Abstract
Chromosome maintenance region 1 (CRM1), a protein that shares sequence similarities with the karyopherin β family of proteins involved in nuclear import pathway, was shown to form a complex with the leucine-rich nuclear export signal (NES). This interaction was inhibited by leptomycin B, a drug that prevents the function of the CRM1 protein in yeast. To analyze the role of the CRM1-NES interaction in nuclear export, a transport assay based on semipermeabilized cells was developed. In this system, which reconstituted NES-, cytosol-, and energy-dependent nuclear export, leptomycin B specifically blocked export of NES-containing proteins. Thus, the CRM1 protein could act as a NES receptor involved in nuclear protein export.
References
44
Referenced
594
-
Görlich D., Prehn S., Laskey R., Hartmann E., Cell 79, 767 (1994);
(
10.1016/0092-8674(94)90067-1
) / Cell by Görlich D. (1994) -
Moroianu J., Blobel G., Radu A., Proc. Natl. Acad. Sci. U.S.A. 92, 2008 (1995);
(
10.1073/pnas.92.6.2008
) / Proc. Natl. Acad. Sci. U.S.A. by Moroianu J. (1995) -
Imamoto N., et al., EMBO J. 14, 3617 (1995);
(
10.1002/j.1460-2075.1995.tb00031.x
) / EMBO J. by Imamoto N. (1995) -
Weis K., Mattaj I. W., Lamond A., Science 268, 1049 (1995) ;
(
10.1126/science.7754385
) / Science by Weis K. (1995) -
Görlich D., et al., Curr. Biol. 5, 383 (1995);
(
10.1016/S0960-9822(95)00079-0
) / Curr. Biol. by Görlich D. (1995) -
Rexach M., Blobel G., Cell 83, 683 (1995);
(
10.1016/0092-8674(95)90181-7
) / Cell by Rexach M. (1995) -
Iovine M. K., Watkins J. L., Wente S. R., J. Cell Biol. 131, 1699 (1995);
(
10.1083/jcb.131.6.1699
) / J. Cell Biol. by Iovine M. K. (1995) -
Makkerh J. P. S., Dingwall C., Laskey R. A., Curr. Biol. 6, 1025 (1996);
(
10.1016/S0960-9822(02)00648-6
) / Curr. Biol. by Makkerh J. P. S. (1996) -
Pollard V. W., et al., Cell 86, 985 (1996);
(
10.1016/S0092-8674(00)80173-7
) / Cell by Pollard V. W. (1996) 10.1126/science.274.5287.624
-
Rout M., Blobel G., Aitchison J. D., Cell 89, 715 (1997).
(
10.1016/S0092-8674(00)80254-8
) / Cell by Rout M. (1997) 10.1038/365661a0
-
Melchior F., Paschal B., Evans J., Gerace L., J. Cell Biol. 123, 215 (1993);
(
10.1083/jcb.123.6.1649
) / J. Cell Biol. by Melchior F. (1993) - Paschal B., Gerace L., ibid. 129, 925 (1995); / ibid. by Paschal B. (1995)
10.1126/science.272.5258.120
-
Adachi Y., Yanagida M., J. Cell Biol. 108, 1195 (1989);
(
10.1083/jcb.108.4.1195
) / J. Cell Biol. by Adachi Y. (1989) - Toda T., et al., Mol. Cell. Biol. 12, 5474 (1992); / Mol. Cell. Biol. by Toda T. (1992)
-
Fornerod M., et al., EMBO J. 16, 807 (1997).
(
10.1093/emboj/16.4.807
) / EMBO J. by Fornerod M. (1997) -
Görlich D., et al., J. Cell Biol. 138, 65 (1997).
(
10.1083/jcb.138.1.65
) / J. Cell Biol. by Görlich D. (1997) -
Schmidt-Zachmann M., Dargemont C., Kühn L. C., Nigg E. A., Cell 74, 493 (1993).
