Structure of PDB 3hbb Chain D

Receptor sequence
>3hbbD (length=507) Species: 5693 (Trypanosoma cruzi) [Search protein sequence]
MSLFKIRMPETVAEGTRLALRAFSLVVAVDERGGIGDGRSIPWNVPEDMK
FFRDVTTKLRGKNVKPSPAKRNAVVMGRKTWDSIPPKFRPLPGRLNVVLS
STLTTQHLLDGLHADSIVAVNGGLEQALQLLASPNYTPSIETVYCIGGGS
VYAEALRPPCVHLLQAIYRTTIRASESSCSVFFRVPESGTEAAAGIEWQR
ETISEELTSANGNETKYYFEKLIPRNREEEQYLSLVDRIIREGNVKHDRT
GVGTLSIFGAQMRFSLRNNRLPLLTTKRVFWRGVCEELLWFLRGETYAKK
LSDKGVHIWDDNGSRAFLDSRGLTEYEEMDLGPVYGFQWRHFGAAYTHHD
ANYDGQGVDQIKAIVETLKTNPDDRRMLFTAWNPSALPRMALPPCHLLAQ
FYVSNGELSCMLYQRSCDMGLGVPFNIASYALLTILIAKATGLRPGELVH
TLGDAHVYSNHVEPCNEQLKRVPRAFPYLVFRREREFLEDYEEGDMEVID
YAPYPPI
3D structure
PDB3hbb Structures of dihydrofolate reductase-thymidylate synthase of Trypanosoma cruzi in the folate-free state and in complex with two antifolate drugs, trimetrexate and methotrexate.
ChainD
Resolution3.0 Å
3D
structure
Catalytic site residues are labeled in the structure
[Spin on]
[Spin off]
[Reset orientation]

[High quality]
[Low quality]

[White background]
[Black background]

[Download]
[Download structure with residue number starting from 1]
Enzymatic activity
Catalytic site (original residue number in PDB) I41 D48 E295 W317 Y343 C403 R423 D426
Catalytic site (residue number reindexed from 1) I41 D48 E287 W309 Y335 C395 R415 D418
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 NAP D A28 I35 G38 R39 I41 G77 R78 K79 T80 L99 S100 S101 T102 G130 I154 G156 G157 S158 A28 I35 G38 R39 I41 G77 R78 K79 T80 L99 S100 S101 T102 G122 I146 G148 G149 S150
BS02 TMQ D V26 V27 I41 D48 M49 F52 I84 P85 I154 V26 V27 I41 D48 M49 F52 I84 P85 I146
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

View graph for
Molecular Function
View graph for
Biological Process
View graph for
Cellular Component
External links
PDB RCSB:3hbb, PDBe:3hbb, PDBj:3hbb
PDBsum3hbb
PubMed19564691
UniProtQ27793|DRTS_TRYCR Bifunctional dihydrofolate reductase-thymidylate synthase

[Back to BioLiP]