Distribution, Typical Structure and Self-Assembly Properties of Collagen from Fish Skin and Bone

被引：8
作者：
Zhang, Xuening [1 ]
Wang, Jie [1 ]
Zhang, Qian [1 ]
Fan, Yan [2 ]
Zhang, Hongwei [3 ]
Ahmad, Khurshid [1 ]
Hou, Hu [1 ,4 ,5 ,6 ]
机构：
[1] Ocean Univ China, Coll Food Sci & Engn, Sansha Rd, Qingdao 266404, Peoples R China
[2] Ocean Univ China, Coll Marine Life Sci, Yushan Rd, Qingdao 266003, Peoples R China
[3] Technol Ctr Qingdao Customs, Xinyue Rd, Qingdao 266109, Peoples R China
[4] Laoshan Lab, Lab Marine Drugs & Bioprod, Qingdao 266237, Peoples R China
[5] Ocean Univ China, Sanya Oceanog Inst, Sanya 572024, Peoples R China
[6] Qingdao Inst Marine Bioresources Nutr & Hlth Innov, Qingdao 266000, Peoples R China
来源：
MOLECULES | 2023年 / 28卷 / 18期
关键词：
collagen; self-assembly; unique peptide; structure; ACID-SOLUBLE COLLAGEN; IN-VITRO; IDENTIFICATION; PH;
D O I：
10.3390/molecules28186529
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The source and type of collagen are crucial to its application, and both play a decisive role. Collagen was prepared from both tilapia skin and bone and skate skin and cartilage, named as CI-TI-s, CI-TI-b, CI-SK-s, and CII-SK-c, respectively. Types, distributions, structures, and self-assembly of collagen were studied. It showed that yellow collagen fibers from skin arranged longitudinally, while collagen fibers from skate cartilages displayed varying colors. CI-TI-s, CI-TI-b, CI-SK-s, and CII-SK-c showed the typical amide A (3316-3336 cm-1) and amide B (2929-2948 cm-1) in FTIR spectra. CI-TI-b and CII-SK-c showed 218-229 nm of UV absorption, 11.56-12.20 angstrom of d values in XRD, and 0.12-0.14 of Rpn values in CD. The thermal denaturation temperatures of CI-TI-s and CI-SK-s were 30.7 and 20.6 degrees C, respectively. The self-assembly of CI-TI-s and CII-SK-c were maximum at pH 7.2 and 7.4-7.6, respectively. The unique collagen peptides of tilapia and skate were GPSGPQGAVGATGPK, PAMPVPGPMGPMGPR, SPAMPVPGPMGPMGPR, GESGPSGPAGPAGPAGVR, SSGPPVPGPIGPMGPR, GLTGPIGVPGPPGAQGEK, GLAGPQGPR, and GLSGDPGVQGIK, respectively. The unique peptides of type I and type II collagen were GPTGEIGATGLAGAR, GVLGLTGMR, LGLTGMR, GEPGAAGPAGPSGPMGPR, SSGPPVPGPIGPMGPR, and GLSGDPGVQGIK, respectively.
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页数：14
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