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The majority of the malignant cells displayed moderate cytoplasmic membranous staining. Strong immunoreactivity was seen in liver, pancreas, gastric and colorectal cancers. Malignant carcinoids and skin cancers showed weak positivity. Malignant gliomas and lymphomas were generally negative.
A majority of the malignant cells showed moderate to strong membranous positivity with additional weak cytoplasmic staining. Malignant gliomas were weakly stained or negative.
GENE INFORMATION
Gene name
SPTBN1
Synonyms
Description
Spectrin, beta, non-erythrocytic 1 (HGNC Symbol)
Entrez gene summary
Spectrin is an actin crosslinking and molecular scaffold protein that links the plasma membrane to the actin cytoskeleton, and functions in the determination of cell shape, arrangement of transmembrane proteins, and organization of organelles. It is composed of two antiparallel dimers of alpha- and beta- subunits. This gene is one member of a family of beta-spectrin genes. The encoded protein contains an N-terminal actin-binding domain, and 17 spectrin repeats which are involved in dimer formation. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
SPOCTOPUS predicted membrane proteins Predicted intracellular proteins Plasma proteins Protein evidence (Kim et al 2014) Protein evidence (Ezkurdia et al 2014)