CELE_T09B4.10, 1G758, tag-69, T09B4.10

chn-1 encodes an ortholog of mammalian carboxyl-terminus of Hsc70 interacting protein (CHIP), an E4 ubiquitin-chain elongation factor; chn-1 is ubiquitously expressed; chn-1(by155) mutants are viable and superficially normal, but have reduced fertility and arrest as larvae if subjected to heat shock; chn-1 overexpression causes either embryonic lethality (if strong) or defective egg-laying and locomotion, along with constitutive dauer formation (if weak); chn-1(by155) mutations suppress viable unc-45(e286ts) and unc-45(m94ts) mutations, but not lethal unc-45(st604) ones; chn-1(by155) mutants, unlike wild-type, show defective sarcomeres if overexpressing unc-45 from a extrachromosomal array; CHN-1 binds the ubiquitin conjugating enzyme UFD-2, which in turn binds the Hsp90 cochaperone UNC-45; UNC-45 is a substrate for CHN-1- and UFD-2-dependent multiubiquitination; the parkin ortholog PDR-1 binds CHN-1, and requires CHN-1 for self-ubiquitination; chn-1(RNAi) animals accumulate abnormally phosphorylated tau proteins.

37756

6239