Date published: 2026-4-16

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DHFR Activators

Dihydrofolate reductase (DHFR) is a pivotal enzyme that plays a key role in the metabolism of folate, an essential B vitamin. Specifically, DHFR facilitates the conversion of dihydrofolate (DHF) to tetrahydrofolate (THF). This conversion is essential for numerous biological processes, notably for the synthesis of purines and thymidylate, which are indispensable for DNA synthesis and repair. Given its significant function, the activity and regulation of DHFR have become subjects of extensive research. One facet of this investigation centers on the compounds that can modulate DHFR's activity, among which are the DHFR activators.

DHFR activators are chemical entities that upregulate or enhance the activity of DHFR. These activators do not simply bind to the enzyme but modulate its structure or functionality in a manner that makes the enzymatic process more efficient or accelerated. Such activators can either interact directly with the DHFR enzyme or might influence pathways and molecules that in turn regulate the enzyme's activity. While some of these activators are small organic molecules, others can be more complex in nature. The mechanisms through which these activators function can vary, and in many cases, they remain to be fully elucidated. Some activators might stabilize the DHFR in its active conformation, while others could increase its affinity for the substrate. Research into DHFR activators not only contributes to our understanding of enzyme regulation and modulation but also offers insight into the intricate processes of cellular metabolism and the role of folate in cellular function.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Methotrexate

59-05-2sc-3507
sc-3507A
100 mg
500 mg
$94.00
$213.00
33
(5)

DHFR inhibitor; cellular resistance often involves increased DHFR expression.

Aminopterin

54-62-6sc-202461
50 mg
$102.00
1
(1)

DHFR inhibitor; similar to methotrexate in its resistance mechanism.

Trimethoprim

738-70-5sc-203302
sc-203302A
sc-203302B
sc-203302C
sc-203302D
5 g
25 g
250 g
1 kg
5 kg
$67.00
$161.00
$255.00
$721.00
$3401.00
4
(1)

Inhibits bacterial DHFR; can indirectly affect mammalian DHFR expression.

Pyrimethamine

58-14-0sc-208190
sc-208190A
sc-208190B
1 g
5 g
25 g
$80.00
$238.00
$825.00
5
(0)

Inhibits protozoan DHFR; can indirectly affect mammalian DHFR expression.

Fluorouracil

51-21-8sc-29060
sc-29060A
1 g
5 g
$37.00
$152.00
11
(1)

Incorporates into RNA/DNA, leading to increased need for nucleotides and thus potentially increased DHFR expression.

Hydroxyurea

127-07-1sc-29061
sc-29061A
5 g
25 g
$78.00
$260.00
18
(1)

Inhibits ribonucleotide reductase, potentially leading to compensatory increased DHFR expression.

Raltitrexed

112887-68-0sc-219933
10 mg
$146.00
(0)

DHFR inhibitor; resistance can involve increased DHFR expression.

N-[4-[2-(2-Amino-4,7-dihydro-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]-L-glutamic Acid

137281-23-3sc-479733
250 mg
$330.00
1
(0)

Inhibits multiple enzymes including DHFR; resistance may be related to increased DHFR expression.

Folotyn

146464-95-1sc-364491
sc-364491A
10 mg
50 mg
$480.00
$1455.00
(0)

DHFR inhibitor; designed to be more efficient than methotrexate but can still result in resistance via increased DHFR expression.