Which genus is known for its oxidase-negative, nonmotile characteristics?

The genus Acinetobacter is recognized for its oxidase-negative and nonmotile characteristics. This group of bacteria is clinically significant, particularly in healthcare settings, as it can cause a variety of infections, especially in immunocompromised patients. The oxidase test is important for differentiating bacterial species, and Acinetobacter does not produce the enzyme cytochrome c oxidase, leading to a negative reaction. Additionally, members of this genus are generally nonmotile, meaning they do not possess flagella for movement. This sets them apart from other genera, such as Pseudomonas, which is known for being oxidase-positive and motile. Understanding these characteristics is crucial for microbiologists in identifying and classifying bacteria in laboratory settings.