Biomineralization in Diatoms: The Role of Silacidins

Richthammer, Patrick; Börmel, Mandy; Brunner, Eike; Pée, Karl‐Heinz van

doi:10.1002/cbic.201000775

Cited by 61 publications

(65 citation statements)

References 34 publications

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“…From the Uniprot base (March 2014), we obtained the amino acid sequences of SIT (ID O81199 and C7G3B4), aquaporin (ID Q6Z2T3), silaffins (ID Q9SE35, Q5Y2C0 and Q5Y2C2), and silicateins (ID B5B2Z1, B1GSK9, and B5LT52). The sequences of silacidins were obtained from the work [34], and those from silicase were taken from [35]. …”

Section: Methodsmentioning

confidence: 99%

Phytoliths in Taxonomy of Phylogenetic Domains of Plants

Golokhvast

Seryodkin

Чайка

et al. 2014

BioMed Research International

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We discuss, from the aspect of phylogeny, the interrelationships of the phytolith types in plants from the main taxonomical groups (algae, lichens, horsetails, gymnosperms, and floral plants) with homologues of known proteins of biomineralization. Phytolith morphotypes in various phylogenetic plant domains have different shapes. We found that, in ancient types of plants (algae, horsetails, and gymnosperms), there are fewer different phytolith morphotypes compared to more modern plants (floral plants). The phytolith morphotypes in primitive plants are generally larger than the morphotypes in more highly organized plants. We found that the irregular ruminate and irregular smooth morphotypes are the two most frequently encountered phytolith morphotypes in the tested plants (from algae to floral plants). These two morphotypes probably have a universal role. Silacidins, silicon transporters, silicateins, silaffins, and silicase homologues are often found in the major taxonomic groups of plants. Red algae had the smallest number of homologues of the biomineralization proteins (70–80), Monocotyledonous: 142, Coniferous: 166, Mosses: 227, and Dicotyledones: 336.

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Section: Methodsmentioning

confidence: 99%

Phytoliths in Taxonomy of Phylogenetic Domains of Plants

Golokhvast

Seryodkin

Чайка

et al. 2014

BioMed Research International

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“…From the Uniprot database (March-April 2016), we obtained the amino acid sequences of silicon transporters (ID O81199 and C7G3B4), aquaporin (ID Q6Z2T3), silaf fin (ID Q9SE35), and silicateins (ID B5B2Z1, B1GSK9, and B5LT52). The silacidins sequences were obtained from Richthammer et al (2011) while those from silicase were from Schröder et al (2007).…”

Section: Silicon Transporters Screeningmentioning

confidence: 99%

Mycolith (fungal phytolith) morphotypes and biosilification of proteins in wood-destroying and pileate fungi

Golokhvast¹,

Seryodkin²,

Bulakh³

et al. 2018

Bot Pac

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The process of biomineralization in fungi is discussed for the first time. The results of a comprehensive study of fungal phytoliths (mycoliths) using optical micro scopy and RAMAN spectroscopy are presented. The RAMAN spectrum con tains bands of crystalline silicon dioxide and amorphous silica. In all types of fungi and trees examined, two morphotypes of phytolite particles were identified with an aid of microsco pe, oblong and spherical. The rest of the particles were considered formless. To explain the mechanisms of biosilification, a bioinomatic analysis of biosilicon proteins homologues (silicateins, silacidins, silaffins, silicon transporters, silicase) in annotated fungal proteomes was carried out by in silico technique. The paper shows proteins of fungi, which can potentially participate in the formation of mycoliths. K e y w o r d s : fungi, mycolith, phytolith, biomineralization proteins Р Е З Ю М ЕГолохваст К.С., Середкин И.В., Булах Е.М., Чайка В.В., Захаренко А.М., Холодов А.С., Памирский И.Е., Чунг Ж. Морфотипы миколи-тов (грибных фитолитов) и биосилификация белков в грибах, раз-рушающих древесину. Впервые комплексно обсуждается процесс био минерализации у грибов. При водятся результаты комплексного изучения фитолитов грибов (мико ли тов) методами оптической микроскопии и RAMAN-спектроскопии. RAMAN-спектр содержит полосы кристалличе ского диоксида кремния и аморф ного кремнезема. Во всех видах исследо ванных грибов и деревьев мик ро скопически установлены два морфотипа частиц фитолитов: продолговатые и шарообразные. Остальные частицы были бесформенные. Для объяснения механизмов был произведен био инофрмационный анализ гомологов белков биосилификации (силикате инов, силацидинов, силаффинов, транс портеров кремния, силиказы) в ан нотированных протеомах грибов ме тодом in silico. В работе показаны белки грибов, которые могут потенциально участвовать в процессе формирова ния миколитов. Mycolith (fungal phytolith) morphotypes and biosilification of proteins in wood-destroying and pileate fungiPhytoliths are not organic fossil micrometric minerals deposited in situ, and therefore track mainly local changes in vegetation composition. Their structures are resulting from the accumulation of oxalate, carbonate, or silica in cell wall or entire cell. In recent years, phytolith analysis has became valuable tool in taxonomic, palaeoenvironmental and archa eo logical work to determine the presence of species in a sample (Piperno 2006, Katz et al. 2015, Zurro et al. 2016. Phytoliths have been found in many plant groups (Madella et al. 2005, Piperno 2006, as biogenic silica is deposited in some of tissues. The differing roles of silicon microforma tions in plants are not completely understood.The microbial metabolism of silicon has been limited, except on diatoms and plants. Wainwright et al. (1997) sug ges ted that fungi might utilize silicon compounds as an ener gy source. Kaiser & Benz (1998) reported on the bene fi cial effects of silicon on growth of some fungi such as Fusarium spp. and Verticillium spp. The...

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“…[44] Furthers tudies by the groupso fv an PØea nd Sumper indicated that as econd set of proteins in diatoms, called the silacidins, served as the polyanion required in vivo as as ilica formationt emplate by the silaffins. [48,49] Althought he silaffinp roteins can catalyze the condensation of silicic acid on their own, the efficiency of the reactioni ncreases in the presenceo fs ilacidin proteins ( Figure 7).…”

Section: Diatomsmentioning

confidence: 99%

Biocatalysis in Silicon Chemistry

Frampton

Zelisko

2017

Chemistry An Asian Journal

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The application of biocatalytic or chemoenzymatic techniquesi ns ilicon chemistry serves two roles:i tp rovides ag reater understanding of the processing of silicon species by natural systems, such as plants, diatoms, and sponges, as well openingu pa venues to green methodologies in the field. In the latter case, biocatalytic approaches have been applied to the synthesis of small-molecule systems and polymeric materials. Often these biocatalytic approaches allow access to molecular structures under mild conditions and, in some cases, molecular structures that are not accessible throught raditional chemical methodologies. Ar eview of recent advances in the applications of biocatalysis in silicon chemistry is presented.

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Biomineralization in Diatoms: The Role of Silacidins

Cited by 61 publications

References 34 publications

Phytoliths in Taxonomy of Phylogenetic Domains of Plants

Phytoliths in Taxonomy of Phylogenetic Domains of Plants

Mycolith (fungal phytolith) morphotypes and biosilification of proteins in wood-destroying and pileate fungi

Biocatalysis in Silicon Chemistry

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