Structure of PDB 3irm Chain B

Receptor sequence
>3irmB (length=519) Species: 5693 (Trypanosoma cruzi) [Search protein sequence]
LFKIRMPETVAEGTRLALRAFSLVVAVDEHGGIGDGRSIPWNVPEDMKFF
RDLTTKLRGKNVKPSPAKRNAVVMGRKTWDSIPPKFRPLPGRLNVVLSST
LTTQHLLDGLPDEEKRNLHADSIVAVNGGLEQALRLLASPNYTPSIETVY
CIGGGSVYAEALRPPCVHLLQAIYRTTIRASESSCSVFFRVPESGTEAAA
GIEWQRETISEELTSANGNETKYYFEKLIPRNREEEQYLSLVDRIIREGN
VKHDRTGVGTLSIFGAQMRFSLRNNRLPLLTTKRVFWRGVCEELLWFLRG
ETYAKKLSDKGVHIWDDNGSRAFLDSRGLTEYEEMDLGPVYGFQWRHFGA
AYTHHDANYDGQGVDQIKAIVETLKTNPDDRRMLFTAWNPSALPRMALPP
CHLLAQFYVSNGELSCMLYQRSCDMGLGVPFNIASYALLTILIAKATGLR
PGELVHTLGDAHVYSNHVEPCNEQLKRVPRAFPYLVFRREREFLEDYEEG
DMEVIDYAPYPPISMKMAV
3D structure
PDB3irm Structural basis of antifolate inhibition of Trypanosoma cruzi Dihydrofolate Reductase-Thymidylate Synthase
ChainB
Resolution2.1 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) I41 D48 E295 W317 Y343 C403 R423 D426
Catalytic site (residue number reindexed from 1) I39 D46 E293 W315 Y341 C401 R421 D424
Enzyme Commision number 1.5.1.3: dihydrofolate reductase.
2.1.1.45: thymidylate synthase.
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 1CY B V26 V27 A28 R39 D48 F52 T80 I84 I154 V24 V25 A26 R37 D46 F50 T78 I82 I152
Gene Ontology
Molecular Function
GO:0004146 dihydrofolate reductase activity
GO:0004799 thymidylate synthase activity
GO:0008168 methyltransferase activity
GO:0016491 oxidoreductase activity
GO:0016741 transferase activity, transferring one-carbon groups
Biological Process
GO:0006231 dTMP biosynthetic process
GO:0006730 one-carbon metabolic process
GO:0009165 nucleotide biosynthetic process
GO:0032259 methylation
GO:0046654 tetrahydrofolate biosynthetic process
Cellular Component
GO:0005739 mitochondrion
GO:0005829 cytosol

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Cellular Component
External links
PDB RCSB:3irm, PDBe:3irm, PDBj:3irm
PDBsum3irm
PubMed
UniProtQ27793|DRTS_TRYCR Bifunctional dihydrofolate reductase-thymidylate synthase

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