Question:medium

Transport of molecules smaller than about 600 daltons across the outer membrane of bacteria is facilitated by trimeric integral membrane proteins called:

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Remember:
• Porins \(\rightarrow\) Channel proteins in gram-negative outer membrane
• ABC transporters \(\rightarrow\) ATP-driven active transport
• Siderophores \(\rightarrow\) Iron acquisition molecules \[ \text{Porins enable passive diffusion of small hydrophilic molecules} \]

Updated On: Jun 6, 2026

Siderophores
ABC transporters
Porins
Hopanoids

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The Correct Option is C

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List - I		List – II
A.	Streptococcus	i.	Citric acid
B.	Trichoderma polysporum	ii.	Clot buster
C.	Monascus purpureus	iii.	Cyclosporin A
D.	Aspergillus niger	iv.	Statins

Transport of molecules smaller than about 600 daltons across the outer membrane of bacteria is facilitated by trimeric integral membrane proteins called:

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The Correct Option is C

Solution and Explanation

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