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. 2022 Feb 28;11(5):829. doi: 10.3390/cells11050829

Table 2.

Cysteine residues in bacteria, yeast and human Hsp70 homologs.

Hsp70 Homolog Cysteine Residues (Entry in UniProtKB)
Escherichia coli DnaK Cys15 (P0A6Y8)
Escherichia coli HscA (Hsc66) Cys315, Cys448 (P0A6Z1)
Escherichia coli HscC (Hsc62) Cys236, Cys242, Cys261, Cys344, Cys360 (P77319)
Saccharomyces cerevisiae Ssa1 (cytosol) Cys15, Cys264, Cys303 (P10591)
Saccharomyces cerevisiae Ssa2 (cytosol) Cys15, Cys264, Cys303 (P10592)
Saccharomyces cerevisiae Ssa3 (cytosol) Cys15, Cys304 (P09435)
Saccharomyces cerevisiae Ssa4 (cytosol) Cys15, Cys304 (P22202)
Saccharomyces cerevisiae Ssb1 (cytosol) Cys20, Cys435, Cys454 (P11484)
Saccharomyces cerevisiae Ssb2 (cytosol) Cys20, Cys454 (P40150)
Saccharomyces cerevisiae Sse1 (cytosol Hsp110) Cys142, Cys211, Cys228, Cys380, Cys484 (P32589)
Saccharomyces cerevisiae Sse2 (cytosol Hsp110) Cys142, Cys211, Cys380, Cys484 (P32590)
Saccharomyces cerevisiae Ssz1 (cytosol) Cys81, Cys86 (P38788)
Saccharomyces cerevisiae Ssc1 (mitochondria) None (P0CS90)
Saccharomyces cerevisiae Ssc2 (Ssq1) (mitochondria) Cys134 (Q05931)
Saccharomyces cerevisiae Ssc3 (Ecm10) (mitochondria) None (P39987)
Saccharomyces cerevisiae Ssd1 (Kar2, BiP, Grp78) (ER) Cys63 (P16474)
Saccharomyces cerevisiae Lhs1 (Grp170) (ER) Cys520, Cys545, Cys547 (P36016)
Human HspA1A (Hsp72) (cytosol, nucleus, cell membrane, extracellular exosomes) Cys17, Cys267, Cys306, Cys574, Cys603 (P0DMV8)
Human HspA1B (Hsp72) (cytosol, nucleus, extracellular exosomes) Cys17, Cys267, Cys306, Cys574, Cys603 (P0DMV9)
Human HspA1L (cytosol, nucleus) Cys19, Cys269, Cys308, Cys576, Cys605, Cys617, Cys622 (P34931)
Human HspA2 (cytosol, nucleus, cell membrane, extracellular exosomes) Cys18, Cys191, Cys270, Cys577, Cys606 (P54652)
Human HspA4 (Apg2) (cytosol, extracellular exosome, mitochondrion, nucleus) Cys13, Cys34, Cys38, Cys140, Cys146, Cys167, Cys213, Cys245, Cys270, Cys290, Cys310, Cys376, Cys380, Cys417, Cys779 (P34932)
Human HspA4L (Apg1, Osp94) (cytosol, nucleus) Cys13, Cys34, Cys38, Cys140, Cys167, Cys213, Cys245, Cys270, Cys290, Cys310, Cys376, Cys380, Cys417, Cys421, Cys540, Cys589, Cys740, Cys782 (O95757)
Human HspA5 (BiP, Grp78) (ER, extracellular exosomes) Cys41, Cys420 (P11021)
Human HspA6 (Hsp70B’) (cytosol, extracellular exosomes) Cys19, Cys108, Cys269, Cys308, Cys387, Cys576, Cys605, Cys624 (P17066)
Human HspA7 (Hsp70B) (blood microparticles, extracellular exosomes) Cys19, Cys108, Cys269, Cys308 (P48741)
human HspA8 (Hsc70, Hsc73) (cytosol, nucleus, cell membrane, extracellular exosomes) Cys17, Cys267, Cys574, Cys603 (P11142)
Human HspA9 (Grp75, mt-Hsp70) (mitochondria, nucleus) Cys66, Cys317, Cys366, Cys487, Cys608 (P38646)
Human HspA12A (extracellular exosomes, nucleus) Cys80, Cys246, Cys502, Cys564, Cys621 (O43301)
Human HspA12B (endothelial cells, intracellular, blood plasma) Cys36, Cys106, Cys250, Cys321, Cys365, Cys450, Cys570, Cys595, Cys610, Cys611, Cys626, Cys639 (Q96MM6)
Human HspA13 (Stch) (ER, extracellular exosomes, microsomes) Cys43 (P48723)
Human HspA14 (Hsp60, Hsp70L1) (cytosol, membrane) Cys10, Cys14, Cys89, Cys280, Cys293, Cys304, Cys311, Cys335, Cys394, Cys440, Cys492, Cys500 (Q0VDF9)
Human HspH1 (Hsp105, Hsp110) (microtubule, cytosol, extracellular region or secreted, nucleus) Cys13, Cys34, Cys48, Cys140, Cys167, Cys213, Cys245, Cys270, Cys290, Cys310, Cys376, Cys380, Cys516, Cys650, Cys658, Cys796, Cys845 (Q92598)
Human Hyou1 (Grp170, Orp150) (ER, extracellular region or secreted) Cys15, Cys240, Cys352, Cys805 (Q9Y4L1)