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tRNA curation question

Tanya Berardini tberardi at acoma.Stanford.EDU
Tue Mar 14 11:20:01 PST 2006

We've used 'translational elongation' GO:0006414 for the process annotation.


Harold Drabkin wrote:
> 1. The tRNA does not have the "aminoacyl-tRNA ligase activity ". What 
> amino acid it accepts will depend on what sequence the tRNA has, 
> especially in it's anticodon, to see which codon it would decode 
> (although even THAT is not 100% in some genomes).
> I think at the moment, there is really only one function term that the 
> tRNA has: GO:0030533.
> 2. Process
> A tRNA is not involved in tRNA aminoacylation. It is the substrate of 
> the process. . The aminoacyl-tRNA synthetase is involved in that process.
> However, it is involved in translation (*GO:0043037*); most likely 
> elongation, unless it's an initiator methionine tRNA, in which case it 
> would be involved in elongation;
> 3. component: cytoplasm or mitochondrion or chloroplast. The latter two 
> DO encode some of their own tRNA. But telling by the sequence may be 
> difficult. They are NOT a component of the ribosome or peptidyl 
> transferase.
> Harold
> Pankaj Jaiswal wrote:
>> Hi,
>> This is the first time I am trying to do a tRNA curation and I need 
>> help on the possible GO terms. As I understand my choices of terms are 
>> as follows.
>> -Pankaj
>> ------------------
>> e.g. I have a gene product tRNA-Cysteine
>> Function: GO:0030533 : triplet codon-amino acid adaptor activity
>>     GO:0004817 : cysteine-tRNA ligase activity
>>     GO:0004812 : aminoacyl-tRNA ligase activity
>>     GO:0003729 : mRNA binding
>> Process: GO:0006423 : cysteinyl-tRNA aminoacylation
>>     GO:0006418 : tRNA aminoacylation for protein translation
>> Component: ??
>>     ribosome
>>     peptidyl transferase

Tanya Berardini, Ph.D.            tberardi at
The Arabidopsis Information Resource    FAX: (650) 325-6857
Carnegie Institution of Washington    Tel: (650) 325-1521 ext. 325
Department of Plant Biology        URL:
260 Panama St.
Stanford, CA 94305

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