Fam20C structure model highlights residues critical for protein kinase activity.
(A) The closest structure
template [PDB ID: 2akl] to Fam20C is depicted in cartoon. The HHPRED alignment extends over a
significant portion of the atypical protein kinase fold (pink) and includes the ATP-binding P-loop (cyan)
and the catalytic loop (red). The confidently mapped sequence surrounds the active site highlighted by
an ATP analog in stick with two magnesium ions (green). Conserved functional residues are depicted in
stick (black). (B) A Fam20C structure model was generated using the template depicted in (A) using
SWISS-MODEL. The ATP analog from the template structure highlights the active site, with conserved
Fam20C residues shown in stick. D478 (magenta) is predicted to coordinate manganese (green),
analogous to magnesium bound in the template.