Abstract:
:Caldwell, D. R. (U.S. Department of Agriculture, Beltsville, Md.), D. C. White, M. P. Bryant, and R. N. Doetsch. Specificity of the heme requirement for growth of Bacteroides ruminicola. J. Bacteriol. 90:1645-1654. 1965.-Previous studies suggested that most strains of Bacteroides ruminicola subsp. ruminicola require heme for growth. Present studies with heme-requiring strain 23 showed that protoheme was replaced by various porphyrins, uroporphyrinogen, coproporphyrinogen, certain iron-free metalloporphyrins, hemes, and certain heme-proteins containing readily removable hemes. Strain 23 utilized a wider range of tetrapyrroles than hemin-requiring bacteria previously studied. Inactive compounds included porphyrin biosynthesis intermediates preceding the tetrapyrrole stage and related compounds; uroporphyrin, chlorophyll, pheophytin, phycoerythrin, bilirubin, pyrrole, FeSO(4) with or without chelating agents; and representative ferrichrome compounds. Strain 23, two other strains representing predominant biotypes of B. ruminicola subsp. ruminicola, and one closely related strain grew in media containing heme-free protoporphyrin, mesoporphyrin, hematoporphyrin, or deuteroporphyrin, apparently inserting iron into several nonvinyl porphyrins. Porphobilinogen and porphyrin synthesis, apparently via the commonly known heme synthesis pathway, occurred during growth of heme-independent B. ruminicola subsp. brevis strain GA33 in a tetrapyrrole-free medium containing delta-aminolevulinic acid, but delta-aminolevulinic acid metabolism to porphobilinogen or porphyrins could not be detected in cells of heme-requiring strain 23 grown in the same medium with hemin added. Growth of strain 23 with uroporphyrinogen, coproporphyrinogen, or protoporphyrin IX replacing hemin suggests that part of the commonly known heme-biosynthesis pathway is present in this strain, but nutritional and metabolic evidence indicates that some or all of the enzymes synthesizing the tetrapyrrole nucleus from linear molecules are lacking or inactive.
journal_name
J Bacterioljournal_title
Journal of bacteriologyauthors
Caldwell DR,White DC,Bryant MP,Doetsch RNdoi
10.1128/JB.90.6.1645-1654.1965subject
Has Abstractpub_date
1965-12-01 00:00:00pages
1645-54issue
6eissn
0021-9193issn
1098-5530journal_volume
90pub_type
杂志文章abstract::DifA is a methyl-accepting chemotaxis protein (MCP)-like sensory transducer that regulates exopolysaccharide (EPS) production in Myxococcus xanthus. Here mutational analysis and molecular biology were used to probe the signaling mechanisms of DifA in EPS regulation. We first identified the start codon of DifA experime...
journal_title:Journal of bacteriology
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doi:10.1128/JB.00944-10
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abstract::Clinical isolates of the fungal respiratory and systemic pathogen Histoplasma capsulatum have been placed in several different classes by using genomic restriction fragment length polymorphisms (RFLPs), but in general have not been distinguished further. We report here that a polymerase chain reaction (PCR)-based DNA ...
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更新日期:1992-11-01 00:00:00
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journal_title:Journal of bacteriology
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pub_type: 杂志文章
doi:10.1128/jb.175.8.2197-2204.1993
更新日期:1993-04-01 00:00:00
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journal_title:Journal of bacteriology
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更新日期:2001-11-01 00:00:00
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更新日期:2012-04-01 00:00:00
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doi:10.1128/jb.171.8.4385-4394.1989
更新日期:1989-08-01 00:00:00
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journal_title:Journal of bacteriology
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doi:10.1128/JB.104.2.814-818.1970
更新日期:1970-11-01 00:00:00
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pub_type: 杂志文章
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更新日期:1996-12-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.136.2.822-824.1978
更新日期:1978-11-01 00:00:00
abstract::Eklund, Curtis (The University of Texas, Austin) and Orville Wyss. Enzyme associated with bacteriophage infection. J. Bacteriol. 84:1209-1215. 1962.-A capsule-digesting enzyme was formed when azotobacter cells were infected with bacteriophage. The enzyme appeared in the medium when the phages lysed the cells. By disru...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.84.6.1209-1215.1962
更新日期:1962-12-01 00:00:00
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更新日期:2005-06-01 00:00:00
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doi:10.1128/jb.176.6.1796-1800.1994
更新日期:1994-03-01 00:00:00
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doi:10.1128/JB.89.4.1145-1150.1965
更新日期:1965-04-01 00:00:00
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doi:10.1128/JB.188.9.3357-3364.2006
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doi:10.1128/jb.166.1.1-8.1986
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pub_type: 杂志文章
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更新日期:1969-07-01 00:00:00
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pub_type: 杂志文章
doi:10.1128/jb.178.6.1548-1555.1996
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pub_type: 杂志文章
doi:10.1128/jb.174.3.867-872.1992
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.155.2.454-458.1983
更新日期:1983-08-01 00:00:00
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pub_type: 杂志文章
doi:10.1128/JB.145.2.1085-1090.1981
更新日期:1981-02-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
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更新日期:1988-09-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
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更新日期:2008-10-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
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更新日期:1996-07-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
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更新日期:2020-09-23 00:00:00