human_protein_name: stromal cell-derived factor 1 isoform alpha precursor
description: HIV-1 gp120 from a T-cell-tropic virus causes CD4-dependent antagonism of CXCR4 response to SDF-1alpha, whereas gp120 from macrophage-tropic viruses causes CD4-dependent antagonism of CCR5 response to MIP-1alpha
human_protein_sequence: MNAKVVVVLVLVLTALCLSDGKPVSLSYRCPCRFFESHVARANVKHLKILNTPNCALQIVARLKNNNRQVCIDPKLKWIQEYLEKALNK