| histidine decarboxylase | <enzyme> An enzyme that catalyses the decarboxylation of histidine to histamine and carbon dioxide. It requires pyridoxal phosphate in animal tissues, but not in microorganisms. Chemical name: L-Histidine carboxy-lyase Registry number: EC 4.1.1.22 (12 Dec 1998) |
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| histidine N-acetyltransferase | <enzyme> Synthesises nalpha-acetyl-l-histidine from l-histidine and acetylcoenzyme a Registry number: EC 2.3.1.33 Synonym: acetyl-CoA - l-histidine n-acetyltransferase, histidine acetyltransferase, coasac - l-histidine n-acetyltransferase, n-acetylhistidine synthetase (26 Jun 1999) |
| histidine permease | <chemical> Hisp, hism and hisq are membrane proteins found in histidine permease (the hisqmp2 complex); also contains the histidine-binding protein hisj Chemical name: permease, histidine Synonym: hisp protein, hism protein, hisq protein, hutm gene product, ee57d gene product (26 Jun 1999) |
| histidine-trna ligase | <enzyme> An enzyme that activates histidine with its specific transfer RNA. Chemical name: L-Histidine:tRNA(His) ligase (AMP-forming) Registry number: EC 6.1.1.21 (12 Dec 1998) |
| histidino | The radical of histidine produced by removal of a hydrogen from a nitrogen atom; prefixed by Na, Nτ, or Nπ. (05 Mar 2000) |
| histidinol | <chemical> Beta-amino-1h-imidazole-4-propanol. The penultimate step in the pathway of histidine biosynthesis. Oxidation of the alcohol group on the side chain gives the acid group forming histidine. Histidinol has also been used as an inhibitor of protein synthesis. Chemical name: 1H-Imidazole-4-propanol, beta-amino- (12 Dec 1998) |
| histidinol-phosphatase | <enzyme> An enzyme that catalyses the hydrolysis of histidinol-phosphate to histidinol. One of the regulatory enzymes in histidine biosynthesis. Chemical name: L-Histidinol-phosphate phosphohydrolase Registry number: EC 3.1.3.15 (12 Dec 1998) |
| histidinuria | Excretion of considerable amounts of histidine in the urine; frequently observed in later months of pregnancy, and in histidinaemia. (05 Mar 2000) |
| histidyl | The acyl radical of histidine. (05 Mar 2000) |
| histio- | Tissue, especially connective tissue. Origin: G. Histion, web (tissue) (05 Mar 2000) |
| histioblast | A tissue-forming cell. Synonym: histoblast. Origin: histio-+ G. Blastos, germ (05 Mar 2000) |
| histiocyte | <pathology> Long lived resident macrophage found within tissues. (11 Jan 1998) |
| histiocytic | Relating to or involving histiocytes (macrophages). (09 Oct 1997) |
| histiocytic disorders, malignant | Distinctive neoplastic disorders of histiocytes. Included are acute monocytic leukaemias, malignant histiocytosis (histiocytosis, malignant), and true histiocytic lymphomas. (12 Dec 1998) |
| histiocytic lymphoma | <tumour> A malignant tumour of reticular tissue composed predominantly of neoplastic histiocytes. See: large cell lymphoma. (05 Mar 2000) |
Synonyms : Histidinase, Histidine Deaminase, Histidine alpha-Deaminase, Ammonia-Lyase, Histidine, Deaminase, Histidine, Histidine Ammonia Lyase, Histidine alpha Deaminase, alpha-Deaminase, Histidine
Synonyms : Carboxy-Lyase, Histidine, Decarboxylase, Histidine, Histidine Carboxy Lyase
Synonyms : His-tRNA Ligase, Histidyl-tRNA Synthetase, Jo-1 Antigen, Antigen, Jo-1, His tRNA Ligase, Histidine tRNA Ligase, Histidyl tRNA Synthetase, Jo 1 Antigen, Ligase, His-tRNA, Ligase, Histidine-tRNA, Synthetase, Histidyl-tRNA
Synonyms :
Synonyms : Histidinolphosphatase
| histoincompatibility |
incompatibility in which one person's tissue cannot be transplanted to another person
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| histologic |
histological: of or relating to histology
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| histone |
a simple protein containing mainly basic amino acids; present in cell nuclei in association with nucleic acids
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| histological |
of or relating to histology
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| history |
the aggregate of past events; "a critical time in the school's history" the continuum of events occurring in succession leading from the past to the present and even into the future; "all of human history" a record or narrative description of past events; "a history of France"; "he gave an inaccurate account of the plot to kill the president"; "the story of exposure to lead" the discipline that records and interprets past events involving human beings; "he teaches Medieval history"; "history takes the long view" all that is remembered of the past as preserved in writing; a body of knowledge; "the dawn of recorded history"; "from the beginning of history"
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| HIST | belonging to the past |
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| HIST | having once lived or existed or taken place in the real world as distinct from being legendary |
| HIST | used of the study of a phenomenon (especially language) as it changes through time |
| HIST | of or relating to the study of history |
| HIST | of what is important or famous in the past |
| HIST | writing having historical value (as opposed to fiction or myth etc.) |
| HIST | the study of linguistic change |
| HIST | writing having historical value (as opposed to fiction or myth etc.) |
| HIST | a stage in the history of a culture having a definable place in space and time |
| HIST | the use of the present tense to describe past actions or states |
| HIST | writing having historical value (as opposed to fiction or myth etc.) |
| HIST | a school of 19th century German economists and legal philosophers who tried to explain modern economic systems in evolutionary or historical terms |
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