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

Last Reviewed on: 2013-05-03    Molecular Function | Biological Process | Cellular Component

Manually curated Molecular Function
Annotation(s)	Evidence	Reference(s)	Assigned By
cytidine transmembrane transporter activity	IMP: Inferred from Mutant Phenotype Assigned on 2005-11-15 IDA: Inferred from Direct Assay Assigned on 2005-11-15	Kurtz JE, et al.  (1999) New insights into the pyrimidine salvage pathway of Saccharomyces cerevisiae: requirement of six genes for cytidine metabolism. Curr Genet 36(3):130-6	SGD
nucleobase transmembrane transporter activity	IDA: Inferred from Direct Assay Assigned on 2002-09-19	Ferreira T, et al.  (1997) Functional analysis of mutated purine-cytosine permease from Saccharomyces cerevisiae. A possible role of the hydrophilic segment 371-377 in the active carrier conformation. J Biol Chem 272(15):9697-702	SGD

Manually curated Biological Process
Annotation(s)	Evidence	Reference(s)	Assigned By
cytidine transport	IMP: Inferred from Mutant Phenotype Assigned on 2005-11-15 IDA: Inferred from Direct Assay Assigned on 2005-11-15	Kurtz JE, et al.  (1999) New insights into the pyrimidine salvage pathway of Saccharomyces cerevisiae: requirement of six genes for cytidine metabolism. Curr Genet 36(3):130-6	SGD
cytosine transport	IDA: Inferred from Direct Assay Assigned on 2002-09-19	Ferreira T, et al.  (1997) Functional analysis of mutated purine-cytosine permease from Saccharomyces cerevisiae. A possible role of the hydrophilic segment 371-377 in the active carrier conformation. J Biol Chem 272(15):9697-702	SGD
purine-containing compound transmembrane transport	IDA: Inferred from Direct Assay Assigned on 2013-05-03	Ferreira T, et al.  (1997) Functional analysis of mutated purine-cytosine permease from Saccharomyces cerevisiae. A possible role of the hydrophilic segment 371-377 in the active carrier conformation. J Biol Chem 272(15):9697-702	SGD

Manually curated Cellular Component
Annotation(s)	Evidence	Reference(s)	Assigned By
plasma membrane	IDA: Inferred from Direct Assay Assigned on 2002-09-19	Grandier-Vazeille X, et al.  (1993) Detection of purine cytosine permease of S. cerevisiae: use of antibodies against a synthetic peptide corresponding to a predicted sequence in the N-terminal domain of the protein. Biochem Biophys Res Commun 197(2):372-9	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
fungal-type vacuole membrane	IDA: Inferred from Direct Assay Assigned on 2012-12-12	Tkach JM, et al.  (2012) Dissecting DNA damage response pathways by analysing protein localization and abundance changes during DNA replication stress. Nat Cell Biol 14(9):966-76	SGD
integral to membrane	ISM: Inferred from Sequence Model Assigned on 2011-05-31	De Hertogh B, et al.  (2002) Phylogenetic classification of transporters and other membrane proteins from Saccharomyces cerevisiae. Funct Integr Genomics 2(4-5):154-70	SGD
plasma membrane	IDA: Inferred from Direct Assay Assigned on 2012-12-12	Tkach JM, et al.  (2012) Dissecting DNA damage response pathways by analysing protein localization and abundance changes during DNA replication stress. Nat Cell Biol 14(9):966-76	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.

Molecular Function | Biological Process | Cellular Component

Computational Molecular Function
Annotation(s)	Evidence	Reference(s)	Assigned By
nucleobase transmembrane transporter activity	IEA: Inferred from Electronic Annotation with EBI:IPR001248 Last updated 2013-03-02	DDB, et al.  (2001) Gene Ontology annotation through association of InterPro records with GO terms.	InterPro
transporter activity	IEA: Inferred from Electronic Annotation with EBI:IPR012681 Last updated 2013-03-02	DDB, et al.  (2001) Gene Ontology annotation through association of InterPro records with GO terms.	InterPro

Computational Biological Process
Annotation(s)	Evidence	Reference(s)	Assigned By
nucleobase transport	IEA: Inferred from Electronic Annotation with EBI:IPR001248 Last updated 2013-03-02	DDB, et al.  (2001) Gene Ontology annotation through association of InterPro records with GO terms.	InterPro
transport	IEA: Inferred from Electronic Annotation with EBI:IPR012681 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-0813 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
integral to membrane	IEA: Inferred from Electronic Annotation with EBI:KW-0812 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB
membrane	IEA: Inferred from Electronic Annotation with EBI:IPR012681, EBI:IPR001248 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:SL-0162 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-0472 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)).