Linked Life Data

19446649

Source:http://linkedlifedata.com/resource/pubmed/id/19446649

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2009-7-14
pubmed:abstractText
A beta-1,3-glucanase (EC 3.2.1.6) with a molecular mass of 33 kDa was isolated from the digestive fluid of the Pacific abalone Haliotis discus hannai by ammonium sulfate fractionation followed by conventional column chromatography. This enzyme, named HdLam33 in the present study, degraded laminarin and laminarioligosaccharides to laminaribiose and glucose with the optimal temperature and pH at 50 degrees C and 6.0, respectively. HdLam33 possessed transglycosylation activity, a characteristic property of glucan hydrolases that split glycoside linkage with a retaining manner. By the transglycosylation reaction of HdLam33, the laminaribiose unit in the non-reducing terminus of laminaritriose (donor substrate) was transferred to a free laminaribiose (acceptor substrate) resulting to laminaritetraose and glucose. The resulting laminaritetraose was subsequently hydrolyzed by HdLam33 into 2 mol of glucose and 1 mol of laminaribiose. The primary structure of HdLam33 was analyzed by the cDNA method. The deduced amino-acid sequence of 329 residues corresponding to the catalytic domain of HdLam33 showed 56-61% amino-acid identity with those of other molluscan beta-1,3-glucanases which have been identified as glycoside hydrolase family 16 enzymes.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1879-1107
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
154
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
113-20
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Enzymatic properties and the primary structure of a beta-1,3-glucanase from the digestive fluid of the Pacific abalone Haliotis discus hannai.
pubmed:affiliation
Laboratory of Marine Biotechnology and Microbiology, Graduate School of Fisheries Sciences, Hokkaido University, Hakodate, Hokkaido 041-8611, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't