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Entry version 82 (18 Sep 2019)
Sequence version 1 (01 Nov 1996)
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Protein

Alpha-glucosidase

Gene
N/A
Organism
Hordeum vulgare (Barley)
Status
Reviewed-Annotation score:

Annotation score:3 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at transcript leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

  • Hydrolysis of terminal, non-reducing (1->4)-linked alpha-D-glucose residues with release of alpha-D-glucose. EC:3.2.1.20

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei437By similarity1
Active sitei440By similarity1
Active sitei534Proton donorBy similarity1

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionGlycosidase, Hydrolase

Enzyme and pathway databases

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
3.2.1.20 2687

Protein family/group databases

Carbohydrate-Active enZymes

More...
CAZyi
GH31 Glycoside Hydrolase Family 31

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Alpha-glucosidase (EC:3.2.1.20)
Alternative name(s):
Maltase
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiHordeum vulgare (Barley)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri4513 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliopsidaLiliopsidaPoalesPoaceaeBOP cladePooideaeTriticodaeTriticeaeHordeinaeHordeum

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section denotes the presence of an N-terminal signal peptide.<p><a href='/help/signal' target='_top'>More...</a></p>Signal peptidei1 – 23Sequence analysisAdd BLAST23
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_000001858324 – 877Alpha-glucosidaseAdd BLAST854

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section specifies the position and type of each covalently attached glycan group (mono-, di-, or polysaccharide).<p><a href='/help/carbohyd' target='_top'>More...</a></p>Glycosylationi191N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi298N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi338N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi391N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi471N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi570N-linked (GlcNAc...) asparagineSequence analysis1

Keywords - PTMi

Glycoprotein

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q43763

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the ‘Expression’ section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified ‘at protein level’. <br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

High levels seen in the aleurone and scutellum after germination, while low levels are found in developing seeds.

<p>This subsection of the ‘Expression’ section provides information on the expression of the gene product at various stages of a cell, tissue or organism development. By default, the information is derived from experiments at the mRNA level, unless specified ‘at the protein level’.<p><a href='/help/developmental_stage' target='_top'>More...</a></p>Developmental stagei

Levels increase steadily throughout imbibition reaching maximum levels at day 7. During germination, levels increase from day 2, reach maximum levels at day 3 and decline after day 5.

<p>This subsection of the ‘Expression’ section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

By gibberellin A3 (GA).

Gene expression databases

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
Q43763 baseline and differential

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

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SMRi
Q43763

Database of comparative protein structure models

More...
ModBasei
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

<p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the glycosyl hydrolase 31 family.Curated

Keywords - Domaini

Signal

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.60.40.1180, 2 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR031727 Gal_mutarotase_N
IPR011013 Gal_mutarotase_sf_dom
IPR000322 Glyco_hydro_31
IPR030458 Glyco_hydro_31_AS
IPR030459 Glyco_hydro_31_CS
IPR025887 Glyco_hydro_31_N_dom
IPR013780 Glyco_hydro_b
IPR017853 Glycoside_hydrolase_SF

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF13802 Gal_mutarotas_2, 1 hit
PF01055 Glyco_hydro_31, 1 hit
PF16863 NtCtMGAM_N, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF51445 SSF51445, 1 hit
SSF74650 SSF74650, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00129 GLYCOSYL_HYDROL_F31_1, 1 hit
PS00707 GLYCOSYL_HYDROL_F31_2, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

