MAP1S
Domain
The N-terminus of the heavy chain associates with the C-terminus of the light chain to form the heterodimer complex (By similarity). Its C-terminal part of the heavy chain interacts with ESR1.
Function
Microtubule-associated protein that mediates aggregation of mitochondria resulting in cell death and genomic destruction (MAGD). Plays a role in anchoring the microtubule organizing center to the centrosomes. Binds to DNA. Plays a role in apoptosis. Involved in the formation of microtubule bundles (By similarity).
Sequence Similarities
Belongs to the MAP1 family.
Tissue Specificity
Expressed in neurons (at protein level). Expressed in spermatocytes, spermatids and spermatozoa. Expressed in the cerebral cortex. Highly expressed in testis. Moderately expressed in the brain, colon, heart, kidney, liver, lung, placenta, small intestine, spleen and stomach. Weakly expressed in muscle.
Cellular localization
- Nucleus
- Cytoplasm
- Cytosol
- Cytoplasm
- Cytoskeleton
- Cytoplasm
- Cytoskeleton
- Spindle
- Detected in filopodia-like protrusions and synapses (By similarity). Detected in perinuclear punctate network corresponding to mitochondrial aggregates and in the nucleus in cells exhibiting apoptosis. Associated specifically with microtubules stabilized by paclitaxel and colocalizes with RASSF1 isoform A. In interphase cells, shows a diffuse cytoplasmic staining with partial localization to the microtubules. During the different stages of mitosis detected at the spindle microtubules.
Alternative names
BPY2IP1, C19orf5, MAP8, VCY2IP1, MAP1S, Microtubule-associated protein 1S, MAP-1S, BPY2-interacting protein 1, Microtubule-associated protein 8, Variable charge Y chromosome 2-interacting protein 1, VCY2-interacting protein 1, VCY2IP-1