Reviewed, UniProtKB/Swiss-Prot Q10KN4 (EXP21_ORYSJ)

Names and origin

Protein names

Recommended name:
    Expansin-A21
Alternative name(s):
    OsEXPA21
    Alpha-expansin-21
    OsEXP21
    OsaEXPa1.21

Gene names

Name:	EXPA21
Synonyms:	EXP21
Ordered Locus Names:	Os03g0377100, LOC_Os03g25990
ORF Names:	OSJNBb0048D20.14

Organism

Oryza sativa subsp. japonica (Rice)

Taxonomic identifier

39947 [NCBI]

Taxonomic lineage

Eukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Magnoliophyta › Liliopsida › Poales › Poaceae › BEP clade › Ehrhartoideae › Oryzeae › Oryza

Protein attributes

Sequence length	264 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	May cause loosening and extension of plant cell walls by disrupting non-covalent bonding between cellulose microfibrils and matrix glucans. No enzymatic activity has been found. May be required for rapid internodal elongation in deepwater rice during submergence By similarity.
Subcellular location	Secreted › cell wall By similarity. Membrane; Peripheral membrane protein By similarity.
Sequence similarities	Belongs to the expansin family. Expansin A subfamily. Contains 1 expansin-like CBD domain. Contains 1 expansin-like EG45 domain.

Ontologies

Keywords
Biological process	Cell wall biogenesis/degradation
Cellular component	Cell wall Membrane Secreted
Domain	Signal
Gene Ontology (GO)
Biological process	plant-type cell wall organization Inferred from electronic annotation. Source: InterPro
Cellular component	cell wall Inferred from electronic annotation. Source: UniProtKB-SubCell extracellular region Inferred from electronic annotation. Source: UniProtKB-KW extrinsic to membrane Inferred from electronic annotation. Source: UniProtKB-SubCell
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Signal peptide	1 – 24	24	Potential
	Chain	25 – 264	240	Expansin-A21		PRO_0000252000
Regions
	Domain	48 – 168	121	Expansin-like EG45
	Domain	178 – 260	83	Expansin-like CBD

Sequences

	Sequence		Length	Mass (Da)
	Q10KN4-1 [UniParc]. Last modified August 22, 2006. Version 1. Checksum: 12F5CC14D8F35D1D	FASTA	264	27,285
	10 20 30 40 50 60 MAPPSLPILL VLLSLSSSLS SSSAAAAGRW TDAHATFYGG ADASGTMGGA CGYGNTYGQG 70 80 90 100 110 120 YGTDTAALSA VMFGDGLSCG ACFELRCGGG GGGDRRGCLP PAAGKSIVVT ATDLCPANHA 130 140 150 160 170 180 LPGDRGGWCN PPLHHFDLSQ PAFLRIARFQ SGIVPVSYRR VACRRKGGMR FTINGHSYFN 190 200 210 220 230 240 LVLVSNVGGA GDVHAVAVKA GGGRKARWQA MARNWGQNWQ SGALLDGQAL SFTVTTGDRR 250 260 SVVSYNVAPA GWAFGQTFTG RQFT

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Expression of alpha-expansin and expansin-like genes in deepwater rice." Lee Y., Kende H. Plant Physiol. 130:1396-1405(2002) [PubMed: 12428004] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"Sequence, annotation, and analysis of synteny between rice chromosome 3 and diverged grass species." The rice chromosome 3 sequencing consortium Buell C.R., Yuan Q., Ouyang S., Liu J., Zhu W., Wang A., Maiti R., Haas B., Wortman J., Pertea M., Jones K.M., Kim M., Overton L., Tsitrin T., Fadrosh D., Bera J., Weaver B., Jin S. , Johri S., Reardon M., Webb K., Hill J., Moffat K., Tallon L., Van Aken S., Lewis M., Utterback T., Feldblyum T., Zismann V., Iobst S., Hsiao J., de Vazeille A.R., Salzberg S.L., White O., Fraser C.M., Yu Y., Kim H., Rambo T., Currie J., Collura K., Kernodle-Thompson S., Wei F., Kudrna K., Ammiraju J.S.S., Luo M., Goicoechea J.L., Wing R.A., Henry D., Oates R., Palmer M., Pries G., Saski C., Simmons J., Soderlund C., Nelson W., de la Bastide M., Spiegel L., Nascimento L., Huang E., Preston R., Zutavern T., Palmer L., O'Shaughnessy A., Dike S., McCombie W.R., Minx P., Cordum H., Wilson R., Jin W., Lee H.R., Jiang J., Jackson S. Genome Res. 15:1284-1291(2005) [PubMed: 16109971] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. Nipponbare.
[3]	"Characterization and transcriptional expression of the alpha-expansin gene family in rice." Shin J.-H., Jeong D.-H., Park M.C., An G. Mol. Cells 20:210-218(2005) [PubMed: 16267395] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 9-250. Strain: cv. Dongjin.
[4]	"Nomenclature for members of the expansin superfamily of genes and proteins." Kende H., Bradford K.J., Brummell D.A., Cho H.-T., Cosgrove D.J., Fleming A.J., Gehring C., Lee Y., McQueen-Mason S.J., Rose J.K.C., Voesenek L.A.C. Plant Mol. Biol. 55:311-314(2004) [PubMed: 15604683] [Abstract] Cited for: NOMENCLATURE.

Web resources

EXPANSIN homepage

Cross-references

Sequence databases
EMBL GenBank DDBJ	AF394556 Genomic DNA. Translation: AAL24492.1. AC084766 Genomic DNA. Translation: AAL82516.1. DP000009 Genomic DNA. Translation: ABF96232.1. DQ061062 mRNA. Translation: AAY63553.1.
RefSeq	NP_001050224.1.
UniGene	Os.69098
3D structure databases
SMR	Q10KN4. Positions 21-263.
ModBase	Search...
Genome annotation databases
GeneID	4332961.
KEGG	osa:4332961.
Organism-specific databases
Gramene	Q4PR45.
Family and domain databases
InterPro	IPR009009. Barwin-related_endoglucanase. IPR007112. Expan_endogl. IPR007118. Expan_Lol_pI. IPR007117. Expan_Lol_pI_C. IPR002963. Expansin. IPR014734. Pollen_allergen. IPR005132. RlpA. [Graphical view]
Gene3D	G3DSA:2.60.40.760. Expan_Lol_pI_C. 1 hit. G3DSA:2.40.40.40. Pollen_allergen. 1 hit.
Pfam	PF03330. DPBB_1. 1 hit. PF01357. Pollen_allerg_1. 1 hit. [Graphical view]
PRINTS	PR01226. EXPANSIN. PR01225. EXPANSNFAMLY.
PROSITE	PS50843. EXPANSIN_CBD. 1 hit. PS50842. EXPANSIN_EG45. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

EXP21_ORYSJ

Accession

Primary (citable) accession number: Q10KN4
Secondary accession number(s): Q4PR45, Q946I1

Entry history

Integrated into UniProtKB/Swiss-Prot:	October 3, 2006
Last sequence update:	August 22, 2006
Last modified:	January 19, 2010
This is version 25 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

PPAP (Plant Proteome Annotation Project)