gdt1, a new signal transduction component for negative regulation of the growth-differentiation transition in Dictyostelium discoideum.
gdt1, a new signal transduction component for negative regulation of the growth-differentiation transition in Dictyostelium discoideum.
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gdt1,一种新的信号转导元件,用于盘基网柄菌生长-分化转变的负调控。
DOI:
--
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发表时间:
2000
影响因子:
3.3
通讯作者:
Wolfgang Nellen
中科院分区:
文献类型:
--
作者:
Changjiang Zeng;C. Anjard;Karsten Riemann;A. Konzok;Wolfgang Nellen
Discoidin I expression was used as a marker to screen for mutants affected in the growth-differentiation transition (GDT) of Dictyostelium. By REMI mutagenesis we have isolated mutant 2-9, an overexpressor of discoidin I. It displays normal morphogenesis but shows premature entry into the developmental cycle. The disrupted gene was denominated gdt1. The mutant phenotype was reconstructed by disruptions in different parts of the gene, suggesting that all had a complete loss of function. gdt1 was expressed in growing cells; the levels of protein and mRNA appear to increase with cell density and rapidly decrease with the onset of development. gdt1 encodes a 175-kDa protein with four putative transmembrane domains. In the C terminus, the derived amino acid sequence displays some similarity to the catalytic domain of protein kinases. Mixing experiments demonstrate that the gdt1(-) phenotype is cell autonomous. Prestarvation factor is secreted at wild-type levels. The response to folate, a negative regulator of discoidin expression, was not impaired in gdt1 mutants. Cells that lack the G protein alpha2 display a loss of discoidin expression and do not aggregate. gdt1(-)/Galpha2(-) double mutants show no aggregation but strong discoidin expression. This suggests that gdt1 is a negative regulator of the GDT downstream of or in a parallel pathway to Galpha2.
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DOI:
10.1002/dvg.1020120115
发表时间:
1991
期刊:
Developmental genetics
影响因子:
--
作者:
A. Rathi;S. Kayman;M. Clarke
通讯作者:
A. Rathi;S. Kayman;M. Clarke
影响因子:
--
作者:
Nellen,W;Datta,S;Reymond,C;Sivertsen,A;Mann,S;Crowley,T;Firtel,RA
通讯作者:
Firtel,RA
DOI:
10.1016/0167-4889(94)90033-7
发表时间:
1994
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Lohia,A;Samuelson,J
通讯作者:
Samuelson,J
DOI:
10.1002/dvg.1020120116
发表时间:
1991
期刊:
Developmental genetics
影响因子:
--
作者:
C. Singleton;R. Delude;R. Ken;S. Manning;C. McPherson
通讯作者:
C. Singleton;R. Delude;R. Ken;S. Manning;C. McPherson
影响因子:
10.5
作者:
Chen, MY;Long, Y;Devreotes, PN
通讯作者:
Devreotes, PN