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Protein

Probable xyloglucan endotransglucosylase/hydrolase protein 21

Gene

XTH21

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score: -Experimental evidence at transcript leveli

Functioni

Catalyzes xyloglucan endohydrolysis (XEH) and/or endotransglycosylation (XET). Cleaves and religates xyloglucan polymers, an essential constituent of the primary cell wall, and thereby participates in cell wall construction of growing tissues (By similarity).By similarity

Catalytic activityi

Breaks a beta-(1->4) bond in the backbone of a xyloglucan and transfers the xyloglucanyl segment on to O-4 of the non-reducing terminal glucose residue of an acceptor, which can be a xyloglucan or an oligosaccharide of xyloglucan.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Active sitei102NucleophilePROSITE-ProRule annotation1
Active sitei106Proton donorPROSITE-ProRule annotation1

GO - Molecular functioni

GO - Biological processi

  • cell wall biogenesis Source: InterPro
  • cell wall modification Source: TAIR
  • primary root development Source: TAIR
  • xyloglucan metabolic process Source: InterPro

Keywordsi

Molecular functionGlycosidase, Hydrolase, Transferase
Biological processCell wall biogenesis/degradation

Enzyme and pathway databases

BioCyciARA:AT2G18800-MONOMER
BRENDAi2.4.1.207 399

Protein family/group databases

CAZyiGH16 Glycoside Hydrolase Family 16

Names & Taxonomyi

Protein namesi
Recommended name:
Probable xyloglucan endotransglucosylase/hydrolase protein 21 (EC:2.4.1.207)
Short name:
At-XTH21
Short name:
XTH-21
Gene namesi
Name:XTH21
Synonyms:XTR17
Ordered Locus Names:At2g18800
ORF Names:MSF3.18
OrganismiArabidopsis thaliana (Mouse-ear cress)
Taxonomic identifieri3702 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
Proteomesi
  • UP000006548 Componenti: Chromosome 2

Organism-specific databases

AraportiAT2G18800
TAIRilocus:2053967 AT2G18800

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Chloroplast Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertion Graphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Apoplast, Cell wall, Secreted

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 25Sequence analysisAdd BLAST25
ChainiPRO_000001182126 – 305Probable xyloglucan endotransglucosylase/hydrolase protein 21Add BLAST280

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Glycosylationi46N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi110N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi146N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi206N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi231N-linked (GlcNAc...) asparagineSequence analysis1

Post-translational modificationi

Contains at least one intrachain disulfide bond essential for its enzymatic activity.By similarity

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PaxDbiQ9ZV40

Expressioni

Tissue specificityi

Predominantly expressed in green siliques.1 Publication

Inductioni

Down-regulated by auxin.1 Publication

Gene expression databases

ExpressionAtlasiQ9ZV40 baseline and differential
GenevisibleiQ9ZV40 AT

Interactioni

Protein-protein interaction databases

STRINGi3702.AT2G18800.1

Structurei

3D structure databases

ProteinModelPortaliQ9ZV40
SMRiQ9ZV40
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini26 – 216GH16PROSITE-ProRule annotationAdd BLAST191

Sequence similaritiesi

Keywords - Domaini

Signal

Phylogenomic databases

eggNOGiENOG410IHDJ Eukaryota
COG2273 LUCA
HOGENOMiHOG000236368
InParanoidiQ9ZV40
KOiK08235
OMAiASFMNYN
OrthoDBiEOG09360JBH
PhylomeDBiQ9ZV40

Family and domain databases

InterProiView protein in InterPro
IPR013320 ConA-like_dom_sf
IPR000757 GH16
IPR008263 GH16_AS
IPR010713 XET_C
IPR016455 XTH
PfamiView protein in Pfam
PF00722 Glyco_hydro_16, 1 hit
PF06955 XET_C, 1 hit
PIRSFiPIRSF005604 XET, 1 hit
SUPFAMiSSF49899 SSF49899, 1 hit
PROSITEiView protein in PROSITE
PS01034 GH16_1, 1 hit
PS51762 GH16_2, 1 hit

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q9ZV40-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MVSSTLLVMS ISLFLGLSIL LVVHGKDFNQ DIDITWGDGR GNILNNGTLL
60 70 80 90 100
NLGLDQSSGS GFQSKAEYLY GKVDMQIKLV PGNSAGTVTT FYLKSQGLTW
110 120 130 140 150
DEIDFEFLGN VSGDPYIVHT NVYTQGKGDR EQQFYLWFDP TAAFHNYSIL
160 170 180 190 200
WNPSHIVFYI DGKPIREFKN LEVLGVAYPK NQPMRMYGSL WNADDWATRG
210 220 230 240 250
GLVKTNWSQG PFVASFMNYN SENACVWSIV NGTTTTSPCS PGDSTSSSSS
260 270 280 290 300
STSEWFSQRG MDSSSKKVLR WVQRKFMVYN YCKDKKRFSN GLPVECTAKN

KNTKS
Length:305
Mass (Da):34,145
Last modified:May 1, 1999 - v1
Checksum:i9B4BD59F25FA6DC7
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AC005724 Genomic DNA Translation: AAD08949.1
CP002685 Genomic DNA Translation: AEC06809.1
PIRiG84568
RefSeqiNP_179470.1, NM_127436.2

Genome annotation databases

EnsemblPlantsiAT2G18800.1; AT2G18800.1; AT2G18800
GeneIDi816395
GrameneiAT2G18800.1; AT2G18800.1; AT2G18800
KEGGiath:AT2G18800

Similar proteinsi

Entry informationi

Entry nameiXTH21_ARATH
AccessioniPrimary (citable) accession number: Q9ZV40
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 28, 2003
Last sequence update: May 1, 1999
Last modified: April 25, 2018
This is version 131 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome
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Main funding by: National Institutes of Health