The human solute carrier SLC41A1 belongs to a novel eukaryotic subfamily with homology to prokaryotic MgtE Mg2+ transporters

被引:76
作者
Wabakken, T [1 ]
Rian, E [1 ]
Kveine, M [1 ]
Aasheim, HC [1 ]
机构
[1] Norwegian Radium Hosp, Dept Immunol, N-0310 Oslo, Norway
关键词
eukaryotic gene family; prokaryotic MgtE;
D O I
10.1016/S0006-291X(03)01030-1
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
We report here the first identification and structural characterization of a eukaryotic protein with homology to the bacterial MgtE family of potential Mg2+ transporters. This human protein, denoted solute carrier family 41 member 1 (SLC41A1), consists of 5 13 amino acids with an estimated molecular weight of 56 kDa. Computer analysis of the protein structure reveals that the protein consists of 10 putative transmembrane domains and includes two distinct domains highly. homologous to the integral membrane part of the bacterial MgtE protein family. The gene encoding SLC41A1 is found on chromosome 1 (1q31-32) and the protein coding sequence is found on 10 exons. A 5-kb long transcript is identified in various human tissues with highest expression levels in heart and testis. We have also identified 10 SLC41A1 homologs in Homo sapiens, Mus musculus, Drosophila melanogaster, Anopheles gambiae, and Caenorhabditis elegans, and propose that these hypothetical proteins belong to a novel eukaryotic gene family. (C) 2003 Elsevier Science (USA). All rights reserved.
引用
收藏
页码:718 / 724
页数:7
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