PRC1

Chr 15

protein regulator of cytokinesis 1

Also known as: ASE1, MAP65

This gene encodes a protein that is involved in cytokinesis. The protein is present at high levels during the S and G2/M phases of mitosis but its levels drop dramatically when the cell exits mitosis and enters the G1 phase. It is located in the nucleus during interphase, becomes associated with mitotic spindles in a highly dynamic manner during mitosis, and localizes to the cell mid-body during cytokinesis. This protein has been shown to be a substrate of several cyclin-dependent kinases (CDKs). It is necessary for polarizing parallel microtubules and concentrating the factors responsible for contractile ring assembly. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2012]

OMIMResearchGenerating clinical summary…
DNmechanismLOEUF 0.62
Clinical SummaryPRC1
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
0.62LOEUF
pLI 0.000
Z-score 3.58
OE 0.42 (0.290.62)
Tolerant

Typical tolerance to LoF variation

Missense Constraint?
0.28Z-score
OE missense 0.96 (0.871.05)
332 obs / 346.8 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.42 (0.290.62)
00.351.4
Missense OE?0.96 (0.871.05)
00.61.4
Synonymous OE?1.08
01.21.6
LoF obs/exp: 19 / 44.9Missense obs/exp: 332 / 346.8Syn Z: -0.69

This gene — mechanism propensity

DN
0.6743th %ile
GOF
0.4973th %ile
LOF
0.3162th %ile

The highest-scoring mechanism for this gene is dominant-negative.

DNprediction above median

Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

PRC1 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →