Arginine derivatives Asparagine derivatives Aspartic acid derivatives Cysteine derivatives Glutamine derivatives Glutamic acid derivatives Glycine derivative Histidine derivatives Isoleucine derivatives Leucine derivatives Lysine derivatives Methionine derivatives Phenylalanine derivatives Proline derivatives Serine derivatives Threonine derivatives Tryptophan derivatives Tyrosine derivatives Valine derivatives Alanine derivatives Methionine derivatives BOC-amino acid Cbz-amino acid FMOC-amino acid α-Amino acid Other Amino Acid Protection Amino alcohol derivative Amino acid salts Amino acid esters Other amino acid derivatives Natural amino acids and derivatives
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Amino Acids and Derivatives

Arginine derivatives Asparagine derivatives Aspartic acid derivatives Cysteine derivatives Glutamine derivatives Glutamic acid derivatives Glycine derivative Histidine derivatives Isoleucine derivatives Leucine derivatives Lysine derivatives Methionine derivatives Phenylalanine derivatives Proline derivatives Serine derivatives Threonine derivatives Tryptophan derivatives Tyrosine derivatives Valine derivatives Alanine derivatives Methionine derivatives BOC-amino acid Cbz-amino acid FMOC-amino acid α-Amino acid Other Amino Acid Protection Amino alcohol derivative Amino acid salts Amino acid esters Other amino acid derivatives Natural amino acids and derivatives
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Amino acids and their derivatives belong to a compound containing both amino group and carboxyl group. They are presented in both the form of free-state and bound-state in vivo. Free amino acids are distributed in all kinds of animal cells and body fluids with the bound amino acids being the mainly basic components of proteins and peptides.

Natural amino acids act as colorless crystalline materials with relatively high melting points being mostly above 200 ℃. They are usually soluble in water but insoluble in non-polar organic solvents. However, tyrosine and cystine are insoluble in water; proline and hydroxyl proline are soluble in ethanol and ether. All amino acids are soluble in strong acid and alkali solution.

According to the polar characterization of the R group of the side chain of the α-amino acid; those 20 common amino acids that constitute protein can be divided into four groups:
① Amino acids with R group being non-polar; There are 8 kinds in total, wherein five kinds have aliphatic side chains, namely alanine, leucine, isoleucine, valine and proline; two kinds are aromatic amino acids, phenylalanine and tryptophan; one kind belongs to sulfur-containing amino acid, namely methionine; amino acids belonging to this group have lower water solubility than polar R-group amino acid; proline is generally different with α-amino acid, it is formed through the substitution of one hydrogen atom of the amino acid with the side chains of the α- amino acid, belonging actually to imino acid.
② Amino acids with polar but non-charged R group; There are seven kinds in total, namely serine, threonine and tyrosine with R group having hydroxy group; cysteine with R group having a mercapto group of cysteine; glutamine and asparagine with R-group containing amide group, another amino acid is glycine ; glycine molecule has no R group, but having certain polarity, and thus being classified into this group; the side chains in this group of amino acid contain unassociated polar groups and can form hydrogen bonds with water, and is easily soluble in water.
③Amino acids with R group being positively charged amino acids. There are three kinds in total, namely, lysine, arginine, and histidine; they carry positive charge at pH7.0 and are also known as alkaline amino acids.
④Amino acids with R group being negatively charged. There are two kinds in total, namely glutamate and aspartate; at pH7.0, the molecules are negatively charged, also known as acidic amino acids. The formula, abbreviations symbols and related constants of 20 kinds of amino acid structures can be seen from the table. In addition to the 20 common amino acids mentioned above, there are also diiodotyrosine, thyroxine, hydroxyproline and hydroxylysine existing in certain proteins. In addition to amino acids involved in protein composition, it has been also found of more than 200 kinds of other kinds amino acids in a variety of tissues and cells; these amino acids are mostly derivatives of those α- amino acid composition of proteins.

