.8 ± 0.6−1.2 ± 0.5
bT7-8TTGGGTGGGTGGGTGGTTTTTTTGT33.3 ± 0.30.9 ± 0.442.7 ± 0.7−1.1 ± 0.5

aExperiments were performed in 10 mM Tris–HCl buffer containing 10 mM KCl (pH 7.4 at 37°C).

bExperiments were performed in 10 mM Tris–HCl buffer containing 10 mM KCl and 10 wt% PEG 200 (pH 7.4 at 37°C).

cDNA concentration used for the measurement was 5 μM. d(-) represents the values cannot be calculated as the buG4 structures were unstable at 37°C.

Table 2.

The thermodynamic parameters for buG4 formation with different bulge size under noncrowding and crowding conditions

 Noncrowdinga (without PEG 200)Crowdingb (10 wt% PEG 200)
NameSequences (5′- 3′)Tm (°C)cΔG°37 (kcal·mol-1)Tm (°C)cΔG°37 (kcal·mol-1)
bT1-1TTGTGGTGGGTGGGTGGGT74.9 ± 0.5−6.6 ± 0.681.0 ± 0.9−7.8 ± 0.3
bT2-1TTGTTGGTGGGTGGGTGGGT59.8 ± 0.9−4.1 ± 0.368.4 ± 0.2−5.7 ± 0.4
bT3-1TTGTTTGGTGGGTGGGTGGGT49.4 ± 0.6−2.2 ± 0.158.9 ± 0.5−4.0 ± 0.2
bT4-1TTGTTTTGGTGGGTGGGTGGGT42.0 ± 1.0−1.0 ± 0.451.6 ± 0.2−2.6 ± 0.2
bT5-1TTGTTTTTGGTGGGTGGGTGGGT37.7 ± 0.3−0.2 ± 0.348.0 ± 0.4−1.7 ± 0.1
bT6-1TTGTTTTTTGGTGGGTGGGTGGGT34.2 ± 0.20.2 ± 0.246.4 ± 0.8−1.5 ± 0.4
bT7-1TTGTTTTTTTGGTGGGTGGGTGGGT33.2 ± 0.20.5 ± 0.146.5 ± 0.4−1.6 ± 0.3
bT1-2TTGGTGTGGGTGGGTGGGT64.2 ± 0.2−4.3 ± 0.171.9 ± 0.5−6.1 ± 0.2
bT2-2TTGGTTGTGGGTGGGTGGGT64.2 ± 0.2−3.6 ± 0.569.2 ± 0.1−5.8 ± 0.4
bT3-2TTGGTTTGTGGGTGGGTGGGT58.4 ± 0.1−3.3 ± 0.263.3 ± 1.2−4.8 ± 0.3
bT4-2TTGGTTTTGTGGGTGGGTGGGT50.2 ± 0.2−2.4 ± 0.155.8 ± 0.1−3.5 ± 0.3
bT5-2TTGGTTTTTGTGGGTGGGTGGGT44.4 ± 2.0−1.1 ± 0.149.4 ± 3.0−2.3 ± 0.5
bT6-2TTGGTTTTTTGTGGGTGGGTGGGT39.4 ± 0.6−0.3 ± 0.244.4 ± 0.3−1.4 ± 0.2
bT7-2TTGGTTTTTTTGTGGGTGGGTGGGT35.6 ± 0.60.2 ± 0.141.1 ± 1.1−0.8 ± 0.4
bT1-3TTGGGTGTGGTGGGTGGGT65.6 ± 0.9−5.3 ± 0.375.8 ± 1.1−7.2 ± 0.3
