MSD1/YPL104W Summary Help

Standard Name MSD1 1
Systematic Name YPL104W
Alias LPG5
Feature Type ORF, Verified
Description Mitochondrial aspartyl-tRNA synthetase; required for acylation of aspartyl-tRNA; yeast and bacterial aspartyl-, asparaginyl-, and lysyl-tRNA synthetases contain regions with high sequence similarity, suggesting a common ancestral gene (1, 2 and see Summary Paragraph)
Name Description Mitochondrial aminoacyl-tRNA Synthetase, Aspartate (D) 1
Gene Product Alias mitochondrial aspartyl-tRNA synthetase 1
Chromosomal Location
ChrXVI:355700 to 357676 | ORF Map | GBrowse
Gene Ontology Annotations All MSD1 GO evidence and references
  View Computational GO annotations for MSD1
Molecular Function
Manually curated
Biological Process
Manually curated
Cellular Component
Manually curated
Classical genetics
Large-scale survey
67 total interaction(s) for 64 unique genes/features.
Physical Interactions
  • Affinity Capture-MS: 8
  • Affinity Capture-RNA: 1
  • Biochemical Activity: 2

Genetic Interactions
  • Negative Genetic: 36
  • Phenotypic Suppression: 1
  • Positive Genetic: 16
  • Synthetic Lethality: 2
  • Synthetic Rescue: 1

Expression Summary
Length (a.a.) 658
Molecular Weight (Da) 75,460
Isoelectric Point (pI) 9.23
Phosphorylation PhosphoGRID | PhosphoPep Database
sequence information
ChrXVI:355700 to 357676 | ORF Map | GBrowse
Last Update Coordinates: 2011-02-03 | Sequence: 1996-07-31
Subfeature details
Most Recent Updates
Coordinates Sequence
CDS 1..1977 355700..357676 2011-02-03 1996-07-31
Retrieve sequences
Analyze Sequence
S288C only
S288C vs. other species
S288C vs. other strains
External Links All Associated Seq | E.C. | Entrez Gene | Entrez RefSeq Protein | MIPS | Search all NCBI (Entrez) | UniProtKB
Primary SGDIDS000006025

About aminoacyl-tRNA synthetases...

In a process critical for accurate translation of the genetic code, aminoacyl-tRNA synthetases (aka aminoacyl-tRNA ligases) attach amino acids specifically to cognate tRNAs, thereby "charging" the tRNAs. The catalysis is accomplished via a two-step mechanism. First, the synthetase activates the amino acid in an ATP-dependent reaction, producing aminoacyl-adenylate and releasing inorganic pyrophosphate (PPi). Second, the enzyme binds the correct tRNA and transfers the activated amino acid to either the 2' or 3' terminal hydroxyl group of the tRNA, forming the aminoacyl-tRNA and AMP (3, 4 and references therein).

Aminoacyl-tRNA synthetases possess precise substrate specificity and, despite their similarity in function, vary in size, primary sequence and subunit composition. Individual members of the aminoacyl-tRNA synthetase family can be categorized in one of two classes, depending on amino acid specificity. Class I enzymes (those specific for Glu, Gln, Arg, Cys, Met, Val, Ile, Leu, Tyr and Trp) typically contain two highly conserved sequence motifs, are monomeric or dimeric, and aminoacylate at the 2' terminal hydroxyl of the appropriate tRNA. Class II enzymes (those specific for Gly, Ala, Pro, Ser, Thr, His, Asp, Asn, Lys and Phe) typically contain three highly conserved sequence motifs, are dimeric or tetrameric, and aminoacylate at the 3' terminal hydroxyl of the appropriate tRNA (3, 4, 5 and references therein).

Last updated: 2008-07-14 Contact SGD

References cited on this page View Complete Literature Guide for MSD1
1) Gampel A and Tzagoloff A  (1989) Homology of aspartyl- and lysyl-tRNA synthetases. Proc Natl Acad Sci U S A 86(16):6023-7
2) Gatti DL and Tzagoloff A  (1991) Structure and evolution of a group of related aminoacyl-tRNA synthetases. J Mol Biol 218(3):557-68
3) Delarue M  (1995) Aminoacyl-tRNA synthetases. Curr Opin Struct Biol 5(1):48-55
4) Arnez JG and Moras D  (1997) Structural and functional considerations of the aminoacylation reaction. Trends Biochem Sci 22(6):211-6
5) Eriani G, et al.  (1990) Partition of tRNA synthetases into two classes based on mutually exclusive sets of sequence motifs. Nature 347(6289):203-6