Effects of ligation on ethanol-induced Balbiani ring puffing in salivary glands of Chironomus

Chromosoma ◽  
1984 ◽  
Vol 89 (4) ◽  
pp. 274-279 ◽  
Author(s):  
Shizuo Yagi
Keyword(s):  
Salivary Glands ◽  
Balbiani Ring

scholarly journals A novel giant secretion polypeptide in Chironomus salivary glands: implications for another Balbiani ring gene.

1985 ◽  
Vol 101 (3) ◽  
pp. 1044-1051 ◽  
Author(s):  
W Y Kao ◽  
S T Case
Keyword(s):  
Amino Acid ◽  
Nucleotide Sequence ◽  
Salivary Glands ◽  
Cyanogen Bromide ◽  
Tryptic Peptide ◽  
Amino Acid Sequences ◽  
The Other ◽  
Balbiani Ring ◽  
Sequence Organization ◽  
Peptide Maps

Chironomus salivary glands contain a family of high Mr (approximately 1,000 X 10(3)) secretion polypeptides thought to consist of three components: sp-Ia, sp-Ib, and sp-Ic. The use of a new extraction protocol revealed a novel high Mr component, sp-Id. Results of a survey of individual salivary glands indicated that sp-Id was widespread in more than a dozen strains of C. tentans and C. pallidivittatus. Sp-Id was phosphorylated at Ser residues, and a comparison of cyanogen bromide and tryptic peptide maps of 32P-labeled polypeptides suggested that sp-Ia, sp-Ib, and sp-Id are comprised of similar but nonidentical tandemly repeated amino acid sequences. We concluded that sp-Id is encoded by an mRNA whose size and nucleotide sequence organization are similar to Balbiani ring (BR) mRNAs that code for the other sp-I components. Furthermore, parallel repression of sp-Ib and sp-Id synthesis by galactose led us to hypothesize that both of their genes exist within Balbiani ring 2.

Secretory proteins and Balbiani ring gene activities in salivary glands of Chironomus thummi larvae

Chromosoma ◽  
1983 ◽  
Vol 88 (1) ◽  
pp. 16-23 ◽  
Author(s):  
E. Serfling ◽  
L. Meyer ◽  
A. Rudolph ◽  
Kerstin Steiner
Keyword(s):  
Salivary Glands ◽  
Secretory Proteins ◽  
Balbiani Ring ◽  
Chironomus Thummi

Dependence of Balbiani ring induction in Chironomus salivary glands on inorganic phosphate

1982 ◽  
Vol 91 (1) ◽  
pp. 131-137 ◽  
Author(s):  
Jan-Erik Edström ◽  
Halina Sierakowska ◽  
Karin Burvall
Keyword(s):  
Salivary Glands ◽  
Inorganic Phosphate ◽  
Balbiani Ring

Correlated changes of Balbiani ring expansion and secretory protein synthesis in larval salivary glands ofChironomus tentans

Chromosoma ◽  
1976 ◽  
Vol 58 (2) ◽  
pp. 137-153 ◽  
Author(s):  
Walter Pankow ◽  
Markus Lezzi ◽  
Ingrid Holderegger-M�hling
Keyword(s):  
Protein Synthesis ◽  
Salivary Glands ◽  
Ring Expansion ◽  
Secretory Protein ◽  
Balbiani Ring

scholarly journals Aquatic silk proteins in Chironomus: A review

2018 ◽  
Author(s):  
Leena J. Thorat ◽  
Bimalendu B. Nath
Keyword(s):  
Environmental Factors ◽  
Salivary Glands ◽  
Significant Role ◽  
Balbiani Ring ◽  
Silk Proteins ◽  
Pilot Studies ◽  
Chironomid Midges ◽  
Balbiani Rings ◽  
Literature Database

Silk proteins secreted by salivary glands in the dipteran insect, Chironomus play a significant role as proteinaceous adhesives for construction of underwater housing nests by larvae. To date, only three Chironomus species, C. tentans Fabricius, C. pallidivittatus Malloch and C. riparius Meigen have been explored for characterization of their aquatic silk protein. Genes coding for silk proteins are located on specific chromosomal ‘puffs’ called Balbiani rings as well as non-Balbiani ring regions.  Expression of these genes is closely regulated by developmental and hormonal alterations and environmental factors. Furthermore, pilot studies have postulated that silk proteins probably occur in diverse size classes grouped into large (~1000 kDa), intermediate (100-200 kDa) and small (≤100 kDa). Barring few preliminary reports that date back to the 1990s, the physical and bioproperties of silk from chironomid midges remain largely unknown, leading to paucity of updated information. This review was therefore aimed to compile existing literature database and to highlight the wide possibilities for commercialization of midge larval silk as a novel biopolymer.

Concomitant induction of a Balbiani ring and a giant secretory protein in Chironomus salivary glands

Chromosoma ◽  
1980 ◽  
Vol 81 (1) ◽  
pp. 115-124 ◽  
Author(s):  
J. -E. Edstr�m ◽  
L. Rydlander ◽  
C. Francke
Keyword(s):  
Salivary Glands ◽  
Secretory Protein ◽  
Balbiani Ring
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