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Chromosome localization and gene synteny of the major histocompatibility complex in the owl monkey, Aotus


Rodent cells were hybridized with owl monkey (Aotus) cells of karyotypes II, III, V, and VI. Aotus-rodent somatic hybrid lines preferentially segregating Aotus chromosomes were selected to determine the chromosomal location of the major histocompatibility complex and other genes with which it is syntenic in man. Based on correlation between concordant segregation of the chromosome as visualized by G-banding and expression of the Aotus antigens or enzymes in independent Aotus-rodent hybrid clones, we have assigned Aotus gene loci for the MHC, GLO, ME1, SOD2, and PGM3 to Aotus chromosome 9 of karyotype VI (2n=49/50), chromosome 10 of karyotype V (2n=46), and chromosome 7 of karyotypes II and III (2n = 54 and 53). On the basis of banding patterns we previously postulated that these chromosomes of the different karyotypes were homologous. The gene assignments reported here provide independent evidence for that hypothesis. Aotus chromosomes 9 (K-VI), 10 (K-V), and 7 (K-II, III) are homologous to human chromosome 6 in that they all code for the MHC, GLO, ME1, SOD2, and PGM3. The structural differences between these homologous chromosomes probably resulted from a pericentric inversion.

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major histocompatibility complex


human lymphocyte antigen



ME1 :

cytoplasmic malic enzyme-1

SOD2 :

superoxide dismutase-B


glyoxalase 1


owl monkey leukocyte antigens






Dulbecco's modification of Eagle's medium


polyethylene glycol


hypoxanthine, aminopterin, and thymidine


potassium chloride


Giemsa band


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Ma, N.S.F., Simeone, T., McLean, J. et al. Chromosome localization and gene synteny of the major histocompatibility complex in the owl monkey, Aotus . Immunogenetics 15, 1–16 (1982).

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  • Major Histocompatibility Complex
  • Gene Locus
  • Banding Pattern
  • Structural Difference
  • Human Chromosome