Linked Life Data

7592138

Source:http://linkedlifedata.com/resource/pubmed/id/7592138

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1995-12-4
pubmed:abstractText
The major beta-1,4-endoglucanase (EG) of the thermophilic actinomycete, Thermomonospora curvata, contributed over 80% of the total EG activity recovered from cell-free culture fluid after growth on cellulose. The enzyme was purified to electrophoretic homogeneity by ammonium sulphate precipitation, ion-exchange chromatography and size exclusion HPLC. This monomeric enzyme had a specific activity of 750 IU mg(-1) when assayed with 2.5% (w/v) carboxymethyl cellulose (CMC) at 70 degrees C, pH 6.0. Highest activity was observed on CMC with a degree of polymerization of 3200. The EG was stable for 48 h at 60 degrees C, pH 6.0 and had a half-life of 30 min at 80 degrees C; temperature and pH optima were 70-73 degrees C and 6.0-6.5, respectively. The mol. wt was 100,000 and the pI was 4.0. The Km and Vmax values were 7.33 mg/ml(-1) and 833 microns min(-1), respectively. EG activity was inhibited by Fe(2+), Hg(2+), Ag(+) and Pb(2+), and enhanced by dithiothreitol and Zn(2+). The first 12 amino acid residues at the N-terminus were: Asp-Glu-Val-Asp-Glu-Ile-Arg-Asn-Gly-Asp-Phe-Ser. Glutamic and aspartic acid constituted 24% of the total amino acid composition; no amino sugar was found.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0021-8847
pubmed:author
pubmed:issnType
Print
pubmed:volume
79
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
447-53
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Purification and characterization of the major beta-1,4-endoglucanase from Thermomonospora curvata.
pubmed:affiliation
Department of Microbiology, Clemson University, SC, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.