Linked Life Data

6434381

Source:http://linkedlifedata.com/resource/pubmed/id/6434381

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1984-11-5
pubmed:abstractText
The activity of beta-D-galactosidase was studied in 13 strains of lactobacilli (groups Streptobacterium, Thermobacterium and Betabacterium). Using 2-nitrophenyl galactopyranoside as substrate, the enzyme activity varied with the strain. The values found in the Thermobacterium group were superior to those in the Streptobacterium group. The optimum pH for the species belonging to the Thermobacterium group was uniform, in contrast to the pH for those from the Streptobacterium which varied according to the species. The optimum temperature was quite uniform within each group and higher in the Streptobacterium. Lactose acted as a competitive inhibitor. MgCl2 protected the enzyme from thermal denaturation. The calcium ions inhibited the activity in all cases. The behaviour of the protectors of the SH groups varied according to the strain. 6-Phospho-beta-D-galactosidase activity was also determined, levels lower than beta-D-galactosidase were found, except in Lactobacillus plantarum ATCC 8014 and 14917.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0015-5632
pubmed:author
pubmed:issnType
Print
pubmed:volume
29
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
288-94
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
beta-D-galactosidase of Lactobacillus species.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't