Antimicrobial peptides from the skin of the Asian frog, Odorrana jingdongensis: De novo sequencing and analysis of tandem mass spectrometry data

Liu, Jiongyu; Jiang, Jianping; Wu, Zhijun; Xie, Feng

doi:10.1016/j.jprot.2012.08.004

Cited by 25 publications

(11 citation statements)

References 59 publications

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“…margaratae . Although the exact functions of these peptides remain largely unknown, AMPs have received much attention lately [20,26], due to their anti-infective properties.…”

Section: Resultsmentioning

confidence: 99%

Transcriptome Profile of the Green Odorous Frog (Odorrana margaretae)

Qiao

Yang

et al. 2013

PLoS ONE

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Transcriptome profiles provide a practical and inexpensive alternative to explore genomic data in non-model organisms, particularly in amphibians where the genomes are very large and complex. The odorous frog Odorrana margaretae (Anura: Ranidae) is a dominant species in the mountain stream ecosystem of western China. Limited knowledge of its genetic background has hindered research on this species, despite its importance in the ecosystem and as biological resources. Here we report the transcriptome of O . margaretae in order to establish the foundation for genetic research. Using an Illumina sequencing platform, 62,321,166 raw reads were acquired. After a de novo assembly, 37,906 transcripts were obtained, and 18,933 transcripts were annotated to 14,628 genes. We functionally classified these transcripts by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG). A total of 11,457 unique transcripts were assigned to 52 GO terms, and 1,438 transcripts were assigned to 128 KEGG pathways. Furthermore, we identified 27 potential antimicrobial peptides (AMPs), 50,351 single nucleotide polymorphism (SNP) sites, and 2,574 microsatellite DNA loci. The transcriptome profile of this species will shed more light on its genetic background and provide useful tools for future studies of this species, as well as other species in the genus Odorrana. It will also contribute to the accumulation of amphibian genomic data.

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“…margaratae . Although the exact functions of these peptides remain largely unknown, AMPs have received much attention lately [20,26], due to their anti-infective properties.…”

Section: Resultsmentioning

confidence: 99%

Transcriptome Profile of the Green Odorous Frog (Odorrana margaretae)

Qiao

Yang

et al. 2013

PLoS ONE

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“…Although post-translational modification of AMPs seldom happened in odorous frogs [ 43 ], while oxidation, deamidation and carbamidomethyl were detected in our MS results. Another de novo sequencing of Asian frog skin by tandem MS identified eight intact AMPs, and also revealed that cleavages located at C-S bonds on oxidized Cys [ 44 ]. We believe that chemical modification has built a link between the structures and desired functions [ 45 , 46 , 47 ].…”

Section: Discussionmentioning

confidence: 99%

High-Throughput Identification of Antimicrobial Peptides from Amphibious Mudskippers

You

Bian

et al. 2017

Marine Drugs

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Widespread existence of antimicrobial peptides (AMPs) has been reported in various animals with comprehensive biological activities, which is consistent with the important roles of AMPs as the first line of host defense system. However, no big-data-based analysis on AMPs from any fish species is available. In this study, we identified 507 AMP transcripts on the basis of our previously reported genomes and transcriptomes of two representative amphibious mudskippers, Boleophthalmus pectinirostris (BP) and Periophthalmus magnuspinnatus (PM). The former is predominantly aquatic with less time out of water, while the latter is primarily terrestrial with extended periods of time on land. Within these identified AMPs, 449 sequences are novel; 15 were reported in BP previously; 48 are identically overlapped between BP and PM; 94 were validated by mass spectrometry. Moreover, most AMPs presented differential tissue transcription patterns in the two mudskippers. Interestingly, we discovered two AMPs, hemoglobin β1 and amylin, with high inhibitions on Micrococcus luteus. In conclusion, our high-throughput screening strategy based on genomic and transcriptomic data opens an efficient pathway to discover new antimicrobial peptides for ongoing development of marine drugs.

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“…As shown in Table , a number of potentially novel bioactive peptides were predicted. The assignment between the Chlamys farreri could be predicted based on the sequence information of the special analogues in other species of Crassostrea and Mytilus edulis , which should have the identical sequence with the peptide needed to be identified, and were named counterpart (Liu, Jiang, & Wu, ). These 47 peptides from 8 proteins consist of 2 to 15 amino acids and have molecular masses of 287.35–544.59 Da.…”

Section: Resultsmentioning

confidence: 99%

Identification and analysis of bioactive peptides from scallops (Chlamys farreri ) protein by simulated gastrointestinal digestion

et al. 2018

J Food Process Preserv

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In this study, the hydrolysates of scallops (Chlamys farreri) protein were prepared by in vitro simulated gastrointestinal digestion. Antioxidant peptides, VPSIDDQEELM, DAQEKLE, EELDNALN, VPSIDDQEELM, DAQEKLE, EELDNALN, VPSIDDQEELM and VPSIDDQEELM, were identified by ultra performance liquid chromatography system coupled to a Synapt Mass Quadrupole Time‐of‐Flight Mass Spectrometer (UPLC‐Q‐TOF‐MS). The antioxidant activities of the CFP hydrolysates, i.e., reducing powers, linoleic acid peroxidation inhibition activity and 2, 2‐dipheny l‐1‐picrylhydrazyl (DPPH) free radical scavenging activities, were tested. The antioxidant activities (54.44% ± 0.02%), reducing power (0.250 ± 0.02) and DPPH free radical scavenging activities of the hydrolysates shows higher than the same concentration of protein solution. This research provided a theoretical and practical data for the application of the bioactive peptides form CFP. Practical applications In this research, what we focused on is the qualitative of peptides from the digestive solutions. It makes more sense to discuss about the information of the special analogues, sequence and activity of peptides from hydrolysis fragment after simulated gastrointestinal digestion of CFP. These peptides which have hydrophobic residues at the C‐termini contribute to the antioxidant activity of the peptides. Comparing the antioxidant activities of the same concentration of CFP solution and in vitro gastric and gastro duodenal digestion hydrolysates, the hydrolysates of the digestion had higher reducing powers, linoleic acid peroxidation inhibition activity, and DPPH free radical scavenging activities. It could be speculated that both the peptides at approximately low‐molecular‐mass peptides (10–15 kDa) were contributing to the antioxidant activities of the hydrolysates. After the target peptides were determined, the quantitative of peptides may be more meaningful. Quantitative calculation of the digestion will be clarified in future work.

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Antimicrobial peptides from the skin of the Asian frog, Odorrana jingdongensis: De novo sequencing and analysis of tandem mass spectrometry data

Cited by 25 publications

References 59 publications

Transcriptome Profile of the Green Odorous Frog (Odorrana margaretae)

Transcriptome Profile of the Green Odorous Frog (Odorrana margaretae)

High-Throughput Identification of Antimicrobial Peptides from Amphibious Mudskippers

Identification and analysis of bioactive peptides from scallops (Chlamys farreri ) protein by simulated gastrointestinal digestion

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