The enzyme neuraminidase consists of a ring of __ identical protein subunits.
举一反三
- Which of the following statement about RNA polymerase in prokaryotes is correct: A: Holoenzyme is composed of five subunits (ααββ′σ) B: Any subunit of holoenzyme cannot bind to DNA separately in vivo C: Core enzyme consists of five subunits(ααββ′ω) D: σ factor helps RNA polymerase to recognize promoter
- The following belong to the protein classification is ( ). A: toxin B: enzyme C: antibiotic D: structural protein
- Which of the<br/>following statement about RNA polymerase in prokaryotes is<br/>correct:() A: Holoenzyme is composed of five subunits (ααββ′σ) B: Any subunit of<br/>holoenzyme cannot bind to DNA separately in vivo. C: Core enzyme<br/>consists of five subunits(ααββ′ω) D: σ factor can<br/>catalyze the synthesis of RNA E: σ factor<br/>helps RNA polymerase to recognize promoter
- Which structure is not secondary structure of the protein？（） A: α-helix B: β- fold C: β- Angle D: subunits
- Most solid materials are ( ) A: Crystal B: Enzyme C: Protein D: Quasicrystal