The structure of the karrikin-insensitive protein (KAI2) in Arabidopsis thaliana.
The structure of the karrikin-insensitive protein (KAI2) in Arabidopsis thaliana.
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DOI:
10.1371/journal.pone.0054758
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Bond CS
中科院分区:
文献类型:
--
作者:
Bythell-Douglas R;Waters MT;Scaffidi A;Flematti GR;Smith SM;Bond CS
KARRIKIN INSENSITIVE 2 (KAI2) is an α/β hydrolase involved in seed germination and seedling development. It is essential for plant responses to karrikins, a class of butenolide compounds derived from burnt plant material that are structurally similar to strigolactone plant hormones. The mechanistic basis for the function of KAI2 in plant development remains unclear. We have determined the crystal structure of Arabidopsis thaliana KAI2 in space groups P21 21 21 (a = 63.57 Å, b = 66.26 Å, c = 78.25 Å) and P21 (a = 50.20 Å, b = 56.04 Å, c = 52.43 Å, β = 116.12°) to 1.55 and 2.11 Å respectively. The catalytic residues are positioned within a large hydrophobic pocket similar to that of DAD2, a protein required for strigolactone response in Petunia hybrida. KAI2 possesses a second solvent-accessible pocket, adjacent to the active site cavity, which offers the possibility of allosteric regulation. The structure of KAI2 is consistent with its designation as a serine hydrolase, as well as previous data implicating the protein in karrikin and strigolactone signalling.
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DOI:
10.1107/s0907444905036693
发表时间:
2006-01-01
影响因子:
2.2
作者:
Evans, P
通讯作者:
Evans, P
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
9.2
作者:
Hamiaux, Cyril;Drummond, Revel S. M.;Snowden, Kimberley C.
通讯作者:
Snowden, Kimberley C.
影响因子:
9.8
作者:
Besserer A;Puech-Pagès V;Kiefer P;Gomez-Roldan V;Jauneau A;Roy S;Portais JC;Roux C;Bécard G;Séjalon-Delmas N
通讯作者:
Séjalon-Delmas N
DOI:
10.1107/s0907444995016477
发表时间:
1996-07-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子:
--
作者:
Kleywegt, GJ
通讯作者:
Kleywegt, GJ