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Modulation of in vivo HSP70 chaperone activity by Hip and Bag-1.

Nollen EA, Kabakov AE, Brunsting JF, Kanon B, Höhfeld J, Kampinga HH.

J Biol Chem. 2001 Feb 16;276(7):4677-82. Epub 2000 Nov 13.


Bag-1M accelerates nucleotide release for human Hsc70 and Hsp70 and can act concentration-dependent as positive and negative cofactor.

Gassler CS, Wiederkehr T, Brehmer D, Bukau B, Mayer MP.

J Biol Chem. 2001 Aug 31;276(35):32538-44. Epub 2001 Jul 5.


Bag1 functions in vivo as a negative regulator of Hsp70 chaperone activity.

Nollen EA, Brunsting JF, Song J, Kampinga HH, Morimoto RI.

Mol Cell Biol. 2000 Feb;20(3):1083-8.


BAG-1 modulates the chaperone activity of Hsp70/Hsc70.

Takayama S, Bimston DN, Matsuzawa S, Freeman BC, Aime-Sempe C, Xie Z, Morimoto RI, Reed JC.

EMBO J. 1997 Aug 15;16(16):4887-96.


GrpE-like regulation of the hsc70 chaperone by the anti-apoptotic protein BAG-1.

Höhfeld J, Jentsch S.

EMBO J. 1997 Oct 15;16(20):6209-16. Erratum in: EMBO J 1998 Feb 2;17(3):847.


Distinct isoforms of the cofactor BAG-1 differentially affect Hsc70 chaperone function.

Lüders J, Demand J, Papp O, Höhfeld J.

J Biol Chem. 2000 May 19;275(20):14817-23.


Overexpression of the cochaperone CHIP enhances Hsp70-dependent folding activity in mammalian cells.

Kampinga HH, Kanon B, Salomons FA, Kabakov AE, Patterson C.

Mol Cell Biol. 2003 Jul;23(14):4948-58.


An evolutionarily conserved family of Hsp70/Hsc70 molecular chaperone regulators.

Takayama S, Xie Z, Reed JC.

J Biol Chem. 1999 Jan 8;274(2):781-6.


Differential effects of the hsp70-binding protein BAG-1 on glucocorticoid receptor folding by the hsp90-based chaperone machinery.

Kanelakis KC, Morishima Y, Dittmar KD, Galigniana MD, Takayama S, Reed JC, Pratt WB.

J Biol Chem. 1999 Nov 26;274(48):34134-40.


hsp70 interacting protein Hip does not affect glucocorticoid receptor folding by the hsp90-based chaperone machinery except to oppose the effect of BAG-1.

Kanelakis KC, Murphy PJ, Galigniana MD, Morishima Y, Takayama S, Reed JC, Toft DO, Pratt WB.

Biochemistry. 2000 Nov 21;39(46):14314-21.


Human Fas-associated factor 1 interacts with heat shock protein 70 and negatively regulates chaperone activity.

Kim HJ, Song EJ, Lee YS, Kim E, Lee KJ.

J Biol Chem. 2005 Mar 4;280(9):8125-33. Epub 2004 Dec 13.


Dissection of the ATP-binding domain of the chaperone hsc70 for interaction with the cofactor Hap46.

Petersen G, Hahn C, Gehring U.

J Biol Chem. 2001 Mar 30;276(13):10178-84. Epub 2000 Dec 19.


BAG-1, a negative regulator of Hsp70 chaperone activity, uncouples nucleotide hydrolysis from substrate release.

Bimston D, Song J, Winchester D, Takayama S, Reed JC, Morimoto RI.

EMBO J. 1998 Dec 1;17(23):6871-8.


Cofactor-induced modulation of the functional specificity of the molecular chaperone Hsc70.

Lüders J, Demand J, Schönfelder S, Frien M, Zimmermann R, Höhfeld J.

Biol Chem. 1998 Oct;379(10):1217-26.


Prediction of novel Bag-1 homologs based on structure/function analysis identifies Snl1p as an Hsp70 co-chaperone in Saccharomyces cerevisiae.

Sondermann H, Ho AK, Listenberger LL, Siegers K, Moarefi I, Wente SR, Hartl FU, Young JC.

J Biol Chem. 2002 Sep 6;277(36):33220-7. Epub 2002 Jun 24.

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