A novel germ-line JK transcript starting immediately upstream of JK1.
نویسندگان
چکیده
Germ-line transcripts of the immunoglobulin (Ig) and T cell receptor loci are thought to be involved in the control of V gene rearrangement by rendering these loci accessible to the recombinases. We have analyzed the transcriptional activity of germ-line K alleles in two bone marrow-derived Abelson-murine leukemia virus transformed pre-B cells: 300-19, a null cell line, and P8 a mu-producing line. We found a novel germ-line JK transcript starting immediately upstream of JK1 and spliced to CK. The potential role of this transcript in the opening of the Ig K locus as well as in the ordered usage of JK segments is discussed.
منابع مشابه
Partial deletion in the JK locus causing a Jk(null) phenotype.
A new alteration of the blood group JK*A allele was identified in a Jk(null) patient from Tunisia with an allo-anti-Jk3 in her serum. Southern blot and exon mapping analyses revealed an internal deletion within the Kidd (JK) locus encompassing exons 4 and 5. Sequence analysis of the Jk transcript showed that exons 4 and 5 were missing but were replaced by a 136-base-pair (bp) intron 3 sequence ...
متن کاملIdentification of Novel Fusion Genes in Testicular Germ Cell Tumors.
Testicular germ cell tumors (TGCT) are the most frequently diagnosed solid tumors in young men ages 15 to 44 years. Embryonal carcinomas (EC) comprise a subset of TGCTs that exhibit pluripotent characteristics similar to embryonic stem (ES) cells, but the genetic drivers underlying malignant transformation of ECs are unknown. To elucidate the abnormal genetic events potentially contributing to ...
متن کاملDifferent 3' untranslated regions target alternatively processed hu-li tai shao (hts) transcripts to distinct cytoplasmic locations during Drosophila oogenesis.
Cytoplasmic mRNA localization is one method by which protein production is restricted to a particular intracellular site. We report here a novel mechanism for localization of transcripts encoding distinct protein isoforms to different destinations. Alternative processing of transcripts produced in the Drosophila ovary by the hu-li tai shao (hts) locus introduces distinct 3' untranslated regions...
متن کاملMinor-myosin, a novel myosin isoform synthesized preferentially in Drosophila testis is encoded by the muscle myosin heavy chain gene
Searching for structural proteins involved in spermatogenesis of Drosophila, we found a novel myosin isoform in the testis of Drosophila hydei and D. melanogaster. The transcript encoding this isoform, which we called 'minor-myosin', initiates within the intron between exons 12 and 13 of the muscle myosin heavy chain (mMHC) gene. Minor-myosin contains a common myosin tail but no ordinary myosin...
متن کاملGerm-line transcripts of the immunoglobulin lambda J-C clusters in the mouse: characterization of the initiation sites and regulatory elements.
Transcription of unrearranged immunoglobulin gene segments strongly correlates with their accessibility to the V(D)J recombination machinery. The regulatory mechanisms governing this germ-line transcription are still poorly defined. In order to identify new regulatory elements, we first carried out a detailed characterization of the transcription initiation sites for the J-C germ-line transcrip...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Nucleic acids research
دوره 17 17 شماره
صفحات -
تاریخ انتشار 1989