Synthetic, structural and biological studies of the ubiquitin system: the total chemical synthesis of ubiquitin
Keyword(s):
The small protein ubiquitin (76 amino acids) has been synthesized under optimized conditions by Merrifield solid-phase methodology using the N alpha-Fmoc protecting group. The crude polypeptide mixture was purified to homogeneity by gel filtration, dialysis and a combination of cation- and anion-exchange chromatography to yield ubiquitin. Amino acid analysis, enzymic digestion and sequencing by automated Edman degradation were used to authenticate the primary structure. Isoelectric focusing and m.s. were used to demonstrate that the final product was greater than 98% pure with a final yield of 93 mg (4.3%) from a single synthesis on a 0.25 nmol scale.
Synthesis of hepatitis B surface antigen pre-S2 region fragments and studies on their immunogenicity
1988 ◽
Vol 53
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pp. 2952-2956
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1968 ◽
Vol 243
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pp. 1065-1072
2002 ◽
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pp. 884-890
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2013 ◽
pp. 235-249
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1977 ◽
1989 ◽
Vol 26
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pp. 169-171
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1989 ◽
Vol 49
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pp. 464-470
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1980 ◽
Vol 33
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pp. 279
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