1K9P: Calcium free (or apo) human S100A6

Crystal structure of calcium free (or apo) human S100A6. Determined by X-ray diffraction at 1.9 Å resolution. Released 10 Apr 2002.

Method
X-ray diffraction
Resolution
1.9 Å
Organism
Homo sapiens
Chains
1
Atoms
791
Mol. weight
10.27 kDa
Released
10 Apr 2002

Explore 1K9P in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1K9P contains 5 α-helices and 2 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: 5 helices, 2 β-strands

ElementResiduesLengthSheet
α-helix4-2017
β-strand28-3031
α-helix31-4111
α-helix51-6212
β-strand67-6931
α-helix70-8415
α-helix86-883

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
S100A6Aprotein90Homo sapiensP06703 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>1K9P_1 S100A6 (chains A)
MACPLDQAIGLLVAIFHKYSGREGDKHTLSKKELKELIQKELTIGSKLQDAEIARLMEDL
DRNKDQEVNFQEYVTFLGALALIYNEALKG

Primary citation

Crystal structures of S100A6 in the Ca(2+)-free and Ca(2+)-bound states: the calcium sensor mechanism of S100 proteins revealed at atomic resolution. Otterbein, L.R., Kordowska, J., Witte-Hoffmann, C. et al. Structure (2002) 10:557-567. DOI 10.1016/S0969-2126(02)00740-2 · PubMed

Other PDB entries of the same protein (UniProt P06703 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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