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Differential distributions of two adducin-like protein isoforms in the Drosophila ovary and early embryo

Published online by Cambridge University Press:  26 September 2008

Michèle Zaccai  and
Howard D. Lipshitz
Michèle Zaccai
Affiliation:
Division of Biology, California Institute of Technology, Pasadena, California, USA.
Howard D. Lipshitz*
Affiliation:
Division of Biology, California Institute of Technology, Pasadena, California, USA.
*
H.D Lipshitz, Program in Developmental Biology, Division of Endocrinology & Department of Geneties, Research Institute, The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8. Telephone: (+1) 416-813-8179. Fax: (+1) 416-813-7956. e-mail: [email protected]..
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Summary

Adducin is a cytoskeletal protein that can function in vitro to bundle F-actin and to control the assembly of the F-actin/spectrin cytoskeletal network. The Drosophila Adducin-like (Add) locus (also referred to as hu-li tai shao (hts)) encodes a family of proteins of which several are homologous to mammalian adducin (Ding et al., Proc. Natl. Acad. Sci. USA90, 2512–16, 1993; Yue & Spradling, Genes Dev.6, 2443–54, 1992). We report the identification of two novel adducin isoforms: a 95 × 103Mr form (ADD-95) and an 87 × 103Mr form (ADD-87). We present a detailed analysis of the distribution patterns of ADD-95 and ADD-87 during oogenesis and embryogenesis. The isoforms are co-expressed in several cell- and tissuetypes; however, only ADD-87 is present in mid- to late-stage oocytes. ADD-87 is present throughout the oocyte cortex at stages 9 and 10 of oogenesis but is detectable only at the anterior pole from stage 11 onward, correlated with localisation of Add-hts mRNA first to the cortex and then to the anterior pole of the oocyte. ADD-87 co-localises with F-actin and spectrin in the cortex of the oocyte through stage 10 of oogenesis, consistent with a possible role in cytoskeletal assembly or function predicted by mammalian studies.

Keywords

AdducinDrosophilaCytoskeleton
Type
Article
Information
Zygote , Volume 4 , Issue 2 , May 1996 , pp. 159 - 166
Copyright
Copyright © Cambridge University Press 1996

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