Term Name:	five_prime_cis_splice_site
Synonyms:	5' splice site, donor, donor splice site, five prime splice site, splice donor site
Definition:	Intronic 2 bp region bordering the exon, at the 5' edge of the intron. A splice_site that is downstream_adjacent_to exon and starts intron.
Ontology:	Sequence Ontology [SO:0000163]