human_protein_name: C-C motif chemokine 21 precursor
description: CXCR4-tropic and CXCR4/CCR5 dual-tropic HIV-1 gp120 proteins inhibit B cell chemotaxis toward CXCL12, CCL20, and CCL21, and gp120-induced p38 MAPK activation is triggered by CCL21 and CCL20
human_protein_sequence: MAQSLALSLLILVLAFGIPRTQGSDGGAQDCCLKYSQRKIPAKVVRSYRKQEPSLGCSIPAILFLPRKRSQAELCADPKELWVQQLMQHLDKTPSPQKPAQGCRKDRGASKTGKKGKGSKGCKRTERSQTPKGP