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

Last Reviewed on: 2011-05-17    Molecular Function | Biological Process | Cellular Component

Manually curated Molecular Function
Annotation(s)	Evidence	Reference(s)	Assigned By
ribosome binding	IDA: Inferred from Direct Assay Assigned on 2010-11-19	Bengtson MH and Joazeiro CA  (2010) Role of a ribosome-associated E3 ubiquitin ligase in protein quality control. Nature 467(7314):470-3	SGD
ubiquitin-protein ligase activity	IDA: Inferred from Direct Assay Assigned on 2007-02-12	Braun MA, et al.  (2007) Identification of Rkr1, a nuclear RING domain protein with functional connections to chromatin modification in Saccharomyces cerevisiae. Mol Cell Biol 27(8):2800-11	SGD

Manually curated Biological Process
Annotation(s)	Evidence	Reference(s)	Assigned By
chromatin modification	IGI: Inferred from Genetic Interaction with SGD:RAD6, SGD:RTF1, SGD:SPT10, SGD:BRE1 Assigned on 2007-02-12	Braun MA, et al.  (2007) Identification of Rkr1, a nuclear RING domain protein with functional connections to chromatin modification in Saccharomyces cerevisiae. Mol Cell Biol 27(8):2800-11	SGD
chromatin silencing at telomere	IMP: Inferred from Mutant Phenotype Assigned on 2007-02-12	Braun MA, et al.  (2007) Identification of Rkr1, a nuclear RING domain protein with functional connections to chromatin modification in Saccharomyces cerevisiae. Mol Cell Biol 27(8):2800-11	SGD
protein ubiquitination	IMP: Inferred from Mutant Phenotype Assigned on 2010-11-19	Bengtson MH and Joazeiro CA  (2010) Role of a ribosome-associated E3 ubiquitin ligase in protein quality control. Nature 467(7314):470-3	SGD
	IDA: Inferred from Direct Assay Assigned on 2007-02-12	Braun MA, et al.  (2007) Identification of Rkr1, a nuclear RING domain protein with functional connections to chromatin modification in Saccharomyces cerevisiae. Mol Cell Biol 27(8):2800-11	SGD
ubiquitin-dependent protein catabolic process	IMP: Inferred from Mutant Phenotype Assigned on 2010-11-19	Bengtson MH and Joazeiro CA  (2010) Role of a ribosome-associated E3 ubiquitin ligase in protein quality control. Nature 467(7314):470-3	SGD

Manually curated Cellular Component
Annotation(s)	Evidence	Reference(s)	Assigned By
nucleus	IDA: Inferred from Direct Assay Assigned on 2007-02-12	Braun MA, et al.  (2007) Identification of Rkr1, a nuclear RING domain protein with functional connections to chromatin modification in Saccharomyces cerevisiae. Mol Cell Biol 27(8):2800-11	SGD
colocalizes_with ribosome	IDA: Inferred from Direct Assay Assigned on 2010-11-19	Bengtson MH and Joazeiro CA  (2010) Role of a ribosome-associated E3 ubiquitin ligase in protein quality control. Nature 467(7314):470-3	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
colocalizes_with ribosome	IDA: Inferred from Direct Assay Assigned on 2007-01-22	Fleischer TC, et al.  (2006) Systematic identification and functional screens of uncharacterized proteins associated with eukaryotic ribosomal complexes. Genes Dev 20(10):1294-307	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
ligase activity	IEA: Inferred from Electronic Annotation with EBI:KW-0436 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB
metal ion binding	IEA: Inferred from Electronic Annotation with EBI:KW-0479 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB
zinc ion binding	IEA: Inferred from Electronic Annotation with EBI:IPR001841 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
protein ubiquitination	IEA: Inferred from Electronic Annotation with UniPathway:UPA00143 Last updated 2013-03-02	UniProt-GOA  (2012) Gene Ontology annotation based on UniPathway vocabulary mapping.	UniPathway

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

*** 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)).