Table 10 Clustering analysis of RNA aptamers in ddPCR-driven SELEX to identify related sequence and structure groups.

From: High throughput sequencing analysis of RNA libraries reveals the influences of initial library and PCR methods on SELEX efficiency

 

Group

CCR7 aptamer

30-nt random sequence

Reads of each group (top 50 unique sequences)

Frequencies of each group (in top 1000 unique sequences)

 

Initial

library

Round 1

Round 3

Round 5

Round 6

Round 7

Initial

library

Round 1

Round 3

Round 5

Round 6

Round 7

ddPCR-driven

SELEX

1

C-1A

TTTCGTCCTGAGTTCGTGTCCTCGTCTGTG

155

113

191

1363

2,668

5,801

4.79%

3.36%

5.75%

18.81%

17.41%

16.29%

2

DD9-2

TTACTATTCAACTCGGCTCTTCGTTCTGTG

0

0

0

131

103

207

0.00%

0.00%

0.00%

1.81%

0.67%

0.58%

3

DD9-3

TCCTGGTGTTGTTGGTTGTCTGCGCTGCCC

0

0

0

0

45

147

0.00%

0.00%

0.00%

0.00%

0.29%

0.41%

DD9-7

TCCCATCGTTGAAGTTGATCTGGCCCGCCA

0

0

0

0

0

110

0.00%

0.00%

0.00%

0.00%

0.00%

0.31%

DD9-8

TCCCGAAGCATGTCGGTTGTCTGTGCGCGC

0

0

0

0

0

115

0.00%

0.00%

0.00%

0.00%

0.00%

0.32%

4

DD9-5

TCCCGGTGTGTAAGTTGTCTGCTGCCTGGC

0

0

0

0

40

105

0.00%

0.00%

0.00%

0.00%

0.26%

0.29%

5

DD9-9

TGCCGCACATTAGTCTCTGGTTGCCCACGC

0

0

0

0

0

60

0.00%

0.00%

0.00%

0.00%

0.00%

0.17%

6

DD9-14

TCCGCGAGTTCATTGAGTTGTTGCGCCCCA

0

0

0

0

25

62

0.00%

0.00%

0.00%

0.00%

0.16%

0.17%

7

C-6

TCCATCGTCTCTTATCGTCTCTTGTCGCGC

0

0

0

17

41

0

0.00%

0.00%

0.00%

0.23%

0.27%

0.00%

Others

 

Orphan sequences

186

187

192

312

828

2078

5.75%

5.56%

5.78%

4.30%

5.40%

5.84%

   

Total Reads of all groups

341

300

383

1823

3750

8685

       
  1. After alignment of the top 50 sequences, several groups of RNA aptamers were identified. The representative RNA aptamers, the reads of each group, and their frequencies in the top 1000 unique sequences were listed. Only the 30-nt random sequences of the aptamer core regions (5′-3′) are indicated.