bT2-3TTGGGTGTTGGTGGGTGGGT46.1 ± 0.1−1.5 ± 0.157.6 ± 0.5−3.6 ± 0.3
bT3-3TTGGGTGTTTGGTGGGTGGGT34.6 ± 0.60.3 ± 0.344.9 ± 0.5−1.5 ± 0.5
bT4-3TTGGGTGTTTTGGTGGGTGGGT24.9 ± 2.1d37.4 ± 1.0−0.2 ± 0.3
bT5-3TTGGGTGTTTTTGGTGGGTGGGT19.6 ± 1.4d32.4 ± 0.80.5 ± 0.2
bT6-3TTGGGTGTTTTTTGGTGGGTGGGT14.7 ± 1.5d28.7 ± 0.91.0 ± 0.2
bT7-3TTGGGTGTTTTTTTGGTGGGTGGGTdd27.2 ± 0.51.6 ± 0.1
bT1-4TTGGGTGGTGTGGGTGGGT65.3 ± 0.7−5.3 ± 0.372.0 ± 0.6−6.6 ± 0.1
bT2-4TTGGGTGGTTGTGGGTGGGT66.5 ± 0.6−5.1 ± 0.270.5 ± 0.3−6.5 ± 0.2
bT3-4TTGGGTGGTTTGTGGGTGGGT63.7 ± 0.8−5.2 ± 0.266.8 ± 0.5−5.8 ± 0.2
bT4-4TTGGGTGGTTTTGTGGGTGGGT53.2 ± 0.6−3.1 ± 0.256.8 ± 0.5−4.0 ± 0.3
bT5-4TTGGGTGGTTTTTGTGGGTGGGT45.5 ± 0.5−1.7 ± 0.150.1 ± 0.5−2.6 ± 0.1
bT6-4TTGGGTGGTTTTTTGTGGGTGGGT40.1 ± 0.5−0.8 ± 0.245.5 ± 0.3−1.8 ± 0.2
bT7-4TTGGGTGGTTTTTTTGTGGGTGGGT37.2 ± 0.4−0.1 ± 0.142.5 ± 0.9−1.1 ± 0.1
bT1-5TTGGGTGGGTGTGGTGGGT64.7 ± 1.0−5.3 ± 0.374.8 ± 0.5−7.4 ± 0.3
bT2-5TTGGGTGGGTGTTGGTGGGT45.5 ± 1.2−1.1 ± 0.457.2 ± 0.1−3.6 ± 0.1
bT3-5TTGGGTGGGTGTTTGGTGGGT34.2 ± 1.50.4 ± 0.244.9 ± 0.2−1.7 ± 0.5
bT4-5TTGGGTGGGTGTTTTGGTGGGT26.2 ± 1.0d35.6 ± 0.3−0.4 ± 0.1
bT5-5TTGGGTGGGTGTTTTTGGTGGGT22.0 ± 1.2d31.9 ± 1.50.4 ± 0.1
bT6-5TTGGGTGGGTGTTTTTTGGTGGGT18.6 ± 1.4d29.3 ± 1.31.0 ± 0.1
bT7-5TTGGGTGGGTGTTTTTTTGGTGGGT16.3 ± 0.4d26.5 ± 1.50.5 ± 0.2
bT1-6TTGGGTGGGTGGTGTGGGT63.2 ± 0.5−4.7 ± 0.271.8 ± 0.8−6.4 ± 0.2
bT2-6TTGGGTGGGTGGTTGTGGGT63.3 ± 0.8−4.9 ± 0.167.4 ± 0.6−5.9 ± 0.2
bT3-6TTGGGTGGGTGGTTTGTGGGT60.5 ± 0.6−4.5 ± 0.164.0 ± 0.6−5.2 ± 0.1
bT4-6TTGGGTGGGTGGTTTTGTGGGT49.6 ± 0.6−2.4 ± 0.254.3 ± 0.5−3.2 ± 0.3
bT5-6TTGGGTGGGTGGTTTTTGTGGGT41.6 ± 0.8−1.0 ± 0.148.1 ± 0.6−2.2 ± 0.1
bT6-6TTGGGTGGGTGGTTTTTTGTGGGT36.7 ± 0.5−0.2 ± 0.142.8 ± 0.3−1.2 ± 0.1
bT7-6TTGGGTGGGTGGTTTTTTTGTGGGT33.2 ± 0.90.5 ± 0.139.9 ± 1.1−0.6 ± 0.1
