Mycosporine-like amino acids: relevant secondary metabolites. Chemical and ecological aspects.

Mycosporine-like amino acids: relevant secondary metabolites. Chemical and ecological aspects.
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DOI:
10.3390/md9030387
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发表时间:
2011-03-21
期刊:
影响因子:
5.4
通讯作者:
Carignan MO
Carignan MO
中科院分区:
医学2区
文献类型:
--
作者:
Carreto JI;Carignan MO

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分类多样的海洋、淡水和陆地生物已经进化出合成、积累和代谢各种称为类菌孢素氨基酸 (MAAs) 的紫外线吸收物质的能力,作为减少环境紫外线辐射 (UVR) 直接和间接破坏性影响的总体策略的一部分。虽然合成 MAA 的酶机制可能是通过内共生菌假说从蓝藻祖先遗传而来,但后生动物缺乏这种生化途径,但可以通过营养转移、共生或细菌关联来获取和代谢这些化合物。在这篇综述中,我们描述了 MAA 的结构和理化性质,包括最近发现的化合物以及用于分离和鉴定其的现代方法,更新了之前的综述。在此基础上,我们综述了这一类独特代谢物在海洋生物中的代谢和分布。
Taxonomically diverse marine, freshwater and terrestrial organisms have evolved the capacity to synthesize, accumulate and metabolize a variety of UV-absorbing substances called mycosporine-like amino acids (MAAs) as part of an overall strategy to diminish the direct and indirect damaging effects of environmental ultraviolet radiation (UVR). Whereas the enzymatic machinery to synthesize MAAs was probably inherited from cyanobacteria ancestors via the endosymbionts hypothesis, metazoans lack this biochemical pathway, but can acquire and metabolize these compounds by trophic transference, symbiotic or bacterial association. In this review we describe the structure and physicochemical properties of MAAs, including the recently discovered compounds and the modern methods used for their isolation and identification, updating previous reviews. On this basis, we review the metabolism and distribution of this unique class of metabolites among marine organism.
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