The nucleotide (nt) sequence encoding a 27-kDa heat-shock protein (HSP
27) was determined from cDNAs cloned from a canine smooth muscle libra
ry. The primary structure deduced from the nt sequence reveals a 209-a
mino-acid protein having 86-89% identity with human, mouse, rat and ha
mster small HSP. Similar to human HSP27, the canine protein contains t
hree Ser residues that are potential MAPKAP kinase II substrates.