The tv-a gene was cloned in 1993 by Bates, Young, and Varmus.  Due to alternative splicing, two gene products are predicted:  GPI-linked and trans-membrane.  They are, respectively, referred as tv-a800 and tv-a950 because of the nucleotide sizes of cDNAs. 

tv-a800  (Genebank ACCESSION L22752):

1 tgctgcccgc tgtgtagtcg cggcgctgtg cgcggtaccg acatggcgcg gctgctgccc 

61 gcgctgctgc tgctgctgct gcccggtaac gtgaccggta acgggtccgg taacggttct 

121 ttgtcccgtt gcccccccgg tcagttccgc tgctcggagc cgcccggtgc ccacggggag 

181 tgttacccgc aggactggct gtgcgacgga caccccgact gcgacgacgg gcgggacgag 

241 tggggctgcg ggaccagcgc gacccccgcg gtgcccacgg acaacggcac agaggctccc 

301 actgtccctg ctcctggacg tgctctgcca gccaggaatc acggccgcat gtggatgctg 

361 atcactgcag ggatcttttg ctgtgagctg gtgagatggg actgaactgc tctgcctgct 

421 gctcaccacg gaacctgact caatttggac atgagctctc aaatctggtt tgctgttaca 

481 ctcaaatgct cccattggaa ataatgggtc tggatggtgg cacccaaaat agggcaggac 

541 cttccccagg gctgtgaaat cacccctcct aaaggtggtg gaaattccct cactcttttt 

601 gcctacaagg actattacta ttattaaagc tgcttctcat caccgtggcc tttaacctaa 

661 aggtttgatc ctccatggag gtgcagtgcc aggtcctgtt ctaccacccc ctcagcagag 

721 ctcactgagc ccacatcaga tgtgcactcc ctgagcctcc ttttgctgga ggctttgaat 

781 gttcggtgtc tcttgctttc agcttgaaat actgaattc

tv-a950 (Genebank ACCESSION L22753):

1   tgctgcccgc tgtgtagtcg cggcgctgtg cgcggtaccg acatggcgcg gctgctgccc 

61 gcgctgctgc tgctgctgct gcccggtaac gtgaccggta acgggtccgg taacggttct 

121 ttgtcccgtt gcccccccgg tcagttccgc tgctcggagc cgcccggtgc ccacggggag 

181 tgttacccgc aggactggct gtgcgacgga caccccgact gcgacgacgg gcgggacgag 

241 tggggctgcg ggaccagcgc gacccccgcg gtgcccacgg acaacggcac agaggctccc 

301 actgtccctg ctcctggacg tgctctgcca gccaggaatc acggccgcat gtggatgctg 

361 atcactgcag tgctcctgtg ctgcctggta gctgtgggtg gtatcgctgc atgggggaag 

421 tccaaagcaa aaagcaggtc tgacatcttc agtcttgaaa gcgcatccaa ggagctgctg 

481 gtgcctgaca agagccaggc agacttgttc tcctgagagg gatcttttgc tgtgagctgg 

541 tgagatggga ctgaactgct ctgcctgctg ctcaccacgg aacctgactc aatttggaca 

601 tgagctctca aatctggttt gctgttacac tcaaatgctc ccattggaaa taatgggtct 

661 ggatggtggc acccaaaata gggcaggacc ttccccaggg ctgtgaaatc acccctccta 

721 aaggtggtgg aaattccctc actctttttg cctacaagga ctattactat tattaaagct 

781 gcttctcatc accgtggcct ttaacctaaa ggtttgatcc tccatggagg tgcagtgcca 

841 ggtcctgttc taccaccccc tcagcagagc tcactgagcc cacatcagat gtgcactccc 

901 tgagcctcct tttgctggag gctttgaatg ttcggtgtct cttgctttca gcttgaaata 

961 ctgaattc

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