Xylanases from marine microorganisms: A brief overview on scope, sources, features and potential applications

Qeshmi, Fatemeh Izadpanah; Homaei, Ahmad; Fernandes, Pedro; Hemmati, Roohullah; Dijkstra, Bauke W.; Khajeh, Khosro

doi:10.1016/j.bbapap.2019.140312

Cited by 56 publications

(38 citation statements)

References 132 publications

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“…YS-80-122 Hydrolase Degrade carrageenans [ [172] , [173] , [174] , [175] ] Cellulose and hemicellulose hydrolase Cytophaga, Cellulomonas, Vibrio, Clostridium, Streptomyces Fusarium, Chaetomium, Phoma, Sporotrichum, Glaciecola sp. strain 4H-3–7+YE-5 Hydrolase Break down cellulose [ [176] , [177] , [178] ] …”

Section: Biomaterials From Marine Organismsmentioning

confidence: 99%

Biomaterials from the sea: Future building blocks for biomedical applications

Wan

Qin

Chen

et al. 2021

Bioactive Materials

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Marine resources have tremendous potential for developing high-value biomaterials. The last decade has seen an increasing number of biomaterials that originate from marine organisms. This field is rapidly evolving. Marine biomaterials experience several periods of discovery and development ranging from coralline bone graft to polysaccharide-based biomaterials. The latter are represented by chitin and chitosan, marine-derived collagen, and composites of different organisms of marine origin. The diversity of marine natural products, their properties and applications are discussed thoroughly in the present review. These materials are easily available and possess excellent biocompatibility, biodegradability and potent bioactive characteristics. Important applications of marine biomaterials include medical applications, antimicrobial agents, drug delivery agents, anticoagulants, rehabilitation of diseases such as cardiovascular diseases, bone diseases and diabetes, as well as comestible, cosmetic and industrial applications.

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Section: Biomaterials From Marine Organismsmentioning

confidence: 99%

Biomaterials from the sea: Future building blocks for biomedical applications

Wan

Qin

Chen

et al. 2021

Bioactive Materials

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“…Annotations were assigned to a little more than half of the CDSs in the 15.3 Mb repeat in which support for xylose transport, two sulfatase copies, two endonuclease copies and a MacBlike (potential macrolide export) periplasmic core domain were encoded. Xylan might be sourced from seaweeds (48) or the even ascidian as it is a minor component of the tunic cellulose (49).…”

Section: Ca S Palmerolidicus Genome Structure Function and Host-associated Featuresmentioning

confidence: 99%

Discovery of an Antarctic ascidian-associated uncultivated Verrucomicrobia with antimelanoma palmerolide biosynthetic potential

Murray

Daligault

et al. 2021

Preprint

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The Antarctic marine ecosystem harbors a wealth of biological and chemical innovation that has risen in concert over millennia since the isolation of the continent and formation of the Antarctic circumpolar current. Scientific inquiry into the novelty of marine natural products produced by Antarctic benthic invertebrates led to the discovery of a bioactive macrolide, palmerolide A, that has specific activity against melanoma and holds considerable promise as an anticancer therapeutic. While this compound was isolated from the Antarctic ascidian Synoicum adareanum, its biosynthesis has since been hypothesized to be microbially mediated, given structural similarities to microbially-produced hybrid non-ribosomal peptide-polyketide macrolides. Here, we describe a metagenome-enabled investigation aimed at identifying the biosynthetic gene cluster (BGC) and palmerolide A-producing organism. A 74kb candidate BGC encoding the multimodular enzymatic machinery (hybrid Type I-trans-AT polyketide synthase-non-ribosomal peptide synthetase and tailoring functional domains) was identified and found to harbor key features predicted as necessary for palmerolide A biosynthesis. Surveys of ascidian microbiome samples targeting the candidate BGC revealed a high correlation between palmerolide-gene targets and a single 16S rRNA gene variant (R=0.83 to 0.99). Through repeated rounds of metagenome sequencing followed by binning contigs into metagenome-assembled genomes, we were able to retrieve a near-complete genome (10 contigs) of the BGC organism, a novel verrucomicrobium within the Opitutaceae family that we propose here as Candidatus Synoicihabitans palmerolidicus. The refined genome assembly harbors five highly similar BGC copies, along with structural and functional features that shed light on the host-associated nature of this unique bacterium.

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“…Different from that, 1,3-xylan is a linear homopolysaccharide composed of β-1,3linked D-xylose units (Iriki et al, 1960). 1,3-xylan, which is considered the main xylan structure in marine algae (Qeshmi et al, 2020), has been found in the cell walls of many green algae (Caulerpa, Dichotomosiphon, Halimeda, Penicillus, and Udotea spp. ) and some red algae (Porphyra and Bangia spp.…”

Section: Introductionmentioning

confidence: 99%

Diversity of Marine 1,3-Xylan-Utilizing Bacteria and Characters of Their Extracellular 1,3-Xylanases

Sun

et al. 2021

Front. Microbiol.

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1,3-xylan is present in the cell walls of some red and green algae and is an important organic carbon in the ocean. However, information on its bacterial degradation is quite limited. Here, after enrichment with 1,3-xylan, the diversity of bacteria recovered from marine algae collected in Hainan, China, was analyzed with both the 16S rRNA gene amplicon sequencing and the culture-dependent method. Bacteria recovered were affiliated with more than 19 families mainly in phyla Proteobacteria and Bacteroidetes, suggesting a high bacterial diversity. Moreover, 12 strains with high 1,3-xylanase-secreting ability from genera Vibrio, Neiella, Alteromonas, and Gilvimarinus were isolated from the enrichment culture. The extracellular 1,3-xylanases secreted by Vibrio sp. EA2, Neiella sp. GA3, Alteromonas sp. CA13-2, and Gilvimarinus sp. HA3-2, which were taken as representatives due to their efficient utilization of 1,3-xylan for growth, were further characterized. The extracellular 1,3-xylanases secreted by these strains showed the highest activity at pH 6.0–7.0 and 30–40°C in 0–0.5M NaCl, exhibiting thermo-unstable and alkali-resistant characters. Their degradation products on 1,3-xylan were mainly 1,3-xylobiose and 1,3-xylotriose. This study reveals the diversity of marine bacteria involved in the degradation and utilization of 1,3-xylan, helpful in our understanding of the recycling of 1,3-xylan driven by bacteria in the ocean and the discovery of novel 1,3-xylanases.

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Xylanases from marine microorganisms: A brief overview on scope, sources, features and potential applications

Cited by 56 publications

References 132 publications

Biomaterials from the sea: Future building blocks for biomedical applications

Biomaterials from the sea: Future building blocks for biomedical applications

Discovery of an Antarctic ascidian-associated uncultivated Verrucomicrobia with antimelanoma palmerolide biosynthetic potential

Diversity of Marine 1,3-Xylan-Utilizing Bacteria and Characters of Their Extracellular 1,3-Xylanases

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