Homologous mutations in two diverse sulphate transporters have similar effects

FEBS Letters

Khurana, Ooma K¹  Shelden, Megan C¹  Coupland, Lucy A¹  Howitt, Susan M¹ 

[1] Division of Biochemistry and Molecular Biology, The Faculties, Australian National University, Canberra, A.C.T. 0200, Australia

关键词: Sulfate transporter;    Site-directed mutagenesis;    Diastrophic dysplasia;    Transmembrane helix;   

DOI  :  10.1016/S0014-5793(00)01783-X

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Mutations in the human sulphate transporter gene, DTDST, have been implicated in several diseases. Analysis of affected patients has linked disease symptoms to faulty sulphate transporter activity. We have reproduced two of these mutations in SHST1, a homologous member of the family isolated from the tropical legume, Stylosanthes hamata. Both mutations significantly reduce sulphate transport activity of SHST1. These results indicate that conserved residues between distinct members of the family may share essential roles in structure or function. The results also suggest that putative helix 9 may be important for stability and/or trafficking of SHST1 to the plasma membrane.

【 授权许可】

Unknown