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Protein

Alpha-glucosidase

Gene
N/A
Organism
Hordeum vulgare (Barley)
Status
Reviewed-Annotation score: -Experimental evidence at transcript leveli

Functioni

Catalytic activityi

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

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Active sitei437By similarity1
Active sitei440By similarity1
Active sitei534Proton donorBy similarity1

GO - Molecular functioni

Keywordsi

Molecular functionGlycosidase, Hydrolase

Enzyme and pathway databases

BRENDAi3.2.1.20 2687

Protein family/group databases

CAZyiGH31 Glycoside Hydrolase Family 31

Names & Taxonomyi

Protein namesi
Recommended name:
Alpha-glucosidase (EC:3.2.1.20)
Alternative name(s):
Maltase
OrganismiHordeum vulgare (Barley)
Taxonomic identifieri4513 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaPoalesPoaceaeBOP cladePooideaeTriticodaeTriticeaeHordeinaeHordeum

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 23Sequence analysisAdd BLAST23
ChainiPRO_000001858324 – 877Alpha-glucosidaseAdd BLAST854

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
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

PRIDEiQ43763

Expressioni

Tissue specificityi

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

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.

Inductioni

By gibberellin A3 (GA).

Gene expression databases

ExpressionAtlasiQ43763 baseline and differential

Structurei

3D structure databases

ProteinModelPortaliQ43763
SMRiQ43763
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the glycosyl hydrolase 31 family.Curated

Keywords - Domaini

Signal

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, 2 hits
SSF74650 SSF74650, 1 hit
PROSITEiView protein in PROSITE
PS00129 GLYCOSYL_HYDROL_F31_1, 1 hit
PS00707 GLYCOSYL_HYDROL_F31_2, 1 hit

Sequencei

Sequence statusi: Complete.

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
Checksum:iE3B5C16E4588C492
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U22450 mRNA Translation: AAB02985.1
PIRiS65057
UniGeneiHv.20758

Similar proteinsi

Entry informationi

Entry nameiAGLU_HORVU
AccessioniPrimary (citable) accession number: Q43763
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 15, 1998
Last sequence update: November 1, 1996
Last modified: May 23, 2018
This is version 76 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Documents

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

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