(
10.1016/0092-8674(93)80051-F
) / Cell by Schmidt-Zachmann M. (1993) - Fischer U., Huber J., Boelens W. C., Mattaj I. W., Luhrmann R., ibid. 82, 475 (1995); / ibid. by Fischer U. (1995)
-
; W. Wen J. L. Meinkoth R. Y. Tsien S. S. Taylor ibid. p. 463; F. Arenzana-Seisdedos et al. J. Cell Sci. 110 369 (1997);
(
10.1242/jcs.110.3.369
) 10.1016/0092-8674(95)90119-1
10.1093/emboj/16.12.3587
- The complete coding sequence of human CRM1 was amplified by polymerase chain reaction from an HPBALL cell cDNA library and cloned into the Kpn I and Xba I sites of pcDNA3 plasmid (Invitrogen).
- Coupled transcription-translation was performed with the TNT system in a reticulocyte lysate (Promega) supplemented with 35 S-methionine and 35 S-cysteine (Amersham). Translation products were analyzed by SDS-PAGE and autoradiography. For immunoprecipitation experiments CRM1 was cotranslated with either wild-type IκBα or IκBα-L234. Five microliters of each TNT reaction was incubated in 40 μl of phosphate-buffered saline (PBS) containing BSA (100 μg/ml) for 30 min at room temperature before being immunoprecipitated with 2.5 μg of either anti–MYC tag or anti–SV5 tag in the presence of 20 μl of protein G–Sepharose (Pharmacia). After being washed in PBS containing 0.1% NP-40 samples were treated with Laemmli sample buffer for 2 min at 95°C and analyzed by 7% SDS-PAGE and fluorography. We obtained NES or mutated NES affinity columns by coupling biotinylated BSA (Pierce) first to sulfosuccinimidyl 4-( N -maleimidomethyl)cyclohexane-1-carboxylate (Pierce) and then to NES peptide (CIQQQLGQLTLENL) or mutated NES peptide (CIQQQAGQATAENA) (9). For each condition 16 μg of biotinylated BSA coupled to the peptides was bound to 20 μl of streptavidin-agarose. After being washed in PBS beads were incubated in 40 μl of PBS containing BSA (100 μg/ml) 3 μl of the TNT reaction and peptides (2 mg/ml) for the competition experiments for 30 min at room temperature. Unbound fractions were collected and sedimented material was extensively washed in PBS before being treated with Laemmli sample buffer for 2 min at 95°C. Samples were analyzed by 7% SDS-PAGE and fluorography.
- Single-letter abbreviations for the amino acid residues are as follows: A Ala; C Cys; E Glu; G Gly; I Ile; L Leu; N Asn; Q Gln; and T Thr.
- B. Ossareh-Nazari F. Bachelerie C. Dargemont data not shown.
-
Yoshida M., et al., Exp. Cell Res. 187, 150 (1990);
(
10.1016/0014-4827(90)90129-X
) / Exp. Cell Res. by Yoshida M. (1990) -
Nishi K., et al., J. Biol. Chem. 269, 6320 (1994).
(
10.1016/S0021-9258(17)37374-X
) / J. Biol. Chem. by Nishi K. (1994) - For transient expression experiments HeLa cells were trypsinized and resuspended in Dulbecco's modified Eagle's medium supplemented with 10% fetal bovine serum (FBS) and 15 mM Hepes (pH 7.5) at 25 × 10 6 cells/ml. Fifty microliters of DNA mix (210 mM NaCl 10 μg of specific DNA and 30 μg of carrier DNA) was added to 200 μl of cell suspension before electroporation (950 μF 240 V with Gene Pulser II; Bio-Rad). Cells were subsequently cultured for 18 hours before analysis. Forty percent of cells were transfected by this protocol.
-
Adam S. A., Stern-Marr R., Gerace L., J. Cell Biol. 111, 807 (1990);
(
10.1083/jcb.111.3.807
) / J. Cell Biol. by Adam S. A. (1990) - . Transfected cells were permeabilized with digitonin (55 μg/ml; Sigma) in 20 mM Hepes (pH 7.4) 110 mM potassium acetate (pH 7.4) 5 mM NaCl 2 mM MgCl 2 1 mM EGTA 1 mM dithiothreitol (DTT) and protease inhibitors (leupeptin pepstatin and aprotinin) for 5 min at 4°C. After being washed twice in the same buffer cells were incubated for 30 min at 23°C in the different incubation conditions. A high-speed supernatant was prepared from Xenopus eggs resuspended in 20 mM Hepes (pH 7.5) 70 mM KCl 1 mM DTT and 250 mM sucrose and centrifuged at 13 000 g and then at 190 000 g. The addition of ATP corresponded to 1 mM ATP 10 mM creatine phosphate and creatine phosphokinase (4 U/ml).
