Reviewed, UniProtKB/Swiss-Prot P85348 (PER3_CYCRE)

Names and origin

Protein names	Recommended name:     Peroxidase 3     EC=1.11.1.7
Organism	Cycas revoluta (Sago palm)
Taxonomic identifier	3396 [NCBI]
Taxonomic lineage	Eukaryota › Viridiplantae › Streptophyta › Embryophyta › Tracheophyta › Spermatophyta › Cycadophyta › Cycadales › Cycadaceae › Cycas

Protein attributes

Sequence length	15 AA.
Sequence status	Fragment.
Sequence processing	The displayed sequence is not processed.
Protein existence	Evidence at protein level.

General annotation (Comments)

Function	Removal of H(2)O(2), oxidation of toxic reductants, biosynthesis and degradation of lignin, suberization, auxin catabolism, response to environmental stresses such as wounding, pathogen attack and oxidative stress. These functions might be dependent on each isozyme/isoform in each plant tissue.
Catalytic activity	Donor + H(2)O(2) = oxidized donor + 2 H(2)O.
Cofactor	Binds 2 calcium ions per subunit By similarity. Binds 1 heme B (iron-protoporphyrin IX) group per subunit By similarity.
Subcellular location	SecretedBy similarity.
Sequence similarities	Belongs to the peroxidase family. Classical plant (class III) peroxidase subfamily.

Ontologies

Keywords
Biological process	Hydrogen peroxide
Cellular component	Secreted
Ligand	Calcium Heme Iron Metal-binding
Molecular function	Oxidoreductase Peroxidase
Technical term	Direct protein sequencing
Gene Ontology (GO)
Biological process	hydrogen peroxide catabolic process Inferred from electronic annotation. Source: UniProtKB-KW oxidation reduction Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	extracellular region Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	calcium ion binding Inferred from electronic annotation. Source: UniProtKB-KW iron ion binding Inferred from electronic annotation. Source: UniProtKB-KW peroxidase activity Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	‹1 – ›15	›15	Peroxidase 3		PRO_0000315885
Experimental info
	Non-terminal residue	1	1
	Non-terminal residue	15	1

Sequences

	Sequence		Length	Mass (Da)
	P85348-1 [UniParc]. Last modified January 15, 2008. Version 1. Checksum: 9E3E89B04B277C58	FASTA	15	1,603
	10 MGQLNVLTGS KGEIR

References

[1]	Novo Uzal E., Gomez Ros L.V., Ros Barcelo A. Submitted (NOV-2007) to UniProtKB Cited for: PROTEIN SEQUENCE. Tissue: Callus.

Cross-references

3D structure databases
ModBase	Search...
Family and domain databases
InterPro	IPR002016. Haem_peroxidase_pln/fun/bac. [Graphical view]
PROSITE	PS00435. PEROXIDASE_1. Partial match. PS00436. PEROXIDASE_2. Partial match. PS50873. PEROXIDASE_4. Partial match. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

PER3_CYCRE

Accession

Primary (citable) accession number: P85348

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 15, 2008
Last sequence update:	January 15, 2008
Last modified:	November 4, 2008
This is version 3 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

PPAP (Plant Proteome Annotation Project)