Linked Life Data

70228

Source:http://linkedlifedata.com/resource/pubmed/id/70228

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1977-10-20
pubmed:abstractText
Human alpha-fetoprotein has been isolated from the serum and ascitic fluid of a patient with hepatoma by a combination of immunoadsorbent column chromatography and Sephadex G-150 gel filtration. Human alpha-fetoprotein is a sialylated glycoprotein with an estimated molecular weight of 67 500, composed of a single-chain polypeptide of approximately 580 amino acid residues and 3.6% carbohydrate. It is a negatively charged protein with an acid isoelectric point (pH 4.57). In addition to the monomeric form of alpha-fetoprotein, we have identified human alpha-fetoprotein polymers, including dimeric and trimeric forms, which dissociate to the monomer only upon exposure to disulfide-reducing reagents, implying that their formation is dependent upon intermolecular disulfide bonds. These polymers are found in human alpha-fetoprotein isolated by isoelectric focusing in both the major (pI 4.57) and minor (pI 5.2) alpha-fetoprotein fractions. The first 17 residues of the NH2-terminal amino acid sequence of the hepatoma-derived human alpha-fetoprotein have been identified. Fetal alpha-fetoprotein is indistinguishable from hepatoma alpha-fetoprotein by several criteria, including immunoelectrophoresis, acryalmide gel electrophoresis, and proclivity for dimerization.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0006-3002
pubmed:author
pubmed:issnType
Print
pubmed:day
23
pubmed:volume
493
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
418-28
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1977
pubmed:articleTitle
Studies on human alpha-fetoprotein. Isolation and characterization of monomeric and polymeric forms and amino-terminal sequence analysis.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.