Abstract
The posttranslational translocation of proteins across the endoplasmic reticulum (ER) membrane in yeast requires ATP hydrolysis and the action of hsc70s (DnaK homologues) and DnaJ homologues in both the cytosol and ER lumen. Although the cytosolic hsc70 (Ssa1p) and the ER lumenal hsc70 (BiP) are homologous, they cannot substitute for one another, possibly because they interact with specific DnaJ homologues on each side of the ER membrane. To investigate this possibility, we purified Ssa1p, BiP, Ydj1p (a cytosolic DnaJ homologue), and a GST–63Jp fusion protein containing the lumenal DnaJ region of Sec63p. We observed that BiP, but not Ssa1p, is able to associate with GST–63Jp and that Ydj1p stimulates the ATPase activity of Ssa1p up to 10-fold but increases the ATPase activity of BiP by <2-fold. In addition, Ydj1p and ATP trigger the release of an unfolded polypeptide from Ssa1p but not from BiP. To understand further how BiP drives protein translocation, we purified four dominant lethal mutants of BiP. We discovered that each mutant is defective for ATP hydrolysis, fails to undergo an ATP-dependent conformational change, and cannot interact with GST–63Jp. Measurements of protein translocation into reconstituted proteoliposomes indicate that the mutants inhibit translocation even in the presence of wild-type BiP. We conclude that a conformation- and ATP-dependent interaction of BiP with the J domain of Sec63p is essential for protein translocation and that the specificity of hsc70 action is dictated by their DnaJ partners.
Bibliography
McClellan, A. J., Endres, J. B., Vogel, J. P., Palazzi, D., Rose, M. D., & Brodsky, J. L. (1998). Specific Molecular Chaperone Interactions and an ATP-dependent Conformational Change Are Required during Posttranslational Protein Translocation into the Yeast ER. Molecular Biology of the Cell, 9(12), 3533â3545.
References
70
Referenced
69
10.1074/jbc.272.33.20901
/ J. Biol. Chem. by Azem A. (1997)10.1128/MCB.16.11.6444
/ Mol. Cell. Biol. by Baxter B.K. (1996)10.1128/MCB.16.8.4378
/ Mol. Cell. Biol. by Becker J. (1996)10.1016/S0021-9258(18)31449-2
/ J. Biol. Chem. by Blond-Elguindi S. (1993)10.1021/bi00465a021
/ Biochemistry by Brindle K. (1990)10.1016/S0968-0004(96)80163-0
/ Trends Biochem. Sci. by Brodsky J.L. (1996)10.1006/abio.1997.2028
/ Anal. Biochem. by Brodsky J.L. (1997)10.1073/pnas.92.21.9643
/ Proc. Natl. Acad. Sci. USA by Brodsky J.L. (1995)10.1083/jcb.120.1.95
/ J. Cell Biol. by Brodsky J.L. (1993)10.1083/jcb.123.6.1355
/ J. Cell Biol. by Brodsky J.L. (1993)10.1083/jcb.135.5.1229
/ J. Cell Biol. by Bush G.L. (1996)10.1016/S0092-8674(05)80063-7
/ Cell by Caplan A.J. (1992)10.1042/bj3220853
/ Biochem. J. by Chamberlain L.H. (1997)10.1016/S0021-9258(19)75848-7
/ J. Biol. Chem. by Chappell T.G. (1987)10.1379/1466-1268(1998)003<0028:SFAEOD>2.3.CO;2
/ Cell Stress & Chaperones by Cheetham M.E. (1998)10.1038/332805a0
/ Nature by Chirico W.J. (1988)10.1074/jbc.271.48.30299
/ J. Biol. Chem. by Corsi A.K. (1996)10.1083/jcb.137.7.1483
/ J. Cell. Biol. by Corsi A.K. (1997)10.1016/0014-5793(95)00024-4
/ FEBS Lett. by Cyr D.M. (1995)10.1016/S0021-9258(17)36953-3
/ J. Biol. Chem. by Cyr D.M. (1994)10.1016/0968-0004(94)90281-X
/ Trends Biochem. Sci. by Cyr D.M. (1994)10.1016/S0021-9258(19)36777-8
/ J. Biol. Chem. by Cyr D.M. (1992)10.1038/332800a0
/ Nature by Deshaies R.J. (1988)10.1128/MCB.12.7.3288
/ Mol. Cell. Biol. by Feldheim D. (1992)10.1038/346623a0
/ Nature by Flaherty K.M. (1990)10.1016/S0021-9258(18)43837-9
/ J. Biol. Chem. by Fourie A.M. (1994)10.1074/jbc.271.35.21559
/ J. Biol. Chem. by Fung K.L. (1996){'key': 'B28', 'first-page': '417', 'author': 'Gething M.-J.', 'year': '1995', 'journal-title': 'Protein Kinesis: The Dynamics of Protein Trafficking and Stability, Cold Spring Harbor Symposia on Quantitative Biology'}
