T-cell surface glycoprotein CD8 beta chain, signal peptide removed form T-cell surface glycoprotein CD8 beta chain isoform 1 T-cell surface glycoprotein CD8 beta chain isoform 1, signal peptide removed form A T-cell surface glycoprotein CD8 beta chain isoform 1 that has had the signal peptide removed to yield the mature form. protein Category=modification. CD8B/iso:1/SigPep- PR:000025407