Hye Seong Hwang, Heajin Park, Byung Sun Kim, Jaehoon Jeong, Hanbit Hyun, Byung Tae Park, Ho-Young Park, Hee-Don Choi, HaHyung Kim
언어
영어(ENG)
URL
https://www.earticle.net/Article/A212743
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원문정보
초록
영어
Ovotransferrin (OT), a multifunctional glycoprotein with defensive and protective activities, accounts for approximately 13% of chicken egg-white proteins and is known to be a major egg-associated allergen along with ovomucoid (OM). In contrast to the well-characterized N-glycans of OM, the N-glycan structure of OT has not been reported. This study used a high-performance liquid chromatography (HPLC) system equipped with a fluorescence detector and mass spectrometric analysis in combination with exoglycosidase digestion to investigate the N-glycan type and branching pattern of OT, and compared them with those of OM. The HPLC peak area was used to calculate the relative amount of each glycan. Seventeen N-glycans were identified, including 11 glycans (1core structure and 10 complex-type oligosaccharides) that are common to both OT and OM. Six characteristic glycans (two truncated structures, one complex-type oligosaccharide, and three hybrid-type oligosaccharides) in OT and eight characteristic glycans in OM were classified. OT contains the following branched complex-type structures : mono- (13.2%), bi- (23.9%), tri- (9.0%), tetra- (2.7%), and penta- (2.8%) antennary oligosaccharides; whereas OM contains mostly tri- (33.5%) and penta- (31.2%) antennary oligosaccharides. The N-glycan-containing bisecting N-acetylglucosamine comprised 43.4% and 79.8% of the total glycans in OT and OM, respectively. Moreover, circular dichroism analysis revealed that the secondary structure of the deglycosylated OT differs markedly from that of the intact protein. To our knowledge this is the first study to compare N-glycans between OT and OM.
저자
Hye Seong Hwang [ Physical Pharmacy Laboratory, College of Pharmacy, Chung-Ang University ]
Heajin Park [ Physical Pharmacy Laboratory, College of Pharmacy, Chung-Ang University ]
Byung Sun Kim [ Physical Pharmacy Laboratory, College of Pharmacy, Chung-Ang University ]
Jaehoon Jeong [ Physical Pharmacy Laboratory, College of Pharmacy, Chung-Ang University ]
Hanbit Hyun [ Physical Pharmacy Laboratory, College of Pharmacy, Chung-Ang University ]
Byung Tae Park [ Physical Pharmacy Laboratory, College of Pharmacy, Chung-Ang University ]
Ho-Young Park [ Functional Materials Research Group, Korea Food Research Institute, Seongnam, Kyonggi 463-746, Korea ]
Hee-Don Choi [ Functional Materials Research Group, Korea Food Research Institute, Seongnam, Kyonggi 463-746, Korea ]
HaHyung Kim [ Functional Materials Research Group, Korea Food Research Institute, Seongnam, Kyonggi 463-746, Korea ]
본 학회는 화학, 생화학, 분자생물학, 미생물학, 식품공학, 의학, 약학, 유전공학 및 생물공학, 환경 및 기타 공업 등 전 분야의 탄수화물관련 이론과 기술을 연구 발전시키고 산학협동을 통해 이를 보급하여 국내 관련 산업의 발전 및 국민생활의 과학화에 기여하고자 하며, 이러한 목표와 비젼의 실현을 위해 회원들이 적극적인 참여와 활동을 전개하고자 한다.