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Protein

1-aminocyclopropane-1-carboxylate oxidase 2

Gene

ACO2

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Enzyme involved in the ethylene biosynthesis. Required to mediate the 1-aminocyclopropane-1-carboxylic acid (ACC)-mediated reversion of the ABA-induced inhibition of seed germination via endosperm rupture. May promote stem elongation by maximizing the extensibility cells, possibly by activating ethylene biosynthesis, in response to very-long-chain fatty acids (VLCFAs C20:0 to C30:0).2 Publications

Catalytic activityi

1-aminocyclopropane-1-carboxylate + ascorbate + O2 = ethylene + cyanide + dehydroascorbate + CO2 + 2 H2O.

Cofactori

Fe2+PROSITE-ProRule annotation1 Publication, Cu2+PROSITE-ProRule annotation1 PublicationNote: Binds 1 Fe2+ ion per subunit. Can also bind Cu2+ ions.PROSITE-ProRule annotation1 Publication

Pathwayi: ethylene biosynthesis via S-adenosyl-L-methionine

This protein is involved in step 2 of the subpathway that synthesizes ethylene from S-adenosyl-L-methionine.
Proteins known to be involved in the 2 steps of the subpathway in this organism are:
  1. 1-aminocyclopropane-1-carboxylate synthase 8 (ACS8), 1-aminocyclopropane-1-carboxylate synthase 4 (ACS4), 1-aminocyclopropane-1-carboxylate synthase 7 (ACS7), 1-aminocyclopropane-1-carboxylate synthase 2 (ACS2), 1-aminocyclopropane-1-carboxylate synthase 11 (ACS11), 1-aminocyclopropane-1-carboxylate synthase 9 (ACS9), 1-aminocyclopropane-1-carboxylate synthase 6 (ACS6), 1-aminocyclopropane-1-carboxylate synthase 5 (ACS5)
  2. 1-aminocyclopropane-1-carboxylate oxidase 2 (ACO2), 1-aminocyclopropane-1-carboxylate oxidase 3 (At1g12010), 1-aminocyclopropane-1-carboxylate oxidase 4 (ACO4), 1-aminocyclopropane-1-carboxylate oxidase 1 (ACO1), 1-aminocyclopropane-1-carboxylate oxidase 5 (At1g77330)
This subpathway is part of the pathway ethylene biosynthesis via S-adenosyl-L-methionine, which is itself part of Alkene biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes ethylene from S-adenosyl-L-methionine, the pathway ethylene biosynthesis via S-adenosyl-L-methionine and in Alkene biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi180IronPROSITE-ProRule annotation1
Metal bindingi182IronPROSITE-ProRule annotation1
Metal bindingi237IronPROSITE-ProRule annotation1
Binding sitei2472-oxoglutaratePROSITE-ProRule annotation1

GO - Molecular functioni

  • 1-aminocyclopropane-1-carboxylate oxidase activity Source: TAIR
  • copper ion binding Source: TAIR
  • L-ascorbic acid binding Source: UniProtKB-KW

GO - Biological processi

  • cellular response to fatty acid Source: UniProtKB
  • cellular response to iron ion Source: TAIR
  • cellular response to nitric oxide Source: UniProtKB
  • defense response Source: UniProtKB-KW
  • detection of ethylene stimulus Source: TAIR
  • ethylene biosynthetic process Source: TAIR
  • positive regulation of seed germination Source: UniProtKB
  • response to cytokinin Source: TAIR
  • response to salt stress Source: TAIR

Keywordsi

Molecular functionOxidoreductase
Biological processEthylene biosynthesis, Plant defense
LigandCopper, Iron, Metal-binding, Vitamin C

Enzyme and pathway databases

UniPathwayiUPA00384; UER00563.

Names & Taxonomyi

Protein namesi
Recommended name:
1-aminocyclopropane-1-carboxylate oxidase 2 (EC:1.14.17.4)
Short name:
ACC oxidase 2
Short name:
AtACO2
Gene namesi
Name:ACO2
Synonyms:EI305
Ordered Locus Names:At1g62380
ORF Names:F24O1.10
OrganismiArabidopsis thaliana (Mouse-ear cress)
Taxonomic identifieri3702 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
Proteomesi
  • UP000006548 Componenti: Chromosome 1

Organism-specific databases

AraportiAT1G62380.
TAIRilocus:2027099. AT1G62380.

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Chloroplast Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertion Graphics by Christian Stolte; Source: COMPARTMENTS

Pathology & Biotechi

Disruption phenotypei

Impaired in the 1-aminocyclopropane-1-carboxylic acid (ACC)-mediated reversion of the ABA-induced inhibition of seed germination.1 Publication

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00004082981 – 3201-aminocyclopropane-1-carboxylate oxidase 2Add BLAST320

Proteomic databases

PaxDbiQ41931.
PRIDEiQ41931.

PTM databases

iPTMnetiQ41931.
SwissPalmiQ41931.

Expressioni

Tissue specificityi

Expressed in vegetative tissues. Constitutively expressed in leaves and blades. In ethylene exposed etiolated seedlings, localized in cells at the outer side of the exaggerated hook in an ethylene-dependent manner and following an ethylene sensitive pattern. Also detected in the root tip when treated by ethylene.3 Publications

Inductioni

Upon iron deprivation. Induced by ethylene, particularly in root tips and hooks of ethiolated seedlings. Promoted by ozone O3. Accumulates in response to very-long-chain fatty acids (VLCFAs C20:0 to C30:0). Induced in roots by nitric oxide (NO).7 Publications

Gene expression databases

GenevisibleiQ41931. AT.

