LFA-1 has two subunits designated as the alpha subunit and beta subunit. NatA is composed of two subunits, the catalytic subunit Naa10 and the auxiliary subunit Naa15. MAPK can also regulate translation by phosphorylating the S6 kinase in the large ribosomal subunit. Resistance-conferring mutations of the 50S ribosomal subunit are rare. It binds to the 30S subunit of the bacterial ribosome. The main phosphatase function is performed by the glucose 6-phosphatase catalytic subunit. A eukaryotic SSU contains the 18S rRNA subunit, which also contains ESs. The CHRNE gene codes for the epsilon subunit of the AChR. The nucleosome is the fundamental subunit of chromatin. Efalizumab is a monoclonal antibody that specifically targets the CD11a subunit of LFA-1. Tetracycline binds to the 30S and 50S subunit of microbial ribosomes. It does this by binding to the 40S subunit of the ribosome. The light strand encodes one subunit, and 8 tRNAs. The gene for the "alpha subunit" is located on chromosome 6q12.21. A special subfamily of ABC2 importers called ECF use a separate subunit for substrate recognition.