Sulphation-desulphation of a membrane component proposed to be involved in control of differentiation in Volvox carteri
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چکیده
منابع مشابه
Sulphation-desulphation of a membrane component proposed to be involved in control of differentiation in Volvox carteri.
In the developing asexual embryo of Y&XX carteri the differentiation into somatic and reproductive cells is seen at the division from 32-64 cells. At this stage, 16 cells of the 32celled embryo undergo unequal cleavage, forming 16 large reproductive cells [ 1,2]. In sexual embryos developing under the influence of an inducer the differentiating cleavage is delayed in the male strain up to the f...
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15 صفحه اولControl of differentiation in volvox carteri: a model explaining pattern formation during embryogenesis.
The green flagellate J’olvox is a simple muhicellular organism having only two kinds of cells, somatic and reproductive. The cells are arranged on the periphery of a spheroid. Asexual individu~s of I’olvox carten’ are composed of 2000-4000 somatic cells and about 16 large reproductive cells (gonidia), located in the posterior region of the spheroid. Mature asexual spheroids show a very regular ...
متن کاملSulphation of a cell surface glycoprotein from Volvox carteri. Evidence for a membrane-bound sulfokinase working with PAPS.
Sulphated glycoproteins have been implicated in the control of cell growth and differentiation: fibronectins [ 1,2]; glycoproteins in developing sea urchin embryos [3]; and a surface glycoprotein from V&ox curteri [4]. This V&ox glycoprotein, of 185 000 app. M, [4] appears to be involved in the control of the differentiation of the organism during embryogenesis. Although PAPS or APS must be inv...
متن کاملTranslational control of regA, a key gene controlling cell differentiation in Volvox carteri.
The complete division of labour between the reproductive and somatic cells of the green alga Volvox carteri is controlled by three types of genes. One of these is the regA gene, which controls terminal differentiation of the somatic cells. Here, we examined translational control elements located in the 5' UTR of regA, particularly the eight upstream start codons (AUGs) that have to be bypassed ...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 1980
ISSN: 0014-5793
DOI: 10.1016/0014-5793(80)81140-9