Publication Date:
1980-10-17
Description:
The crystal and molecular structure of folic acid dihydrate has been determined by x-ray diffraction. Folic acid is in an extended conformation with the pteridine ring in the keto form. The C(4) oxygen and N(10) atoms are on the same side of the molecule, hydrogen-bonded to the same water. This conformation has the pteridine rotated approximately 180 degrees away from the orientation of the pteridine ring of methotrexate bound to dihydrofolate reductase. The folic acid pteridine and phenyl rings interact in a stacking manner which is suggestive of the type of associations these groups could form in a complex of folate, dihydrofolate reductase, and reduced nicotinamide adenine dinucleotide phosphate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mastropaolo, D -- Camerman, A -- Camerman, N -- CA-15879/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1980 Oct 17;210(4467):334-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7423195" target="_blank"〉PubMed〈/a〉
Keywords:
Binding Sites
;
Crystallography
;
*Folic Acid
;
Molecular Conformation
;
Protein Conformation
;
Tetrahydrofolate Dehydrogenase
;
X-Ray Diffraction
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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