PTK

PTK is an acronym that can refer to several different terms across fields. Its meaning is highly dependent on context, and it appears in science, education, and various organizational names.

In biology and medicine, PTK stands for protein tyrosine kinase, a class of enzymes that catalyze the transfer of a phosphate group to tyrosine residues on substrate proteins. PTKs are central to many signaling pathways that regulate cell growth, differentiation, and metabolism. They are categorized as receptor tyrosine kinases (RTKs), which span the cell membrane, and non-receptor tyrosine kinases, which function inside the cell. Abnormal PTK activity or mutations can contribute to diseases such as cancer, and drugs known as tyrosine kinase inhibitors are used in targeted therapies.

In Indonesia, PTK refers to Pendidikan Teknik dan Kejuruan, or Technical and Vocational Education. This sector covers vocational schools and programs designed to prepare students for skilled work in industry and services. PTK emphasizes practical training, industry partnerships, and pathways that link secondary education with higher education or direct employment. Policy discussions around PTK often focus on curriculum relevance, dual training, and alignment with labor market needs.

Other uses of PTK exist and can vary by country or organization, including program names, institutional acronyms, or product designations. Because PTK has multiple possible meanings, determining the intended sense requires examining the surrounding context.