noun Date: 1872 a large transparent thick-walled cell that is found in the filaments of some cyanobacteria and is the site of nitrogen fixation • heterocystous adjective

New Collegiate Dictionary. 2001.

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  • Heterocyst — Het er*o*cyst, n. [Hetero + cyst.] (Bot.) A cell larger than the others, and of different appearance, occurring in certain alg[ae] related to nostoc. [1913 Webster] …   The Collaborative International Dictionary of English

  • Heterocyst — Heterocysts are specialized nitrogen fixing cells formed by some filamentous cyanobacteria, such as Nostoc punctiforme , Cylindrospermum stagnale and Anabaena sperica , during nitrogen starvation. They fix nitrogen from dinitrogen (N2) in the air …   Wikipedia

  • heterocyst — Specialized cell type found at regular intervals along the filaments of certain Cyanobacteria; site of nitrogen fixation …   Dictionary of molecular biology

  • heterocyst — /het euhr euh sist /, n. Bacteriol. one of the enlarged nitrogen fixing cells occurring along the filaments in some blue green algae. [1870 75; HETERO + CYST] * * * …   Universalium

  • heterocyst — het·ero·cyst …   English syllables

  • heterocyst — het•er•o•cyst [[t]ˈhɛt ər əˌsɪst[/t]] n. mcr one of the enlarged nitrogen fixing cells along the filaments in some blue green algae • Etymology: 1870–75 …   From formal English to slang

  • heterocyst — ˈhed.ərəˌsist noun Etymology: International Scientific Vocabulary heter + cyst : one of the large transparent thick walled cells resembling spores occurring at intervals along the filament in certain filamentous blue green algae …   Useful english dictionary

  • heterocystous — adjective see heterocyst …   New Collegiate Dictionary

  • Glutamine — NatOrganicBox Chemical structure of L glutamine name=(2S) 2 amino 4 carbamoyl butanoic acid PubChem = 738 CAS = 56 85 9 ChemSpiderID = 718 SMILES = N [C@@H] (CCC(N)=O)C(O)=O C=5 | H=10 | N=2 | O=3 mass=146.15 g/molGlutamine (abbreviated as Gln or …   Wikipedia

  • Cyanobacteria — Temporal range: 3500–0 Ma Had n Archean …   Wikipedia

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