However, there are some β-, γ- or δ- amino acids and some amino acids belong to D-type amino acids such as [beta]-alanine, [gamma]-aminobutyric acid and the phenylalanine contained in the antibiotics gramicidin-S, the D-alanine and D-glutamate contained in Gram-positive bacteria cell wall. Some non-protein amino acids can act as metabolically important precursors or intermediates, wherein β-alanine is the precursors of vitamin pantothenic acid; ornithine, and citrulline are the precursors in the synthesis of arginine; [gamma]-aminobutyric acid is the chemical neurotransmitter. Plants contain a large amount of non-protein amino acids, belonging to plant secondary substances, such as theanine, canavanine, djenkolic acid, β- Cyanoalanine and so on.

In addition to 20 kinds of amino acids found in the body and animal protein products, it has been found of nearly 200 kinds of other kinds of amino acids in nature. Most of them have been discovered in the plant kingdom and have complex molecular structures with no relation with the protein metabolism. There have been less that have been seen in the animal kingdom with some of them being originated from the chemical modification of certain incorporated amino acids in the specific proteins, for example, the proline and lysine contained in collagen protein are often partially subject to re-hydroxylation of hydroxyproline and hydroxylysine; Another example is that there are often a small amount of lysine and histidine contained in actin and myosin protein containing hypermethylated εN methyl-lysine and 3N-histidine; it has been also found in the histone protein that the ∈ amino group contained in lysine is acetylated and the OH group in the serine is phosphorylated; thyroglobulin contains iodinated tyrosine and thyronine iodide; The heavy chain of τ myosin and the N-terminal of certain proteins contain pyroglutamate formed by glutamine; there also exists the cystine constituting of two cysteine molecules in the general protein.

