Linked Life Data

8308296

Source:http://linkedlifedata.com/resource/pubmed/id/8308296

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1994-3-17
pubmed:abstractText
The portion of the antibody sequence that contributes most to the conformation of the antigen-combining site is the third complementarity-determining region (CDR3). The CDR3 in antibody heavy chains are somatically produced by the rearrangement of three different immunoglobulin (Ig) gene segments, VH, D and JH, and are therefore highly variable in sequence and length. We have devised a technique for rapid analysis of CDR3 length variability from a large number of cDNA samples. This technique allows comparative evaluation of IgH heterogeneity in individuals without recourse to DNA cloning and sequencing. We also present data on Ig sequences from different stages of development in the amphibian, Xenopus laevis. Most of the larval and post-metamorphic Ig samples contained CDR3 of 3-10 codons, two codons shorter than those of the adult CDR3, which were 5-12 codons. Antibodies may by immunized tadpoles have been shown to be much less diverse than those produced by adults to the same antigen. The shorter tadpole CDR3 perhaps generates a more limited spectrum of antigen-combining site structures and, in this way, makes for a more restricted antibody repertoire.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0022-1759
pubmed:author
pubmed:issnType
Print
pubmed:day
10
pubmed:volume
168
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
219-25
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Measuring CDR3 length variability in individuals during ontogeny.
pubmed:affiliation
Department of Biology, New York University, NY 10003.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.