Abstract：
:Genes encoding the horse (Equus caballus) T-cell receptor beta chain (TCRB) were cloned and characterized. Of 33 cDNA clones isolated from the mesenteric lymph node, 30 had functionally rearranged gene segments, and three contained germline sequences. Sixteen unique variable segments (TCRBV), 14 joining genes (TCRBJ), and two constant region genes (TCRBC) were identified. Horse TCRBV were grouped into nine families based on similarity to human sequences. TCRBV2 and TCRBV12 were the most commonly represented horse families. Analysis of predicted protein structure revealed the presence of conserved regions similar to those seen in TCRB of other species. A decanucleotide promoter sequence homologous to those found in humans and mice was located in the 5' untranslated region of one horse gene. Germline sequences included the 5' region of the TCRBD2 gene with flanking heptamer/nonamer recombination signals and portions of the TCRBJ2-C2 intron. Southern blot hybridizations demonstrated restriction fragment length polymorphisms at the TCRBC locus among different horse breeds.
journal_name
Immunogeneticsjournal_title
Immunogeneticsauthors
Schrenzel MD,Watson JL,Ferrick DAdoi
10.1007/BF00188177subject
Has Abstractpub_date
1994-01-01 00:00:00pages
135-44issue
2eissn
0093-7711issn
1432-1211journal_volume
40pub_type
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