[Go] Alert: proposal to obsolete GO:0016227 that impacts existing annotations

[Midori Harris]

Dear GO,

The proposal has been made to obsolete

   tRNA sulfurtransferase activity ; GO:000016227

Annotations to GO:0016227 exist as listed below:

   	DB		total
 	GeneDB_Spombe	1 ISS
 	CGD		1 IEA
 	goa_chicken	1 ISS
 	goa_cow		1 ISS
 	SGD		1 IMP

The reason for obsoleting this term is that tRNA thionucleotide formation 
is a multistep process; there is no single reaction in which cysteine 
reacts with an activated tRNA directly.

This term is not in any GO slims or subsets maintained in the 
gene_ontology_write.obo file. It is used in the following external 
mappings:

ec2go:EC:2.8.1.4 > GO:tRNA sulfurtransferase activity ; GO:0016227
metacyc2go:MetaCyc:TRNA-SULFURTRANSFERASE-RXN > GO:tRNA sulfurtransferase activity ; GO:0016227

Two terms will be suggested for transferring annotations:
 	sulfurtransferase activity ; GO:0016783
 	tRNA thio-modification ; GO:0034227

SourceForge link:
https://sourceforge.net/tracker/?func=detail&atid=440764&aid=1940032&group_id=36855

Comment period ends on May 21, 2009.

*** Unless objections are received by May 21,
       we will assume that you agree to this change. ***

Thanks,
Midori