Amino Acids Flashcards
building blocks of proteins
Amino acids
organic molecule containing both carboxyl acid and amino functional groups
Amino acids
can be grouped as nonpolar,polar,acidic,basic
Amino acids
capable of being converted to glucose/sugar
Glucogenic Amino acid
capable of being converted to ketone
Ketogenic Amino acid
a process of changing/deviating from the native conformation
Denaturation
Denaturing agents:
- Heat
- Extreme pH
- Mercaptoethanol
constitute of 70% of the organic matter of a cell
Proteins
are polymers of amino acids linked by peptide bonds
Proteins
globular:
globule (ex.albumin)
fibrous:
large
structural protein;made up of 2AA
Collagen
blood vessels
Elastin
storage proteins, muscles
Myoglobin
transport proteins, carries O2 blood
Hemoglobin
hormones;controlling blood sugar
Insulin & Glucagon
antibodies
Immunoglobulins
Isolation/Sequencing of Proteins
- By polarity: salting out, precipitation
- By charge
- By size
technique of separating the components, or solutes, of a mixture on the basis of the relative amounts of each solute distributed between a moving fluid stream
Chromatography
_______phase may be either a liquid or a gas
Mobile phase
________phase is either a solid or a liquid
Contiguous stationary phase
Mobile phase: Non-polar
Stationary phase: Polar
Normal
Mobile phase: Polar
Stationary phase: Non-polar
Reverse
Xanthoproteic Test: Reagent
HNO3
Xanthoproteic Test: Positive
Yellow or Orange ppt
Xanthoproteic Test:Presence
Phenylalanine
Fohl’s Test: Reagent
PbCH3COO
Fohl’s Test:Positive
Black ppt (PbS)
Fohl’s Test:Presence
Methionine
Hopkin-Cole Test:Reagent
Glyoxylic acid
Hopkin-Cole Test:Positive
Violet ring
Hopkin-Cole Test:Presence
Tryptophan
Ninhydrin Test:Reagent
Ninhydrin rgt
Ninhydrin Test:Positive
Primary: Violet
Secondary: Yellow
Ninhydrin Test:Presence
General test for free amino acids
Millon-Nase:Reagent
Hg
Millon-Nase:Positive
Pink/old Rose
Millon-Nasse:Presence
Phenolic rings, Tyrosine
Sakaguchi Test:Reagent
a-naphthol
Sakaguchi Test:Positive
Red/wine color
Sakaguchi Test:Presence
Arginine
protein made by the liver
Albumin
it keeps fluid from leaking out of blood vessels, nourishes tissues and transports hormones, vitamin, drug and other substances throughout the body
Albumin
Disease related to albumin deficiency
- Severe liver disease
- Kidney disease
family of proteins found in grains like wheat, rye, spelt and barley
Gluten
two main proteins found in gluten
Glutenin and Gliadin
most severe form of gluten intolerance
Celiac disease
autoimmune disease that involves the body from treating gluten as an invader
Celiac disease
Common sources of gluten:
- Wheat
- Spelt
- Rye
- Barley
- Bread
- Pasta
- Cereals
- Beer
- Pastries
When wheat flour is washed this process removes the starch that when tested with I2 solution _____results give ______ solution
Positive results give violet or purple solution
The ________ material left is the gluten
Insoluble material
vital to oxygen transport and storage in vertebrates
Myoglobin and Hemoglobin
dominant in muscles
Myoglobin
dominant in blood
Hemoglobin
myoglobin can be isolated by using _________precipitation
ammonium sulfate precipitation
a common technique used to identify compounds, determine purities
Thin layer chromatography
also used to separate or differentiate substances according to their polarity
Thin layer chromatography
semi-quantitative method
Thin layer chromatography
special finely ground matrix (silica gel, alumina) is coated on a glass plate or a metal or plastic film as a thin layer
Stationary phase: Thin layer chromatography