인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
LPS is essential in most Gram-negative bacteria, but mutants of several species have been isolated that can survive in its absence. Caulobacter crescentus viability in the absence of LPS is partially dependent on the anionic sphingolipid ceramide diphosphoglycerate (CPG2). Genetic analyses showed that ccna_01210, which encodes a nucleotidyltransferase, is required for CPG2 production. Using purified recombinant protein, we determined that CCNA_01210 (CpgD) is a phosphoglycerate cytidylyltransferase that uses CTP and phosphoglycerate to produce CDP-glycerate, which we hypothesize is the phosphoglycerate donor for CPG2 synthesis. CpgD had optimum activity at pH 7.5 to 8 in the presence of magnesium. CpgD exhibited Michaelis-Menten kinetics concerning 3-phosphoglycerate, D-2-phosphoglycerate, and L-2-phosphoglycerate. By contrast, CTP followed Michaelis-Menten kinetics in the presence of 3-phosphoglycerate and L-2-phosphoglycerate but exhibited cooperativity with D-2-phosphoglycerate. Overall, D-2-phosphoglycerate was the preferred substrate in vitro. The characterization of this enzyme uncovers another step in the pathway toward CPG2 synthesis.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.