Abstract：
:Toxocara canis is an intestinal nematode of canids with a worldwide distribution, causing an important but neglected parasitic zoonosis in humans. Aquaporins (AQP) are a family of water channel proteins, which function as membrane channels to regulate water homeostasis. In this study, the coding sequence of aquaporin-1 gene of T. canis (Tc-aqp-1) was cloned and characterized. The obtained Tc-aqp-1 coding sequence was 933 bp in length, which predicted to encode 311 amino acids. Two conserved asparagine-proline-alanine (NPA) motifs were identified in the multiple sequence alignments. Phylogenetic analysis revealed the closest relationship between T. canis and Opisthorchis viverrini based on aquaporin-1 amino acid sequence. A structure was predicted with ligand binding sites predicted at H93, N95, N226, L94, I79, and I210 and with active sites predicted at I256 and G207. Gene Ontology (GO) annotations predicted its cellular component term of integral component of plasma membrane (GO: 0005887), molecular function term of channel activity (GO: 0015250), and biological process term of water transport (GO: 0006833). Tissue expression analysis revealed that the Tc-aqp-1 was highly expressed in the intestine of adult male. The findings of the present study provide the basis for further functional studies of T. canis aquaporin-1.
journal_name
Parasitol Resjournal_title
Parasitology researchauthors
Luo YF,Hu L,Ma GX,Luo YL,Yin SS,Xiong Y,Zhu XQ,Zhou RQdoi
10.1007/s00436-016-5129-8subject
Has Abstractpub_date
2016-09-01 00:00:00pages
3631-6issue
9eissn
0932-0113issn
1432-1955pii
10.1007/s00436-016-5129-8journal_volume
115pub_type
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