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半調(diào)子梅花鐵蟲(chóng) (初入文壇)
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[交流]
apolipoprotein b 的分子量是多少?
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鐵蟲(chóng) (初入文壇)
金蟲(chóng) (正式寫手)
| Human apoB-100 is a glycoprotein with a molecular mass of about 550 kDa, consisting of 4536 amino acid residues. Both ApoB-48 and ApoB-100 are coded by APOB and by a single mRNA transcript larger than 16 kb. ApoB-48 is generated when a stop codon (UAA) at residue 2153 is created by RNA editing. As a result of the RNA editing, ApoB-48 and ApoB-100 share a common N-terminal sequence, but ApoB-48 lacks ApoB-100's C-terminal LDL receptor binding region. In fact, ApoB-48 is so called because it constitutes 48% of the sequence for ApoB-100. |
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