VSHK1|CCR11|CCBP2|CCX-CKR|PPR1|Ccrl1|A630091E18Rik VSHK1 protein coding gene CCBP2 - Ccrl1 PPR1 atypical chemokine receptor 4 http://identifiers.org/mgd/MGI:2181676 CCR11 O A630091E18Rik CCX-CKR genetic mapping Ackr4 MGI:2181676 Gene