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Dictionary » S » Substrate

Substrate

Definition

noun, plural: substrates

(geology)

A substratum or an underlying stratum.

(chemistry)

The substance acted upon by an enzyme.

(biology)

The earthy material in which an organism lives, or the surface or medium on which an organism grows or is attached.

(marine biology)

The material (e.g. dirt, rocks, sand, gravel) in the bottom of a marine habitat, or one that forms the bed of a stream (or of an aquarium); the source of food for some microorganisms.


Supplement

Word origin: L. Stratum = layer.

Related terms: substrate inhibition, substrate-level phosphorylation, substrate specificity, suicide substrate, enzyme-substrate complex.

Synonym: substratum.


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Results from our forum


Substrate crystalization

I read somewhere that when there is an excess concentration of substrates in a cell the substrates could become crystalized, i forgot where i read it maybe in my text book or on the web but im definite that was what it said. Could someone please confirm whether this information is true? I plan to us...

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by tom071095
Sun Jan 13, 2013 9:48 am
 
Forum: Molecular Biology
Topic: Substrate crystalization
Replies: 1
Views: 285

Re: Gluconeogenesis

... than to deaminate, hydrolyze, and oxidize alanine to yield the same product. Some small amount of glucose may be found in your cells with no substrate from gluconeogenesis of residual metabolic intermediates? Acetyl-CoA, Oxaloacetate, malate, PEP or isomerization from fructose?

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by bytesyzechic
Wed Nov 14, 2012 11:07 pm
 
Forum: Cell Biology
Topic: Gluconeogenesis
Replies: 6
Views: 1117

Gluconeogenesis

Also, there was production of some glucose in the control flasks with no substrate in them....why would this be??

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by beckyacoles
Tue Nov 13, 2012 5:56 pm
 
Forum: Cell Biology
Topic: Gluconeogenesis
Replies: 6
Views: 1117

Gluconeogenesis

The easiest thing will be to blame the compound(s), which is/are necessary for conversion of your substrate to pyruvate.

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by JackBean
Tue Nov 13, 2012 4:44 pm
 
Forum: Cell Biology
Topic: Gluconeogenesis
Replies: 6
Views: 1117

Questions on the Sodium Potassium Pump and Enzymes

... so surely kinase and phosphotase are involved because an ATPase only hydrolyses ATP? Also, we are just going over how Enzymes work with their substrates. Am I right in saying all enzymes work in the induced fit way where the enzyme is specific to it's substrate and involves the enzyme and ...

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by JoWillyTso
Mon Nov 05, 2012 5:50 pm
 
Forum: Cell Biology
Topic: Questions on the Sodium Potassium Pump and Enzymes
Replies: 3
Views: 926
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