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Protein

Expansin-B1

Gene

EXPB1

Organism
Zea mays (Maize)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

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.2 Publications

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Cell wall biogenesis/degradation

Names & Taxonomyi

Protein namesi
Recommended name:
Expansin-B1
Alternative name(s):
Allergen Zea m 1d
Beta-expansin-1a
Pollen allergen Zea m 1
ZmEXPB1
Allergen: Zea m 1
Gene namesi
Name:EXPB1
Synonyms:EXPB1A
OrganismiZea mays (Maize)
Taxonomic identifieri4577 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaPoalesPoaceaePACMAD cladePanicoideaeAndropogonodaeAndropogoneaeTripsacinaeZea
Proteomesi
  • UP000007305 Componenti: Unplaced

Organism-specific databases

MaizeGDBi403651.

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cell wall, Membrane, Secreted

Pathology & Biotechi

Allergenic propertiesi

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

Keywords - Diseasei

Allergen

Protein family/group databases

Allergomei680. Zea m 1.

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 241 PublicationAdd BLAST24
ChainiPRO_000000872425 – 269Expansin-B1Add BLAST245

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Glycosylationi34N-linked (GlcNAc...)1 Publication1
Disulfide bondi66 ↔ 94PROSITE-ProRule annotation1 Publication
Disulfide bondi97 ↔ 164PROSITE-ProRule annotation1 Publication
Disulfide bondi102 ↔ 108PROSITE-ProRule annotation1 Publication

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PaxDbiP58738.
PRIDEiP58738.

Expressioni

Tissue specificityi

Expressed in anthers and pollen.1 Publication

Developmental stagei

Expression low before and high after pollen mitosis.

Interactioni

Protein-protein interaction databases

STRINGi4577.GRMZM2G146551_P02.

Structurei

Secondary structure

1269
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Beta strandi44 – 50Combined sources7
Turni74 – 78Combined sources5
Beta strandi80 – 83Combined sources4
Helixi85 – 88Combined sources4
Helixi89 – 91Combined sources3
Beta strandi97 – 101Combined sources5
Beta strandi104 – 108Combined sources5
Beta strandi113 – 120Combined sources8
Beta strandi125 – 132Combined sources8
Helixi134 – 139Combined sources6
Helixi146 – 149Combined sources4
Turni150 – 152Combined sources3
Beta strandi155 – 162Combined sources8
Beta strandi173 – 176Combined sources4
Beta strandi181 – 183Combined sources3
Beta strandi187 – 190Combined sources4
Beta strandi198 – 203Combined sources6
Beta strandi206 – 208Combined sources3
Beta strandi215 – 218Combined sources4
Beta strandi221 – 223Combined sources3
Beta strandi236 – 240Combined sources5
Beta strandi245 – 249Combined sources5
Beta strandi261 – 263Combined sources3

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
2HCZX-ray2.75X25-269[»]
ProteinModelPortaliP58738.
SMRiP58738.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP58738.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini63 – 169Expansin-like EG45PROSITE-ProRule annotationAdd BLAST107
Domaini183 – 264Expansin-like CBDPROSITE-ProRule annotationAdd BLAST82

Sequence similaritiesi

Belongs to the expansin family. Expansin B subfamily.Curated
Contains 1 expansin-like CBD domain.PROSITE-ProRule annotation
Contains 1 expansin-like EG45 domain.PROSITE-ProRule annotation

Keywords - Domaini

Signal

Phylogenomic databases

eggNOGiENOG410JU96. Eukaryota.
ENOG4110738. LUCA.
HOGENOMiHOG000220794.

Family and domain databases

Gene3Di2.40.40.10. 1 hit.
2.60.40.760. 1 hit.
InterProiIPR007118. Expan_Lol_pI.
IPR007112. Expansin/allergen_DPBB_dom.
IPR007117. Expansin_CBD.
IPR005795. LolPI.
IPR009009. RlpA-like_DPBB.
[Graphical view]
PfamiPF03330. DPBB_1. 1 hit.
PF01357. Pollen_allerg_1. 1 hit.
[Graphical view]
PRINTSiPR01225. EXPANSNFAMLY.
PR00829. LOLP1ALLERGN.
SMARTiSM00837. DPBB_1. 1 hit.
[Graphical view]
SUPFAMiSSF49590. SSF49590. 1 hit.
SSF50685. SSF50685. 1 hit.
PROSITEiPS50843. EXPANSIN_CBD. 1 hit.
PS50842. EXPANSIN_EG45. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

