What question did this study set out to answer?

To determine the primary amino acid sequence of goat alpha s1-casein variants D, E, and F and identify the molecular alterations associated with their reduced synthesis in milk.

October 1, 1990European Journal of Biochemistry

Two of the three genetic variants of goat αs1‐casein which are synthesized at a reduced level have an internal deletion possibly due to altered RNA splicing

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Authors

GBGhislaine BrignonBioénergétique et Ingénierie des Protéines MMMarie‐Françoise MahéUniversité Paris-Sud BRB. Ribadeau‐DumasCentre National de la Recherche Scientifique

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Implication

Molecular analysis reveals internal deletions and altered splicing in goat alpha s1-casein variants, suggesting defective RNA processing reduces milk protein synthesis.

Key Points

To determine the primary amino acid sequence of goat alpha s1-casein variants D, E, and F and identify the molecular alterations associated with their reduced synthesis in milk.
Determined the primary amino acid sequences of goat alpha s1-casein variants D, E, and F.
Compared variant structures to reference variant B using protein electrophoretic mobility and existing casein cDNA and genomic sequence data.
Variant E matches the electrophoretic mobility of variant B but carries two amino acid substitutions, Arg100Lys and Thr195Ala.
Variants D and F contain internal deletions of 11 amino acids (positions 59–69) and 37 amino acids (positions 59–95), respectively, which eliminate the major phosphorylation site.
Comparison with casein gene sequences indicates that deletions in variants D and F stem from single and multi-exon skipping, respectively, likely caused by splice site mutations that impair RNA processing.

Cite This Study

Brignon et al. (1990) studied this question.

synapsesocial.com/papers/6aa2ee4c9a77b44d1a206fce https://doi.org/10.1111/j.1432-1033.1990.tb19328.x

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Implication

Molecular analysis reveals internal deletions and altered splicing in goat alpha s1-casein variants, suggesting defective RNA processing reduces milk protein synthesis.

Two of the three genetic variants of goat αs1‐casein which are synthesized at a reduced level have an internal deletion possibly due to altered RNA splicing

Discussion

Member takes

Implication

Key Points

Cite This Study

Two of the three genetic variants of goat αs1‐casein which are synthesized at a reduced level have an internal deletion possibly due to altered RNA splicing

Discussion

Member takes

Implication

Key Points

Cite This Study

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