Ontology: Molecular Function (GO:0005352)

Definition: Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: alpha-glucoside(out) + H+(out) = alpha-glucoside(in) + H+(in). Alpha-glucosides include trehalose, maltose, turanose, isomaltose, alpha-methylglucoside, maltotriose, palatinose, trehalose and melezitose.

Synonyms: general alpha-glucoside transporter activity; general alpha-glucoside:hydrogen symporter activity; general alpha-glucoside:proton symporter activity

View Ontology: (graph) | (text)

This table lists the methods used to annotate genes either directly to the term alpha-glucoside:hydrogen symporter activity (4 genes) or to its variants containing one or more qualifiers (0 genes). Note that some genes may have been annotated by more than one method so the numbers in the table below may not add up to the totals given here.

Annotation Method	GO Term	# Yeast Genes Annotated
Manually curated (download data)	alpha-glucoside:hydrogen symporter activity	4
High-throughput	none	none
Computational	none	none

Links to Additional Annotations:

• View annotations in multiple organisms using
• Search for S. cerevisiae genes annotated, by the Manually curated or High-throughput methods, to this term or to any terms that are descended from this term, i.e., child terms representing more specific biology than this term.

Annotation details for genes that have been directly annotated to the term alpha-glucoside:hydrogen symporter activity or its variants containing one or more qualifiers (NOT, contributes to, or colocalizes with).

alpha-glucoside:hydrogen symporter activity      4 genes directly annotated to this term
Locus	Evidence	Annotation Method	Reference	Assigned By
MAL11/YGR289C	IDA: Inferred from Direct Assay Assigned on 2003-04-29	manually curated	Stambuk BU and de Araujo PS  (2001) Kinetics of active alpha-glucoside transport in Saccharomyces cerevisiae. FEMS Yeast Res 1(1):73-8	SGD
MAL21	IDA: Inferred from Direct Assay Assigned on 2003-04-29	manually curated	Stambuk BU and de Araujo PS  (2001) Kinetics of active alpha-glucoside transport in Saccharomyces cerevisiae. FEMS Yeast Res 1(1):73-8	SGD
MAL31/YBR298C	ISS: Inferred from Sequence or structural Similarity with SGD:MAL11 Assigned on 2013-05-08	manually curated	Smit A, et al.  (2008) The Thr505 and Ser557 residues of the AGT1-encoded alpha-glucoside transporter are critical for maltotriose transport in Saccharomyces cerevisiae. J Appl Microbiol 104(4):1103-11	SGD
MAL41	ISS: Inferred from Sequence or structural Similarity with SGD:MAL11, SGD:MAL21, SGD:MAL61 Assigned on 2008-04-07	manually curated	Chow TH, et al.  (1989) Structure of the multigene family of MAL loci in Saccharomyces. Mol Gen Genet 217(1):60-9	SGD

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