Rag-1: a topoisomerase?

Abstract:

:Recombination activating genes Rag-1 and Rag-2 were isolated on the basis of their ability to confer V(D)J recombination activity when co-expressed in fibroblasts. The mode of action of the confer V(D)J recombination activity when co-expressed in fibroblasts. The mode of action of the products of these genes is not known. Based on sequence comparison data, it was suggested that Rag-1 protein could act like a topoisomerase and that tyrosine in position 998 could be the active site tyrosine. We tested this hypothesis by introducing a point mutation on the Rag-1 cDNA, transforming the tyrosine codon into a phenylalanine codon. We show that the mutation has no effect on site specific recombination implying that Tyr-998 is not essential for the recombination reaction.

journal_name

Int Immunol

journal_title

International immunology

authors

Kallenbach S,Brinkmann T,Rougeon F

doi

10.1093/intimm/5.2.231

subject

Has Abstract

pub_date

1993-02-01 00:00:00

pages

231-2

issue

2

eissn

0953-8178

issn

1460-2377

journal_volume

5

pub_type

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