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ISSN: 0860-7796
BioTechnologia
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1/2013
vol. 94
 
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abstract:
Short communication

Crystal structure of a PR-10 nodulin in complex with trans-zeatin

Milosz Ruszkowski
,
Michal Sikorski
,
Mariusz Jaskolski

BioTechnologia vol. 94(1) C pp. 42-46 C 2013
Online publish date: 2014/10/23
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Nodules are unique root organs of legume plants. Nodulation (nodule formation) is an extraordinary symbiotic

process which eventually allows a plant to assimilate atmospheric nitrogen. The nitrogen-fixing bacteria that colonize

the nodules convert molecular nitrogen N2 into compounds suitable for plant metabolism. A class of plant

hormones called cytokinins are known to affect the nodulation process. A small protein, Nodulin 13 from Medicago

truncatula
(MtN13), is expressed in the outer cortex of the nodule at early stages of nodulation. MtN13 belongs

to class 10 of plant pathogenesis-related proteins (PR-10). PR-10 members have been shown to bind cytokinins.

This paper focuses on the involvement of cytokinins in nodulation and presents a brief overview of the

crystal structure of MtN13 in complex with trans-zeatin, a naturally occurring cytokinin.


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