Linked Life Data

17456443

Source:http://linkedlifedata.com/resource/pubmed/id/17456443

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2007-4-25
pubmed:abstractText
Silk glands, present in the larval stage of the silkworm, produce threads of silky material to form the cocoon and are mainly composed of three parts: the anterior, the middle, and the posterior silk glands, each playing different roles in silk secretion. High-resolution two-dimensional polyacrylamide gel electrophoresis and computer-assisted analysis were used to investigate quantitative and qualitative differences between the middle and posterior silk glands. Silver staining revealed over 600 spots for each sample, mostly distributed from 15 to 100 kDa with pH 4-7. Computer-assisted image analysis, matrix-assisted laser desorption ionization time-of-flight mass spectrometry, and post-source decay technology suggested that there were significant differences in spot distribution and expression between the middle and posterior silk glands. In addition, 98 spots from the posterior silk gland were excised and further investigated following trypsin digestion. The results suggested that more than 20% of the 88 proteins identified were related to heat-shock proteins and chaperones. Redox system and DNA replication proteins involved in silk protein synthesis were also detected in the posterior silk gland. Interestingly, two novel serpin proteins were identified in the middle silk gland, and to a lesser extent in the posterior gland, which were presumed to be involved in regulation of proteolytic activity and protection of silk proteins from degradation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0965-1748
pubmed:author
pubmed:issnType
Print
pubmed:volume
37
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
486-96
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Studies on middle and posterior silk glands of silkworm (Bombyx mori) using two-dimensional electrophoresis and mass spectrometry.
pubmed:affiliation
The Key Sericultural Laboratory of Agricultural Ministry, Southwest University, Chongqing 400716, China.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't