Abstract: The present invention relates to a hemostatic elastin-like polypeptide comprising a glutamine embedded in a Q-block sequence and, optionally, a lysine embedded in a K-block sequence. Under physiological setting, the Q-block sequence and the K-block sequence are recognized by human transglutaminase factor XIIIa and crosslinked with fibrin networks. The present invention also relates to the medical use of the polypeptide, to a nucleic acid sequence encoding the polypeptide, to an expression vector comprising the nucleic acid sequence, and to a cell comprising the nucleic acid sequence or the expression vector.