This entry represents the N-terminal helical domain found in the yeast SLS1 protein. SLS1 is a fungal protein found bound to the mitochondrial inner-membrane [1]. It reacts physically with fungal Kar2p to promote translocation across the endoplasmic-reticulum membrane. This action appeared to be mediated via the promotion of the Sec63p-mediated activation of Kar2p's ATPase activity. This indicates that the Sls1p protein is a GrpE-like protein in the endoplasmic reticulum. In S.cerevisiae the SLS1 gene (ScSLS1) is not essential but is also involved in ERAD and folding [2,3].

1: SLS1, a new Saccharomyces cerevisiae gene involved in mitochondrial metabolism, isolated as a syntheticlethal in association with an SSM4 deletion. Rouillard JM, Dufour ME, Theunissen B, Mandart E, Dujardin G, Lacroute F; Mol Gen Genet. 1996;252:700-708. PMID:8917313

2: Sls1p is a membrane-bound regulator of transcription-coupled processes involved in Saccharomyces cerevisiae mitochondrial gene expression. Bryan AC, Rodeheffer MS, Wearn CM, Shadel GS; Genetics. 2002;160:75-82. PMID:11805046

3: Sls1p stimulates Sec63p-mediated activation of Kar2p in a conformation-dependent manner in the yeast endoplasmic reticulum. Kabani M, Beckerich JM, Gaillardin C; Mol Cell Biol. 2000;20:6923-6934. PMID:10958688