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Characterization and developmental expression of beta tubulin genes in Drosophila melanogaster.
Author(s) -
Bialojan S.,
Falkenburg D.,
RenkawitzPohl R.
Publication year - 1984
Publication title -
the embo journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.484
H-Index - 392
eISSN - 1460-2075
pISSN - 0261-4189
DOI - 10.1002/j.1460-2075.1984.tb02170.x
Subject(s) - biology , drosophila melanogaster , gene , genetics , tubulin , drosophilidae , drosophila (subgenus) , gene expression , melanogaster , microtubule
Genomic clones containing beta tubulin sequences were isolated from a lambda library of Drosophila melanogaster. In situ hybridization localized three genes to 56D and 60B on chromosome 2 as well as to 85D on chromosome 3. The latter was known through genetic analysis to be specifically expressed during spermatogenesis. The genomic clone, pTu85, derived from this region contains one complete beta tubulin coding region as well as the 3′ end of an additional so far unidentified beta tubulin gene. Genomic Southern hybridizations reveal a total of five fragments with beta tubulin homology. Clone pTu56 codes for an RNA of 1.8 kb which is expressed in all developmental stages. Clone pTu60 codes for a 2.5‐kb RNA expressed during embryogenesis and pupation. In testes RNA we detected a 2.2‐kb message homologous to pTu85.