title: NATsDB: Natural Antisense Transcripts DataBase.
abstract: Natural antisense transcripts (NATs) are reverse complementary at least in part to the sequences of other endogenous sense transcripts. Most NATs are transcribed from opposite strands of their sense partners. They regulate sense genes at multiple levels and are implicated in various diseases. Using an improved whole-genome computational pipeline, we identified abundant cis-encoded exon-overlapping sense-antisense (SA) gene pairs in human (7356), mouse (6806), fly (1554), and eight other eukaryotic species (total 6534). We developed NATsDB (Natural Antisense Transcripts DataBase, http://natsdb.cbi.pku.edu.cn/) to enable efficient browsing, searching and downloading of this currently most comprehensive collection of SA genes, grouped into six classes based on their overlapping patterns. NATsDB also includes non-exon-overlapping bidirectional (NOB) genes and non-bidirectional (NBD) genes. To facilitate the study of functions, regulations and possible pathological implications, NATsDB includes extensive information about gene structures, poly(A) signals and tails, phastCons conservation, homologues in other species, repeat elements, expressed sequence tag (EST) expression profiles and OMIM disease association. NATsDB supports interactive graphical display of the alignment of all supporting EST and mRNA transcripts of the SA and NOB genes to the genomic loci. It supports advanced search by species, gene name, sequence accession number, chromosome location, coding potential, OMIM association and sequence similarity.
authors.affiliation: Center for Bioinformatics, National Laboratory of Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University Beijing 100871, PR China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jiongtang
authors.initials: J
authors.lastname: Li
authors.forename: Lei
authors.initials: L
authors.lastname: Kong
authors.forename: Ge
authors.initials: G
authors.lastname: Gao
authors.forename: Qing-Rong
authors.initials: QR
authors.lastname: Liu
authors.forename: Liping
authors.initials: L
authors.lastname: Wei
mesh_terms: D000818:Animals; D001483:Base Sequence; D030561:Databases, Nucleic Acid; D004285:Dogs; D005796:Genes; D006801:Humans; D020407:Internet; D051379:Mice; D008969:Molecular Sequence Data; D016372:RNA, Antisense / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000737:chemistry; D051381:Rats; D014584:User-Computer Interface
chemical_list: D016372:RNA, Antisense; D012333:RNA, Messenger