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Structure:
Chemical Name:
N2-(1-Oxododecyl)-D-arginine
CAS:
1225433-34-0
MF:
C18H36N4O3
Structure:
Chemical Name:
3,4-Dimethoxy-L-Phenylalanine ethyl ester
MF:
C13H19NO4
Structure:
Chemical Name:
(S)-Methyl 2-(3,3-dimethylbutylamino)-3,3-dimethylbutanoate
CAS:
1052703-81-7
MF:
C13H27NO2
Structure:
Chemical Name:
N-[2-[2-(4-fluorophenyl)ethyl]-5-[[[(2S,4S)-4-[(3-pyridinylcarbonyl)thio]-2-pyrrolidinyl]methyl]amino]benzoyl]-L-Methionine 1-methylethyl ester
CAS:
345915-10-8
MF:
C34H41FN4O4S2
Chemical Name:
(2S,3S)-alpha-Hydroxy-Beta-Leu
Chemical Name:
Boc-D-(3-Thi)-Gly
Chemical Name:
Boc-L-beta-homo-Gln
Chemical Name:
Boc-L-beta-homo-Trp
Chemical Name:
D-Beta-homo-Phe.HCl
Chemical Name:
Fmoc-D-(3-Thi)-Gly
Chemical Name:
Fmoc-L-beta-homo-Gln
Chemical Name:
Fmoc-L-beta-homo-Trp
Chemical Name:
5-Chloro-2-(trifluoromethyl)-DL-phenylalanine, JRD, 97%
Structure:
Chemical Name:
N-Acetyl-beta-alanyl-L-histidyl-L-seryl-L-histidine
CAS:
820959-17-9
MF:
C20H28N8O7
Structure:
Chemical Name:
N2-(1-Oxohexadecyl)-L-lysyl-L-valyl-L-lysine 2,2,2-trifluoroacetate (1:2)
CAS:
623172-56-5
MF:
C37H67F6N5O9
Structure:
Chemical Name:
3-(2-Propenylseleno)-L-alanine
CAS:
180316-10-3
MF:
C6H11NO2Se
Structure:
Chemical Name:
(S)-2-tert-Butoxycarbonylamino-succinamic acid
MF:
C9H16N2O5
Structure:
Chemical Name:
3-(Ethoxycarbonyl-ethoxycarbonylmethyl-amino)-propionic acid ethyl ester
MF:
C12H21NO6
Structure:
Chemical Name:
sodium hydrogen N-(1-oxooctadecyl)-L-glutamate
CAS:
38517-23-6
MF:
C23H42NNaO5
Chemical Name:
N-(1-oxododecyl)-L-glutamic acid, compound with 2,2',2''-nitrilotrisethanol (1:1)
CAS:
53576-49-1
MF:
C17H31NO5.C6H15NO3
Structure:
Chemical Name:
DL-Alany-DL-serine
MF:
C6H12N2O4
Structure:
Chemical Name:
DL-Glutamic acid-1-14C
MF:
C5H9NO4
Structure:
Chemical Name:
N-(2-Hydroxyphenyl)glycine
MF:
C8H9NO3
Chemical Name:
Anti-NR2A (Glutamate receptor2A)
Chemical Name:
Antibody to BTK(Monoclonal Antibody to BTK)
Chemical Name:
Decyline
MF:
C10H21NO2
Structure:
Chemical Name:
D-Arginine ethyl ester hydrochloride
MF:
C8H19ClN4O2
Structure:
Chemical Name:
DL-hydroxylysine
MF:
C6H14N2O3
Chemical Name:
Phenylglycine dane salt
Chemical Name:
Dihydrophenylglycine dane salt
Chemical Name:
COCOYL GLUTAMIC ACID
Structure:
Chemical Name:
PHENYLALANINE
CAS:
62056-68-2
MF:
C9H11NO2
Structure:
Chemical Name:
(R)-2-Hydroxyethyl-L-cysteine
CAS:
97170-10-0
MF:
C5H11NO3S
Structure:
Chemical Name:
SE-METHYLSELENOCYSTEINE
MF:
C4H9NO2Se
Structure:
Chemical Name:
DL-THREO-3-PHENYLSERINE HYDRATE, 98%
CAS:
207605-47-8
MF:
C9H11NO3.H2O
Structure:
Chemical Name:
Ethyl N-(2.3-dichloro-6-nitrobenzyl)glycine
CAS:
70380-50-6
MF:
C11H12Cl2N2O4
Chemical Name:
D,L-α-HYDROXYMETHIONINE CALCIUM
Chemical Name:
PotassiuM DL-serine ester hydrochloride
Structure:
Chemical Name:
L-4-Hydroxyisoleucine
CAS:
6001-78-8
MF:
C6H13NO3
Chemical Name:
L-Glutamine-α-ketoglutarate
MF:
C10H16N2O8
Chemical Name:
(TRANS)-4-PHENYL-L-PROLINE,MONOHYDROCHLORIDE SALT
Structure:
Chemical Name:
N-Cbz-D-Phenylalanine
MF:
C17H17NO4
Chemical Name:
D-4-TrifluoroMethylphe
Structure:
Chemical Name:
AC-LYS-OME HCL
CAS:
20911-93-7
MF:
C9H19ClN2O3
Chemical Name:
Bendazac Lysine Impurity A
Chemical Name:
ABRINE, L-(P)
Structure:
Chemical Name:
3-Pyridinecarboxylicacid,5-(methylamino)-(9CI)
CAS:
91702-88-4
MF:
C7H8N2O2
Structure:
Chemical Name:
L-TRYPTOPHANOL OXALATE
CAS:
2899-30-1
MF:
C13H16N2O5
Structure:
Chemical Name:
BOC-D-2-AMINO-4-BROMO-4-PENTENOIC ACID
CAS:
149930-92-7
MF:
C10H16BrNO4
Structure:
Chemical Name:
L-Lysine sulphate
CAS:
60343-69-3
Structure:
Chemical Name:
N-[(3beta)-3-Hydroxy-28-oxoolean-12-en-28-yl]-L-alanine
CAS:
851475-40-6
MF:
C33H53NO4
Structure:
Chemical Name:
Cyclopropanecarboxylic acid, 1-amino-2-ethenyl-, ethyl ester, hydrochloride (1:1), (1R,2S)-
CAS:
259214-56-7
MF:
C8H13NO2.ClH
Chemical Name:
COBALT AMINO ACID
Chemical Name:
LIQUID AMINO ACIDCONCENTRATION
Chemical Name:
Rabbit anti-HisX6/HRP