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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1999-9-15
pubmed:databankReference
pubmed:abstractText
Two novel hyperthermophilic, rod-shaped crenarchaeotes were isolated from an acidic hot spring in the Philippines. Cells were mostly straight or slightly curved rods 0.4-0.7 micron in width. Bent cells, branched cells, and cells bearing globular bodies were commonly observed. The isolates were heterotrophs and grew anaerobically and microaerobically. The addition of archaeal cell extract or a vitamin mixture to the medium significantly stimulated growth. The isolates grew over a temperature range of 60-92 degrees C, and optimally around 85 degrees C and grew over a pH range of 2.3-6.4, and optimally at pH 3.7-4.2. The isolates utilized glycogen, gelatin, beef extract, peptone, tryptone and yeast extract as carbon sources. They required sulfur, thiosulfate or sulfate as electron acceptors. The lipids mainly consisted of various cyclized glycerol-bisdiphytanyl-glycerol tetraethers. The G+C content of the genomic DNAs was 43 mol%. The 16S rDNA contained two small introns. The comparison of the 16S rDNA exon sequences revealed that they represented an independent lineage in the family Thermoproteaceae. The two strains were included in a single species because of high levels of DNA-DNA relatedness. From these results, Caldivirga maquilingensis gen. nov., sp. nov. is proposed in the family Thermoproteaceae to accommodate these isolates. The type strain of C. maquilingensis is strain IC-167T (= JCM 10307T = MCC-UPLB 1200T = ANMR 0178T).
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0020-7713
pubmed:author
pubmed:issnType
Print
pubmed:volume
49 Pt 3
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1157-63
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Caldivirga maquilingensis gen. nov., sp. nov., a new genus of rod-shaped crenarchaeote isolated from a hot spring in the Philippines.
pubmed:affiliation
Japan Collection of Microorganisms, Institute of Physical, and Chemical Research, RIKEN, Saitama, Japan. ito@jcm.riken.go.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't