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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1986-6-9
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pubmed:abstractText |
The complete amino acid sequence of soluble NADH-cytochrome b5 reductase purified from human erythrocytes was determined. The enzyme, which contained 8 methionine residues, was cleaved by cyanogen bromide. The resulting nine peptides were separated by gel filtration and purified further by high-performance liquid chromatography. The purified peptides were sequenced by automated Edman degradation. Three large CNBr peptides, residues 1-101, 109-151, and 169-231, were further fragmented with trypsin, Staphylococcus aureus V8 protease or a lysyl endopeptidase of Achromobacter lyticus. The peptides obtained from the tryptic digest of citraconylated FAD-depleted apoprotein completed the alignments of the other peptides. The enzyme was composed of 275 amino acid residues. The 4 functionally important cysteine residues were located in the COOH-terminal portion. The molecular weight of the protein was calculated to be 31,260 without FAD. A prediction of the secondary structure was made by the method of Chou and Fasman. The protein was hydrophilic as a whole (43% polarity), but some regions were rich in hydrophobic residues. From the sequence homology of this enzyme with the pyridine nucleotide-binding sites of other flavoproteins, three candidates for the FAD and NADH-binding domains were suggested.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Cyanogen Bromide,
http://linkedlifedata.com/resource/pubmed/chemical/Cytochrome Reductases,
http://linkedlifedata.com/resource/pubmed/chemical/Cytochrome-B(5) Reductase,
http://linkedlifedata.com/resource/pubmed/chemical/Peptide Fragments,
http://linkedlifedata.com/resource/pubmed/chemical/Trypsin
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pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0021-924X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
99
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
407-22
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pubmed:dateRevised |
2007-12-19
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pubmed:meshHeading |
pubmed-meshheading:3700359-Amino Acid Sequence,
pubmed-meshheading:3700359-Binding Sites,
pubmed-meshheading:3700359-Cyanogen Bromide,
pubmed-meshheading:3700359-Cytochrome Reductases,
pubmed-meshheading:3700359-Cytochrome-B(5) Reductase,
pubmed-meshheading:3700359-Erythrocytes,
pubmed-meshheading:3700359-Humans,
pubmed-meshheading:3700359-Peptide Fragments,
pubmed-meshheading:3700359-Protein Conformation,
pubmed-meshheading:3700359-Trypsin
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pubmed:year |
1986
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pubmed:articleTitle |
Complete amino acid sequence of NADH-cytochrome b5 reductase purified from human erythrocytes.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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