Table 2. Differential characteristics of Collinsella massiliensis strain GD3^T with other strains.

Properties	C. massiliensis	C. intestinalis	C. aerofaciens	C. tanakei	C. stercoris
Cell diameter (µm)	0.57	0.3-0.5	0.3-0.7	0.5-1.0	0.3-0.5
Oxygen requirement	anaerobic	anaerobic	anaerobic	anaerobic	anaerobic
Gram stain	+	+	+	+	+
Motility	-	-	na	-	-
Endospore formation	-	-	-	na	-
Production of
Alkaline phosphatase	+	+	-	+	+
Acid phosphatase	+	+	-	+	+
Catalase	-	na	na	-	na
Oxidase	-	na	na	-	na
Nitrate reductase	-	na	na	-	na
Urease	-	na	-	-	na
α-galactosidase	+	-	+	-	-
β-galactosidase	+	-	+	-	+
β-glucuronidase	-	-	-	+	-
α -glucosidase	+	-	+	-	-
β-glucosidase	-	-	-	+	+
Esterase	-	na	-	-	na
Esterase lipase	-	-	-	-	-
Indole	-	na	na	-	na
N-acetyl-β-glucosaminidase	-	+	-	-	+
Alanine arylamidase	-	na	-	-	+
Arginine arylamidase	-	na	+	+	na
Cystin arylamidase	-	-	-	-	-
Glutamic acid decarboxylase	-	na	-	-	na
Glycine arylamidase	+	na	+	+	na
Leucine arylamidase	-	+	+	+	+
Leucyl-glycyl arylamidase	-	na	+	+	na
Proline arylamidase	+	-	+	+	-
Serine arylamidase	+	na	-	-	+
Tyrosin arylamidase	-	na	-	-	+
Valine arylamidase	-	-	+	-	-
Utilization of
Glucose	-	+	+	+	+
Mannose	-	+	+	+	+
Galactose	-	+	+	na	+
Fructose	-	+	+	na	+
Maltose	-	-	+	+	+
Cellobiose	-	-	-	+	+
Lactose	-	-	+	+	+
L-arabinose	-	-	-	-	-
D-xylose	-	-	-	-	-
Rhamnose	-	-	na	-	-
Ribose	-	-	+	+	+
Raffinose	-	-	na	na	-
Glycogen	-	-	na	na	-
Aesculin	-	-	-	-	-
Mannitol	-	-	-	na	-
Sorbitol	+	-	-	-	-
Habitat	human gut	human gut	human gut	human gut	na

na: data not available

+/-: depending on tests used