H-Arg-Gly-Tyr-Ala-Leu-Gly-OH is a competitive and CAMP dependent protein kinase inhibitor[1].
References
[1] Kemp BE, et al. Synthetic hexapeptide substrates and inhibitors of 3':5'-cyclic AMP-dependent protein kinase. Proc Natl Acad Sci U S A. 1976 Apr;73(4):1038-42. DOI:10.1073/pnas.73.4.1038
