The secreted Dictyostelium protein CfaD is a chalone.
The secreted Dictyostelium protein CfaD is a chalone.
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DOI:
10.1242/jcs.026682
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发表时间:
2008-08-01
影响因子:
4
通讯作者:
Gomer RH
中科院分区:
文献类型:
--
作者:
Bakthavatsalam D;Brock DA;Nikravan NN;Houston KD;Hatton RD;Gomer RH
Dictyostelium discoideum cells secrete CfaD, a protein that is similar to cathepsin proteases. Cells that lack cfaD proliferate faster and reach a higher stationary-phase density than wild-type cells, whereas cells that overexpress CfaD proliferate slowly and reach the stationary phase when at a low density. On a per-nucleus basis, CfaD affects proliferation but not growth. The drawback of not having CfaD is a reduced spore viability. Recombinant CfaD has no detectable protease activity but, when added to cells, inhibits the proliferation of wild-type and cfaD− cells. The secreted protein AprA also inhibits proliferation. AprA is necessary for the effect of CfaD on proliferation. Molecular-sieve chromatography indicates that in conditioned growth medium, the 60 kDa CfaD is part of a ~150 kDa complex, and both chromatography and pull-down assays suggest that CfaD interacts with AprA. These results suggest that two interacting proteins may function together as a chalone signal in a negative feedback loop that slows Dictyostelium cell proliferation.
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影响因子:
14.9
作者:
Faix, J;Kreppel, L;Kimmel, AR
通讯作者:
Kimmel, AR
影响因子:
4.8
作者:
Brock, DA;Ehrenman, K;Gomer, RH
通讯作者:
Gomer, RH
影响因子:
--
作者:
Brock, DA;Hatton, RD;Gomer, RH
通讯作者:
Gomer, RH
影响因子:
4.3
作者:
Gocheva, Vasilena;Joyce, Johanna A.
通讯作者:
Joyce, Johanna A.
影响因子:
5.6
作者:
BERTI, PJ;STORER, AC
通讯作者:
STORER, AC