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Table 2 Three-Dimensional <strong>Structure</strong>s Available for Trypanosomal <strong>Drug</strong> <strong>Design</strong><br />

(a) Glycolytic:<br />

(b) Other:<br />

Trypanosomatid PDB code Mammalian PDB code<br />

PGIa — — Porcine 1PGI[22]<br />

Aldolase — — Human b 1ALD[23]<br />

TIM T. brucei 5TIM[24] Human 1HTI[25]<br />

GAPDH T. brucei<br />

L.mexicana<br />

1GGA[26,27]<br />

[30]<br />

PGK — — Horse<br />

Pig<br />

Human c 3GPD[28,29]<br />

2PGK[31]—[32]<br />

PK — — Cat d 1PYK[33]<br />

TR T. cruzi 1NDA[34] HumanGR 3GRS[35]<br />

C. fasciculata 1TYT[36]<br />

1PPR[37]<br />

HGPRT — — Human 1HMP[38]<br />

VSG T. brucei 1VSG[39] No equivalent<br />

a Abbreviations: PGI = phosphoglucose isomerase, PGK = phosphoglycerate kinase, PK = pyruvate kinase, TR =<br />

trypanothione reductase; GR = glutathione reductase, HGPRT = hypoxanthine-guanine phosphoribosyl<br />

transferase, VSG = variable surface glycoprotein.<br />

b A isoenzyme, from muscle; other mammalian isoenzymes are B in liver and C in brain.<br />

c Muscle isoenzyme; a liver isoenzyme exists.<br />

dM1 isoenzyme, from muscle; mammals also have M2 in kidney, adipose tissue and lung, L in liver, and R in<br />

rood blood cells.<br />

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