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Table 1 Properties of retained and constitutive introns. For all intron parameters the medians are reported. The last two columns report the statistical significance of the differences of the distributions by the Kolmogorov-Smirnov test (KS) and Student's t-test (ST); n/s – non significant.

From: Computational analysis of splicing errors and mutations in human transcripts

  introns   
  Retained Constitutively spliced KS ST
Set size 1197 137580   
Intron length (nucleotides) 337 1481 <10-15 <10-15
Splice site scores
Acceptor site of the of 5'-exon 18,60 19,09 <10-15 <10-11
Donor site 18,17 18,80 <10-15 <10-15
Acceptor 18,03 19,06 <10-15 <10-15
Donor site of 3'-exon 18,74 18,79 n/s n/s
Cis-acting elements (candidate sites per nucleotie)
ESEfinder: SC35 0,046 0,034 <10-15 <10-15
ESEfinder: SF2/ASF 0,040 0,028 <10-15 <10-15
ESEfinder: SRp40 0,041 0,038 <10-15  
ESEfinder: SRp55 0,022 0,022 <10-15 n/s
RESCUE-ESE 0,050 0,068 <10-15 <10-15
PESE 0,043 0,035 <10-15 <10-15
PESS 0,013 0,048 <10-15 <10-15
Relative position
by ordinal number 0,6 0,5 <10-15* <10-15
by gene 0,671 0,597 <10-9 <10-15
by mRNA 0,446 0,354 <10-15 <10-15
by mRNA w/o last exon 0,688 0,575 <10-15 <10-15
  1. * Chi-square test