- For indirect immunofluorescence analysis cells were fixed for 10 min with 2% paraformaldehyde and 0.1% glutaraldehyde and permeabilized with 0.1% Triton X-100 for 5 min. A monoclonal antibody (mAb) to MYC (9E10) was applied for 30 min followed by a 30-min incubation with fluorescein isothiocyanate–conjugated donkey anti–mouse immunoglobulin G (Jackson). Cover slips were mounted in Moviol (Hoechst Frankfurt Germany). Photographs corresponding to the different conditions were taken with the same setting parameters.
- Cells were treated first with 1 μg of deoxyribonuclease I before being lysed in Laemmli sample buffer containing 8 M urea. Proteins were resolved by 10% SDS-PAGE and transferred to nitrocellulose membrane. Membranes were incubated with mAb 9E10 and an mAb to hnRNP C (4F4) followed by an incubation with anti-mouse coupled to horseradish peroxidase and finally developed with the chemiluminescence protein immunoblotting reagents (POD Boehringer Mannheim Germany). Quantitation of protein immunoblots was performed with the Bioprint acquisition system and Bioprofil program (Vilbert Lourmat).
-
Nakielny S., Dreyfuss G., J. Cell Biol. 134, 1365 (1996).
(
10.1083/jcb.134.6.1365
) / J. Cell Biol. by Nakielny S. (1996) 10.1016/S1074-5521(97)90257-X
-
Fritz C. C., Zapp M. L., Green M. R., Nature 376, 530 (1995);
(
10.1038/376530a0
) / Nature by Fritz C. C. (1995) -
Stutz F., Neville M., Rosbash M., Cell 82, 495 (1995);
(
10.1016/0092-8674(95)90438-7
) / Cell by Stutz F. (1995) - ; H. P. Bogerd R. A. Fridell S. Madore B. C. Cullen ibid. p. 485; F. Stutz
-
Izaurralde E., Mattaj I. W., Rosbach M., Mol. Cell. Biol. 16, 7144 (1996).
(
10.1128/MCB.16.12.7144
) / Mol. Cell. Biol. by Izaurralde E. (1996) 10.1126/science.276.5320.1842
-
Tachibana T., Hieda M., Sekimoto T., Yoneda Y., FEBS Lett. 397, 177 (1996).
(
10.1016/S0014-5793(96)01180-5
) / FEBS Lett. by Tachibana T. (1996) - We thank Novartis and particularly B. Wolff for leptomycin B; G. Dreyfuss for the anti–hnRNP C; C. Maison for helpful and stimulating discussions; and D. Louvard J. Salamero and R. Golsteyn for critical reading of the manuscript. Supported by grants from Action Thematique et Incitative sur Programme et Equipes–CNRS the Association de Recherche Contre le Cancer and the European Communities Concerted Action (project: Rocio II).
Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 27, 2002, 5:44 a.m.) |
Deposited | 1 year, 7 months ago (Jan. 13, 2024, 12:02 a.m.) |
Indexed | 3 weeks, 1 day ago (Aug. 7, 2025, 4:27 p.m.) |
Issued | 27 years, 10 months ago (Oct. 3, 1997) |
Published | 27 years, 10 months ago (Oct. 3, 1997) |
Published Print | 27 years, 10 months ago (Oct. 3, 1997) |
@article{Ossareh_Nazari_1997, title={Evidence for a Role of CRM1 in Signal-Mediated Nuclear Protein Export}, volume={278}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.278.5335.141}, DOI={10.1126/science.278.5335.141}, number={5335}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Ossareh-Nazari, Batool and Bachelerie, Françoise and Dargemont, Catherine}, year={1997}, month=oct, pages={141–144} }