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Conserved sequence ...
Conserved sequence elements in K promoters from mice and humans : Implications for transcriptional regulation and repertoire expression
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- Bemark, Mats (författare)
- Lund University,Lunds universitet,Immunologi,Forskargrupper vid Lunds universitet,Lärare vid läkarprogrammet,Avdelningen för läkarprogrammets kursadministration,Utbildningsenheten,Kansli M,Medicinska fakulteten,Immunology,Lund University Research Groups,Teachers at the Medical Programme,Division of Course Administration for the Medical Programme,The Education Office,Faculty Office - BMC,Faculty of Medicine
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- Liberg, David (författare)
- Lund University,Lunds universitet,Immunologi,Forskargrupper vid Lunds universitet,Immunology,Lund University Research Groups
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- Leanderson, Tomas (författare)
- Lund University,Lunds universitet,Immunologi,Forskargrupper vid Lunds universitet,Immunology,Lund University Research Groups
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(creator_code:org_t)
- Springer Science and Business Media LLC, 1998
- 1998
- Engelska.
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Ingår i: Immunogenetics. - : Springer Science and Business Media LLC. - 0093-7711 .- 1432-1211. ; 47:3, s. 183-195
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- Promoter region sequences of human and mouse Igk-V genes were aligned and found to be conserved for about 200-300 base pairs (bp) within subgroups/families. No promoter similarity was found between IGKV promoters from different human subgroups. Related mouse Igk-V gene families were conserved in the promoter region but no similarity was evident when promoters from unrelated Igk-V gene families were compared. Most of the human IGKV promoter subgroups were shown to have mouse counterparts with a similarity region that extended about 150 bp upstream of the translational start codon. All promoters contained an octamer sequence element. The consensus octamer/decamer sequence was favored but only seven residues within the octamer element were strictly conserved. Furthermore, there was also sequence conservation immediately 3' of the octamer where either an A or a G residue was conserved. In addition, other DNA elements were also conserved both within the Igk-V subgroups/families and between mouse and human promoters from related subgroups/families. In several of the subgroups/families an E box of the E2A type was conserved 5' of the octamer and a CCCT element was conserved within the IGKV subgroup II and its related mouse Igk-V families. We conclude from this study that conservation of additional sequence elements besides the octamer is a common feature in Igk-V promoters but that distinct elements are conserved only within a given subgroup/family. Thus, the conservation appears to have operated at the level of function rather than at the level of recognition sequence for defined transcription factors.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Immunologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Immunology in the medical area (hsv//eng)
Nyckelord
- E-box
- Immunoglobulin
- Octamer
- Promoter
- Transcription
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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