e102 : weak coiler tends to back loopy movement in reverse; fairly active slightly small and thin. ES3 ME2. NA2 (e126).
[C.elegansII] e102 : weak coiler, tends to back, loopy movement in reverse; fairly active; slightly small and thin; Ric. ES3 ME2. OA1: e126. [Brenner 1974; Nguyen et al. 1995]
[Nonet M] unc-10(e102) was phenotypically rescued by both cosmid C34H12 and a 16 kb BamHI/KpnI subclone of this cosmid that contains effectively only the rim-1 gene. The rim-1 gene (rim for Rab Interacting Molecule) is the combined genefinder products T10A3.1 and K03A1.3 (with several mistakes in the prediction by genefinder). Furthermore, unc-10(md330) and unc-10(md1117) both contain deletions of the vast majority of the rim-1 gene. Specifically, md1117 deleted 8.6 kb that extends from approximately 500 bp 5' of the atg to 200 bp 3' of the TAA of the rim-1 gene product.
unc-10 encodes a protein with zinc-finger, Q/N-rich, PDZ, and C2 domains that is homologous to vertebrate Rim1, a presynaptic protein which binds, and effects the activity of, synaptic vesicle-associated GTP-Rab3; UNC-10 is required for normal locomotion and synaptic transmission, and localizes to a subdomain of presynaptic termini, where it probably acts to regulate the priming step of presynaptic vesicle fusion by promoting conformational changes in syntaxin.
Enables small GTPase binding activity. Involved in several processes, including chemical synaptic transmission; defecation; and positive regulation of cholinergic synaptic transmission. Located in axon and presynaptic active zone. Expressed in dorsal nerve cord; nerve ring; nervous system; uv1; and ventral nerve cord. Is an ortholog of human RIMS1 (regulating synaptic membrane exocytosis 1).