PMID- 34689550 OWN - NLM STAT- MEDLINE DCOM- 20211104 LR - 20211104 IS - 1520-5118 (Electronic) IS - 0021-8561 (Linking) VI - 69 IP - 43 DP - 2021 Nov 3 TI - Linear Epitopes Play an Important Role in the Immunoglobulin G (IgG)/Immunoglobulin E (IgE)-Binding Capacity of Scy p 4. PG - 12870-12879 LID - 10.1021/acs.jafc.1c05464 [doi] AB - Sarcoplasmic calcium-binding protein is a stable allergen in Scylla paramamosain and named Scy p 4. To explore the importance of linear epitopes in the immunoglobulin G (IgG)/immunoglobulin E (IgE)-binding capacity of Scy p 4, chemical denaturants were used to destroy the structure. Scy p 4 was reduced with dithiothreitol and subsequently alkylated with iodoacetamide (IAA). Furthermore, the structural analysis indicated that IAA-Scy p 4 was an unstructured protein. The inhibition enzyme-linked immunosorbent assay showed that IAA-Scy p 4 could inhibit the binding of Scy p 4 to sensitize serum, with inhibition rates reached 55%. Moreover, the linear mimotopes of Scy p 4 were predicted in silico. Three linear epitopes were verified by serological tests and named L-Scy p 4-1 (AA(76-91)), L-Scy p 4-2 (AA(111-125)), and L-Scy p 4-3 (AA(137-146)). Overall, these data provide an understanding of the relationship between the structure and allergenicity about Scy p 4, and the identified linear epitopes can be used for diagnosis and food processing of shellfish allergy. FAU - Chen, Yi-Yu AU - Chen YY AD - College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Jimei University, Xiamen, Fujian 361021, People's Republic of China. FAU - Li, Meng-Si AU - Li MS AD - College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Jimei University, Xiamen, Fujian 361021, People's Republic of China. FAU - Liu, Meng AU - Liu M AD - College of Marine Biology, Xiamen Ocean Vocational College, Xiamen, Fujian 361102, People's Republic of China. FAU - Yun, Xiao AU - Yun X AD - College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Jimei University, Xiamen, Fujian 361021, People's Republic of China. FAU - Huan, Fei AU - Huan F AD - College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Jimei University, Xiamen, Fujian 361021, People's Republic of China. FAU - Liu, Qing-Mei AU - Liu QM AD - College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Jimei University, Xiamen, Fujian 361021, People's Republic of China. FAU - Cao, Min-Jie AU - Cao MJ AD - College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Jimei University, Xiamen, Fujian 361021, People's Republic of China. FAU - Chen, Gui-Xia AU - Chen GX AD - Women and Children's Hospital Affiliated to Xiamen University, Xiamen, Fujian 361003, People's Republic of China. FAU - Lai, Dong AU - Lai D AD - The Second Affiliated Hospital of Xiamen Medical College, Xiamen, Fujian 361021, People's Republic of China. FAU - Liu, Guang-Ming AU - Liu GM AUID- ORCID: 0000-0002-8689-0504 AD - College of Food and Biological Engineering, Xiamen Key Laboratory of Marine Functional Food, Fujian Provincial Engineering Technology Research Center of Marine Functional Food, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Jimei University, Xiamen, Fujian 361021, People's Republic of China. LA - eng PT - Journal Article DEP - 20211024 PL - United States TA - J Agric Food Chem JT - Journal of agricultural and food chemistry JID - 0374755 RN - 0 (Allergens) RN - 0 (Epitopes) RN - 0 (Immunoglobulin G) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Allergens MH - Epitopes MH - Humans MH - Immunoglobulin E MH - *Immunoglobulin G MH - *Shellfish Hypersensitivity OTO - NOTNLM OT - IgG/IgE-binding capacity OT - denaturation treatment OT - disulfide bonds OT - linear epitopes OT - sarcoplasmic calcium-binding protein EDAT- 2021/10/26 06:00 MHDA- 2021/11/05 06:00 CRDT- 2021/10/25 05:29 PHST- 2021/10/26 06:00 [pubmed] PHST- 2021/11/05 06:00 [medline] PHST- 2021/10/25 05:29 [entrez] AID - 10.1021/acs.jafc.1c05464 [doi] PST - ppublish SO - J Agric Food Chem. 2021 Nov 3;69(43):12870-12879. doi: 10.1021/acs.jafc.1c05464. Epub 2021 Oct 24.