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

Last Reviewed on: 2002-07-11    Molecular Function | Biological Process | Cellular Component

Manually curated Molecular Function
Annotation(s)	Evidence	Reference(s)	Assigned By
contributes_to mannosyltransferase activity	IMP: Inferred from Mutant Phenotype Assigned on 2005-02-10	Ashida H, et al.  (2005) Mammalian PIG-X and yeast Pbn1p are the essential components of glycosylphosphatidylinositol-mannosyltransferase I. Mol Biol Cell 16(3):1439-48	SGD

Manually curated Biological Process
Annotation(s)	Evidence	Reference(s)	Assigned By
ER-associated protein catabolic process	IMP: Inferred from Mutant Phenotype Assigned on 2006-11-02	Subramanian S, et al.  (2006) Pbn1p: an essential endoplasmic reticulum membrane protein required for protein processing in the endoplasmic reticulum of budding yeast. Proc Natl Acad Sci U S A 103(4):939-44	SGD
GPI anchor biosynthetic process	IMP: Inferred from Mutant Phenotype Assigned on 2005-02-10	Ashida H, et al.  (2005) Mammalian PIG-X and yeast Pbn1p are the essential components of glycosylphosphatidylinositol-mannosyltransferase I. Mol Biol Cell 16(3):1439-48	SGD
protein processing	IMP: Inferred from Mutant Phenotype Assigned on 2002-07-11	Naik RR and Jones EW  (1998) The PBN1 gene of Saccharomyces cerevisiae: an essential gene that is required for the post-translational processing of the protease B precursor. Genetics 149(3):1277-92	SGD

Manually curated Cellular Component
Annotation(s)	Evidence	Reference(s)	Assigned By
endoplasmic reticulum	IDA: Inferred from Direct Assay Assigned on 2002-07-11	Naik RR and Jones EW  (1998) The PBN1 gene of Saccharomyces cerevisiae: an essential gene that is required for the post-translational processing of the protease B precursor. Genetics 149(3):1277-92	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 PBN1

** 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
GPI anchor biosynthetic process	IEA: Inferred from Electronic Annotation with EBI:IPR013233 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 UniPathway:UPA00196 Last updated 2013-03-02	UniProt-GOA  (2012) Gene Ontology annotation based on UniPathway vocabulary mapping.	UniPathway
	IEA: Inferred from Electronic Annotation with EBI:KW-0337 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
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:IPR013233 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-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)).