Q07154 · EXPB9_MAIZE

  • Protein
    Expansin-B9
  • Gene
    EXPB9
  • Status
    UniProtKB reviewed (Swiss-Prot)
  • Amino acids
  • Protein existence
    Evidence at protein level
  • Annotation score
    5/5

Function

function

May aid fertilization by loosening the cell wall of the stigma and style, thereby facilitating penetration of the pollen tube. Acts selectively on grass cell walls, which are relatively poor in pectins and xyloglucans and rich in glucuronoarabinoxylans and (1-3),(1-4)-beta-D-glucans, when compared with cell walls of other angiosperms, including other monocots.

GO annotations

all annotationsall molecular functionnucleotide bindingmolecular_functionnucleic acid bindingdna bindingchromatin bindingdna-binding transcription factor activityrna bindingcytoskeletal motor activitycatalytic activitynuclease activitysignaling receptor bindingstructural molecule activitytransporter activitybindingprotein bindingtranslation factor activity, rna bindinglipid bindingkinase activitytransferase activityhydrolase activityoxygen bindingenzyme regulator activitycarbohydrate bindingsignaling receptor activitytranslation regulator activitytranscription regulator activityother molecular functionall biological processcarbohydrate metabolic processgeneration of precursor metabolites and energynucleobase-containing compound metabolic processdna metabolic processtranslationlipid metabolic processtransportresponse to stresscell cyclecell communicationsignal transductioncell-cell signalingmulticellular organism developmentcircadian rhythmbiological_processmetabolic processcatabolic processbiosynthetic processresponse to light stimulusresponse to external stimulustropismresponse to biotic stimulusresponse to abiotic stimulusresponse to endogenous stimulusembryo developmentpost-embryonic developmentfruit ripeningabscissionpollinationflower developmentcellular processprogrammed cell deathphotosynthesiscellular component organizationcell growthprotein metabolic processcellular homeostasissecondary metabolic processreproductive processcell differentiationprotein modification processgrowthepigenetic regulation of gene expressionresponse to chemicalanatomical structure developmentregulation of molecular functionother biological processall cellular componentcellular_componentextracellular regioncell wallintracellular anatomical structurenucleusnuclear envelopenucleoplasmnucleoluscytoplasmmitochondrionlysosomeendosomevacuoleperoxisomeendoplasmic reticulumgolgi apparatuscytosolribosomecytoskeletonplasma membranechloroplastplastidthylakoidmembraneexternal encapsulating structureother cellular component
Cell color indicative of number of GO terms
AspectTerm
Cellular Componentextracellular region
Cellular Componentmembrane
Biological Processanatomical structure morphogenesis
Biological Processplant-type cell wall loosening
Biological Processplant-type cell wall organization or biogenesis
Biological Processsexual reproduction

Keywords

Protein family/group databases

Names & Taxonomy

Protein names

  • Recommended name
    Expansin-B9
  • Alternative names
    • Beta-expansin-1b
    • Pollen allergen Zea m 1
    • ZmEXPB9
  • Allergen name
    Zea m 1

Gene names

    • Name
      EXPB9
    • Synonyms
      EXPB1B

Organism names

  • Taxonomic identifier
  • Taxonomic lineage
    Eukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > Liliopsida > Poales > Poaceae > PACMAD clade > Panicoideae > Andropogonodae > Andropogoneae > Tripsacinae > Zea

Accessions

  • Primary accession
    Q07154
  • Secondary accessions
    • Q84UA8

Proteomes

Organism-specific databases

Subcellular Location

Secreted, cell wall
Membrane
; Peripheral membrane protein

Keywords

Phenotypes & Variants

Allergenic properties

Causes an allergic reaction in human. Causes maize pollen allergy.

Keywords

Protein family/group databases

PTM/Processing

Features

Showing features for signal, chain, glycosylation, disulfide bond.

TypeIDPosition(s)Description
Signal1-24
ChainPRO_000015457525-269Expansin-B9
Glycosylation34N-linked (GlcNAc...) asparagine
Disulfide bond66↔94
Disulfide bond97↔164
Disulfide bond102↔108

Keywords

Proteomic databases

PTM databases

Expression

Tissue specificity

Expressed in anthers and pollen.

Developmental stage

Expression low before and high after pollen mitosis.

Gene expression databases

Interaction

Protein-protein interaction databases

Structure

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain63-169Expansin-like EG45
Domain183-264Expansin-like CBD

Sequence similarities

Belongs to the expansin family. Expansin B subfamily.

Keywords

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Sequence processing
    The displayed sequence is further processed into a mature form.
  • Length
    269
  • Mass (Da)
    29,081
  • Last updated
    2006-10-03 v2
  • Checksum
    AFF6F4F72D03B501
MGSLANNIMVVGAVLAALVVGGSCGPPKVPPGPNITTNYNGKWLTARATWYGQPNGAGAPDNGGACGIKNVNLPPYSGMTACGNVPIFKDGKGCGSCYEVRCKEKPECSGNPVTVFITDMNYEPIAPYHFDLSGKAFGSLAKPGLNDKLRHCGIMDVEFRRVRCKYPAGQKIVFHIEKGCNPNYVAVLVKFVADDGDIVLMEIQDKLSAEWKPMKLSWGAIWRMDTAKALKGPFSIRLTSESGKKVIAKDIIPANWRPDAVYTSNVQFY

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
L14271
EMBL· GenBank· DDBJ
AAA33496.1
EMBL· GenBank· DDBJ
mRNA
AY197352
EMBL· GenBank· DDBJ
AAO45607.1
EMBL· GenBank· DDBJ
mRNA

Similar Proteins

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.
We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.
FeedbackHelp