Author/Editor		Allikmets, R; Gerrard, B; Glavač, D; Ravnik-Glavač, M; Jenkins, NA; Gilbert, DJ; Copeland, NG; Modi, W; Dean, M
Title		Characterization and mapping of three new mammalian ATP-binding transporter genes from an EST database
Type		članek
Source		Mamm Genome
Vol. and No.		Letnik 6, št. 2
Publication year		1995
Volume		str. 114-7
Language		eng
Abstract		Analysis of the human expressed sequence tag (EST) database identified four clones that contain sequences of previously uncharacterized genes, members of the ATP-binding cassette (ABC) superfamily. Two new ABC genes (EST20237, 31252) are located at Chromosome (Chr) 1q42 and 1q25 respectively in humans, as determined by FISH; at locations distinct from previously mapped genes of this superfamily. Two additional clones, EST 600 and EST 1596, were found to represent different ATP-binding domains of the same gene, ABC2. This gene was localized to 9q34 in humans by FISH and to the proximal region of Chr 2 in mice by linkage analysis. All genes display extensive diversity in sequence and expression pattern. We present several approaches to characterizing EST clones and demonstrate that the analysis of EST clones from different tissues is a powerful approach to identify new members of important gene families. Some drawbacks of using EST databases, including chimerism of cDNA clones, are discussed.
Descriptors		ABC TRANSPORTERS CHROMOSOME MAPPING GENES, REITERATED GENES, STRUCTURAL MAMMALS AMINO ACID SEQUENCE CLONING, MOLECULAR DATABASES, FACTUAL DNA, COMPLEMENTARY GENE EXPRESSION MICE MICE, INBRED C57BL MOLECULAR SEQUENCE DATA MURIDAE SEQUENCE ALIGNMENT SEQUENCE HOMOLOGY, AMINO ACID