Nomenclature	XCR1	ACKR1	ACKR2	ACKR3	ACKR4	CCRL2
HGNC, UniProt	XCR1, P46094	ACKR1, Q16570	ACKR2, O00590	ACKR3, P25106	ACKR4, Q9NPB9	CCRL2, O00421
Endogenous ligands	–	CXCL5 (CXCL5, P42830), CXCL6 (CXCL6, P80162), CXCL8 (CXCL8, P10145), CXCL11 (CXCL11, O14625), CCL2 (CCL2, P13500), CCL5 (CCL5, P13501), CCL7 (CCL7, P80098), CCL11 (CCL11, P51671), CCL14 (CCL14, Q16627), CCL17 (CCL17, Q92583)	–	–	–	chemerin C‐terminal peptide, CCL19 (CCL19, Q99731) [101]
Endogenous agonists	XCL1 (XCL1, P47992) [564], XCL2 (XCL2, Q9UBD3) [564]	–	CCL2 (CCL2, P13500), CCL3 (CCL3, P10147), CCL4 (CCL4, P13236), CCL5 (CCL5, P13501), CCL7 (CCL7, P80098), CCL8 (CCL8, P80075), CCL11 (CCL11, P51671), CCL13 (CCL13, Q99616), CCL14 (CCL14, Q16627), CCL17 (CCL17, Q92583), CCL22 (CCL22, O00626)	CXCL12 α (CXCL12, P48061) [674, 1854], CXCL11 (CXCL11, O14625)	CCL19 (CCL19, Q99731) [2085], CCL25 (CCL25, O15444) [2085], CCL21 (CCL21, O00585) [2085]	–
Comments	XCL1 cannot be iodinated, but a secreted alkaline phophatase (SEAP)‐XCL1 fusion peptide can be used as a probe at XCR1.	ACKR1 is used by Plasmodium vivax and Plasmodium knowlsei for entering erythrocytes.	–	Several lines of evidence have suggested that adrenomedullin is a ligand for ACKR3; however, classical direct binding to the receptor has not yet been convincingly demonstrated.	–	–