. ORF: the presence of open reading frame,e.g. "Yes", "No", "Unknown"
. Intron-Encoded Protein: you can retrieve information whether intron
encodes a protein by entering "Yes" or "No", or whether intron
encodes a special protein by typing the protein name, e.g. "I-CreII",
"Endonuclease"
. Nuclear Splicing Factor: you can retrieve information whether splicing factor
involved in intron splicing by typing "Yes" or "No", or whether a
particular splicing factor participates in intron splicing by typing the
name of factor, e.g. "cyt18"
. Genome: cellular location of the intron, e.g. "mitochondria", "chloroplast"
. Twintron: indicate whether it's a twintron, e.g. "Yes".
. Self-splice: indicate the self-splicing ability of the intron, e.g. "Yes", "No", "Unkown"
. Mobility: indicate the intron mobility, e.g. "Yes", "No", "Unknown"
. Insertion Site: The number in the field indicates the nucleotide position at which the intron is inserted. For ribosomal RNA introns, the starting point (position 1) is the first nucleotide in the mature RNA; for other introns, the starting point is the initiation codon AUG (A is position 1) in the coding sequence.
. Sequences: you can query by entering partial or whole sequence of a
intron, e.g. "gaatcttagttttttaag"
2) Reference Information:
. Author: the name of a author, e.g. "Herrin"
. Title: the title of an article, e.g. "RNA splicing in Chlamydomonas chloroplasts"
. Journal: indicate a journal name, e.g. "Current Genetics", "EMBO"
All combined searches are boolean "AND". A query first returns a list of introns which contains
limited intron information. The user can obtain more detailed information about certain introns
by clicking the intron name in that list.