Comparative mapping of DNA probes derived from the V κ immunoglobulin gene regions on human and great ape chromosomes by fluorescence in situ hybridization

• Published in: Genomics (San Diego, Calif.) Calif.), 1995-03, Vol.26 (1), p.147-150
• Main Authors: Arnold, Norbert, Wienberg, Johannes, Ermert, Karin, Zachau, Hans G.
• Format: Article
• Language: English
• Subjects: Animals; Biological and medical sciences; Biological Evolution; Chromosome Mapping; Chromosomes, Human, Pair 1 - genetics; Chromosomes, Human, Pair 2 - genetics; Chromosomes, Human, Pair 22 - genetics; Classical genetics, quantitative genetics, hybrids; Fundamental and applied biological sciences. Psychology; Genetics of eukaryotes. Biological and molecular evolution; Gorilla gorilla; Hominidae - genetics; Human; Humans; Immunoglobulin kappa-Chains - genetics; In Situ Hybridization, Fluorescence; Pan troglodytes; Pongo pygmaeus
• ISSN: 0888-7543; 1089-8646
• DOI: 10.1016/0888-7543(95)80095-4

Fluorescence in situ hybridization (FISH) of cosmid clones of human V κ gene regions to human and primate chromosomes contributed to the dating of chromosome reorganizations in evolution. A clone from the κ locus at 2p11–p12 (cos 106) hybridized to the assumed homologous chromosome bands in the chimpanzees Pan troglodytes (PTR) and P. paniscus (PPA), the Gorilla gorilla (GGO), and the orangutan Pongo pygmaeus (PPY). Human and both chimpanzees differed from gorilla and orangutan by the mapping of cos 170, a clone derived from chromosome 2cen–q11.2; the transposition of this orphon to the other side of the centromere can, therefore, be dated after the human/ chimpanzee and gorilla divergence. Hybridization to homologous bands was also found with a cosmid clone containing a V κI orphon located on chromosome 1 (cos 115, main signal at 1q31–q32), although the probe is not fully unique. Also, a clone derived from the orphon V κ region on chromosome 22q11 (cos 121) hybridized to the homologous bands in the great apes. This indicates that the orphons on human chromosomes 1 and 22 had been translocated early in primate evolution.