(n.) A impure earthy ore of iron or a ferruginous clay, usually red (hematite) or yellow (limonite), -- used as a pigment in making paints, etc. The name is also applied to clays of other colors.
(n.) A metallic oxide occurring in earthy form; as, tungstic ocher or tungstite.
(n.) See Ocher.
Example Sentences:
(1) Allelic complementation was not observed, despite testing of a large number of allele pairs, and alleles suppressible by the ochre suppressor SUP11 were absent from a sample of 48 spontaneous mutants and occurred infrequently (7%) among a sample of ultraviolet-induced mutants.
(2) Amber (UAG) and ochre (UAA) mutations are suppressed whereas UGA is not suppressed.
(3) Introduction of an ochre nonsense codon into the reading frame of the leader peptide sequence leads to considerable reduction of the basal expression and loss of inducibility of the cat gene.
(4) The first position of anticodon is 2'-O-methyluridine (Um), forming UmUA as the anticodon, which presumably recognizes the ochre termination codon UAA.
(5) Oligonucleotide-directed mutagenesis was used to generate amber, ochre and opal suppressors from cloned Arabidopsis and Nicotiana tRNA(Tyr) genes.
(6) The activities are present in yeast mutants which have greatly reduced levels of the three major vacuole-associated proteases (A, B and C) or which carry an ochre mutation in the major neutral protease (B).
(7) Mutants containing an ochre mutation in any essential yeast gene give rise to nonsectoring, white colonies, since cell growth is dependent on the presence of the plasmid-borne suppressor.
(8) Amber and ochre suppressor mutations in Salmonella typhimurium were selected.
(9) The nonsense mutants of S. pombe have been classified according to their suppressibility by defined opal and ochre suppressors into a class of efficiently suppressed opal and a class of inefficiency suppressed ochre mutants.
(10) Patterns of reversion produced by ciprofloxacin, enoxacin and ofloxacin in Salmonella typhimurium strains carrying the hisG428 ochre mutation have been studied.
(11) These replacements are consistent with a chain-terminating codon in am(17) of either the amber (UAG) or the ochre type (UAA), but are inconsistent with UGA.
(12) Allosuppressor (sal) mutations enhance the efficiency of the yeast ochre suppressor SUQ5 and define five unlinked loci, SAL1-SAL5.
(13) Using site-specific mutagenesis, we constructed five more efficient variants of tRNA(Glu)-Suoc, an extremely inefficient ochre suppressor.
(14) The opal suppressor form shows moderate suppressor activity when the gene is introduced on this vector, however, the ochre suppressor form exhibits no detectable biological activity regardless of gene copy number.
(15) 4-nitroquinoline-1-oxide (NQO) induces high frequencies of intragenic revertants of amber (UAG) but not ochre (UAA) mutants of yeast.
(16) Genetic recombination was assayed by measuring beta-galactosidase produced after recombination between two noncomplementing lacZ ochre alleles.
(17) The growth patterns of nonsense mutants of RNA (GA and f2) and DNA (lambda and T4) phages suggested that KO1 carried an amber, but not ochre or opal suppressors.
(18) Of 313 motility-deficient mutants isolated from an LT2 his(amber) strain fixed in phase 1 by gene vh2(-), 25 regained motility when amber or ochre suppressors were introduced, in F' factors or by transduction.
(19) The plasmid also increased frequency of UV-induced reversion to His+ in all tested his point mutants (wild type for UV sensitivity), including amber, ochre, UGA, missense, and frame-shift mutants.
(20) The results demonstrate that an ochre suppressor mutant of Escherichia coli K-12 produces abnormal 30S ribosomes.
Umber
Definition:
(n.) A brown or reddish pigment used in both oil and water colors, obtained from certain natural clays variously colored by the oxides of iron and manganese. It is commonly heated or burned before being used, and is then called burnt umber; when not heated, it is called raw umber. See Burnt umber, below.
(n.) An umbrere.
(n.) See Grayling, 1.
(n.) An African wading bird (Scopus umbretta) allied to the storks and herons. It is dull dusky brown, and has a large occipital crest. Called also umbrette, umbre, and umber bird.
(a.) Of or pertaining to umber; resembling umber; olive-brown; dark brown; dark; dusky.
(v. t.) To color with umber; to shade or darken; as, to umber over one's face.
Example Sentences:
(1) A statement from the Leeds chairman, Andrew Umbers, said Cellino was optimistic as to the outcome of a Rule K hearing.
(2) A banned person is required not to wield director-level authority at a club, and Leeds, where Andrew Umbers has taken over as chairman, maintain Cellino will not direct any matters during his ban.
(3) Their director, Andrew Umbers, said: "We are delighted to have been involved in this transaction.
(4) After a due process, I have also sold – with a clear harm to my interests – a minority stake in the club, so that in no way I could be prevented from freely acting as an independent citizen and individual before any authority.” A separate statement from Umbers read: “Massimo Cellino is taking this independent action so that LUFC is seen to be fully compliant with the Football League Rules and thus help the club avoid any sanctions.
(5) The week one tan shade is somewhere between Tuscan Sunset and Burnt Umber on my Dulux paint chart.
(6) In the golden afternoon light, the gorge looks a little like part of the Grand Canyon, with layered sedimentary rocks in varying tones of rusty brown and umber.
(7) The opportunity as the umber of detections increases is for amateur astronomers – our citizen scientists – to help here,” he said.
(8) By means of microsurgical technique and under the control of the ophthalmoscope 300 mul of isotone solution of NaCl with 22Na or o-131J-iodo-hippuric acid were injected into the space between the retina and pigment epithelium of 28 narcotized tomcats after having closed the inferior retina vessels by photocoagulation about 1 hr before in an umber of the animals.
(9) Mantle, who is over 1.95 metres (6ft 5in) tall, played Greatjon Umber, a Northern lord, in the first series of Game of Thrones.
(10) Sienna, chocolate, saddle brown, umber (burnt or raw), and mahogany work best with decent-to-good hair and even-to-keen features.
(11) We’re in constant discussions with the Football League and our own board and senior management team, we’re not sure.” Tim Kerr, the independent QC who chaired the professional conduct committee, dismissed the legal arguments made by Cellino’s lawyers, and one from the club director Andrew Umbers that claimed there was “a real likelihood of insolvency” should Cellino be disqualified.