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

Last Reviewed on: 2009-10-20    Molecular Function | Biological Process | Cellular Component

Manually curated Molecular Function
Annotation(s)	Evidence	Reference(s)	Assigned By
molecular_function unknown	ND: No Biological Data Available Assigned on 2009-10-20	SGD  (2002) Use of the ND evidence code for Gene Ontology (GO) terms in SGD ()	SGD

Manually curated Biological Process
Annotation(s)	Evidence	Reference(s)	Assigned By
mRNA splicing, via spliceosome	IMP: Inferred from Mutant Phenotype Assigned on 2009-10-15	Caspary F and Seraphin B  (1998) The yeast U2A'/U2B complex is required for pre-spliceosome formation. EMBO J 17(21):6348-58	SGD

Manually curated Cellular Component
Annotation(s)	Evidence	Reference(s)	Assigned By
U2 snRNP	IDA: Inferred from Direct Assay Assigned on 2009-10-15 IPI: Inferred from Physical Interaction with SGD:MSL1 Assigned on 2009-10-15	Caspary F and Seraphin B  (1998) The yeast U2A'/U2B complex is required for pre-spliceosome formation. EMBO J 17(21):6348-58	SGD
U2-type prespliceosome	IDA: Inferred from Direct Assay Assigned on 2009-10-21	Tardiff DF and Rosbash M  (2006) Arrested yeast splicing complexes indicate stepwise snRNP recruitment during in vivo spliceosome assembly. RNA 12(6):968-79	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.

Cellular Component

High-throughput Cellular Component
Annotation(s)	Evidence	Reference(s)	Assigned By
cytoplasm	IDA: Inferred from Direct Assay Assigned on 2002-05-07	Kumar A, et al.  (2002) Subcellular localization of the yeast proteome. Genes Dev 16(6):707-19	SGD

** 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.

Biological Process | Cellular Component

Computational Biological Process
Annotation(s)	Evidence	Reference(s)	Assigned By
mRNA processing	IEA: Inferred from Electronic Annotation with EBI:KW-0507 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 splicing	IEA: Inferred from Electronic Annotation with EBI:KW-0508 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
nucleus	IEA: Inferred from Electronic Annotation with EBI:SL-0191 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
	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
spliceosomal complex	IEA: Inferred from Electronic Annotation with EBI:KW-0747 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)).