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- *****************************
- * WHEP-TRS domain signature *
- *****************************
-
- A conserved domain of 46 amino acids has been shown [1] to exist in a number
- of higher eukaryote aminoacyl-transfer RNA synthetases. This domain is present
- one to six times in the following enzymes:
-
- - Mammalian multifunctional aminoacyl-tRNA synthetase. The domain is present
- three times in a region that separates the N-terminal glutamyl-tRNA
- synthetase domain from the C-terminal prolyl-tRNA synthetase domain.
- - Drosophila multifunctional aminoacyl-tRNA synthetase. The domain is present
- six times in the intercatalytic region.
- - Mammalian tryptophanyl-tRNA synthetase. The domain is found at the N-
- terminal extremity.
- - Bombyx mori glycyl-tRNA synthetase. The domain is found at the N-terminal
- extremity [2].
- - Mammalian histidyl-tRNA synthetase. The domain is found at the N-terminal
- extremity.
-
- This domain, which we call WHEP-TRS, could contain a central alpha-helical
- region and may play a role in the association of tRNA-synthetases into
- multienzyme complexes.
-
- We developed a signature pattern based on the first 29 positions of the WHEP-
- domain.
-
- -Consensus pattern: Q-G-[DE]-x-[LIV]-[KR]-x(2)-K-x(2)-[KN]-[AS]-x(4)-[LIV]-
- [DENK]-x(2)-V-x(2)-L-x(3)-K
- -Sequences known to belong to this class detected by the pattern: ALL, except
- for hamster histidyl-tRNA synthetase whose sequence may be incorrect in that
- region.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: June 1994 / Pattern and text revised.
-
- [ 1] Cerini C., Kerjan P., Astier M., Gratecos D., Mirande M., Semeriva M.
- EMBO J. 10:4267-4277(1991).
- [ 2] Nada S., Chang P.K., Dignam J.D.
- J. Biol. Chem. 268:7660-7667(1993).
-