bT1-7TTGGGTGGGTGGGTGTGGT63.4 ± 0.5−4.8 ± 0.573.8 ± 0.2−7.0 ± 0.4
bT2-7TTGGGTGGGTGGGTGTTGGT47.0 ± 0.1−1.3 ± 0.557.2 ± 0.1−3.8 ± 0.4
bT3-7TTGGGTGGGTGGGTGTTTGGT31.9 ± 1.10.7 ± 0.243.6 ± 0.9−1.1 ± 0.2
bT4-7TTGGGTGGGTGGGTGTTTTGGT25.2 ± 1.21.6 ± 0.335.1 ± 0.6−0.1 ± 0.2
bT5-7TTGGGTGGGTGGGTGTTTTTGGT20.2 ± 0.31.7 ± 0.429.9 ± 0.80.7 ± 0.2
bT6-7TTGGGTGGGTGGGTGTTTTTTGGT15.2 ± 1.2d26.2 ± 0.61.1 ± 0.2
bT7-7TTGGGTGGGTGGGTGTTTTTTTGGTdd24.9 ± 0.9d
bT1-8TTGGGTGGGTGGGTGGTGT64.3 ± 0.5−4.0 ± 0.273.6 ± 0.4−6.6 ± 0.4
bT2-8TTGGGTGGGTGGGTGGTTGT58.5 ± 1.5−4.0 ± 0.265.6 ± 0.3−5.5 ± 0.5
bT3-8TTGGGTGGGTGGGTGGTTTGT56.3 ± 0.7−3.5 ± 0.560.5 ± 0.3−4.7 ± 0.4
bT4-8TTGGGTGGGTGGGTGGTTTTGT47.8 ± 1.5−1.1 ± 0.652.1 ± 1.2−2.8 ± 0.4
bT5-8TTGGGTGGGTGGGTGGTTTTTGT38.8 ± 1.2−0.2 ± 0.246.2 ± 0.1−1.5 ± 0.3
bT6-8TTGGGTGGGTGGGTGGTTTTTTGT34.9 ± 0.90.3 ± 0.143.8 ± 0.6−1.2 ± 0.5
bT7-8TTGGGTGGGTGGGTGGTTTTTTTGT33.3 ± 0.30.9 ± 0.442.7 ± 0.7−1.1 ± 0.5
 Noncrowdinga (without PEG 200)Crowdingb (10 wt% PEG 200)
NameSequences (5′- 3′)Tm (°C)cΔG°37 (kcal·mol-1)Tm (°C)cΔG°37 (kcal·mol-1)
bT1-1TTGTGGTGGGTGGGTGGGT74.9 ± 0.5−6.6 ± 0.681.0 ± 0.9−7.8 ± 0.3
bT2-1TTGTTGGTGGGTGGGTGGGT59.8 ± 0.9−4.1 ± 0.368.4 ± 0.2−5.7 ± 0.4
bT3-1TTGTTTGGTGGGTGGGTGGGT49.4 ± 0.6−2.2 ± 0.158.9 ± 0.5−4.0 ± 0.2
bT4-1TTGTTTTGGTGGGTGGGTGGGT42.0 ± 1.0−1.0 ± 0.451.6 ± 0.2−2.6 ± 0.2
bT5-1TTGTTTTTGGTGGGTGGGTGGGT37.7 ± 0.3−0.2 ± 0.348.0 ± 0.4−1.7 ± 0.1
bT6-1TTGTTTTTTGGTGGGTGGGTGGGT34.2 ± 0.20.2 ± 0.246.4 ± 0.8−1.5 ± 0.4
bT7-1TTGTTTTTTTGGTGGGTGGGTGGGT33.2 ± 0.20.5 ± 0.146.5 ± 0.4−1.6 ± 0.3
bT1-2TTGGTGTGGGTGGGTGGGT64.2 ± 0.2−4.3 ± 0.171.9 ± 0.5−6.1 ± 0.2
bT2-2TTGGTTGTGGGTGGGTGGGT64.2 ± 0.2−3.6 ± 0.569.2 ± 0.1−5.8 ± 0.4
bT3-2TTGGTTTGTGGGTGGGTGGGT58.4 ± 0.1−3.3 ± 0.263.3 ± 1.2−4.8 ± 0.3
