Reviewed, UniProtKB/Swiss-Prot Q7XWU8 (EXPA1_ORYSJ)

Names and origin

Protein names

Recommended name:
    Expansin-A1
Alternative name(s):
    OsEXPA1
    Alpha-expansin-1
    OsEXP1
    OsaEXPa1.16
    RiExA

Gene names

Name:	EXPA1
Synonyms:	EXP1
Ordered Locus Names:	Os04g0228400, LOC_Os04g15840
ORF Names:	OSJNBa0065B15.2

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	261 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.
Tissue specificity	Expressed in adventitious root primordia, coleoptiles, shoot apex, leaf primordia, panicles and flowers. Ref.1 Ref.6 Ref.9
Developmental stage	Expressed in the apical region (growing zone) of the root hair. Expressed in the basal growing zone of air-grown internode. Expressed in the growing region of leaves. Expressed in the developing seeds. Ref.1 Ref.2 Ref.7
Induction	By gibberellin (GA3) and wounding. Ref.1 Ref.2
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
PTM	Disulfide bond
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 – 28	28	Potential
	Chain	29 – 261	233	Expansin-A1		PRO_0000251980
Regions
	Domain	52 – 167	116	Expansin-like EG45
	Domain	177 – 256	80	Expansin-like CBD
Amino acid modifications
	Disulfide bond	55 ↔ 83		By similarity
	Disulfide bond	86 ↔ 162		By similarity
	Disulfide bond	91 ↔ 100		By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q7XWU8-1 [UniParc]. Last modified March 1, 2004. Version 2. Checksum: 941705D5617B6FF8	FASTA	261	27,748
	10 20 30 40 50 60 MAGSSAATSC ARFLALLATC LLWNEAASFT ASGWNKAFAT FYGGSDASGT MGGACGYGDL 70 80 90 100 110 120 YSTGYGTNTA ALSTVLFNDG ASCGQCYRIM CDYQADRRFC ISGTSVTITA TNLCPPNYAL 130 140 150 160 170 180 PNDAGGWCNP PRQHFDMAEP AWLKIGVYVG GIVPVMYQRV PCAKQGGVRF TINGRDYFEL 190 200 210 220 230 240 VLVSNVGGVG SIQSVSIKGS RTGWMAMSRN WGVNWQSNAY LDGQSLSFKV TSSDGQTLTF 250 260 LDVAPAGWTF GQTFSTSQQF S

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Expression of expansin genes is correlated with growth in deepwater rice." Cho H.-T., Kende H. Plant Cell 9:1661-1671(1997) [PubMed: 9338967] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], TISSUE SPECIFICITY, DEVELOPMENTAL STAGE, INDUCTION. Strain: cv. Nipponbare. Tissue: Shoot.
[2]	"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], DEVELOPMENTAL STAGE, INDUCTION.
[3]	"Sequence and analysis of rice chromosome 4." Feng Q., Zhang Y., Hao P., Wang S., Fu G., Huang Y., Li Y., Zhu J., Liu Y., Hu X., Jia P., Zhang Y., Zhao Q., Ying K., Yu S., Tang Y., Weng Q., Zhang L. , Lu Y., Mu J., Lu Y., Zhang L.S., Yu Z., Fan D., Liu X., Lu T., Li C., Wu Y., Sun T., Lei H., Li T., Hu H., Guan J., Wu M., Zhang R., Zhou B., Chen Z., Chen L., Jin Z., Wang R., Yin H., Cai Z., Ren S., Lv G., Gu W., Zhu G., Tu Y., Jia J., Zhang Y., Chen J., Kang H., Chen X., Shao C., Sun Y., Hu Q., Zhang X., Zhang W., Wang L., Ding C., Sheng H., Gu J., Chen S., Ni L., Zhu F., Chen W., Lan L., Lai Y., Cheng Z., Gu M., Jiang J., Li J., Hong G., Xue Y., Han B. Nature 420:316-320(2002) [PubMed: 12447439] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. Nipponbare.
[4]	"The map-based sequence of the rice genome." International rice genome sequencing project (IRGSP) Nature 436:793-800(2005) [PubMed: 16100779] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. Nipponbare.
[5]	"Curated genome annotation of Oryza sativa ssp. japonica and comparative genome analysis with Arabidopsis thaliana." The rice annotation project (RAP) Genome Res. 17:175-183(2007) [PubMed: 17210932] [Abstract] Cited for: GENOME REANNOTATION. Strain: cv. Nipponbare.
[6]	"Tissue localization of expansins in deepwater rice." Cho H.-T., Kende H. Plant J. 15:805-812(1998) [PubMed: 9807819] [Abstract] Cited for: TISSUE SPECIFICITY.
[7]	"Expression of alpha-expansin genes in young seedlings of rice (Oryza sativa L.)." Huang J., Takano T., Akita S. Planta 211:467-473(2000) [PubMed: 11030545] [Abstract] Cited for: DEVELOPMENTAL STAGE.
[8]	"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.
[9]	"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: TISSUE SPECIFICITY.

Web resources

EXPANSIN homepage

Cross-references

Sequence databases
EMBL GenBank DDBJ	Y07782 mRNA. Translation: CAA69105.1. AF394543 Genomic DNA. Translation: AAL24479.1. AL731598 Genomic DNA. Translation: CAD39898.2. AP008210 Genomic DNA. Translation: BAF14203.1.
PIR	T03737.
RefSeq	NP_001052289.1.
UniGene	Os.2696
3D structure databases
SMR	Q7XWU8. Positions 31-261.
ModBase	Search...
Genome annotation databases
GeneID	4335222.
GenomeReviews	Gene locus EXPA1 in contig AP008210_GR.
KEGG	osa:4335222.
Organism-specific databases
Gramene	Q7XWU8.
Phylogenomic databases
HOGENOM	HBG605129.
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

EXPA1_ORYSJ

Accession

Primary (citable) accession number: Q7XWU8
Secondary accession number(s): O24208

Entry history

Integrated into UniProtKB/Swiss-Prot:	October 3, 2006
Last sequence update:	March 1, 2004
Last modified:	January 19, 2010
This is version 41 of the entry and version 2 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

PPAP (Plant Proteome Annotation Project)