• 제목/요약/키워드: Marine sponge

검색결과 138건 처리시간 0.024초

Preliminary Structure Determination of the theonellapeptolide Ie from the marine sponge Theonella swinhoei Using NMR Methods

  • Oh, Sun-Kwan;Kim, Eun-Hee;Cheong, Hae-Kap;Rho, Jung-Rae
    • 한국자기공명학회논문지
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    • 제10권2호
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    • pp.188-196
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    • 2006
  • A known theonellapeptolide Ie, previously reported in other research group, was isolated from the methanolic extract of the Philippine sponge Theonella swinhoei. The planar structure of this compound was determined on the basis of NMR methods including HMBC and selective HMBC experiments. This is fast and efficient for the dereplication of natural products compared with the MS studies of fragments obtained from complete and partial hydrolysis. The sequence of thirteen amino acids including six N-methyl amino acids in the compound was clearly determined from correlations of extensive HMBC experiments.

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Hexabromobenzens 농후 배양에 따른 해면(Axinella sp.) 공생 미생물의 군집구조 변화 (Change of Sponge(Axinella sp.)-Associated Bacterial Community during the Cultivation with Hexabromobenzene)

  • 서현석;양성현;배승섭;이정현;권개경
    • 한국해양바이오학회지
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    • 제6권2호
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    • pp.76-83
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    • 2014
  • 할로겐화 또는 탈할로겐화에 관여하는 미생물을 특정하고자 해양의 주된 할로겐화합물 생산자인 해면 공생미생물의 군집구조에 미치는 HBB (hexabromobenzene)의 영향을 밝히고자 했다. 혐기 marine broth 2216에서 100ppm HBB첨가 유무에 관계없이 검출된 균주들은 산호나 해면에서 유래한 클론들과 높은 유사도를 보였으며 그 중 Deltaproteobacteria에 속하는 Desulfovibrio marinisediminis와 99% 유사도를 보이는 클론이 우점하는 것으로 나타났다. Clostridia계통의 Fusibacter paucivorans와 유사도가 높은 클론과 Lentisphaerae에 속하는 균주들은 HBB에 의해 감소하는 반면 Clostridia계통의 Vallitalea guaymasensis와 유사도가 높은 균주들은 HBB가 있는 경우에만 검출되었다. 알려진 균주들과의 비교 결과로 볼 때 D. marinisediminis 및 V. guaymasensis 계통의 균주들이 할로겐화 및 탈할로겐화에 관여하는 것으로 추정된다.

Bioactive Constituents of Marine Sponges of the Genus Spongosorites

  • Bao, Baoquan;Hong, Jongki;Lee, Chong-O.;Cho, Hee Young;Jung, Jee H.
    • 한국해양바이오학회지
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    • 제1권3호
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    • pp.144-155
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    • 2006
  • This report reviews the literatures on chemical constituents of marine sponges of the genus Spongosorites and also highlights our own research. Specific biological activities of the metabolites from these sponges include: cytotoxic, antitumor, antibacterial, antifungal, antiviral, anti-inflammatory, and other pharmacological activities.

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Bioactive Cyclic Dipeptides from a Marine Sponge-Associated Bacterium, Psychrobacter sp.

  • Li, Huayue;Lee, Byung-Cheol;Kim, Tae-Sung;Bae, Kyung-Sook;Hong, Jong-Ki;Choi, Sang-Ho;Bao, Baoquan;Jung, Jee-Hyung
    • Biomolecules & Therapeutics
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    • 제16권4호
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    • pp.356-363
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    • 2008
  • A bacterial strain with good antibacterial activities against Staphylococus aureus and Escherichia coli was isolated from a marine sponge Stelleta sp., and it was identified as a Psychrobacter sp. by comparative 16S rDNA sequence analysis. In our search for bioactive secondary metabolites from this psychrophillic and halotolerent bacterium, sixteen cyclic dipeptides (1-16) were isolated and their structures were identified on the basis of NMR analysis. In the test of the compounds for the protective effect against Vibrio vulnificusinduced cytotoxicity in human intestinal epithelial cells, cyclo-(L-Pro-L-Phe) (5) exhibited significant protective effect. Compounds 2, 6, and 11, which contain D-amino acid, were first isolated from bacteria.

A New Sponge of the Genus Phorbas (Poecilosclerida: Hymedesmiidae) from Gageodo Island (So-Huksando), Korea

  • Sim, Chung-Ja;Kim, Hyung-June
    • Animal cells and systems
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    • 제8권3호
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    • pp.135-137
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    • 2004
  • A taxonomic study on marine sponges was conducted with materials collected from Gageodo Island, Korea, from August 1999 to July 2001 by SCUBA diving. Among them, Phorbas gukhulensis n. sp. is new to science. Phorbas gukhulensis n. sp. is similar to P. fitictius Pulitzer-Finali from which it differs in spicule size and growth form.

