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분야
ppt2.기질수준인산화, 산화적인산화
3.호흡과 막 관련 전자전달자
전달과정에 관련된 산화-환원 효소
1) NADH dehydrogenases
2) 플라보단백질 (flavoproteins)
3) 철-황 단백질(iron-sulfur proteins)
4) 시토크롬 (cytochromes
5) 퀴논(quinine)
1) 양성자 동력의 형성
2) 양성자 동력의 발생 : 복합체 Ⅰ․Ⅱ
3) 복합체Ⅲ와 Ⅳ
4) ATPase, 양성자 동력,
5) ATPase의 가역성
6) 저해제와 짝풀림 물질
4) 시토크롬 (cytochromes)
- 철을 함유하는
포르피린고리 보결분자단
(heme)이 연결된 단백질
- 시토크롬 c의 구조
- 환원 전위가 다른 여러 종류의 시토크롬이 있다.
시토크롬 c의 3차원 모형.
중앙에 heme이
위치하고 있다.
5) 퀴논(quinine)
- 높은 소수성의 비단백질
- 일부 퀴논은 고등동물의 생장인자인 비타민K 와 관련
- 퀴논의 구조
전자전달 과정 동안 산화적 인산화 과정을 통해 ATP 합성
ATP의 합성- 양성자동력(proton motive force)형성과 연결.
F₀의 소단위를 통한 양성자 운동
: c단백질의 회전을 이끎
F₀는 β 소단위의 구조적인 변화를 가져옴
F₁의 b2δ 소단위의 기능
: 고정자로써 작용
→ α, β소단위가 γε과 같이 회전하는 것을 막음