bT4-2TTGGTTTTGTGGGTGGGTGGGT50.2 ± 0.2−2.4 ± 0.155.8 ± 0.1−3.5 ± 0.3
bT5-2TTGGTTTTTGTGGGTGGGTGGGT44.4 ± 2.0−1.1 ± 0.149.4 ± 3.0−2.3 ± 0.5
bT6-2TTGGTTTTTTGTGGGTGGGTGGGT39.4 ± 0.6−0.3 ± 0.244.4 ± 0.3−1.4 ± 0.2
bT7-2TTGGTTTTTTTGTGGGTGGGTGGGT35.6 ± 0.60.2 ± 0.141.1 ± 1.1−0.8 ± 0.4
bT1-3TTGGGTGTGGTGGGTGGGT65.6 ± 0.9−5.3 ± 0.375.8 ± 1.1−7.2 ± 0.3
bT2-3TTGGGTGTTGGTGGGTGGGT46.1 ± 0.1−1.5 ± 0.157.6 ± 0.5−3.6 ± 0.3
bT3-3TTGGGTGTTTGGTGGGTGGGT34.6 ± 0.60.3 ± 0.344.9 ± 0.5−1.5 ± 0.5
bT4-3TTGGGTGTTTTGGTGGGTGGGT24.9 ± 2.1d37.4 ± 1.0−0.2 ± 0.3
bT5-3TTGGGTGTTTTTGGTGGGTGGGT19.6 ± 1.4d32.4 ± 0.80.5 ± 0.2
bT6-3TTGGGTGTTTTTTGGTGGGTGGGT14.7 ± 1.5d28.7 ± 0.91.0 ± 0.2
bT7-3TTGGGTGTTTTTTTGGTGGGTGGGTdd27.2 ± 0.51.6 ± 0.1
bT1-4TTGGGTGGTGTGGGTGGGT65.3 ± 0.7−5.3 ± 0.372.0 ± 0.6−6.6 ± 0.1
bT2-4TTGGGTGGTTGTGGGTGGGT66.5 ± 0.6−5.1 ± 0.270.5 ± 0.3−6.5 ± 0.2
bT3-4TTGGGTGGTTTGTGGGTGGGT63.7 ± 0.8−5.2 ± 0.266.8 ± 0.5−5.8 ± 0.2
bT4-4TTGGGTGGTTTTGTGGGTGGGT53.2 ± 0.6−3.1 ± 0.256.8 ± 0.5−4.0 ± 0.3
bT5-4TTGGGTGGTTTTTGTGGGTGGGT45.5 ± 0.5−1.7 ± 0.150.1 ± 0.5−2.6 ± 0.1
bT6-4TTGGGTGGTTTTTTGTGGGTGGGT40.1 ± 0.5−0.8 ± 0.245.5 ± 0.3−1.8 ± 0.2
bT7-4TTGGGTGGTTTTTTTGTGGGTGGGT37.2 ± 0.4−0.1 ± 0.142.5 ± 0.9−1.1 ± 0.1
bT1-5TTGGGTGGGTGTGGTGGGT64.7 ± 1.0−5.3 ± 0.374.8 ± 0.5−7.4 ± 0.3
bT2-5TTGGGTGGGTGTTGGTGGGT45.5 ± 1.2−1.1 ± 0.457.2 ± 0.1−3.6 ± 0.1
bT3-5TTGGGTGGGTGTTTGGTGGGT34.2 ± 1.50.4 ± 0.244.9 ± 0.2−1.7 ± 0.5
bT4-5TTGGGTGGGTGTTTTGGTGGGT26.2 ± 1.0d35.6 ± 0.3−0.4 ± 0.1
bT5-5TTGGGTGGGTGTTTTTGGTGGGT22.0 ± 1.2d31.9 ± 1.50.4 ± 0.1
bT6-5TTGGGTGGGTGTTTTTTGGTGGGT18.6 ± 1.4d29.3 ± 1.31.0 ± 0.1
bT7-5TTGGGTGGGTGTTTTTTTGGTGGGT16.3 ± 0.4d26.5 ± 1.50.5 ± 0.2
bT1-6TTGGGTGGGTGGTGTGGGT63.2 ± 0.5−4.7 ± 0.271.8 ± 0.8−6.4 ± 0.2
