Determinants for the subcellular localization of the inner and outer spore coat hubs in Bacillus subtilis

Endospores, or spores for simplicity, are a highly resistant cell type produced by some bacterial species under adverse conditions. Two main protective layers contribute to the resilience of spores: the cortex, composed of peptidoglycan, and the outermost proteinaceous coat. In Bacillus subtilis, the coat comprises up to 80 different proteins, organized into four sublayers: the basement layer, the inner coat, the outer coat and the crust. These proteins are synthesized at different times during sporulation and deposited at the spore surface in multiple coordinated waves. Central to coat formation is a group of morphogenetic proteins that guide the assembly of the coat components. Targeting of the coat proteins to the surface of the developing spore is mainly controlled by the SpoIVA morphogenetic ATPase. In a second stage, the coat proteins fully encircle the spore, a process termed encasement that requires the morphogenetic protein SpoVID. Assembly of the inner coat requires SafA, whereas formation of the outer coat and the crust requires CotE. SafA interacts directly with the N terminus of SpoVID. (...)

Coat color dilution in mice because of inactivation of the melanoma antigen MART-1.

Melanoma antigen recognized by T cells 1 (MART-1) is a melanoma-specific antigen, which has been thoroughly studied in the context of immunotherapy against malignant melanoma and which is found only in the pigment cell lineage. However, its exact function and involvement in pigmentation is not clearly understood. Melanoma antigen recognized by T cells 1 has been shown to interact with the melanosomal proteins Pmel17 and OA1. To understand the function of MART-1 in pigmentation, we developed a new knockout mouse model. Mice deficient in MART-1 are viable, but loss of MART-1 leads to a coat color phenotype, with a reduction in total melanin content of the skin and hair. Lack of MART-1 did not affect localization of melanocyte-specific proteins nor maturation of Pmel17. Melanosomes of hair follicle melanocytes in MART-1 knockout mice displayed morphological abnormalities, which were exclusive to stage III and IV melanosomes. In conclusion, our results suggest that MART-1 is a pigmentation gene that is required for melanosome biogenesis and/or maintenance.

Association between white-coat effect and blunted dipping of nocturnal blood pressure.

In this study, we assessed whether the white-coat effect (difference between office and daytime blood pressure (BP)) is associated with nondipping (absence of BP decrease at night). Data were available in 371 individuals of African descent from 74 families selected from a population-based hypertension register in the Seychelles Islands and in 295 Caucasian individuals randomly selected from a population-based study in Switzerland. We used standard multiple linear regression in the Swiss data and generalized estimating equations to account for familial correlations in the Seychelles data. The prevalence of systolic and diastolic nondipping (<10% nocturnal BP decrease) and white-coat hypertension (WCH) was respectively 51, 46, and 4% in blacks and 33, 37, and 7% in whites. When white coat effect and nocturnal dipping were taken as continuous variables (mm Hg), systolic (SBP) and diastolic BP (DBP) dipping were associated inversely and independently with white-coat effect (P < 0.05) in both populations. Analogously, the difference between office and daytime heart rate was inversely associated with the difference between daytime and night-time heart rate in the two populations. These results did not change after adjustment for potential confounders. The white-coat effect is associated with BP nondipping. The similar associations between office-daytime values and daytime-night-time values for both BP and heart rate suggest that the sympathetic nervous system might play a role. Our findings also further stress the interest, for clinicians, of assessing the presence of a white-coat effect as a means to further identify patients at increased cardiovascular risk and guide treatment accordingly.

Coat of Arms Patent

Dr. Gibson receiving the Letters Patent. l to right E.R. Davey, retiring Chairman of the Board of Trustees Dr. James Gibson, President D.W. Lathrop, Chairman of the Board of Trustees C.A. Sankey, Chancellor

Coat of Arms Designs

Dr. Gibson was truly involved in nearly every aspect of the formation of Brock University. Pictured here is Dr. Gibson's preliminary design sketches and ideas for the Brock Coat of Arms.

Coat of Arms Final Sketch

The final sketch for the Brock University Coat of Arms. The actual Coat of Arms was based off of this sketch.

Brock University Coat of Arms

The armorial bearings for Brock University, or more simply the University Coat of Arms, or crest, was designed in a large part by Presdent Gibson, assisted by other members of the Board of Governors (A preliminary design can be seen here). The Coat of Arms was granted to Brock University on March 17th, 1965. The Coat of Arms consist of an eagle, taken from General Brock’s own arms, displayed against a scarlet background - one of the official colours of Brock University. Immediately above it on a chief argent is displayed a maple-leaf (for Canada), a scallop shell (from the Lincoln and Welland regiment), and a trillium (for the province of Ontario). An open book fronts the eagle representing learning and knowledge. The crest itself is made up of a torch symbolizing learning, surrounded by a serpent for wisdom, with two calumet or North American pipes of peace, to symbolize Canada, friendship and agreement. The supporters consist of a beaver on the dexter side, emblematic of Canada and representing work and industry in learning. On the sinister side, a brock or badger (also in commemoration of General Brock) represents tenacity of purpose. The motto 'Surgite' is visible just below the arms.

Place Card - Girl in Blue Coat and Bonnet

A place card with an illustration of a girl in a blue coat and bonnet.

Metal Stamp - Woodruff Coat of Arms

Square metal stamp, 2 1/2 cm x 6 1/2 cm, with the words "P.C. Band, Toronto, Ontario" engraved on it. The bar is 1 cm thick.

Woodruff Coat of Arms

Woodruff coat of arms (rough sketch - labeled), including a letter to Margaret from “Uncle Tom” regarding the coat of arms. Also included are 4 small cards and one Easter card bearing the coat of arms. [The Woodruff/Woodroffe crest originated in England. Sit Dux Sapientia (Wisdom be our guide). The arm holding a plant is supposed to be a dexter [right] arm, bent, holding a branch of honeysuckle vertically. Some members of the family believe that the plant is actually woodruff], Jan. 18, 1926.

Drawing and Explanation of the Cleveland Family Coat of Arms

Drawing and explanation of the Cleveland Family coat of arms. Pro Deo et Patria means For God and Country. The name is Saxon in origin and in 1403 the “de” was dropped from the name. The drawing and text are said to be from Cleveland Genealogy by J.B. Cleveland, 1881. It can also be found in An Account of the Lineage of General Moses Cleaveland (founder of the city of Cleveland, Ohio) of Canterbury, compiled by H.G. Cleveland, n.d.

Receipt from McLaren and Co. of St. Catharines for a suit and repairs to a coat

Receipt from McLaren and Co. of St. Catharines for a suit and repairs to a coat, Aug. 21, 1886.

Watercolour painting of the Woodruff coat of arms on paper

Watercolour painting of the Woodruff coat of arms on paper. This measures 43 cm. x 31 cm., n.d.

Ecophysiology of seed dormancy and salt tolerance of Grewia tenax (Forssk.) Fiori and Ziziphus spina-christi (L.) Willd.

Higher Education Commission (HEC) of Pakistan and German Academic Exchange Service (DAAD)