Q9M0D2 (XTH18_ARATH) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Probable xyloglucan endotransglucosylase/hydrolase protein 18
Short name=At-XTH18
Short name=XTH-18
EC=2.4.1.207

Gene names

Name:	XTH18
Ordered Locus Names:	At4g30280
ORF Names:	F17I23.380

Organism

Arabidopsis thaliana (Mouse-ear cress) [Reference proteome]

Taxonomic identifier

3702 [NCBI]

Taxonomic lineage

cellular organisms › Eukaryota › Viridiplantae › Streptophyta › Streptophytina › Embryophyta › Tracheophyta › Euphyllophyta › Spermatophyta › Magnoliophyta › eudicotyledons › core eudicotyledons › rosids › malvids › Brassicales › Brassicaceae › Camelineae › Arabidopsis

Protein attributes

Sequence length	282 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at transcript level

General annotation (Comments)

Function	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.
Catalytic activity	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.
Subcellular location	Secreted › cell wall Probable. Secreted › extracellular space › apoplast Probable.
Tissue specificity	Root specific. Ref.6
Post-translational modification	Contains at least one intrachain disulfide bond essential for its enzymatic activity By similarity.
Sequence similarities	Belongs to the glycosyl hydrolase 16 family. XTH group 2 subfamily.

Ontologies

Keywords
Biological process	Cell wall biogenesis/degradation
Cellular component	Apoplast Cell wall Secreted
Domain	Signal
Molecular function	Glycosidase Hydrolase Transferase
PTM	Disulfide bond Glycoprotein
Technical term	Complete proteome Reference proteome
Gene Ontology (GO)
Biological_process	xyloglucan metabolic process Inferred from direct assay PubMed 20732879. Source: TAIR
Cellular_component	Golgi apparatus Inferred from direct assay PubMed 22430844. Source: TAIR apoplast Inferred from electronic annotation. Source: UniProtKB-SubCell cell wall Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular_function	hydrolase activity, hydrolyzing O-glycosyl compounds Inferred from electronic annotation. Source: InterPro xyloglucan endotransglucosylase activity Inferred from direct assay PubMed 20732879. Source: TAIR xyloglucan:xyloglucosyl transferase activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Signal peptide	1 – 26	26	Potential
	Chain	27 – 282	256	Probable xyloglucan endotransglucosylase/hydrolase protein 18		PRO_0000011818
Sites
	Active site	104	1	Nucleophile By similarity
	Active site	108	1	Proton donor By similarity
Amino acid modifications
	Glycosylation	112	1	N-linked (GlcNAc...) Potential
	Glycosylation	238	1	N-linked (GlcNAc...) Potential

Sequences

	Sequence		Length	Mass (Da)
	Q9M0D2 [UniParc]. Last modified October 1, 2000. Version 1. Checksum: 437B3AC683F71B31	FASTA	282	32,072
	10 20 30 40 50 60 MKLSCGTSFA FLIMFLFAAQ SMHVYAGSFH KDVQIHWGDG RGKVRDRDGK LLSLSLDKSS 70 80 90 100 110 120 GSGFQSNQEF LYGKAEVQMK LVPGNSAGTV TTFYLKSPGT TWDEIDFEFL GNLSGHPYTL 130 140 150 160 170 180 HTNVYTKGSG DKEQQFHLWF DPTVNFHTYC ITWNPQRIIF TVDGIPIREF KNSESIGVPF 190 200 210 220 230 240 PTKQPMRLYA SLWEAEHWAT RGGLEKTDWS KAPFTAFYRN YNVEGCVWAN GKSSCPANSS 250 260 270 280 WFTQQLDSNG QTRMKGVQSK YMVYNYCNDK RRFPRGVPVE CS

