Alternative sequence (4); Chain (1); Domain (2); Glycosylation (1); Lipidation (1); Mass spectrometry (1); Natural variant (9); Propeptide (1); Sequence conflict (4); Signal peptide (1); Expressed in neonatal and adult neutrophils. {ECO:0000269|PubMed:18462208}.; By CSF3/G-CSF in resting granulocytes (PubMed:10753836). Induced during CSF3/G-CSF-mediated neutrophil differentiation (PubMed:17244676, PubMed:18462208). Induced during pregnancy (PubMed:12675722). Induced in patients with polycythemia vera (PV) and with essential thrombocythemia (ET) (PubMed:10753836, PubMed:12377969). {ECO:0000269|PubMed:10753836, ECO:0000269|PubMed:12377969, ECO:0000269|PubMed:12675722, ECO:0000269|PubMed:17244676, ECO:0000269|PubMed:18462208}.; Highly expressed in normal bone marrow and weakly expressed in fetal liver (PubMed:10753836). During neutrophil differentiation, expression begins at the metamyelocyte stage and continues throughout the subsequent stages (at protein level) (PubMed:17244676, PubMed:18462208, PubMed:24926686). Expressed by a subset of mature neutrophils (at protein level) (PubMed:10753836, PubMed:28240246, PubMed:12377969, PubMed:18462208, PubMed:12675722, PubMed:17244676, PubMed:17580308, PubMed:21193407, PubMed:24926686, PubMed:28807980, PubMed:27227454). The percentage of neutrophils expressing CD177 varies across the population (PubMed:17244676, PubMed:27227454). Expressed in granulocytes of patients with polycythemia vera (PV) and with essential thrombocythemia (ET) (PubMed:10753836, PubMed:12377969). {ECO:0000269|PubMed:10753836, ECO:0000269|PubMed:12377969, ECO:0000269|PubMed:12675722, ECO:0000269|PubMed:17244676, ECO:0000269|PubMed:17580308, ECO:0000269|PubMed:18462208, ECO:0000269|PubMed:21193407, ECO:0000269|PubMed:27227454, ECO:0000269|PubMed:28240246, ECO:0000269|PubMed:28807980}.