This page displays GO annotations in different sections according to the annotation method used to add that annotation to SGD.

Last Reviewed on: 2002-10-09    Molecular Function | Biological Process | Cellular Component

Manually curated Molecular Function
Annotation(s)	Evidence	Reference(s)	Assigned By
tRNA (cytosine-5-)-methyltransferase activity	IDA: Inferred from Direct Assay Assigned on 2002-10-09	Motorin Y and Grosjean H  (1999) Multisite-specific tRNA:m5C-methyltransferase (Trm4) in yeast Saccharomyces cerevisiae: identification of the gene and substrate specificity of the enzyme. RNA 5(8):1105-18	SGD

Manually curated Biological Process
Annotation(s)	Evidence	Reference(s)	Assigned By
tRNA methylation	IDA: Inferred from Direct Assay Assigned on 2002-10-09	Motorin Y and Grosjean H  (1999) Multisite-specific tRNA:m5C-methyltransferase (Trm4) in yeast Saccharomyces cerevisiae: identification of the gene and substrate specificity of the enzyme. RNA 5(8):1105-18	SGD

Manually curated Cellular Component
Annotation(s)	Evidence	Reference(s)	Assigned By
nucleus	IDA: Inferred from Direct Assay Assigned on 2002-10-09	Wu P, et al.  (1998) NCL1, a novel gene for a non-essential nuclear protein in Saccharomyces cerevisiae. Gene 220(1-2):109-17	SGD

* Manually curated GO annotations reflect our best understanding of the basic molecular function, biological process, and cellular component for this gene product. Manually curated annotations are assigned by SGD curators based on published papers when available, or by curatorial statements if necessary. Curators periodically review all Manually curated GO annotations for accuracy and completeness. The "Last Reviewed on:" date at the top of this section indicates when these annotations were last reviewed.

There are no High-throughput annotations for NCL1

** GO annotations from High-throughput experiments are made based on a variety of large scale high-throughput experiments, including genome-wide experiments. Many of these annotations are made based on GO annotations (or mappings to GO annotations) assigned by the authors, rather than SGD curators. While SGD curators read these publications and often work closely with authors to incorporate the information, each individual annotation may not necessarily be reviewed by a curator. GO Annotations from high-throughput experiments will be assigned only when this type of data is available, and thus may not be assigned in all three aspects of the Gene Ontologies.

Molecular Function | Biological Process | Cellular Component

Computational Molecular Function
Annotation(s)	Evidence	Reference(s)	Assigned By
methyltransferase activity	IEA: Inferred from Electronic Annotation with EBI:IPR018314 Last updated 2013-03-02	DDB, et al.  (2001) Gene Ontology annotation through association of InterPro records with GO terms.	InterPro
	IEA: Inferred from Electronic Annotation with EBI:KW-0489 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB
RNA binding	IEA: Inferred from Electronic Annotation with EBI:IPR018314 Last updated 2013-03-02	DDB, et al.  (2001) Gene Ontology annotation through association of InterPro records with GO terms.	InterPro
	IEA: Inferred from Electronic Annotation with EBI:KW-0694 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB
transferase activity	IEA: Inferred from Electronic Annotation with EBI:KW-0808 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB
tRNA (cytosine-5-)-methyltransferase activity	IEA: Inferred from Electronic Annotation with EBI:IPR023270 Last updated 2013-03-02	DDB, et al.  (2001) Gene Ontology annotation through association of InterPro records with GO terms.	InterPro
tRNA binding	IEA: Inferred from Electronic Annotation with EBI:KW-0820 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB

Computational Biological Process
Annotation(s)	Evidence	Reference(s)	Assigned By
methylation	IEA: Inferred from Electronic Annotation with EBI:KW-0489 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB
tRNA processing	IEA: Inferred from Electronic Annotation with EBI:KW-0819 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB

Computational Cellular Component
Annotation(s)	Evidence	Reference(s)	Assigned By
nucleolus	IEA: Inferred from Electronic Annotation with EBI:SL-0188 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on the manual assignment of UniProtKB Subcellular Location terms in UniProtKB/Swiss-Prot entries.	UniProtKB
nucleus	IEA: Inferred from Electronic Annotation with EBI:KW-0539 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB

*** Computational GO Annotations are predictions. These annotations are NOT reviewed by a curator. Currently, all computational GO annotations for S. cerevisiae are assigned by an external source (for example, the Gene Ontology Annotation (GOA) project of the European Bioinformatics Institute (EBI)).