Follicle-stimulating hormone receptor in felids: intra- and interspecies variation.
Assisted reproductive technologies are increasingly applied to support breeding efforts for many endangered felids. To explain the highly variable responses among felids to exogenous gonadotropins (FSH, eCG), we analyzed a 567bp fragment spanning a hyper-variable region of the FSH receptor in the domestic cat (catFSHR) and nine wild felid species/subspecies (felFSHR). Phylogenetic analysis indicated that the newly sequenced felFSHRs, together with the bear FSHR, belong to the carnivore group closely related to the ungulate clade. Within Felidae, genetic distances were 0.0089 +/- 0.0018 for nucleotide and 0.0183 +/- 0.0044 for amino acid (aa) sequences. In pairwise comparisons among catFSHR and all new felFSHRs, similarity ranged from 98.6 to 99.5% for nucleotides and from 97.4 to 98.9% for aa. Besides interspecies variability, intraspecies variation was also detected on both the cDNA and the protein level. There were no indications for an expression of tissue-specific isoforms of FSHR in testis and ovary.
Leibniz-Institute for Zoo and Wildlife Research, Postfach 601103, D-10252 Berlin, Germany. neubauer@izw-berlin.de
Katrin
K
Neubauer
Katarina
K
Jewgenow
Jörns
J
Fickel
D000595:Amino Acid Sequence; D000818:Animals; D000940:Antigenic Variation; D001483:Base Sequence; D045989:Felidae / Q000235:genetics / Q000276:immunology / Q000502:physiology*; D005260:Female; D008297:Male; D008969:Molecular Sequence Data; D010802:Phylogeny; D011962:Receptors, FSH / Q000235:genetics / Q000276:immunology / Q000502:physiology*; D020133:Reverse Transcriptase Polymerase Chain Reaction / Q000662:veterinary; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D013045:Species Specificity
D011962:Receptors, FSH