protein
GTPase HRas
Gene
HRAS
Organism
Homo sapiens(9606)
Length
189 aa
Mass
21,298 Da
GTPase HRas is a small GTPase protein (189 amino acids) encoded by the HRAS gene that functions as a molecular switch in Ras protein signal transduction pathways. The protein binds and hydrolyzes guanosine nucleotides (GDP/GTP), enabling activation of downstream signaling cascades (UniProt: P01112).
HRAS mutations are associated with several syndromic and malignant conditions. Costello syndrome, a rare developmental disorder characterized by prenatal overgrowth, postnatal growth deficiency, intellectual disability, distinctive facial features, cardiovascular abnormalities, and tumor predisposition, results from HRAS dysregulation. The gene is also implicated in non-medullary thyroid cancer, bladder cancer, and Schimmelpenning-Feuerstein-Mims syndrome, a condition featuring sebaceous nevi with associated central nervous system and skeletal abnormalities (UniProt: P01112).
HRAS carries SFARI syndromic (S) classification, indicating a curated association with autism in the context of genetic syndromes (SFARI Cat S). This reflects the intellectual disability and neurodevelopmental features observed in HRAS-related Costello syndrome cases.
Generated from the curated entity record below. May contain errors — verify against source links.
Proteomics Evidence · AD
↓ Down in ADP3
not detected
P2
not detected
S2
-0.548
S3
not detected
Mean log₂FC across detected fractions: -0.5479 (1 of 4 fractions detected)
Human post-mortem AD brain vs age-matched controls, TMT-labeled, 4 subcellular fractions (P2, P3, S2, S3), DDA proteomics.
Genetic Evidence · ASD
Source: SFARI Gene database · gene.sfari.org
This protein is implicated in both ASD and Alzheimer's Disease. View all cross-disease proteins →
Related Publications
Browse all →Tau molecular diversity contributes to clinical heterogeneity in Alzheimer's disease.
Dujardin Simon et al.Nature medicine2020PMID 32572268Deep Multilayer Brain Proteomics Identifies Molecular Networks in Alzheimer's Disease Progression.
Bai Bing et al.Neuron2020PMID 31926610A Multi-network Approach Identifies Protein-Specific Co-expression in Asymptomatic and Symptomatic Alzheimer's Disease.
Seyfried Nicholas T et al.Cell systems2017PMID 27989508Large-scale deep multi-layer analysis of Alzheimer's disease brain reveals strong proteomic disease-related changes not observed at the RNA level.
Johnson Erik C B et al.Nature neuroscience2022PMID 35115731Organization and regulation of gene transcription.
Cramer PatrickNature2019PMID 31462772Inherited and De Novo Genetic Risk for Autism Impacts Shared Networks.
Ruzzo Elizabeth K et al.Cell2019PMID 31398340Inherited and multiple de novo mutations in autism/developmental delay risk genes suggest a multifactorial model.
Guo Hui et al.Molecular autism2018PMID 30564305Whole genome sequencing resource identifies 18 new candidate genes for autism spectrum disorder.
C Yuen Ryan K et al.Nature neuroscience2017PMID 28263302Identification of common genetic risk variants for autism spectrum disorder.
Grove Jakob et al.Nature genetics2019PMID 30804558Synaptic, transcriptional and chromatin genes disrupted in autism.
De Rubeis Silvia et al.Nature2014PMID 25363760
Function
Involved in the activation of Ras protein signal transduction (PubMed:22821884). Ras proteins bind GDP/GTP and possess intrinsic GTPase activity (PubMed:12740440, PubMed:14500341, PubMed:9020151)
Disease associations
Costello syndromeCSTLO
A rare condition characterized by prenatally increased growth, postnatal growth deficiency, intellectual disability, distinctive facial appearance, cardiovascular abnormalities (typically pulmonic stenosis, hypertrophic cardiomyopathy and/or atrial tachycardia), tumor predisposition, skin and musculoskeletal abnormalities.
Congenital myopathy with excess of muscle spindlesCMEMS
Variant of Costello syndrome.
Thyroid cancer, non-medullary, 2NMTC2
A form of non-medullary thyroid cancer (NMTC), a cancer characterized by tumors originating from the thyroid follicular cells. NMTCs represent approximately 95% of all cases of thyroid cancer and are classified into papillary, follicular, Hurthle cell, and anaplastic neoplasms.
Bladder cancerBLC
A malignancy originating in tissues of the urinary bladder. It often presents with multiple tumors appearing at different times and at different sites in the bladder. Most bladder cancers are transitional cell carcinomas that begin in cells that normally make up the inner lining of the bladder. Other types of bladder cancer include squamous cell carcinoma (cancer that begins in thin, flat cells) and adenocarcinoma (cancer that begins in cells that make and release mucus and other fluids). Bladder cancer is a complex disorder with both genetic and environmental influences.
Schimmelpenning-Feuerstein-Mims syndromeSFM
A disease characterized by sebaceous nevi, often on the face, associated with variable ipsilateral abnormalities of the central nervous system, ocular anomalies, and skeletal defects. Many oral manifestations have been reported, not only including hypoplastic and malformed teeth, and mucosal papillomatosis, but also ankyloglossia, hemihyperplastic tongue, intraoral nevus, giant cell granuloma, ameloblastoma, bone cysts, follicular cysts, oligodontia, and odontodysplasia. Sebaceous nevi follow the lines of Blaschko and these can continue as linear intraoral lesions, as in mucosal papillomatosis.
Sources
Last updated 5/8/2026, 1:07:20 AM