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Monoclonal BALB/c anti-progesterone antibodies use family IX variable region heavy chain genes
Variable region nucleotide sequences and respective translated amino acid sequences for three heavy chains (DB3, 11/32 and 10/8) and two light chains (DB3 and 11/32) of monoclonal mouse IgG1 anti-progesterone antibodies have been determined by primer extension mRNA sequencing. The three VH regions exhibit the same rarely observed VH IX gene family and have greater than 88% homology between them. Two associated light chain sequences are 95% homologous and belong to the V kappa I group. The N-terminal twenty two amino acids of the kappa light chain of the third antibody 10/8 have been determined by automated protein sequencing and are identical to those of 11/32. Thus, these three monoclonal anti-progesterones derived from separate fusions all use VHIX-V kappa 1 gene combinations.
Variable region nucleotide sequences and respective translated amino acid sequences for three heavy chains (DB3, 11/32 and 10/8) and two light chains (DB3 and 11/32) of monoclonal mouse IgG1 anti-progesterone antibodies have been determined by primer extension mRNA sequencing. The three VH regions exhibit the same rarely observed VH IX gene family and have greater than 88% homology between them. Two associated light chain sequences are 95% homologous and belong to the V kappa I group. The N-terminal twenty two amino acids of the kappa light chain of the third antibody 10/8 have been determined by automated protein sequencing and are identical to those of 11/32. Thus, these three monoclonal anti-progesterones derived from separate fusions all use VHIX-V kappa 1 gene combinations.