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Signal peptide selection derived cDNAs from Arabidopsis thaliana leaves and guard cells." Stracke R., Palme K. Submitted (AUG-1998) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
[2]	"Sequence and analysis of chromosome 4 of the plant Arabidopsis thaliana." Mayer K.F.X., Schueller C., Wambutt R., Murphy G., Volckaert G., Pohl T., Duesterhoeft A., Stiekema W., Entian K.-D., Terryn N., Harris B., Ansorge W., Brandt P., Grivell L.A., Rieger M., Weichselgartner M., de Simone V., Obermaier B. , Mache R., Mueller M., Kreis M., Delseny M., Puigdomenech P., Watson M., Schmidtheini T., Reichert B., Portetelle D., Perez-Alonso M., Boutry M., Bancroft I., Vos P., Hoheisel J., Zimmermann W., Wedler H., Ridley P., Langham S.-A., McCullagh B., Bilham L., Robben J., van der Schueren J., Grymonprez B., Chuang Y.-J., Vandenbussche F., Braeken M., Weltjens I., Voet M., Bastiaens I., Aert R., Defoor E., Weitzenegger T., Bothe G., Ramsperger U., Hilbert H., Braun M., Holzer E., Brandt A., Peters S., van Staveren M., Dirkse W., Mooijman P., Klein Lankhorst R., Rose M., Hauf J., Koetter P., Berneiser S., Hempel S., Feldpausch M., Lamberth S., Van den Daele H., De Keyser A., Buysshaert C., Gielen J., Villarroel R., De Clercq R., van Montagu M., Rogers J., Cronin A., Quail M.A., Bray-Allen S., Clark L., Doggett J., Hall S., Kay M., Lennard N., McLay K., Mayes R., Pettett A., Rajandream M.A., Lyne M., Benes V., Rechmann S., Borkova D., Bloecker H., Scharfe M., Grimm M., Loehnert T.-H., Dose S., de Haan M., Maarse A.C., Schaefer M., Mueller-Auer S., Gabel C., Fuchs M., Fartmann B., Granderath K., Dauner D., Herzl A., Neumann S., Argiriou A., Vitale D., Liguori R., Piravandi E., Massenet O., Quigley F., Clabauld G., Muendlein A., Felber R., Schnabl S., Hiller R., Schmidt W., Lecharny A., Aubourg S., Chefdor F., Cooke R., Berger C., Monfort A., Casacuberta E., Gibbons T., Weber N., Vandenbol M., Bargues M., Terol J., Torres A., Perez-Perez A., Purnelle B., Bent E., Johnson S., Tacon D., Jesse T., Heijnen L., Schwarz S., Scholler P., Heber S., Francs P., Bielke C., Frishman D., Haase D., Lemcke K., Mewes H.-W., Stocker S., Zaccaria P., Bevan M., Wilson R.K., de la Bastide M., Habermann K., Parnell L., Dedhia N., Gnoj L., Schutz K., Huang E., Spiegel L., Sekhon M., Murray J., Sheet P., Cordes M., Abu-Threideh J., Stoneking T., Kalicki J., Graves T., Harmon G., Edwards J., Latreille P., Courtney L., Cloud J., Abbott A., Scott K., Johnson D., Minx P., Bentley D., Fulton B., Miller N., Greco T., Kemp K., Kramer J., Fulton L., Mardis E., Dante M., Pepin K., Hillier L.W., Nelson J., Spieth J., Ryan E., Andrews S., Geisel C., Layman D., Du H., Ali J., Berghoff A., Jones K., Drone K., Cotton M., Joshu C., Antonoiu B., Zidanic M., Strong C., Sun H., Lamar B., Yordan C., Ma P., Zhong J., Preston R., Vil D., Shekher M., Matero A., Shah R., Swaby I.K., O'Shaughnessy A., Rodriguez M., Hoffman J., Till S., Granat S., Shohdy N., Hasegawa A., Hameed A., Lodhi M., Johnson A., Chen E., Marra M.A., Martienssen R., McCombie W.R. Nature 402:769-777(1999) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. Columbia.
[3]	The Arabidopsis Information Resource (TAIR) Submitted (APR-2011) to the EMBL/GenBank/DDBJ databases Cited for: GENOME REANNOTATION. Strain: cv. Columbia.
[4]	"Empirical analysis of transcriptional activity in the Arabidopsis genome." Yamada K., Lim J., Dale J.M., Chen H., Shinn P., Palm C.J., Southwick A.M., Wu H.C., Kim C.J., Nguyen M., Pham P.K., Cheuk R.F., Karlin-Newmann G., Liu S.X., Lam B., Sakano H., Wu T., Yu G. , Miranda M., Quach H.L., Tripp M., Chang C.H., Lee J.M., Toriumi M.J., Chan M.M., Tang C.C., Onodera C.S., Deng J.M., Akiyama K., Ansari Y., Arakawa T., Banh J., Banno F., Bowser L., Brooks S.Y., Carninci P., Chao Q., Choy N., Enju A., Goldsmith A.D., Gurjal M., Hansen N.F., Hayashizaki Y., Johnson-Hopson C., Hsuan V.W., Iida K., Karnes M., Khan S., Koesema E., Ishida J., Jiang P.X., Jones T., Kawai J., Kamiya A., Meyers C., Nakajima M., Narusaka M., Seki M., Sakurai T., Satou M., Tamse R., Vaysberg M., Wallender E.K., Wong C., Yamamura Y., Yuan S., Shinozaki K., Davis R.W., Theologis A., Ecker J.R. Science 302:842-846(2003) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Strain: cv. Columbia.
[5]	"Full-length cDNA from Arabidopsis thaliana." Brover V.V., Troukhan M.E., Alexandrov N.A., Lu Y.-P., Flavell R.B., Feldmann K.A. Submitted (MAR-2002) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
[6]	"A comprehensive expression analysis of all members of a gene family encoding cell-wall enzymes allowed us to predict cis-regulatory regions involved in cell-wall construction in specific organs of Arabidopsis." Yokoyama R., Nishitani K. Plant Cell Physiol. 42:1025-1033(2001) [PubMed] [Europe PMC] [Abstract] Cited for: TISSUE SPECIFICITY.
[7]	"The XTH family of enzymes involved in xyloglucan endotransglucosylation and endohydrolysis: current perspectives and a new unifying nomenclature." Rose J.K.C., Braam J., Fry S.C., Nishitani K. Plant Cell Physiol. 43:1421-1435(2002) [PubMed] [Europe PMC] [Abstract] Cited for: NOMENCLATURE.
+	Additional computationally mapped references.

