Protein domains involved in nuclear transport of Fos.

Abstract:

:The protein encoded by the proto-oncogene c-fos is constitutively nuclear in most cell types analyzed. It has a predicted molecular weight of about 55 kDa. Proteins with a molecular weight above 40 kDa cannot enter the nucleus passively. Our interest was to study which regions in the protein are involved in the nuclear transport. We prepared a series of deletions and point mutations of the protein and cloned the mutated genes into a eukaryotic expression vector. Cos-1 cells were used to express the mutants transiently. Using indirect immunofluorescence we studied the subcellular localization, analyzing the percentage of cells containing the protein in the nucleus, the cytoplasm, or both locations. Our studies showed that the Fos protein contains several regions which can act independently to translocate the protein into the nucleus.

journal_name

Cell Biol Int

authors

Campos MA,Kroon EG,Gentz R,Ferreira PC

doi

10.1006/cbir.1998.0323

keywords:

subject

Has Abstract

pub_date

1999-01-01 00:00:00

pages

81-8

issue

1

eissn

1065-6995

issn

1095-8355

pii

S1065-6995(98)90323-7

journal_volume

23

pub_type

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