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

Last Reviewed on: 2003-02-04    Molecular Function | Biological Process | Cellular Component

Manually curated Molecular Function
Annotation(s)	Evidence	Reference(s)	Assigned By
beta-1,4-mannosyltransferase activity	IDA: Inferred from Direct Assay Assigned on 2002-09-02	Couto JR, et al.  (1984) Cloning and expression in Escherichia coli of a yeast mannosyltransferase from the asparagine-linked glycosylation pathway. J Biol Chem 259(1):378-82	SGD

Manually curated Biological Process
Annotation(s)	Evidence	Reference(s)	Assigned By
oligosaccharide-lipid intermediate biosynthetic process	IMP: Inferred from Mutant Phenotype Assigned on 2005-03-01	Huffaker TC and Robbins PW  (1982) Temperature-sensitive yeast mutants deficient in asparagine-linked glycosylation. J Biol Chem 257(6):3203-10	SGD
protein N-linked glycosylation	IMP: Inferred from Mutant Phenotype Assigned on 2002-09-02	Huffaker TC and Robbins PW  (1983) Yeast mutants deficient in protein glycosylation. Proc Natl Acad Sci U S A 80(24):7466-70	SGD

Manually curated Cellular Component
Annotation(s)	Evidence	Reference(s)	Assigned By
endoplasmic reticulum	IPI: Inferred from Physical Interaction with SGD:ALG11 Assigned on 2005-03-01	Gao XD, et al.  (2004) Physical interactions between the Alg1, Alg2, and Alg11 mannosyltransferases of the endoplasmic reticulum. Glycobiology 14(6):559-70	SGD
integral to membrane	ISS: Inferred from Sequence or structural Similarity Assigned on 2003-02-04	Albright CF and Robbins RW  (1990) The sequence and transcript heterogeneity of the yeast gene ALG1, an essential mannosyltransferase involved in N-glycosylation. J Biol Chem 265(12):7042-9	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.

There are no High-throughput annotations for ALG1

** 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
chitobiosyldiphosphodolichol beta-mannosyltransferase activity	IEA: Inferred from Electronic Annotation with IUBMB:2.4.1.142 Last updated 2013-03-02	GOA curators and MGI curators  (2001) Gene Ontology annotation based on Enzyme Commission mapping.	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
transferase activity, transferring glycosyl groups	IEA: Inferred from Electronic Annotation with EBI:IPR026051 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-0328 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
biosynthetic process	IEA: Inferred from Electronic Annotation with EBI:IPR001296 Last updated 2013-03-02	DDB, et al.  (2001) Gene Ontology annotation through association of InterPro records with GO terms.	InterPro
protein glycosylation	IEA: Inferred from Electronic Annotation with UniPathway:UPA00378 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
endoplasmic reticulum	IEA: Inferred from Electronic Annotation with EBI:KW-0256 Last updated 2013-03-02	UniProt-GOA  (2011) Gene Ontology annotation based on manual assignment of UniProtKB keywords in UniProtKB/Swiss-Prot entries.	UniProtKB
endoplasmic reticulum membrane	IEA: Inferred from Electronic Annotation with EBI:SL-0097 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
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: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)).