Web resources

XTH-World

Cross-references

Sequence databases
EMBL GenBank DDBJ	AF083779 mRNA. Translation: AAN60337.1. AL161576 Genomic DNA. Translation: CAB81021.1. CP002687 Genomic DNA. Translation: AEE85746.1. AF419549 mRNA. Translation: AAL31883.1. AY097337 mRNA. Translation: AAM19853.1. AY085267 mRNA. Translation: AAM62499.1.
IPI	IPI00527321.
PIR	A85354.
RefSeq	NP_194757.1. NM_119174.1.
UniGene	At.27397.
3D structure databases
ProteinModelPortal	Q9M0D2.
SMR	Q9M0D2. Positions 37-272.
ModBase	Search...
Protein-protein interaction databases
STRING	3702.AT4G30280.1-P.
Protein family/group databases
CAZy	GH16. Glycoside Hydrolase Family 16.
Proteomic databases
PaxDb	Q9M0D2.
PRIDE	Q9M0D2.
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
EnsemblPlants	AT4G30280.1; AT4G30280.1; AT4G30280.
GeneID	829151.
KEGG	ath:AT4G30280.
Organism-specific databases
TAIR	At4g30280.
Phylogenomic databases
eggNOG	COG2273.
HOGENOM	HOG000236368.
InParanoid	Q9M0D2.
KO	K08235.
OMA	PNNSAGT.
PhylomeDB	Q9M0D2.
ProtClustDB	CLSN2679615.
Gene expression databases
Genevestigator	Q9M0D2.
GermOnline	AT4G30280. Arabidopsis thaliana.
Family and domain databases
Gene3D	2.60.120.200. 1 hit.
InterPro	IPR008264. Beta_glucanase. IPR008985. ConA-like_lec_gl_sf. IPR013320. ConA-like_subgrp. IPR000757. Glyco_hydro_16. IPR008263. Glycoside_hydrolase_16_AS. IPR016455. XET. IPR010713. XET_C. [Graphical view]
Pfam	PF00722. Glyco_hydro_16. 1 hit. PF06955. XET_C. 1 hit. [Graphical view]
PIRSF	PIRSF005604. XET. 1 hit.
PRINTS	PR00737. GLHYDRLASE16.
SUPFAM	SSF49899. ConA_like_lec_gl. 1 hit.
PROSITE	PS01034. GLYCOSYL_HYDROL_F16. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

XTH18_ARATH

Accession

Primary (citable) accession number: Q9M0D2

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 28, 2003
Last sequence update:	October 1, 2000
Last modified:	May 1, 2013
This is version 99 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Plant Protein Annotation Program