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Four noncoding RNAs from the RAY1/ST7 gene locus. Complex gene locus with a large number of coding and noncoding isoforms. ST7OT1 & 2 are antisense to ST7. ST7OT3 & 4 are on the sense strand. ST7OT1 - ~2kb unspliced antisense transcript that initiates in intron 1 of ST7, covers the first exon and terminates in the ST7 promoter region. Polyadenylated. Nb: it also overlaps exon 1 of ST7OT4. ST7OT2 - Spliced antisense transcripts. Multiple isoforms that share either some 5' or some 3' exons. Isoforms are between 900-1300 bp, with 4-6 exons and polyadenlyated. ST7OT3 - Spliced ~1kb transcript. Begins in intron 10 of ST7, shares exons 11-13 and sometimes 14 & 15 with ST7 plus has a number of unique exons. Some exons may also act as a alternative 3' end for ST7. ST7OT4 - Multiple spliced transcripts within the long first intron of ST7. However, Refseq ST7OT4 transcript may be protein coding. Transcription begins just ~200bp downstream from the end of first ST7 exon.
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ST7OT1 - abundantly expressed in testis, also expressed in cerebellum, skeletal muscle, uterus, cerebellum, spinal cord, fetal brain, and prostate. ST7OT2 - testis, fetal brain, cerebellum, mammary gland, fibroblasts. ST7OT3 - expression only detected in cerebellum. ST7OT4 - no expression detected.
ST7OT1 - some conserved sequence with mouse, most of this is where ST7OT1 overlaps the first exon of ST7 however. ST7OT2 - 3' end of some isoforms shows some conservation with mouse. ST7OT3 - some conserved sequence, most of this is shared exons with ST7 though. ST7OT4 - sequence not conserved with mouse.
ST7OT1 - NCBI Gene ID: 93653. ST7OT2 - NCBI Gene ID: 93654. ST7OT3 - NCBI Gene ID: 93655. ST7OT4 - NCBI Gene ID: 338069
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Allelic Information and Variation
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Labs working on this lncRNA
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