substrate

Substrate

The word substrate can mean the following: In biochemistry , a substrate is a molecule which is acted upon by an enzyme . In industrial printing , substrate is u...

Ribulose-1,5-bisphosphate

...e taking place during photosynthesis . It is the substrate used by the enzyme RubisCO to fix carbon dioxide ....

Phosphorylation

...ative phosphorylation . ATP is also synthesized by substrate level phosphorylation during glycolysis .ATP is synthesized at the expense of solar energy by photophosphorylation in the chloroplasts of plant cells. Phosphorylation of sugars is often the stage of their catabolism . It allows cells to acc...

Michaelis-Menten kinetics

... kinetics are valid only when the concentration of substrate is higher than the concentration of enzyme, and in... maximum rate of an enzyme mediated reaction, the substrate concentration ( [S] ) is increased until a constant rate of product formation is achieved. This is ...

Lipase

...fic position on the glycerol backbone of a lipid substrate (A1, A2 or A3). In the example of human pancreatic...lau, and R. Verger. 1998. Structural basis for the substrate selectivity of pancreatic lipases and some related proteins. Biochim Biophys Acta 1376:417-32. Diaz...

Lineweaver-Burke diagram

...is the maximum reaction velocity, and [ S ] is the substrate concentration . The Lineweaver-Burke plot is use...ion of the least important data points (those when substrate concentration is minimal). Thus, the Lineweaver-Burke plot is considered inferior to other models of...

Fungus

...e typically form a microscopic network within the substrate (food source) called the mycelium , through .... They develop into new mycelia, which invade some substrate and repeat the life cycle. These may become very large, often several square metres in size; fairy ...

Evolutionary developmental biology

...re of transcriptional regulation allows a rich substrate for morphological diversity, since variations in the level, pattern, or timing of gene expression , may provide more variation for natural selection to act upon, than changes in the gene product alone. References Sean B. Carroll, 2000 , "End...

Enzyme

...contains of one or more binding sites where the substrate (s) attach, and active site (s), where the amino ...plementary structural properties of the enzyme and substrate are responsible for this specificity (Fig. 2). Kinetics In 1913, Leonor Michaelis and Maud M...

Disulfide bond

... The human protein disulphide isomerase family: substrate interactions and functional properties...

Cooperativity

...tors that have multiple binding sites . When substrate bonds to the active site of one enzymatic subunit, the rest of the subunits are stimulated and become active....

Competitive inhibitor

...acts on the same active site as the normal enzyme substrate . The substrate molecules cannot enter the active site while the inhibitor is there, and inhibitors cannot enter the...

Cellulose

...s also used within the laboratory as a solid-state substrate for thin layer chromotography . Chemistry Cellulose monomers (beta-glucose) are linked together through 1,4 glycosidic bonds . Cellulose is a straight chain (no coiling occurs). In microfibrils , the multiple hydroxide groups hydrogen bond ...

Allostery

...(T) or relaxed (R), and that relaxed subunits bind substrate more readily than those in the tense state. The tw...vors the T state over the R state The binding of substrate to one subunit causes all other subunits to assume the R state, thereby enhancing their affinity for...

Allostery

...(T) or relaxed (R), and that relaxed subunits bind substrate more readily than those in the tense state. The tw...vors the T state over the R state The binding of substrate to one subunit causes all other subunits to assume the R state, thereby enhancing their affinity for...

Alcohol

...ng methanol from binding and thus its acting as a substrate . Chemistry of alcohols Preparation Laboratory There are three common methods: From alkyl halides : react with aqueous NaOH or KOH (mainly 1 alcohols). From aldehydes or ketones : reduction with sodium borohydride . ...

Active site

...ive site allow the recognition and binding of the substrate . The active site in many enzymes can be inhibite... blocked when a molecule chemically similar to the substrate binds to the active site but cannot be processed by the enzyme. In noncompetitive inhibition , the ...