Structure of PDB 4kya Chain H

Receptor sequence
>4kyaH (length=491) Species: 5811 (Toxoplasma gondii) [Search protein sequence]
KPVCLVVAMTPKRGIGINNGLPWPHLTTDFKHFSRVTKTFNAVVMGRKTW
ESMPRKFRPLVDRLNIVVSSSLKVCASLPAALSLLEEEYKDSVDQIFVVG
AGLYEAALSLGVASHLYITRVAREFPCDVFFPAFPGDDILSNKEATYRPI
FISKTFSDNGVPYDFVVLEKRSSAAAIAPVLAWMDEEDKELIRAVPHVHF
RGHEEFQYLDLIADIINNGRTMDDRTGVGVISKFGCTMRYSLDQAFPLLT
TKRVFWKGVLEELLWFIRGDTNANHLSEKGVKIWDKNVTREFLDSRNLPH
REVGDIGPGYGFQWRHFGAAYKDMHTDYTGQGVDQLKNVIQMLRTNPTDR
RMLMTAWNPAALDEMALPPCHLLCQFYVNDQKELSCIMYQRSCDVGLGVP
FNIASYSLLTLMVAHVCNLKPKEFIHFMGNTHVYTNHVEALKEQLRREPR
PFPIVNILNKERIKEIDDFTAEDFEVVGYVPHGRIQMEMAV
3D structure
PDB4kya Discovery of potent and selective inhibitors of Toxoplasma gondii thymidylate synthase for opportunistic infections.
ChainH
Resolution3.263 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) L23 D31 E381 W403 Y429 C489 R510 D513
Catalytic site (residue number reindexed from 1) L21 D29 E262 W284 Y310 C370 R391 D394
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 UMP H R469 R470 R350 R351
BS02 UMP H C489 H490 Q509 R510 S511 D513 N521 H551 Y553 C370 H371 Q390 R391 S392 D394 N402 H432 Y434
BS03 1UG H I402 W403 D513 L516 G517 F520 M608 I283 W284 D394 L397 G398 F401 M489 BindingDB: IC50=36nM
BS04 NDP H A10 I17 N21 G22 R81 K82 T83 S86 S103 S104 G153 A154 A8 I15 N19 G20 R47 K48 T49 S52 S69 S70 G100 A101
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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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:4kya, PDBe:4kya, PDBj:4kya
PDBsum4kya
PubMed24470841
UniProtQ07422|DRTS_TOXGO Bifunctional dihydrofolate reductase-thymidylate synthase

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