First Author | Kudo A | Year | 1987 |
Journal | EMBO J | Volume | 6 |
Issue | 1 | Pages | 103-7 |
PubMed ID | 3107979 | Mgi Jnum | J:8712 |
Mgi Id | MGI:57177 | Doi | 10.1002/j.1460-2075.1987.tb04725.x |
Citation | Kudo A, et al. (1987) Organization of the murine Ig-related lambda 5 gene transcribed selectively in pre-B lymphocytes [published erratum appears in EMBO J 1987 Dec 20;6(13):4242]. EMBO J 6(1):103-7 |
abstractText | lambda 5 is an immunoglobulin lambda light chain-related gene which is selectively transcribed in murine pre-B lymphocytes to yield a 1.2 kb poly(A)+ mRNA. Comparison of the nucleotide sequence of a 1 kb cDNA clone with the sequence of a genomic clone isolated from 70Z/3 murine pre-B lymphoma cells shows lambda 5 is composed of three exons spanning a 3.75 kb DNA segment. Conserved splice signal sequences at all exon/intron boundaries and the presence of a long open reading frame indicate that a functional mRNA molecule can be made. Exon I contains a cap-site and a potential ATG start codon as well as sequences encoding a signal peptide. This gene could encode a lambda 5 protein of 209 amino acids which has, however, not yet been identified. The 3' portion of exon II and all of exon III shows strong sequence homologies to J lambda L and C lambda L exons. Homology to the lambda L chain genes is lost in the 5' portion of exon II and throughout exon I. In exon I short homologies to leader sequences and to VH framework 1 sequences are seen. |