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

Last Reviewed on: 2005-01-03    Molecular Function | Biological Process | Cellular Component

Manually curated Molecular Function
Annotation(s)	Evidence	Reference(s)	Assigned By
ubiquitin binding	IMP: Inferred from Mutant Phenotype Assigned on 2011-03-15 IDA: Inferred from Direct Assay Assigned on 2011-03-15	Stoll KE, et al.  (2011) The Essential Ubc4/Ubc5 Function in Yeast Is HECT E3-dependent, and RING E3-dependent Pathways Require Only Monoubiquitin Transfer by Ubc4. J Biol Chem 286(17):15165-70	SGD
ubiquitin-protein ligase activity	IDA: Inferred from Direct Assay Assigned on 2005-01-03	Seufert W and Jentsch S  (1990) Ubiquitin-conjugating enzymes UBC4 and UBC5 mediate selective degradation of short-lived and abnormal proteins. EMBO J 9(2):543-50	SGD

Manually curated Biological Process
Annotation(s)	Evidence	Reference(s)	Assigned By
protein monoubiquitination	IDA: Inferred from Direct Assay Assigned on 2005-01-03	Parag HA, et al.  (1993) Selective ubiquitination of calmodulin by UBC4 and a putative ubiquitin protein ligase (E3) from Saccharomyces cerevisiae. FEBS Lett 325(3):242-6	SGD
protein polyubiquitination	IDA: Inferred from Direct Assay Assigned on 2005-01-03	Seufert W and Jentsch S  (1990) Ubiquitin-conjugating enzymes UBC4 and UBC5 mediate selective degradation of short-lived and abnormal proteins. EMBO J 9(2):543-50	SGD
protein ubiquitination	IDA: Inferred from Direct Assay Assigned on 2006-12-20	Panasenko O, et al.  (2006) The yeast Ccr4-Not complex controls ubiquitination of the nascent-associated polypeptide (NAC-EGD) complex. J Biol Chem 281(42):31389-98	SGD
response to stress	IDA: Inferred from Direct Assay Assigned on 2005-01-03	Seufert W and Jentsch S  (1990) Ubiquitin-conjugating enzymes UBC4 and UBC5 mediate selective degradation of short-lived and abnormal proteins. EMBO J 9(2):543-50	SGD
ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway	IMP: Inferred from Mutant Phenotype Assigned on 2005-04-21	Reggiori F and Pelham HR  (2002) A transmembrane ubiquitin ligase required to sort membrane proteins into multivesicular bodies. Nat Cell Biol 4(2):117-23	SGD

Manually curated Cellular Component
Annotation(s)	Evidence	Reference(s)	Assigned By
proteasome complex	IPI: Inferred from Physical Interaction Assigned on 2003-05-20	Tongaonkar P, et al.  (2000) Evidence for an interaction between ubiquitin-conjugating enzymes and the 26S proteasome. Mol Cell Biol 20(13):4691-8	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 UBC4

** 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

Computational Molecular Function
Annotation(s)	Evidence	Reference(s)	Assigned By
acid-amino acid ligase activity	IEA: Inferred from Electronic Annotation with EBI:IPR000608 Last updated 2013-03-02	DDB, et al.  (2001) Gene Ontology annotation through association of InterPro records with GO terms.	InterPro
ATP binding	IEA: Inferred from Electronic Annotation with EBI:KW-0067 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB
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
nucleotide binding	IEA: Inferred from Electronic Annotation with EBI:KW-0547 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB
ubiquitin-protein ligase activity	IEA: Inferred from Electronic Annotation with IUBMB:6.3.2.19 Last updated 2013-03-02	GOA curators and MGI curators  (2001) Gene Ontology annotation based on Enzyme Commission mapping.	UniProtKB

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
response to stress	IEA: Inferred from Electronic Annotation with EBI:KW-0346 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)).