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Updated: Sep 17, 2025

Purification of the Sarco-Endoplasmic Reticulum Ca2+-ATPase from Rabbit Muscle
Published on: March 21, 2025
Identification, Characterization, and Processing-Induced Structural Changes of Linear Epitopes in Sarcoplasmic
Wenye Zhu1, Yuhao Huang1, Hao Wang1
1State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, Huangdao Campus, No.1299, Sansha Road, Qingdao, Shandong Province 266000, PR China.
None:
Limited research on epitopes restricts further investigation and application of the sarcoplasmic calcium binding proteins (SCP). In this study, linear epitopes in Portunus trituberculatus SCP (Por t 4) were identified and compared with different SCPs. Variations in Por 4 epitopes under different conditions were analyzed through molecular simulations, proteomics, and ELISA. Linear IgE and IgG epitopes were identified and optimized, ultimately yielding the epitope P1-P7. Asp, Lys, Glu, and Gly were selected as potential key amino acids in the epitopes. The P7 region (AA170-185) exhibited the lowest root-mean-square fluctuation under varying conditions, no binding site for maltose or fatty acids, and a thermally stable peptide (AA170-179). Further, the P7 antibody displayed more stable binding capacity to SCP before and after processing, but P4 (AA124-141) was significantly affected. These findings offered theoretical support for crustacean allergen detection, allergy diagnosis, and immunotherapy.
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