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Protein

Myrosinase MB2

Gene
N/A
Organism
Sinapis alba (White mustard) (Brassica hirta)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

Degradation of glucosinolates (glucose residue linked by a thioglucoside bound to an amino acid derivative) to glucose, sulfate and any of the products: thiocyanates, isothiocyanates, nitriles, epithionitriles or oxazolidine-2-thiones.

Catalytic activityi

A thioglucoside + H2O = a sugar + a thiol.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Binding sitei51 – 511SubstrateBy similarity
Active sitei125 – 1251NucleophilePROSITE-ProRule annotation
Binding sitei173 – 1731SubstrateBy similarity

GO - Molecular functioni

  1. thioglucosidase activity Source: UniProtKB-EC

GO - Biological processi

  1. carbohydrate metabolic process Source: InterPro
Complete GO annotation...

Keywords - Molecular functioni

Glycosidase, Hydrolase

Protein family/group databases

CAZyiGH1. Glycoside Hydrolase Family 1.

Names & Taxonomyi

Protein namesi
Recommended name:
Myrosinase MB2 (EC:3.2.1.147)
Alternative name(s):
Sinigrinase
Thioglucosidase
OrganismiSinapis alba (White mustard) (Brassica hirta)
Taxonomic identifieri3728 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeBrassiceaeSinapis

Subcellular locationi

GO - Cellular componenti

  1. vacuole Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Vacuole

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini‹1 – 243›243Myrosinase MB2PRO_0000063903Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Glycosylationi30 – 301N-linked (GlcNAc...)Sequence Analysis
Glycosylationi216 – 2161N-linked (GlcNAc...)Sequence Analysis

Keywords - PTMi

Glycoprotein

Expressioni

Tissue specificityi

In vacuoles called myrosin grains of a certain class of cells, myrosin cells, distributed in the cotyledons and the axis of the embryo as well as in different organs of the growing plant.

Interactioni

Subunit structurei

Homodimer.

Structurei

3D structure databases

ProteinModelPortaliP29738.
SMRiP29738. Positions 1-216.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni180 – 1812Substrate bindingBy similarity

Sequence similaritiesi

Belongs to the glycosyl hydrolase 1 family.Curated

Family and domain databases

Gene3Di3.20.20.80. 1 hit.
InterProiIPR001360. Glyco_hydro_1.
IPR018120. Glyco_hydro_1_AS.
IPR013781. Glyco_hydro_catalytic_dom.
IPR017853. Glycoside_hydrolase_SF.
[Graphical view]
PANTHERiPTHR10353. PTHR10353. 1 hit.
PfamiPF00232. Glyco_hydro_1. 1 hit.
[Graphical view]
PRINTSiPR00131. GLHYDRLASE1.
SUPFAMiSSF51445. SSF51445. 1 hit.
PROSITEiPS00572. GLYCOSYL_HYDROL_F1_1. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Fragment.

P29738-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
EFFHGWYMEP LTKGRYPDIM RQIVGTRLPN FTEDEAELVA GSYDFLGLNY
60 70 80 90 100
YVTQYAKPKP NPYPSEKHTA MDDAGVDLTF KNSRGEYPGP VFAEDANSYY
110 120 130 140 150
YPKGIYYVMD YFKTKYGNPL IYITENGIST PGSESRCERI ADYKRINYHC
160 170 180 190 200
SHLCFLSKVI KEKGVNVRGY FAWALGDNYE FGKGFTVRFG LSYVNWDDLN
210 220 230 240
DRNLKESGKW YQRFINGTAK NPVKQNFLRS SLSSQNQKKR LAC
Length:243
Mass (Da):28,184
Last modified:April 1, 1993 - v1
Checksum:iF79CE00FD7FDB4D7
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Non-terminal residuei1 – 11

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X59880 mRNA. Translation: CAA42535.1.
PIRiS19148.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X59880 mRNA. Translation: CAA42535.1.
PIRiS19148.

3D structure databases

ProteinModelPortaliP29738.
SMRiP29738. Positions 1-216.
ModBaseiSearch...
MobiDBiSearch...

Protein family/group databases

CAZyiGH1. Glycoside Hydrolase Family 1.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Family and domain databases

Gene3Di3.20.20.80. 1 hit.
InterProiIPR001360. Glyco_hydro_1.
IPR018120. Glyco_hydro_1_AS.
IPR013781. Glyco_hydro_catalytic_dom.
IPR017853. Glycoside_hydrolase_SF.
[Graphical view]
PANTHERiPTHR10353. PTHR10353. 1 hit.
PfamiPF00232. Glyco_hydro_1. 1 hit.
[Graphical view]
PRINTSiPR00131. GLHYDRLASE1.
SUPFAMiSSF51445. SSF51445. 1 hit.
PROSITEiPS00572. GLYCOSYL_HYDROL_F1_1. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "The glucosinolate-degrading enzyme myrosinase in Brassicaceae is encoded by a gene family."
    Xue J., Lenman M., Falk A., Rask L.
    Plant Mol. Biol. 18:387-398(1992) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA], PARTIAL PROTEIN SEQUENCE.
    Strain: cv. Maxi.
    Tissue: Seed.

Entry informationi

Entry nameiMYR2_SINAL
AccessioniPrimary (citable) accession number: P29738
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 1, 1993
Last sequence update: April 1, 1993
Last modified: January 7, 2015
This is version 76 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Direct protein sequencing

Documents

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

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.