Inventory of the cichlid olfactory receptor gene repertoires: identification of olfactory genes with more than one coding exon

Table 1 OR genes identified in the five cichlid and five fish model genomes

	O. niloticus	H. burtoni	M. zebra	N. brichardi	P. nyererei	D. rerio	G. aculeatus	O. Latipes	T. rubripes	T. nigroviridis
1 coding exon	146	78	94	62	81	143 [16, 17]	78^(a)	73^(a)	40 [16, 17]	42^(a)
>1 coding exon	12	12	8	7	7
Pseudo	6	6	11	12	8	10	46	28	54
	+1f	+3e	+2e	+1e	+3e
	+1f	+3e	+2e	+1e	+1 s
Edge	100	50	28	36	32
Edge	+1 s	50	28	36	+1 s
Fragment	0	1	0	3	0

^(a)From a larger set of OR sequences retrieved from ENSEMBL and GENBANK, we characterized a subset of true OR genes by multiple alignment of AA sequences, phylogenic tree construction and BLAST analysis. DNA samples used by the BROAD institute to determine the genomic sequences were for each species extracted from a single fish with 2 N chromosomes.

ISSN: 1471-2164