Reviewed, UniProtKB/Swiss-Prot P00119 (CYC6_EUGGR)

Names and origin

Protein names

Recommended name:
    Cytochrome c6
Alternative name(s):
    Soluble cytochrome f
    Cytochrome c-553
    Cytochrome c553
    Cytochrome c-552

Gene names

Name:

petJ

Organism

Euglena gracilis

Taxonomic identifier

3039 [NCBI]

Taxonomic lineage

Eukaryota › Euglenozoa › Euglenida › Euglenales › Euglena

Protein attributes

Sequence length	87 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Evidence at protein level.

General annotation (Comments)

Function	Functions as an electron carrier between membrane-bound cytochrome b6-f and photosystem I in oxygenic photosynthesis.
Subunit structure	Monomer By similarity.
Subcellular location	Plastid › chloroplast thylakoid lumen.
Post-translational modification	Binds 1 heme group per subunit.
Sequence similarities	Belongs to the cytochrome c family. PetJ subfamily.

Ontologies

Keywords
Biological process	Electron transport Photosynthesis Transport
Cellular component	Chloroplast Plastid Thylakoid
Ligand	Heme Iron Metal-binding
Technical term	Direct protein sequencing
Gene Ontology (GO)
Biological process	electron transport chain Inferred from electronic annotation. Source: UniProtKB-KW photosynthesis Inferred from electronic annotation. Source: UniProtKB-KW transport Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	chloroplast Inferred from electronic annotation. Source: UniProtKB-KW thylakoid Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	electron carrier activity Inferred from electronic annotation. Source: InterPro heme binding Inferred from electronic annotation. Source: InterPro iron ion binding Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 87	87	Cytochrome c6		PRO_0000208675
Sites
	Metal binding	14	1	Iron (heme axial ligand)
	Metal binding	56	1	Iron (heme axial ligand)
	Binding site	10	1	Heme (covalent)
	Binding site	13	1	Heme (covalent)

Sequences

	Sequence		Length	Mass (Da)
	P00119-1 [UniParc]. Last modified July 21, 1986. Version 1. Checksum: B91A9E2FB6D72868	FASTA	87	9,117
	10 20 30 40 50 60 GGADVFADNC STCHVNGGNV ISAGKVLSKT AIEEYLDGGY TKEAIEYQVR NGKGPMPAWE 70 80 GVLSEDEIVA VTDYVYTQAG GAWANVS

References

[1]	"The purification and amino acid sequence of cytochrome C-552 from Euglena gracilis." Pettigrew G.W. Biochem. J. 139:449-459(1974) [PubMed: 4374934] [Abstract] Cited for: PROTEIN SEQUENCE.

Cross-references

Sequence databases
PIR	CCEG6. A00111.
3D structure databases
HSSP	HSSP built from PDB template 1LS9 based on UniProtKB P83391.
ModBase	Search...
Family and domain databases
InterPro	IPR009056. Cyt_c_monohaem. IPR003088. Cyt_CI. IPR008168. Cyt_CIC. [Graphical view]
Gene3D	G3DSA:1.10.760.10. Cytochrome_c_R. 1 hit.
Pfam	PF00034. Cytochrom_C. 1 hit. [Graphical view]
PRINTS	PR00605. CYTCHROMECIC.
PROSITE	PS51007. CYTC. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

CYC6_EUGGR

Accession

Primary (citable) accession number: P00119

Entry history

Integrated into UniProtKB/Swiss-Prot:	July 21, 1986
Last sequence update:	July 21, 1986
Last modified:	November 25, 2008
This is version 54 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)