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1S3Y

Structure Determination of Tetrahydroquinazoline Antifolates in Complex with Human and Pneumocystis carinii Dihydrofolate Reductase: Correlations of Enzyme Selectivity and Stereochemistry

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Dihydrofolate reductasepolymer20623918.51UniProt (P16184)
Pfam (PF00186)
Pneumocystis carinii
2B
(A)
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATEnon-polymer743.41Chemie (NAP)
3C
(A)
6-(OCTAHYDRO-1H-INDOL-1-YLMETHYL)DECAHYDROQUINAZOLINE-2,4-DIAMINEnon-polymer307.51Chemie (TQT)
4D
(A)
waterwater18.023Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight23918.5
Non-Polymers*Number of molecules2
Total formula weight1050.9
All*Total formula weight24969.4
*Water molecules are not included.

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PDB entries from 2025-06-18

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