rdf:type |
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lifeskim:mentions |
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pubmed:issue |
1
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pubmed:dateCreated |
1990-4-6
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pubmed:abstractText |
Uroporphyrinogen III methylase was purified from a recombinant hemB-strain of E. coli harbouring a plasmid containing the cysG gene. N-terminal analysis of this purified protein gave an amino acid sequence corresponding to that predicted from the genetic code. From the u.v./visible spectrum of the reaction catalysed by this SAM dependent methylase it was possible to observe the sequential appearance of the chromophores of a dipyrrocorphin and subsequently of a pyrrocorphin. Confirmation of this transformation was obtained from 13C-NMR studies when it was demonstrated, for the first time directly, that uroporphyrinogen is initially converted into dihydrosirohydrochlorin (precorrin-2) and then, by further methylation, into a novel trimethylpyrrocorphin.
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Feb
|
pubmed:issn |
0014-5793
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:day |
12
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pubmed:volume |
261
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
76-80
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:2407558-Amino Acid Sequence,
pubmed-meshheading:2407558-Chromatography, High Pressure Liquid,
pubmed-meshheading:2407558-Escherichia coli,
pubmed-meshheading:2407558-Magnetic Resonance Spectroscopy,
pubmed-meshheading:2407558-Methylation,
pubmed-meshheading:2407558-Methyltransferases,
pubmed-meshheading:2407558-Molecular Sequence Data,
pubmed-meshheading:2407558-Molecular Structure,
pubmed-meshheading:2407558-Porphyrins,
pubmed-meshheading:2407558-Spectrophotometry,
pubmed-meshheading:2407558-Uroporphyrins,
pubmed-meshheading:2407558-Vitamin B 12
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pubmed:year |
1990
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pubmed:articleTitle |
Enzymatic synthesis of dihydrosirohydrochlorin (precorrin-2) and of a novel pyrrocorphin by uroporphyrinogen III methylase.
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pubmed:affiliation |
Department of Chemistry, Texas A & M University, College Station 77843.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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