English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  Differential regulation of target genes by different alleles of the segmentation gene hunchback in Drosophila

Hülskamp, M., Lukowitz, W., Beermann, A., Glaser, G., & Tautz, D. (1994). Differential regulation of target genes by different alleles of the segmentation gene hunchback in Drosophila. Genetics, 138(1), 125-134. doi:10.1093/genetics/138.1.125.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Hülskamp, Martin, Author
Lukowitz, Wolfgang1, Author
Beermann, Anke1, Author
Glaser, Gerald1, Author
Tautz, Diethard2, Author                 
Affiliations:
1external, ou_persistent22              
2External, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: hunchback ( hb) is a key regulatory gene in the early segmentation gene hierarchy of Drosophila. It codes for a transcription factor of the Cys(2)-His(2) zinc finger type and shows two separate zinc finger domains in its coding region, hb forms a morphogenetic gradient in the middle of the embryo that is required for setting the spatial boundaries of several target genes. We have analyzed the molecular lesions found in the different hb alleles and have studied the differential effects of these alleles on a number of such target genes. We find that in mutants in which the HB protein lacks a functional second finger domain, the regulation of the target genes Kruppel (Kr) and knirps (kni) is differentially affected. While this domain is required for the correct regulation of Kr, it is not necessary for the repression of Kni. Furthermore, mutations affecting this domain lead to a decreased protein stability. The integration of the expression pattern of target genes was found to be distorted in a second class of mutants between the two finger domains which lead to gain of function or neomorphic phenotypes. The effects of these mutations were studied in detail and it was found that they fall into two classes, the first one interfering with the function of the maternal hb product, the second leading to a delayed segmentation. The function of the latter class appears to be linked to the secondary expression of hb in the parasegment 4 (PS4) stripe at blastoderm stage.

Details

show
hide
Language(s): eng - English
 Dates: 1994-091994-01-181994-05-191994-09
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1093/genetics/138.1.125
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Genetics
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Genetics Society of America
Pages: - Volume / Issue: 138 (1) Sequence Number: - Start / End Page: 125 - 134 Identifier: ISSN: 0016-6731
CoNE: https://pure.mpg.de/cone/journals/resource/954925400554