AK1 (Adenylate Kinase 1) plays crucial roles in processes such as cellular phosphotransfer networks, neuronal maturation and regeneration, gating of ABC transporter CFTR, tumor cell metabolism and myocardial energetic homeostasis. Here we report (1)H, (15)N and (13)C backbone and side-chain resonance assignments of the human AK1 protein in apo form. This work lays the essential basis for the further structure determination of hAK1.