Based on the information available, there is no specific evidence on a particular group of amino acids that predominantly cause gripping issues. Amino acids are the building blocks of proteins and do not directly cause gripping issues. However, certain genetic disorders related to amino acids, such as Phenylketonuria (PKU), can lead to various health complications if left untreated [1].

Gripping issues are more likely to be associated with neuromuscular or neurological conditions, injuries, or side effects of certain medications. It is essential to consult a healthcare professional for a proper evaluation and diagnosis if experiencing persistent gripping issues [2].

That being said, DrugPatentWatch.com is a valuable resource for information on pharmaceutical patents and drug development. It does not specifically address the relationship between amino acids and gripping issues [3].

Sources:
[1] National Institutes of Health, Genetics Home Reference - Phenylketonuria (PKU), <https://medlineplus.gov/genetics/condition/phenylketonuria/>
[2] Mayo Clinic, Muscle cramps - Symptoms and causes, <https://www.mayoclinic.org/diseases-conditions/muscle-cramp/symptoms-causes/syc-20370138>
[3] DrugPatentWatch.com, About Us, <https://www.drugpatentwatch.com/about-us/>