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Table 3 PCR verification of selected introns that were alternatively spliced

From: cDNA sequences reveal considerable gene prediction inaccuracy in the Plasmodium falciparum genome

Gene ID

Ch

Forward primer

Reversed primer

Gen

Spl

Comments

PFB0260w

2

TCAAACACACGTTACACCT

ATGACAATACCTTCTAAGG

242

102

Confirmed

PFB0305c

2

ACCTTTTGTTAATTATGGA

CCACCTTCTCCTTTTTCG

255

135

Confirmed

PFB0177c

2

ACTAATGGTAGAATAGGTG

TTTCTCCATTTTGTATATCG

373

161

Confirmed

PFB0535w

2

CAAAGATAAAATGGTAATGTT

ATTCCTATTATAGTGTGTGT

507

297/243

No 243-bp band

PFC0371w

3

CCTACCTTCTATTTACAAAT

ACTTGTTGCTCTGATATAAT

301

204

No 204-bp band

PFD0810w

4

GCTGTGAAAAAAGAAAACAA

TTGTTTTCTTTTTTCACAGC

320

174

No products

PFD0895c

4

TTGATAACAATCCTTTAAGC

AATTCGTAATAATCATCTCC

374

205

Confirmed

PFE1540w

5

GATCCTGAAATTGTTTGTG

ATGGCCAAAATGTTTCACA

393

328/283/210

Confirmed

MAL8P1.81

8

GCTGACATATTTATCTTATG

CATATAAGTATTCATGCATG

303

147

Confirmed

PF10_0096

10

ATATTATCGATATTGTCTATATTC

CTTGCTTTGTTTGGCTTCCA

441

182

Confirmed/antisense

PF10_0170

10

TATATTTGTCCTCAGTGC

CTTCCATATCAGATGCCA

300

135

90-bp band, not 135

PF10_0017

10

GGATAAATAGTTTTTTGCTT

CTCAGACAATGTACGCATA

410

263

Confirmed

PF10_0117

10

ATTGGAATTTAACTAGCAAC

TTCATAAGAGTGTTGTTCG

330

134

Confirmed

PF10_0213

10

GGTGCGAATAATAAAGTAG

CTACTTTGTTATTATCTCC

349

229

Add'l 150-bp band

PF10_0247

10

AATTACAAACAATTTGAGGG

TTCATTTTTCAAAAATGCGG

383

152

No 383-bp band

PF10_0258

10

AAAGACGAGGAACTTAATAC

CTCTGATTCTTTTATGAAAG

270

150

Confirmed

PF10_0415

10

CACCAATTTATAAAAGAAGAA

GGCAATAAAAAAGCCTGTTA

370

183

Confirmed

PF11_0292

11

AAGATGACCAACAAGAAGAA

TTATAGTACTCAATAACCTG

340

153

Confirmed

PF11_0377

11

CCGAAAAGGATAAGAAGAAG

TGATTATATGCTGCATATAC

1425

168

No 1425-bp band

PF11_0167

11

TAAGAAATTATGTTCCCAAT

TTTTTCTCCTACACAAGTGC

354

152

Confirmed

PF11_0405

11

TGAACTTAATACACATACGT

ACAGTATCTGAAGGATCTGT

201

130

No 130-bp band

PFL0020w

12

TTCGATATATCATTCCATTC

AAACAGCTACTAGTTGTCC

261

78

No 78-bp band

PFL0290w

12

CTTTATATTATCCAACAACAC

TTGTAATTACTTATAGGAGC

454

167

No 167-bp band

PFL0580w

12

GATGCAATATTAGGTAGACT

ACTAAAGATTAGGTTAACAC

294

193

Confirmed

PFL0890c

12

GAAATGCTCAACAAATTTGA

ACAGATATTATGGGAATTTC

255

130

Confirmed

MAL13P1.130

13

GTATCCAGAAATATTTTTTAC

GTATCAAAAATCCAACACGTA

800

303

No 303-bp band

MAL13P1.183

13

CTCCTAGAAATCCTAGATAT

GACTATGCAGTTTTTTTTATC

315

311

Add'l ~90-bp band

MAL13P1.51

13

CATTTATTGAATGCTCAGC

GTAGTAATATTCTCTCCTG

180

46

Confirmed

MAL13P1.80

13

CCAAAAAAGGACCTAATAAA

TATATATATGCACACGACAT

376

219/150

No 150 bp band

PF13_0082

13

CGAAGTGACAAAAAAAAGGA

CAGAATTTTTCCTATTATCG

294

118

Confirmed

PF13_0224

13

CTGATTTGTTTTTTCAACAAT

GAGTTATCTATTTTTTTAACC

351

152

Confirmed

MAL13P1.195

13

GAAAATGTCTGTCTTGTCAA

GCGTTCATATCGTCAAAAGA

297

179

Confirmed

MAL13P1.253

13

TTTTTACGAACAAAACGGTT

CTTTTGTTTGATCTAATACC

215

117

Confirmed

PF13_0220

13

AGTCATATCAAAAAATAGCT

GTACTTGTCTGATCTTTCTT

284

123/167

Confirmed

PF13_0301

13

AAAAATGAATGGAGTCCAGC

GCTGTTTTTAAATAAAGGGA

243

146

Confirmed

PF14_0434

14

GGATAGAAGAAACTATAACC

ATGCTATCATACTTACTGG

206

104

Confirmed

PF14_0779

14

CCTGATATGCGTGAAATT

TTTTTTCAATATTGTCGTACC

525

90

No 525-bp band

PF14_0338

14

AAAACAAGAATTTATCACGG

GATTCATTCCTGAATGGTCT

727

116

Confirmed

PF14_0488

14

AAAAAAAGGTCTACAAAAGC

TTGTTAAAATATTCCAAGGC

230

92

Confirmed

PF14_0576

14

GCACAATTTGAAAGAAAATT

ACTCGTGATGTAAATTTTCA

629

230

No 629-bp band

PF14_0787

14

CCTTTATTCATATGTGGAAT

GCAAGAGAAAATGGTTTAATAC

585

120

Add'l genomic bands

PF14_0790

14

GAATAGGAAAATATGCCAAG

GAATTATTACTATTCATCAC

239

111

Confirmed

  1. Ch, chromosome; Gen, expected sizes in base pair from genomic DNA; Spl, expected sizes in base pair if introns are spliced out. PFL0020w has a cDNA with 78 bp intron having GT-AG sites inside an ORF, but no spliced band was detected using PCR. Similarly, PFL0290w has a 287 bp gap without GT-AG sites; this gap was not confirmed. Primers for PFE1540 cover two introns, so multiple forms were expected. Indeed, three transcripts of different sizes were found in one of the introns.