Interactioni

Protein-protein interaction databases

BioGridi27757. 2 interactors.
IntActiQ41931. 1 interactor.
STRINGi3702.AT1G62380.1.

Structurei

Secondary structure

1320
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Beta strandi9 – 11Combined sources3
Helixi12 – 15Combined sources4
Helixi20 – 33Combined sources14
Beta strandi35 – 41Combined sources7
Helixi46 – 62Combined sources17
Helixi64 – 74Combined sources11
Turni75 – 78Combined sources4
Beta strandi84 – 86Combined sources3
Beta strandi91 – 100Combined sources10
Helixi103 – 105Combined sources3
Helixi111 – 139Combined sources29
Helixi145 – 151Combined sources7
Turni152 – 154Combined sources3
Beta strandi157 – 165Combined sources9
Helixi171 – 173Combined sources3
Beta strandi176 – 180Combined sources5
Beta strandi183 – 191Combined sources9
Beta strandi198 – 202Combined sources5
Beta strandi205 – 208Combined sources4
Beta strandi216 – 220Combined sources5
Helixi222 – 227Combined sources6
Turni228 – 230Combined sources3
Beta strandi237 – 239Combined sources3
Beta strandi247 – 255Combined sources9
Helixi266 – 268Combined sources3
Helixi280 – 290Combined sources11
Helixi296 – 301Combined sources6

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
5GJ9X-ray2.10A/B1-303[»]
5GJAX-ray2.10A/B/C/D/E/F/G/H1-303[»]
ProteinModelPortaliQ41931.
SMRiQ41931.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini156 – 256Fe2OG dioxygenasePROSITE-ProRule annotationAdd BLAST101

Coiled coil

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Coiled coili111 – 143Sequence analysisAdd BLAST33

Sequence similaritiesi

Keywords - Domaini

Coiled coil

Phylogenomic databases

eggNOGiKOG0143. Eukaryota.
COG3491. LUCA.
HOGENOMiHOG000276735.
KOiK05933.
OMAiKANYTAC.
OrthoDBiEOG09360IUD.
PhylomeDBiQ41931.

Family and domain databases

Gene3Di2.60.120.330. 1 hit.
InterProiView protein in InterPro
IPR026992. DIOX_N.
IPR027443. IPNS-like.
IPR005123. Oxoglu/Fe-dep_dioxygenase.
PfamiView protein in Pfam
PF03171. 2OG-FeII_Oxy. 1 hit.
PF14226. DIOX_N. 1 hit.
PROSITEiView protein in PROSITE
PS51471. FE2OG_OXY. 1 hit.

Sequencei

Sequence statusi: Complete.

Q41931-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MEKNMKFPVV DLSKLNGEER DQTMALINEA CENWGFFEIV NHGLPHDLMD
60 70 80 90 100
KIEKMTKDHY KTCQEQKFND MLKSKGLDNL ETEVEDVDWE STFYVRHLPQ
110 120 130 140 150
SNLNDISDVS DEYRTAMKDF GKRLENLAED LLDLLCENLG LEKGYLKKVF
160 170 180 190 200
HGTKGPTFGT KVSNYPPCPK PEMIKGLRAH TDAGGIILLF QDDKVSGLQL
210 220 230 240 250
LKDGDWIDVP PLNHSIVINL GDQLEVITNG KYKSVLHRVV TQQEGNRMSV
260 270 280 290 300
ASFYNPGSDA EISPATSLVE KDSEYPSFVF DDYMKLYAGV KFQPKEPRFA
310 320
AMKNASAVTE LNPTAAVETF
Length:320
Mass (Da):36,183
Last modified:November 1, 1998 - v2
Checksum:iE9B22DF21FDE35A4
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti261E → D in AAC27484 (PubMed:10409511).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF016100 mRNA. Translation: AAC27484.1.
AC003113 Genomic DNA. Translation: AAF70838.1.
CP002684 Genomic DNA. Translation: AEE33960.1.
AY045876 mRNA. Translation: AAK76550.1.
AY062685 mRNA. Translation: AAL32763.1.
AY093381 mRNA. Translation: AAM13380.1.
AY133851 mRNA. Translation: AAM91785.1.
AK230351 mRNA. Translation: BAF02150.1.
Z17775 mRNA. Translation: CAA79062.1.
PIRiT01448.
T52267.
RefSeqiNP_176428.1. NM_104918.5.
UniGeneiAt.24621.
At.37653.

Genome annotation databases

EnsemblPlantsiAT1G62380.1; AT1G62380.1; AT1G62380.
GeneIDi842536.
GrameneiAT1G62380.1; AT1G62380.1; AT1G62380.
KEGGiath:AT1G62380.

Similar proteinsi

Entry informationi

Entry nameiACCO2_ARATH
AccessioniPrimary (citable) accession number: Q41931
Secondary accession number(s): O81093, Q7DLM8
Entry historyiIntegrated into UniProtKB/Swiss-Prot: May 3, 2011
Last sequence update: November 1, 1998
Last modified: August 30, 2017
This is version 122 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

Documents

  1. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
  2. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  3. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  4. SIMILARITY comments
    Index of protein domains and families