SSA1 Antibody

1. Hsp90 (Hsp82) and yeast Hsp70 (Ssa1), directly interact in vitro in the absence of the yeast Hop homolog (Sti1), and identify a region in the middle domain of yeast Hsp90 that is required for the interaction. PMID: 29463764
2. Studied deletions of two major chaperone proteins, SSA1 and SSB1, from the HSP70 chaperone network in Sacchromyces cerevisiae. PMID: 25689132
3. yeast expressing P417L or P417S as the only copy of Ssa were temperature sensitive and exhibited defects in Ssa1-dependent protein translocation and misfolded protein degradation. PMID: 25913688
4. Nearly all interactions remained unchanged or decreased after DNA damage, but 5 proteins increased interactions with Ssa1 and/or Hsp82, including the ribonucleotide reductase (RNR) subunit Rnr4. PMID: 25452130
5. The major ubiquitin ligase targeting the superfluous Fas2 subunit to the proteasome is Ubr1. The ubiquitin-conjugating enzymes Ubc2 and Ubc4 assist the degradation process. PMID: 25564609
6. Ssa1p and Swa2p cooperatively disassemble yeast clathrin coat baskets PMID: 23913685
7. The Hsp70 Chaperone Ssa1 and the AAA-Type ATPase Cdc48 Are Required for Ubr1-Dependent ERAD of Ste6*. PMID: 23988329
8. Data indicate that the Hsp70, Ssa1p, facilitates an interaction between a novel misfolded substrate and San1p. PMID: 23653356
9. Sis1 and Hsp70 operate sequentially with the quality control E3 ubiquitin ligase Ubr1 to target short-lived green fluorescent protein for degradation. PMID: 23341891
10. findings demonstrate that Hsp70 is a proximal sensor for Hsf1-mediated cytoprotection and can discriminate between two distinct environmental stressors PMID: 22809627
11. T36 phosphorylation triggers displacement of Ydj1, allowing Ssa1 to bind the G1 cyclin Cln3 and promote its degradation; these results establish an active role for Hsp70 chaperones as signal transducers mediating growth control of G1 cyclin abundance and activity. PMID: 23217712
12. the client binding domain of Hsc70 and Ssa1p binds two regions within alpha-Syn similar to a tweezer, with the first spanning residues 10-45 and the second spanning residues 97-102. PMID: 22843682
13. a role for Ssa1 in mediating localization of nascent peptide-ribosome-mRNA complexes to the mitochondria PMID: 22138184
14. Conformation-dependent Ssa1 hydrophobicity and aggregation play a key role in Ssa1 function. PMID: 20835845
15. observations strongly suggest that lysine 339 and its flanking amino acid stretches are involved in the interaction between Ure2p and Ssa1p PMID: 21078122
16. Ssa1 plays a general role in elimination of gluconeogenic enzymes. PMID: 20513352
17. a potent cochaperone of Ssa1 is Cns1 PMID: 15044454
18. Stimulates prion formation and polymer growth by stabilizing misfolded proteins. PMID: 15545639
19. Sis1 has a bipartite interaction with Ssa in vivo PMID: 15687271
20. Data suggest that Ssa1-21p interferes with disruption of large Sup35p aggregates, which lack or have limited capacity to function as seed, into polymers that function more efficiently as [PSI+] seeds. PMID: 15701791
21. characterized the influence of Hsp104 and Ssa1 on the disassembly of Hsp26 x substrate complexes in vitro and in vivo PMID: 15843375
22. SSB/SSE and SSA/SSE transiently associate with newly synthesized polypeptides with different kinetics PMID: 16219770
23. Sse1 functionally interacts with the Hsp70 chaperones Ssa and Ssb PMID: 16221677
24. A structural basis for the regulation of heat-shock proteins in S. cerevisiae is presented. PMID: 16737444
25. The introduction of Ssa1p improves secretory proteins in Pichia pastoris secretion 4-7 times. PMID: 16889384
26. Jjj1, when overexpressed, is able to partially substitute for the Zuo1:Ssb chaperone machinery by recruiting Ssa to the ribosome, facilitating its interaction with nascent polypeptide chains PMID: 17242366
27. Stability experiments revealed that only Hsp70 proteins Ydj1-protected can hydrolyze ATP under prolonged stress. PMID: 17985367
28. To determine how the mutations alter Hsp70 we analyzed biochemically the substrate-binding domain (SBD) mutant L483W and the nucleotide-binding domain (NBD) mutants A17V and R34K. PMID: 18706386
29. Sse1 exploits a Bag-1-like mechanism to catalyze nucleotide release, which involves opening of the Ssa1 NBD by tilting lobe II. Hsp110 proteins use a unique binding mode to catalyze nucleotide release from Hsp70s by a functionally convergent mechanism PMID: 18948593
30. These results suggest that cytosolic Hsp70 plays multiple roles in TBSV replication, such as affecting the subcellular localization and membrane insertion of the viral replication proteins as well as the assembly of the viral replicase. PMID: 19153242
31. An in vitro replicase assembly assay with Ssa1p(ts) revealed that functional Ssa1p is required during the replicase assembly process, but not during minus- or plus-strand synthesis of Tombusvirus. PMID: 19748649

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KEGG: sce:YAL005C

STRING: 4932.YAL005C