Browsing UMBC Biological Sciences Department by Title
Now showing items 1-20 of 258
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Adaptive color vision in Pullosquilla litoralis (Stomatopoda, Lysiosquilloidea) associated with spectral and intensity changes in light environment
(The Company of Biologists Ltd, 2002-10-17)Some stomatopod crustacean species that inhabit a range of habitat depths have color vision systems that adapt to changes in ambient light conditions. To date, this change in retinal function has been demonstrated in species ... -
Adaptive signaling behavior in stomatopods under varying light conditions
(Taylor and Francis Online, 2009-09-07)Stomatopod crustaceans (mantis shrimp) are aggressive benthic marine predators with extraordinary color vision. When communicating with conspecifics, many stomatopods display conspicuously colored body areas, often in ... -
Altered regulation of the glnA gene in glutamine synthetase mutants of Bacillus subtilis
(American Society for Microbiology, 1986-07-01)Expression of beta-galactosidase by Bacillus subtilis strains carrying transcriptional fusions of the glnA promoter region to the Escherichia coli lacZ gene was found to be regulated by the nitrogen source in glnA+ strains. ... -
Altered regulation of the glnRA operon in a Bacillus subtilis mutant that produces methionine sulfoximine-tolerant glutamine synthetase
(American Society for Microbiology, 1993-02)A Bacillus subfilis mutant that produced glutamine synthetase (GS) with altered sensitivity to DL-methionine sulfoximine was isolated. The mutation, designated glnA33, was due to a T- A-to-C- G transition, changing valine ... -
Alternate pathways for processing in the internal transcribed spacer 1 in pre-rRNA of Saccharomyces cerevisiae
(Oxford University Press, 1994-12-11)We have extended the system of Nogi et al. (Proc. Natl. Acad. Sci. USA 88, 1991, 3962-3966) for transcription of rRNA from an RNA polymerase II promoter in strains lacking functional RNA polymerase I. In our strains two ... -
Anaerobic Ammonia-Oxidizing Bacteria and Related Activity in Baltimore Inner Harbor Sediment
(American Society for Microbiology, 2005-04)The discovery of bacteria capable of anaerobic ammonia oxidation (anammox) has generated interest in understanding the activity, diversity, and distribution of these bacteria in the environment. In this study anammox ... -
Analysis of cell cycle parameters during the transition from unhindered growth to ribosomal and translational stress conditions
(PLOS, 2017-10-13)Abrogation of ribosome synthesis (ribosomal stress) leads to cell cycle arrest. However, the immediate cell response to cessation of ribosome formation and the transition from normal cell proliferation to cell cycle arrest ... -
Analysis of the Bacillus subtilis S10 ribosomal protein gene cluster identifies two promoters that may be responsible for transcription of the entire 15-kilobase S10-spc-alpha cluster
(American Society for Microbiology, 1997-11)We have sequenced a previously uncharacterized region of the Bacillus subtilis S10 ribosomal protein gene cluster. The new segment includes genes for S10, L3, L4, L23, L2, S19, L22, S3, and part of L16. These B. subtilis ... -
ANCESTRAL STATE RECONSTRUCTION OF MIGRATION: MULTISTATE ANALYSIS REVEALS RAPID CHANGES IN NEW WORLD ORIOLES (ICTERUS SPP.)
(The American Ornithologists' Union, 2006-03-20)During the past century, numerous theoretical articles explored the evolution of seasonal migration in birds; many of these focused on environmental or social conditions that may have led to the origin of migration. More ... -
As the raven flies: using genetic data to infer the history of invasive common raven (Corvus corax) populations in the Mojave Desert
(Blackwell Publishing Ltd, 2007-10-01)Common raven (Corvus corax) populations in Mojave Desert regions of southern California and Nevada have increased dramatically over the past five decades. This growth has been attributed to increased human development in ... -
ATP and Odor Mixture Activate TRPM5-Expressing Microvillous Cells and Potentially Induce Acetylcholine Release to Enhance Supporting Cell Endocytosis in Mouse Main Olfactory Epithelium
(Frontier, 2018)The main olfactory epithelium (MOE) functions to detect odor molecules, provide an epithelial surface barrier, and remove xenobiotics from inhaled air. Mechanisms coordinating the activities of different cell types within ... -
Autogenous control is not sufficient to ensure steady-state growth rate-dependent regulation of the S10 ribosomal protein operon of Escherichia coli
(American Society for Microbiology, 1990-01)The regulation of the S10 ribosomal protein operon of Escherichia coli was studied by using a lambda prophage containing the beginning of the S10 operon (including the promoter, leader, and first one and one-half structural ... -
Autogenous control of the S10 ribosomal protein operon of Escherichia coli: genetic dissection of transcriptional and posttranscriptional regulation
(National Academy of Sciences, 1987-09)The S10 ribosomal protein operon is regulated autogenously by the product of one of the genes of the operon, the gene encoding ribosomal protein L4. We have used site-directed mutagenesis to isolate leader mutations affecting ... -
Bacillus cereus Group Bacteriophage Flapjack Genome Sequence
(American Society for Microbiology, 2017-08-03)The Bacillus cereus group bacteriophage Flapjack, a double-stranded DNA (dsDNA) Myoviridae isolate collected from soil collected in Washington, DC, is a member of cluster C3 and encodes an intramolecular chaperone-containing ... -
Bahama Oriole Project team awarded NSF grant to offer more UMBC undergrads International Research Experiences
(UMBC, 2018-11-06)UMBC is recognized as a national leader in undergraduate teaching, in part because the university connects so many students with meaningful research opportunities. Now, a new $300,000 NSF International Research Experiences ... -
Behavioural evidence for polarisation vision in stomatopods reveals a potential channel for communication
(Elsevier B.V., 1999-07-15)Polarisation sensitivity (PS) – the ability to detect the orientation of polarised light – occurs in a wide variety of invertebrates [1], [2] and vertebrates [3], [4], [5], many of which are marine species [1]. Of these, ... -
Bioinspired Polarization Imaging Sensors: From Circuits and Optics to Signal Processing Algorithms and Biomedical Applications
(IEEE, 2014-08-20)In this paper, we present recent work on bioinspired polarization imaging sensors and their applications in biomedicine. In particular, we focus on three different aspects of these sensors. First, we describe the electro–optical ... -
Biological polarized light reflectors in stomatopod crustaceans
(SPIE, 2005-09-10)Body parts that can reflect highly polarized light have been found in several species of stomatopod crustaceans (mantis shrimps). These polarized light reflectors can be grossly divided into two major types. The first ... -
Biological properties of coral GFP-type proteins provide clues for engineering novel optical probes and biosensors
(SPIE, 2004-06-14)In recent years, a variety of Green Fluorescent Protein (GFP)-like pigments have been discovered from corals and other marine organisms. They are widely used to expand the range of available GFP-type proteins in imaging ... -
Biological Sunscreens Tune Polychromatic Ultraviolet Vision in Mantis Shrimp
(Elsevier B.V., 2014-07-03)Stomatopod crustaceans, or mantis shrimp, are renowned for their complex visual systems. Their array of 16 types of photoreceptors provides complex color reception, as well as linear and circular polarization sensitivity. ...