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- Table of Contents
Facts about Rho-related GTP-binding protein RhoH.
Essential for efficient beta-selection and positive choice by encouraging the ZAP70-dependent phosphorylation of the LAT signalosome through pre-TCR and TCR signaling. Crucial for thymocyte maturation during DN3 to DN4 transition and through positive selection.
Human | |
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Gene Name: | RHOH |
Uniprot: | Q15669 |
Entrez: | 399 |
Belongs to: |
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small GTPase superfamily |
ras homolog gene family, member H; translocation three four
Mass (kDA):
21.331 kDA
Human | |
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Location: | 4p14 |
Sequence: | 4; NC_000004.12 (40191080..40246967) |
Expressed only in hematopoietic cells. Present at very high levels in the thymus, less abundant in the spleen, and least abundant in the bone marrow. Expressed at a higher level in the TH1 subtype of T-helper cells than in the TH2 subpopulation. Expressed in neutrophils under inflammatory conditions, such as cystic fibrosis, ulcerative colitis and appendicitis.
Cytoplasm. Cell membrane; Lipid-anchor; Cytoplasmic side. Colocalizes together with ZAP70 in the immunological synapse.
PMID: 7784061 by Dallery E., et al. TTF, a gene encoding a novel small G protein, fuses to the lymphoma- associated LAZ3 gene by t(3;4) chromosomal translocation.
PMID: 11809807 by Li X., et al. The hematopoiesis-specific GTP-binding protein RhoH is GTPase deficient and modulates activities of other Rho GTPases by an inhibitory function.