Reviewed, UniProtKB/Swiss-Prot P00107 (CYC6_PAVLU)

Names and origin

Protein names

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

Gene names

Name:

petJ

Organism

Pavlova lutherii (Monochrysis lutheri)

Taxonomic identifier

2832 [NCBI]

Taxonomic lineage

Eukaryota › Haptophyceae › Pavlovales › Pavlovaceae › Pavlova

Protein attributes

Sequence length	83 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. 50% of the molecules were found to be monomethylated at Lys-24.
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
PTM	Methylation
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 – 83	83	Cytochrome c6		PRO_0000208678
Sites
	Metal binding	18	1	Iron (heme axial ligand)
	Metal binding	59	1	Iron (heme axial ligand)
	Binding site	14	1	Heme (covalent) Ref.1
	Binding site	17	1	Heme (covalent) Ref.1
Amino acid modifications
	Modified residue	24	1	N6-methyllysine; partial

Sequences

	Sequence		Length	Mass (Da)
	P00107-1 [UniParc]. Last modified July 21, 1986. Version 1. Checksum: CBCDCDEE026A9C64	FASTA	83	8,816
	10 20 30 40 50 60 GDIANGEQVF TGNCAACHSV ZZZKTLELSS LWKAKSYLAN FNGDESAIVY QVTNGKNAMP 70 80 AFGGRLEDDE IANVASYVLS KAG

References

[1]	"The amino acid sequence of cytochrome c-553 from the Chrysophycean alga Monochrysis lutheri." Laycock M.V. Can. J. Biochem. 50:1311-1325(1972) [PubMed: 4345913] [Abstract] Cited for: PROTEIN SEQUENCE.
[2]	Laycock M.V. Submitted (DEC-1974) to the PIR data bank Cited for: SEQUENCE REVISION TO 2; 5; 7; 13 AND 73.

Cross-references

Sequence databases
PIR	CCML6. A00099.
3D structure databases
HSSP	HSSP built from PDB template 1KIB based on UniProtKB P00118.
ModBase	Search...
Family and domain databases
InterPro	IPR003088. Cyt_c_I. IPR008168. Cyt_C_IC. IPR009056. Cyt_c_monohaem. [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_PAVLU

Accession

Primary (citable) accession number: P00107

Entry history

Integrated into UniProtKB/Swiss-Prot:	July 21, 1986
Last sequence update:	July 21, 1986
Last modified:	June 16, 2009
This is version 63 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)