Q43763-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MATVGVLLLC LCLCLFAPRL CSSKEEGPLA ARTVLAVAVT MEGALRAEAA
60 70 80 90 100
TGGRSSTGDV QRLAVYASLE TDSRLRVRIT DADHPRWEVP QDIIPRPAPG
110 120 130 140 150
DVLHDAPPAS SAPLQGRVLS PAGSDLVLTV HASPFRFTVS RRSTGDTLFD
160 170 180 190 200
TAPGLVFRDK YLEVTSALPA GRASLYGLGE HTKSSFRLRH NDSFTLWNAD
210 220 230 240 250
IGASYVDVNL YGSHPFYMDV RAPGTAHGVL LLSSNGMDVL YGGSYVTYKV
260 270 280 290 300
IGGVLDFYFF AGPNPLAVVD QYTQLIARPA PMPYWSFGFH QCRYGYLNVS
310 320 330 340 350
DLERVVARYA KARIPLEVMW TDIDYMDGFK DFTLDRVNFT AAELRPFVDR
360 370 380 390 400
LHRNAQKYVL ILDPGIRVDP IDATYGTFVR GMQQDIFLKR NGTNFVGNVW
410 420 430 440 450
PGDVYFPDFM HPAAAEFWAR EISLFRRTIP VDGLWIDMNE ISNFYNPEPM
460 470 480 490 500
NALDDPPYRI NNDGTGRPIN NKTVRPLAVH YGGVTEYEEH NLFGLLEARA
510 520 530 540 550
TGRGVLRDTG RRPFVLSRST FVGSGRYTAY WTGDNAATWG DLRYSINTML
560 570 580 590 600
SFGLFGMPMI GADICGFNGN TTEELCGRWI QLGAFYPFSR DHSAIFTVRR
610 620 630 640 650
ELYLWPSVAA SGRKALGLRY QLLPYFYTLM YEAHMTGAPI ARPLFFSYPH
660 670 680 690 700
DVATYGVDRQ FLLGRGVLVS PVLEPGPTTV DAYFPAGRWY RLYDYSLAVA
710 720 730 740 750
TRTGKHVRLP APADTVNVHL TGGTILPLQQ SALTTSRARR TAFHLLVALA
760 770 780 790 800
EDGTASGYLF LDDGDSPEYG RRSDWSMVRF NYKIPNNKGA IKVKSEVVHN
810 820 830 840 850
SYAQSRTLVI SKVVLMGHRS PAAPKKLTVH VNSAEVEASS SAGTRYQNAG
860 870
GLGGVAHIGG LSLVVGEEFE LKVAMSY
Length:877
Mass (Da):96,933
Last modified:November 1, 1996 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iE3B5C16E4588C492
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
U22450 mRNA Translation: AAB02985.1

Protein sequence database of the Protein Information Resource

More...
PIRi
S65057

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U22450 mRNA Translation: AAB02985.1
PIRiS65057

3D structure databases

SMRiQ43763
ModBaseiSearch...

Protein family/group databases

CAZyiGH31 Glycoside Hydrolase Family 31

Proteomic databases

PRIDEiQ43763

Enzyme and pathway databases

BRENDAi3.2.1.20 2687

Gene expression databases

ExpressionAtlasiQ43763 baseline and differential

Family and domain databases

Gene3Di2.60.40.1180, 2 hits
InterProiView protein in InterPro
IPR031727 Gal_mutarotase_N
IPR011013 Gal_mutarotase_sf_dom
IPR000322 Glyco_hydro_31
IPR030458 Glyco_hydro_31_AS
IPR030459 Glyco_hydro_31_CS
IPR025887 Glyco_hydro_31_N_dom
IPR013780 Glyco_hydro_b
IPR017853 Glycoside_hydrolase_SF
PfamiView protein in Pfam
PF13802 Gal_mutarotas_2, 1 hit
PF01055 Glyco_hydro_31, 1 hit
PF16863 NtCtMGAM_N, 1 hit
SUPFAMiSSF51445 SSF51445, 1 hit
SSF74650 SSF74650, 1 hit
PROSITEiView protein in PROSITE
PS00129 GLYCOSYL_HYDROL_F31_1, 1 hit
PS00707 GLYCOSYL_HYDROL_F31_2, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiAGLU_HORVU
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: Q43763
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 15, 1998
Last sequence update: November 1, 1996
Last modified: September 18, 2019
This is version 82 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Glycosyl hydrolases
    Classification of glycosyl hydrolase families and list of entries
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