한국산 다골해면류 (해면동물문, 보통해면강)의 2미기록종 (New Record of Two Poecilosclerid Sponges(Porifera, Demospongiae) from Korea)

  • Ji Young Kim;Kyung Jin Lee;Chung Ja Sim
    • Animal Systematics, Evolution and Diversity
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    • 제17권1호
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    • pp.29-34
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    • 2001
  • 1994년부터 1999년까지 한국의 거제도와 제주도에서 채집 (SCUBA)된 다골해면류를 동정ㆍ분류한 결과 왜핀셋해면 (Forcepia japonica)과 덮게크렐라해면 (Crella incrustans)의 두 종이 한국 미기록종으로 밝혀져 보고한다.

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Structure Elucidation for New Sestertepene Alkaloids from the Sponge Sacotragus sp.

  • Rho, Jung-Rae;Shin, Jong-Heon;Lee, Hyi-Seung
    • 한국자기공명학회논문지
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    • 제7권1호
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    • pp.55-61
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    • 2003
  • Sarcotragins C(1) and D(2), two novel compounds, have been isolated from the sponge Sarcotragus sp. collected from Jaeju Island, Korea. The structures of these compounds have been determined to be linear sesterterpene alkaloids on the basis of combined 1D and 2D NMR experiments. The stereochemistry involved was established by comparison of the NMR data with those reported for a similar compound.

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A New Species of Genus Cinachyrella (Spirophorida: Tetillidae) from Korea

  • Shim, Eun-Jeong;Sim, Chung-Ja
    • Animal Systematics, Evolution and Diversity
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    • 제26권1호
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    • pp.75-78
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    • 2010
  • A new marine sponge Cinachyrella unjinensis n. sp. has been collected from Jejudo Island in 2009. This new species is similar to C. kuekenthali (Uliczka, 1929) in the shape and composition of the spicules except for style. However, it differs from the latter by size of anatriaenes, protriaenes and microxeas.

Structure determination of Suberitenone B by Two-dimensional NMR techniques

  • Park, Jung-Rae;Youngwan Seo;Cho, Ki-Woong;Jongheon Shin
    • 한국자기공명학회논문지
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    • 제1권1호
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    • pp.71-77
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    • 1997
  • Substritenone B, sesterterpenoids of an unprecedented akeletal class, has been isolated from the Antarctic sponge Suberites sp. Structure of this compound has been determined by combined spectral and chemical studies.

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제주도에서 채집한 해양 해면, Asteropus simplex의 공생세균에 관한 계통학적 분석 (Phylogenetic Analysis of Bacterial Diversity in the Marine Sponge, Asteropus simplex, Collected from Jeju Island)

  • 정인혜;박진숙
    • 미생물학회지
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    • 제48권4호
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    • pp.275-283
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    • 2012
  • 해양 해면 Asteropus simplex를 제주도에서 채집하여 배양에 의한 RFLP와 비배양에 의한 DGGE 분석 방법에 의해 세균군집 구조를 조사하였다. 16S rDNA-RFLP 분석을 위해 변형된 Zobell 배지와 MA를 이용하여 120균주를 선별하고 제한효소, HaeIII와 MspI을 사용하여 각각의 다른 RFLP 패턴으로 구분하였다. RFLP 패턴으로부터 유래한 16S rDNA 염기서열 분석결과, 알려진 세균 종과 94% 이상의 유사도를 나타내었으며 Alphaproteobacteria, Gammaproteobacteria, Actinobacteria, Bacteroidetes, Firmicutes, 5개의 문이 관찰되었다. 그 중 Gammaproteobacteria가 우점하였다. 같은 해면, A. simplex의 DGGE 분석을 위해 total genomic DNA로부터 16S rDNA를 증폭하여 DGGE fingerprinting을 수행한 결과 12개의 서로 다른 밴드가 관찰되었다. 각 밴드의 16S rDNA 염기서열은 알려진 세균의 염기서열과 90% 이상의 유사성을 나타내었으며 대부분의 염기서열은 uncultured bacteria에 속하였다. DGGE 분석으로부터 미생물의 군집은 Alphaproteobacteria, Betaproteobacteria, Gammaproteobacteria, Deltaproteobacteria, Actinobacteria, Chloroflexi, Nitrospira, 7개의 문으로 나타났다. RFLP와 DGGE 방법에 의해 Alphaproteobacteria, Gammaproteobacteria, Actinobacteria가 공통적으로 발견되었으나 전체적인 공생세균의 군집구조는 분석방법에 따른 차이를 나타내었다. 배양에 의한 방법보다 비배양 방법에서 더 다양한 세균군집구조를 나타내었다.