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

P58738-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MGSLANNIMV VGAVLAALVA GGSCGPPKVP PGPNITTNYN GKWLTARATW
60 70 80 90 100
YGQPNGAGAP DNGGACGIKN VNLPPYSGMT ACGNVPIFKD GKGCGSCYEV
110 120 130 140 150
RCKEKPECSG NPVTVYITDM NYEPIAPYHF DLSGKAFGSL AKPGLNDKIR
160 170 180 190 200
HCGIMDVEFR RVRCKYPAGQ KIVFHIEKGC NPNYLAVLVK YVADDGDIVL
210 220 230 240 250
MEIQDKLSAE WKPMKLSWGA IWRMDTAKAL KGPFSIRLTS ESGKKVIAKD
260
VIPANWRPDA VYTSNVQFY
Length:269
Mass (Da):29,085
Last modified:October 3, 2006 - v2
Checksum:i636875ED5C2E02D4
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti5A → V in AAK56124 (PubMed:11351085).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF332174 mRNA. Translation: AAK56124.1.
AY197353 mRNA. Translation: AAO45608.1.
RefSeqiNP_001288510.1. NM_001301581.1.
UniGeneiZm.94167.

Genome annotation databases

EnsemblPlantsiZm00001d047147_T001; Zm00001d047147_T001; Zm00001d047147.
GeneIDi103638968.
GrameneiZm00001d047147_T001; Zm00001d047147_T001; Zm00001d047147.
KEGGizma:103638968.

Cross-referencesi

Web resourcesi

EXPANSIN homepage

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF332174 mRNA. Translation: AAK56124.1.
AY197353 mRNA. Translation: AAO45608.1.
RefSeqiNP_001288510.1. NM_001301581.1.
UniGeneiZm.94167.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
2HCZX-ray2.75X25-269[»]
ProteinModelPortaliP58738.
SMRiP58738.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi4577.GRMZM2G146551_P02.

Protein family/group databases

Allergomei680. Zea m 1.

Proteomic databases

PaxDbiP58738.
PRIDEiP58738.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblPlantsiZm00001d047147_T001; Zm00001d047147_T001; Zm00001d047147.
GeneIDi103638968.
GrameneiZm00001d047147_T001; Zm00001d047147_T001; Zm00001d047147.
KEGGizma:103638968.

Organism-specific databases

MaizeGDBi403651.

Phylogenomic databases

eggNOGiENOG410JU96. Eukaryota.
ENOG4110738. LUCA.
HOGENOMiHOG000220794.

Miscellaneous databases

EvolutionaryTraceiP58738.

Family and domain databases

Gene3Di2.40.40.10. 1 hit.
2.60.40.760. 1 hit.
InterProiIPR007118. Expan_Lol_pI.
IPR007112. Expansin/allergen_DPBB_dom.
IPR007117. Expansin_CBD.
IPR005795. LolPI.
IPR009009. RlpA-like_DPBB.
[Graphical view]
PfamiPF03330. DPBB_1. 1 hit.
PF01357. Pollen_allerg_1. 1 hit.
[Graphical view]
PRINTSiPR01225. EXPANSNFAMLY.
PR00829. LOLP1ALLERGN.
SMARTiSM00837. DPBB_1. 1 hit.
[Graphical view]
SUPFAMiSSF49590. SSF49590. 1 hit.
SSF50685. SSF50685. 1 hit.
PROSITEiPS50843. EXPANSIN_CBD. 1 hit.
PS50842. EXPANSIN_EG45. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiEXPB1_MAIZE
AccessioniPrimary (citable) accession number: P58738
Secondary accession number(s): Q84UA7
Entry historyi
Integrated into UniProtKB/Swiss-Prot: March 5, 2002
Last sequence update: October 3, 2006
Last modified: November 30, 2016
This is version 103 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Miscellaneous

Beta-expansin 1 extension activity grass cell wall is enhanced by dithiothreitol (DTT) and EDTA, inhibited by Cu2+ and Hg2+, and resistant to denaturation by methanol boiling and heat treatments.

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. Allergens
    Nomenclature of allergens and list of entries
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.