bT2-6TTGGGTGGGTGGTTGTGGGT63.3 ± 0.8−4.9 ± 0.167.4 ± 0.6−5.9 ± 0.2
bT3-6TTGGGTGGGTGGTTTGTGGGT60.5 ± 0.6−4.5 ± 0.164.0 ± 0.6−5.2 ± 0.1
bT4-6TTGGGTGGGTGGTTTTGTGGGT49.6 ± 0.6−2.4 ± 0.254.3 ± 0.5−3.2 ± 0.3
bT5-6TTGGGTGGGTGGTTTTTGTGGGT41.6 ± 0.8−1.0 ± 0.148.1 ± 0.6−2.2 ± 0.1
bT6-6TTGGGTGGGTGGTTTTTTGTGGGT36.7 ± 0.5−0.2 ± 0.142.8 ± 0.3−1.2 ± 0.1
bT7-6TTGGGTGGGTGGTTTTTTTGTGGGT33.2 ± 0.90.5 ± 0.139.9 ± 1.1−0.6 ± 0.1
bT1-7TTGGGTGGGTGGGTGTGGT63.4 ± 0.5−4.8 ± 0.573.8 ± 0.2−7.0 ± 0.4
bT2-7TTGGGTGGGTGGGTGTTGGT47.0 ± 0.1−1.3 ± 0.557.2 ± 0.1−3.8 ± 0.4
bT3-7TTGGGTGGGTGGGTGTTTGGT31.9 ± 1.10.7 ± 0.243.6 ± 0.9−1.1 ± 0.2
bT4-7TTGGGTGGGTGGGTGTTTTGGT25.2 ± 1.21.6 ± 0.335.1 ± 0.6−0.1 ± 0.2
bT5-7TTGGGTGGGTGGGTGTTTTTGGT20.2 ± 0.31.7 ± 0.429.9 ± 0.80.7 ± 0.2
bT6-7TTGGGTGGGTGGGTGTTTTTTGGT15.2 ± 1.2d26.2 ± 0.61.1 ± 0.2
bT7-7TTGGGTGGGTGGGTGTTTTTTTGGTdd24.9 ± 0.9d
bT1-8TTGGGTGGGTGGGTGGTGT64.3 ± 0.5−4.0 ± 0.273.6 ± 0.4−6.6 ± 0.4
bT2-8TTGGGTGGGTGGGTGGTTGT58.5 ± 1.5−4.0 ± 0.265.6 ± 0.3−5.5 ± 0.5
bT3-8TTGGGTGGGTGGGTGGTTTGT56.3 ± 0.7−3.5 ± 0.560.5 ± 0.3−4.7 ± 0.4
bT4-8TTGGGTGGGTGGGTGGTTTTGT47.8 ± 1.5−1.1 ± 0.652.1 ± 1.2−2.8 ± 0.4
bT5-8TTGGGTGGGTGGGTGGTTTTTGT38.8 ± 1.2−0.2 ± 0.246.2 ± 0.1−1.5 ± 0.3
bT6-8TTGGGTGGGTGGGTGGTTTTTTGT34.9 ± 0.90.3 ± 0.143.8 ± 0.6−1.2 ± 0.5
bT7-8TTGGGTGGGTGGGTGGTTTTTTTGT33.3 ± 0.30.9 ± 0.442.7 ± 0.7−1.1 ± 0.5

aExperiments were performed in 10 mM Tris–HCl buffer containing 10 mM KCl (pH 7.4 at 37°C).

bExperiments were performed in 10 mM Tris–HCl buffer containing 10 mM KCl and 10 wt% PEG 200 (pH 7.4 at 37°C).

cDNA concentration used for the measurement was 5 μM. d(-) represents the values cannot be calculated as the buG4 structures were unstable at 37°C.

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