TCDB is operated by the Saier Lab Bioinformatics Group
TRANSPORTERS FROM HUMANS:
Transporter Information:
Name: ATPase, Class I, type 8B, member 2
Symbol: ATP8B2
TC: 3.A.3.8.1
Locations: 3
Aliases: ATPID, KIAA1137
GenBank: AB032963
Swiss-Prot: P98198
Accession Number: NM_020452
GDBGDB:10796909
LocusLink57198
OMIM605867
PubMed (10574461): Hirosawa M, Nagase T, Ishikawa K, Kikuno R, Nomura N, Ohara O. Characterization of cDNA clones selected by the GeneMark analysis fromsize-fractionated cDNA libraries from human brain.DNA Res. 1999 Oct 29;6(5):329-36. PMID: 10574461 [PubMed - indexed for MEDLINE]

We have conducted a sequencing project of human cDNAs which encode large proteins in brain. For selection of cDNA clones to be sequenced in this project, cDNA clones have been experimentally examined by in vitro transcription/translation prior to sequencing. In this study, we tested an alternative approach for picking up cDNA clones having a high probability of carrying protein coding region. This approach exploited 5'-end single-pass sequence data and the GeneMark program for assessing protein-coding potential, and allowed us to select 74 clones out of 14,804 redundant cDNA clones. The complete sequence data of these 74 clones revealed that 45% of them encoded proteins consisting of more than 500 amino acid residues while all the clones thus selected carried possible protein coding sequences as expected. The results indicated that the GeneMark analysis of 5'-end sequences of cDNAs offered us a simple and effective means to select cDNA clones with protein-coding potential although the sizes of the encoded proteins could not be predicted.

PubMed (11015572): Halleck MS, Lawler JF JR, Blackshaw S, Gao L, Nagarajan P, Hacker C, Pyle S,Newman JT, Nakanishi Y, Ando H, Weinstock D, Williamson P, Schlegel RA. Differential expression of putative transbilayer amphipath transporters.Physiol Genomics. 1999 Nov 11;1(3):139-50. PMID: 11015572 [PubMed - indexed for MEDLINE]

The aminophospholipid translocase transports phosphatidylserine and phosphatidylethanolamine from one side of a bilayer to another. Cloning of the gene encoding the enzyme identified a new subfamily of P-type ATPases, proposed to be amphipath transporters. As reported here, mammals express as many as 17 different genes from this subfamily. Phylogenetic analysis reveals the genes to be grouped into several distinct classes and subclasses. To gain information on the functions represented by these groups, Northern analysis and in situ hybridization were used to examine the pattern of expression of a panel of subfamily members in the mouse. The genes are differentially expressed in the respiratory, digestive, and urogenital systems, endocrine organs, the eye, teeth, and thymus. With one exception, all of the genes are highly expressed in the central nervous system (CNS); however, the pattern of expression within the CNS differs substantially from gene to gene. These results suggest that the genes are expressed in a tissue-specific manner, are not simply redundant, and may represent isoforms that transport a variety of different amphipaths.