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Protein tandem repeats
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An array of protein tandem repeats is defined as several adjacent copies having the same or similar sequence motifs. These periodic sequences are generated by internal duplications in both coding and non-coding genomic sequences. Repetitive units of protein tandem repeats are considerably diverse, ranging from the repetition of a single amino acid to domains of 100 or more residues.
Example multiple sequence alignment of a pentapeptide repeat leading to a tandem repeat structure
Example multiple sequence alignment of a pentapeptide repeat leading to a tandem repeat structure
Catenin beta-1
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Catenin beta-1, also known as β-catenin (beta-catenin), is a protein that in humans is encoded by the CTNNB1 gene.
Catenin beta-1
Catenin beta-1
Immunohistochemistry for β-catenin in uterine leiomyoma, which is negative as there is only staining of cytoplasm but not of cell nuclei. This is a co
Immunohistochemistry for β-catenin in uterine leiomyoma, which is negative as there is only staining of cytoplasm but not of cell nuclei. This is a consistent finding, which helps in distinguishing such tumors from β-catenin positive spindle cell tumors.