1MZ4: Cytochrome c550

Crystal Structure of Cytochrome c550 from Thermosynechococcus elongatus. Determined by X-ray diffraction at 1.8 Å resolution. Released 23 Sept 2003.

Method
X-ray diffraction
Resolution
1.8 Å
Organism
Thermosynechococcus elongatus
Chains
1
Atoms
1,256
Mol. weight
16.77 kDa
Ligands
HEC, BCT, PO4
Released
23 Sept 2003

Explore 1MZ4 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1MZ4 contains 11 α-helices and 4 β-strands across 1 chain. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 11 helices, 4 β-strands

ElementResiduesLengthSheet
α-helix5-84
β-strand9-1131
β-strand18-2031
α-helix23-3614
α-helix38-414
α-helix42-443
α-helix50-523
α-helix56-605
α-helix69-779
β-strand8012
β-strand8712
α-helix95-973
α-helix102-1043
α-helix109-12618
α-helix127-1293

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
cytochrome c550Aprotein137Thermosynechococcus elongatusP0A386 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>1MZ4_1 cytochrome c550 (chains A)
AELTPEVLTVPLNSEGKTITLTEKQYLEGKRLFQYACASCHVGGITKTNPSLDLRTETLA
LATPPRDNIEGLVDYMKNPTTYDGEQEIAEVHPSLRSADIFPKMRNLTEKDLVAIAGHIL
VEPKILGDKWGGGKVYY

Ligands and cofactors

IDNameFormulaCopies
HECHeme CC34 H36 Fe N4 O41
BCTBicarbonate ionC H O31
PO4Phosphate ionO4 P5

Water and common crystallization additives (GOL) are not listed.

Primary citation

Structural and EPR characterization of the soluble form of cytochrome c-550 and of the psbV2 gene product from the cyanobacterium Thermosynechococcus elongatus. Kerfeld, C.A., Sawaya, M.R., Bottin, H. et al. Plant Cell Physiol (2003) 44:697-706. DOI 10.1093/pcp/pcg084 · PubMed

Other PDB entries of the same protein (UniProt P0A386 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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