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Ferritin-2, chloroplastic

Pisum sativum (Garden pea)
Reviewed-Annotation score: Annotation score: 2 out of 5-Experimental evidence at protein leveli


Stores iron in a soluble, non-toxic, readily available form. Important for iron homeostasis. Has ferroxidase activity. Iron is taken up in the ferrous form and deposited as ferric hydroxides after oxidation (By similarity).By similarity


On the 2D-gel the determined pI of this protein is: 4.74, its MW is: 25.7 kDa.Curated

Catalytic activityi

4 Fe2+ + 4 H+ + O2 = 4 Fe3+ + 2 H2O.

GO - Molecular functioni

GO - Biological processi


Molecular functionOxidoreductase
Biological processIron storage
LigandIron, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Ferritin-2, chloroplastic (EC:
OrganismiPisum sativum (Garden pea)Curated
Taxonomic identifieri3888 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsfabidsFabalesFabaceaePapilionoideaeFabeaePisum

Subcellular locationi

  • Plastidchloroplast inner membrane 1 Publication

  • Note: And other plastids.

GO - Cellular componenti

Keywords - Cellular componenti

Chloroplast, Membrane, Plastid, Plastid inner membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00002010841 – ›13Ferritin-2, chloroplasticAdd BLAST›13


Tissue specificityi

Leaves.Curated1 Publication


Subunit structurei

Oligomer of 24 subunits. There are two types of subunits: L (light) chain and H (heavy) chain. The major chain can be light or heavy, depending on the species and tissue type. The functional molecule forms a roughly spherical shell with a diameter of 12 nm and contains a central cavity into which the insoluble mineral iron core is deposited (By similarity).By similarity

Family & Domainsi

Sequence similaritiesi

Belongs to the ferritin family.Curated


Sequence statusi: Fragment.

Mass (Da):1,246
Last modified:October 1, 2002 - v1

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Non-terminal residuei13Curated1

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.

Entry informationi

Entry nameiFRI2_PEA
AccessioniPrimary (citable) accession number: P83445
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 1, 2002
Last sequence update: October 1, 2002
Last modified: January 7, 2015
This is version 46 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program


Keywords - Technical termi

Direct protein sequencing


  1. SIMILARITY comments
    Index of protein domains and families