Linked Life Data

10303

Source:http://linkedlifedata.com/resource/pubmed/id/10303

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
21
pubmed:dateCreated
1977-1-3
pubmed:abstractText
Monophosphoglycerate mutase has been purified to homogeneity from outdated human erythrocytes as indicated by exclusion chromatography, polyacrylamide gel electrophoresis, and equilibrium centrifugation. Occasionally, the recommended purification procedure yields a small amount (3% or less) of a single extraneous protein which can be deleted from the enzyme preparation by employing an additional purification step. The native enzyme has a molecular weight of 54,000 to 56,000 as determined by equilibrium centrifugation and exclusion chromatography. Disc gel electrophoresis in the presence of sodium dodecyl sulfate yields a single protein band with a molecular weight of 28,600, indicating that the native macromolecule is a dimer composed of subunits of similar mass. Homogeneous monophosphoglycerate mutase is free of diphosphoglycerate mutase, enolase, and nonspecific phosphatase activities; however, the enzyme manifests intrinsic 2,3-diphospho-D-glycerate phosphatase activity as shown by thermal denaturation studies. The diphosphatase activity is stimulated by PPi and glycolate-2-P, but is inhibited by Cl-, HSO3-, and Pi. The pH optimum for both the diphosphatase and the mutase is 6.8. The Km for 2,3-diphospho-D-glycerate in the phosphatase reaction is 82 muM at 37 degrees and pH 7.2. The amino acid composition of homogeneous monophosphoglycerate mutase is given.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
10
pubmed:volume
251
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6699-704
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1976
pubmed:articleTitle
Isolation and partial characterization of monophosphoglycerate mutase from human erythrocytes.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.