P11448 (CYC6_BRYMA) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Cytochrome c6

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

Gene names

Name:

petJ

Organism

Bryopsis maxima (Green alga)

Taxonomic identifier

3129 [NCBI]

Taxonomic lineage

Eukaryota › Viridiplantae › Chlorophyta › Ulvophyceae › Bryopsidales › Bryopsidaceae › Bryopsis

Protein attributes

Sequence length	88 AA.
Sequence status	Complete.
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.
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.
Biophysicochemical properties	Redox potential: E0 is +385 mV.

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 thylakoid lumen Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	electron carrier activity Inferred from electronic annotation. Source: InterPro heme 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 – 88	88	Cytochrome c6		PRO_0000208672
Sites
	Metal binding	19	1	Iron (heme axial ligand)
	Metal binding	61	1	Iron (heme axial ligand)
	Binding site	15	1	Heme (covalent) Ref.1
	Binding site	18	1	Heme (covalent) Ref.1

Sequences

	Sequence		Length	Mass (Da)
	P11448 [UniParc]. Last modified October 1, 1989. Version 1. Checksum: EFDE2C2680175E01	FASTA	88	9,286
	10 20 30 40 50 60 GGDLEIGADV FTGNCAACHA GGANSVEPLK TLNKEDVTKY LDGGLSIEAI TSQVRNGKGA 70 80 MPAWSDRLDD EEIDGVVAYV FKNINEGW

References

[1]	"Studies on algal cytochromes VI: some properties and amino acid sequence of cytochrome c6 from a green alga, Bryopsis maxima." Okamoto Y., Minami Y., Matsubara H., Sugimura Y. J. Biochem. 102:1251-1260(1987) [PubMed: 3481367] [Abstract] Cited for: PROTEIN SEQUENCE, CHARACTERIZATION.
+	Additional computationally mapped references.

Cross-references

Sequence databases
PIR	CCBM6. A30021.
3D structure databases
ProteinModelPortal	P11448.
SMR	P11448. Positions 2-87.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Family and domain databases
InterPro	IPR009056. Cyt_c_dom. IPR003088. Cyt_c_I. IPR008168. Cyt_C_IC. [Graphical view]
Gene3D	G3DSA:1.10.760.10. Cytochrome_c_R. 1 hit.
Pfam	PF00034. Cytochrom_C. 1 hit. [Graphical view]
PRINTS	PR00605. CYTCHROMECIC.
SUPFAM	SSF46626. Cytochrome_c. 1 hit.
PROSITE	PS51007. CYTC. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

CYC6_BRYMA

Accession

Primary (citable) accession number: P11448

Entry history

Integrated into UniProtKB/Swiss-Prot:	October 1, 1989
Last sequence update:	October 1, 1989
Last modified:	October 5, 2010
This is version 69 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Plant Protein Annotation Program