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. 1991 Oct 15;88(20):9253-6.
doi: 10.1073/pnas.88.20.9253.

Wegener autoantigen and myeloblastin are encoded by a single mRNA

C Labbaye  1 , P Musette, Y E Cayre
Affiliations

Wegener autoantigen and myeloblastin are encoded by a single mRNA

C Labbaye et al. Proc Natl Acad Sci U S A. .

Abstract

Myeloblastin is a serine protease that has been identified in the human leukemia cell line HL-60. Down-regulation of this protease can inhibit proliferation and induce differentiation of promyelocyte-like human leukemic cells. Proteinase 3, a serine protease of human neutrophils, has been identified as the Wegener autoantigen. A high level of homology between myeloblastin and proteinase 3 has suggested that they may be a single serine protease. We have recently completed the 5'-terminal nucleotide sequence of proteinase 3 and shown that its mRNA was also expressed in HL-60 cells and in cells from patients with acute myeloid leukemia. Here we demonstrate that myeloblastin and proteinase 3 are encoded by a single mRNA.

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