Darsley M J, Rees A R
EMBO J. 1985 Feb;4(2):393-8. doi: 10.1002/j.1460-2075.1985.tb03641.x.
The nucleotide sequences of the heavy and light chain immunoglobulin mRNAs derived from five hybridomas (Gloop 1-5) secreting IgGs specific for the loop region of hen egg lysozyme were determined. These monoclonal antibodies recognise three distinct but overlapping epitopes within the loop region. The sequences of two pairs of antibodies with indistinguishable fine specificities were similar in both chains whereas the sequences of antibodies of non-identical specificities were very different. It is proposed that the D-segments expressed in two of the antibodies (Gloop3 and Gloop4) are the products of one, or perhaps two, previously unidentified germ line D-genes. Gloop1 and Gloop2 use a D-segment previously identified in antibodies specific for the hapten 2-phenyloxazolone; however it is recombined in a different reading frame in the anti-lysozyme antibodies, producing a different amino acid sequence.
测定了来自5种杂交瘤(Gloop 1 - 5)的重链和轻链免疫球蛋白mRNA的核苷酸序列,这些杂交瘤分泌对鸡卵溶菌酶环区具有特异性的IgG。这些单克隆抗体识别环区内三个不同但重叠的表位。两对具有难以区分的精细特异性的抗体在两条链上的序列相似,而具有不同特异性的抗体序列则非常不同。有人提出,在两种抗体(Gloop3和Gloop4)中表达的D片段是一个或可能两个先前未鉴定的种系D基因的产物。Gloop1和Gloop2使用先前在对半抗原2 - 苯基恶唑酮具有特异性的抗体中鉴定出的一个D片段;然而,它在抗溶菌酶抗体中以不同的阅读框进行重组,产生不同的氨基酸序列。