Linked Life Data

16662257

Source:http://linkedlifedata.com/resource/pubmed/id/16662257

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2010-6-29
pubmed:abstractText
When [2,4-(14)C]porphobilinogen (PBG) or [2 (aminomethyl),5-(14)C]PBG is administered to etiolated barley (Hordeum vulgare L. var. Larker) leaves in darkness, label becomes incorporated into CO(2), organic and amino acids, sugars, lipids, and proteins during a 4-hour incubation. Less than 1% of the label, however, is incorporated into porphyrins. The rate of (14)CO(2) evolution from leaves fed [2,4-(14)C]PBG is strongly inhibited by anaerobiosis but is unaffected by aminooxyacetic acid, while the rate of (14)CO(2) evolution from [2(aminomethyl),5-(14)C]PBG is strongly inhibited by aminooxyacetic acid but is not affected by anaerobiosis.THESE RESULTS SUGGEST THAT: (a) exogenous PBG is taken up and metabolized by etiolated barley leaves; (b) PBG is not metabolized exclusively to porphyrins but can be converted to a variety of intermediary metabolites; (c) this metabolism involves reactions which are partially dependent upon O(2) and pyridoxal phosphate.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Mar
pubmed:issn
0032-0889
pubmed:author
pubmed:issnType
Print
pubmed:volume
69
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
602-8
pubmed:dateRevised
2010-9-14
pubmed:year
1982
pubmed:articleTitle
Catabolism of porphobilinogen by etiolated barley leaves.
pubmed:affiliation
Department of Biological Sciences, University of Illinois at Chicago Circle, P.O. Box 4348, Chicago, Illinois 60680.
pubmed:publicationType
Journal Article