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Glossary: H

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H
HDAC:
stands for histone deacetylase; Connections Map Component -- Histone deacetylase
HEAT:
stands for Huntington-elongation factor 1A-protein phosphatase 2A (PP2A) A subunit-TOR repeats; each ~39 amino-acid repeat is believed to form antiparallel a helices that stack in parallel with other repeats to form an ordered array, which may serve to mediate protein-protein interactions
HECT:
stands for homology to the papillomavirus E6-associated protein C terminus; defines a family of E3 ubiquitin ligases; Connections Map Component -- Smad ubiquitin regulatory factor
HER2:
a member of the family of epidermal growth factor (EGF) receptors, also known as ErbB2 or Neu; Connections Map Component -- v-erb-b2 erythroblastic leukemia viral oncogene homolog 2
HGF:
stands for hepatocyte growth factor; also known as scatter factor; a secreted protein ligand; Connections Map Component -- Met
Hhip:
stands for Hedgehog interacting protein (also abbreviated Hhip1 or Hip1); a transmembrane protein that interacts with Hedgehog to diminish Hedgehog signaling
HHL:
stands for N-hexanoyl-L-homoserine; a diffusible quorum signal
HID:
stands for head involution defective; a Drosophila antagonist of inhibitor of apoptosis proteins (IAPs), promotes caspase activation, leading to programmed cell death
HIF-1:
stands for hypoxia-inducible factor 1; a transcription factor that regulates the expression of target genes in response to hypoxic conditions; Connections Map Component -- Hypoxia-inducible factor 1
HIPK:
stands for homeodomain-interacting protein kinase; a serine-threonine protein kinase
HK:
stands for histidine kinase; His-containing catalytic protein kinase that mediate His to Asp phosphorelay signaling; Connections Map Component -- Histidine protein kinase
hKIS:
stands for human kinase interacting with stathmin; one substrate is the cyclin-dependent kinase inhibitor p27
HMG:
stands for high mobility group; an HMG box is a motif found in certain transcription factors; Connections Map Components -- T cell factor | Lymphoid-enhancing factor 1 | Sox
HNF:
stands for hepatocyte nuclear factor; a family of transcription factors
hnRNA:
stands for heterogeneous nuclear ribonucleic acids; unspliced pre-messenger RNA (pre-mRNA)
hnRNP:
stands for heterogeneous nuclear ribonucleoproteins; RNA binding proteins that complex with heterogeneous nuclear ribonucleic acids (hnRNA); Connections Map Component -- Ribonucleoprotein K
HO-1:
stands for heme oxygenase 1, an inducible isoform of the enzyme that converts heme to biliverdin-IXalpha and also produces the signaling gas carbon monoxide (CO)
HO-2:
stands for heme oxygenase 2, a constitutively expressed isoform of the enzyme that converts heme to biliverdin-IXalpha and also produces the signaling gas carbon monoxide (CO)
HPK1:
stands for hematopoietic progenitor kinase 1
HPLC:
stands for high-pressure liquid chromatography
HPt:
stands for histidine-containing phosphotransfer protein, also abbreviated HPT; mediates the transfer of phosphate to histidine in His-Asp-His-Asp phosphorelay signaling systems; Connections Map Component -- Histidine phosphotransfer protein
HRG:
stands for heregulin; a secreted ligand that binds members of the epidermal growth factor receptor family
HRI:
stands for heme-regulated inhibitor; a hemin binding kinase activated by autophosphorylation in response to hemin deficiency
HSE:
stands for heat shock element
HSF-1:
stands for heat shock factor 1; a transcription factor activated in response to heat shock that stimulates expression of heat shock genes
HSP:
stands for heat shock protein; proteins in this family participate in cellular responses to heat and other stresses; Connections Map Components -- Heat shock protein 27 kD | Heat shock protein 90 kD
HSR1:
stands for heat shock RNA 1; a noncoding RNA involved in activation of heat shock genes
HUVEC:
stands for human umbilical vascular (or vein) endothelial cells
HVEM:
stands for herpes virus entry mediator

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