Table 1

The 20 most common protein domains in C. elegans (41). RRM, RNA recognition motif; RBD, RNA binding domain; RNP, ribonuclear protein motif; UDP, uridine 5′-diphosphate.

6507 TM chemoreceptor
410Eukaryotic protein kinase domain
240Zinc finger, C4 type (two domains)
1407 TM receptor (rhodopsin family)
130Zinc finger, C2H2 type
120Lectin C-type domain short and long forms
100RNA recognition motif (RRM, RBD, or RNP domain)
 90Zinc finger, C3HC4 type (RING finger)
 90Protein-tyrosine phosphatase
 90Ankyrin repeat
 90WD domain, G-beta repeats
 80Homeobox domain
 80Neurotransmitter-gated ion channel
 80Cytochrome P450
 80Helicases conserved C-terminal domain
 80Alcohol/other dehydrogenases, short-chain type
 70UDP-glucoronosyl and UDP-glucosyl transferases
 70EGF-like domain
 70Immunoglobulin superfamily