/ Protein Kinesis: The Dynamics of Protein Trafficking and Stability, Cold Spring Harbor Symposia on Quantitative Biology by Gething M.-J. (1995)10.1038/306387a0
/ Nature by Haas I.G. (1983)10.1074/jbc.271.48.30610
/ J. Biol. Chem. by Hamilton T.G. (1996)10.1016/S0092-8674(00)81403-8
/ Cell by Hamman B.D. (1998)10.1016/0092-8674(86)90325-9
/ Cell by Hansen W. (1986)10.1038/381571a0
/ Nature by Hartl F.U. (1996)10.1073/pnas.93.11.5269
/ Proc. Natl. Acad. Sci. USA by Hendershot L. (1996)10.1074/jbc.272.10.6141
/ J. Biol. Chem. by Jiang R.-F. (1997)10.1016/S0962-8924(97)01029-5
/ Trends Cell Biol. by Johnson A.E. (1997)10.1074/jbc.270.50.30051
/ J. Biol. Chem. by Kamath-Loeb A.S. (1995)10.1002/j.1460-2075.1989.tb03529.x
/ EMBO J. by Kassenbrock C.K. (1989)10.1074/jbc.270.38.22535
/ J. Biol. Chem. by King C. (1995)10.1016/0014-5793(95)00704-D
/ FEBS Lett. by Levy E.J. (1995)10.1016/S0021-9258(18)98713-2
/ J. Biol. Chem. by Liberek K. (1991)10.1083/jcb.131.5.1163
/ J. Cell Biol. by Lyman S.K. (1995)10.1016/S0092-8674(00)81861-9
/ Cell by Lyman S.K. (1997)10.1126/science.277.5328.938
/ Science by Matlack K.E.S. (1997)10.1083/jcb.132.3.291
/ J. Cell Biol. by McCracken A.A. (1996)10.1093/genetics/134.1.159
/ Genetics by Nelson M.K. (1993)10.1073/pnas.88.4.1565
/ Proc. Natl. Acad. Sci. USA by Nguyen T.H. (1991)10.1074/jbc.272.20.12889
/ J. Biol. Chem. by Nishikawa S. (1997)10.1016/0092-8674(89)90059-7
/ Cell by Normington K. (1989)10.1074/jbc.270.5.2247
/ J. Biol. Chem. by O’Brien M.C. (1995)10.1016/0092-8674(95)90077-2
/ Cell by Panzner S. (1995)10.1146/annurev.bi.65.070196.001415
/ Annu. Rev. Biochem. by Rapoport T.A. (1996)10.1016/0092-8674(87)90712-4
/ Cell by Rose M.D. (1987)10.1016/0092-8674(89)90058-5
/ Cell by Rose M.D. (1989)10.1083/jcb.109.6.2641
/ J. Cell Biol. by Rothblatt J.A. (1989)10.1002/j.1460-2075.1986.tb04318.x
/ EMBO J. by Rothblatt J.A. (1986)10.1083/jcb.109.6.2665
/ J. Cell Biol. by Sadler I. (1989)10.1016/0092-8674(92)90415-9
/ Cell by Sanders S.L. (1992)10.1083/jcb.137.4.813
/ J. Cell Biol. by Saris N. (1997)10.1083/jcb.129.4.979
/ J. Cell Biol. by Schlenstedt G. (1995)10.1091/mbc.4.11.1145
10.1016/S0021-9258(18)43641-1
/ J. Biol. Chem. by Shlomai J. (1980)10.1128/MCB.17.8.4761
/ Mol. Cell. Biol. by Srinivasan A. (1997)10.1083/jcb.110.6.1885
/ J. Cell Biol. by Vogel J.P. (1990)10.1083/jcb.102.5.1543
/ J. Cell Biol. by Waters M.G. (1986)10.1074/jbc.270.44.26677
/ J. Biol. Chem. by Wei J.-Y. (1995)10.1074/jbc.270.44.26670
/ J. Biol. Chem. by Wei J.-Y. (1995)10.1128/MCB.7.7.2568
/ Mol. Cell. Biol. by Werner-Washburne M. (1987)10.1016/S0021-9258(18)53190-2
/ J. Biol. Chem. by Wiech H. (1993)10.1074/jbc.270.18.10412
/ J. Biol. Chem. by Ziegelhoffer T. (1995)
Dates
Type | When |
---|---|
Created | 12 years, 1 month ago (July 2, 2013, 7:12 p.m.) |
Deposited | 3 years, 6 months ago (Feb. 26, 2022, 9:35 p.m.) |
Indexed | 1 year, 2 months ago (June 28, 2024, 6:06 p.m.) |
Issued | 26 years, 8 months ago (Dec. 1, 1998) |
Published | 26 years, 8 months ago (Dec. 1, 1998) |
Published Print | 26 years, 8 months ago (Dec. 1, 1998) |
@article{McClellan_1998, title={Specific Molecular Chaperone Interactions and an ATP-dependent Conformational Change Are Required during Posttranslational Protein Translocation into the Yeast ER}, volume={9}, ISSN={1939-4586}, url={http://dx.doi.org/10.1091/mbc.9.12.3533}, DOI={10.1091/mbc.9.12.3533}, number={12}, journal={Molecular Biology of the Cell}, publisher={American Society for Cell Biology (ASCB)}, author={McClellan, Amie J. and Endres, James B. and Vogel, Joseph P. and Palazzi, Debra and Rose, Mark D. and Brodsky, Jeffrey L.}, editor={Walter, Peter}, year={1998}, month=dec, pages={3533–3545} }