PR:000025790	T-cell-specific surface glycoprotein CD28 isoform 1, signal peptide removed phosphorylated 1 (human)	hCD28/iso:1/SigPep-/Phos:1|PRO_0000014652, Tyr-191, MOD:00048|UniProtKB:P10747-1, 19-220, Tyr-191, MOD:00048		located_in	GO:0005886	plasma membrane			Reactome:REACT_20178	EXP	NCBITaxon:9606		UniProtKB:P10747-1	20100718	PRO:CNA