Publication

STRUCTURE OF THE COMPLEX BETWEEN TRYPANOSOMAL TRIOSEPHOSPHATE ISOMERASE AND N-HYDROXY-4-PHOSPHONO-BUTANAMIDE - BINDING AT THE ACTIVE-SITE DESPITE AN OPEN FLEXIBLE LOOP CONFORMATION

VERLINDE, CLMJ., WITMANS, CJ., PIJNING, T., KALK, KH., HOL, WGJ., CALLENS, M. & OPPERDOES, FR., Dec-1992, In : Protein Science. 1, 12, p. 1578-1584 7 p.

Research output: Contribution to journalArticleAcademicpeer-review

APA

VERLINDE, CLMJ., WITMANS, CJ., PIJNING, T., KALK, KH., HOL, WGJ., CALLENS, M., & OPPERDOES, FR. (1992). STRUCTURE OF THE COMPLEX BETWEEN TRYPANOSOMAL TRIOSEPHOSPHATE ISOMERASE AND N-HYDROXY-4-PHOSPHONO-BUTANAMIDE - BINDING AT THE ACTIVE-SITE DESPITE AN OPEN FLEXIBLE LOOP CONFORMATION. Protein Science, 1(12), 1578-1584.

Author

VERLINDE, CLMJ ; WITMANS, CJ ; PIJNING, T ; KALK, KH ; HOL, WGJ ; CALLENS, M ; OPPERDOES, FR. / STRUCTURE OF THE COMPLEX BETWEEN TRYPANOSOMAL TRIOSEPHOSPHATE ISOMERASE AND N-HYDROXY-4-PHOSPHONO-BUTANAMIDE - BINDING AT THE ACTIVE-SITE DESPITE AN OPEN FLEXIBLE LOOP CONFORMATION. In: Protein Science. 1992 ; Vol. 1, No. 12. pp. 1578-1584.

Harvard

VERLINDE, CLMJ, WITMANS, CJ, PIJNING, T, KALK, KH, HOL, WGJ, CALLENS, M & OPPERDOES, FR 1992, 'STRUCTURE OF THE COMPLEX BETWEEN TRYPANOSOMAL TRIOSEPHOSPHATE ISOMERASE AND N-HYDROXY-4-PHOSPHONO-BUTANAMIDE - BINDING AT THE ACTIVE-SITE DESPITE AN OPEN FLEXIBLE LOOP CONFORMATION', Protein Science, vol. 1, no. 12, pp. 1578-1584.

Standard

STRUCTURE OF THE COMPLEX BETWEEN TRYPANOSOMAL TRIOSEPHOSPHATE ISOMERASE AND N-HYDROXY-4-PHOSPHONO-BUTANAMIDE - BINDING AT THE ACTIVE-SITE DESPITE AN OPEN FLEXIBLE LOOP CONFORMATION. / VERLINDE, CLMJ; WITMANS, CJ; PIJNING, T; KALK, KH; HOL, WGJ; CALLENS, M; OPPERDOES, FR.

In: Protein Science, Vol. 1, No. 12, 12.1992, p. 1578-1584.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

VERLINDE CLMJ, WITMANS CJ, PIJNING T, KALK KH, HOL WGJ, CALLENS M et al. STRUCTURE OF THE COMPLEX BETWEEN TRYPANOSOMAL TRIOSEPHOSPHATE ISOMERASE AND N-HYDROXY-4-PHOSPHONO-BUTANAMIDE - BINDING AT THE ACTIVE-SITE DESPITE AN OPEN FLEXIBLE LOOP CONFORMATION. Protein Science. 1992 Dec;1(12):1578-1584.


BibTeX

@article{031fa93f771d47babc89e31eb4fcf417,
title = "STRUCTURE OF THE COMPLEX BETWEEN TRYPANOSOMAL TRIOSEPHOSPHATE ISOMERASE AND N-HYDROXY-4-PHOSPHONO-BUTANAMIDE - BINDING AT THE ACTIVE-SITE DESPITE AN OPEN FLEXIBLE LOOP CONFORMATION",
abstract = "The structure of triosephosphate isomerase from Trypanosoma brucei complexed with the competitive inhibitor N-hydroxy-4-phosphono-butanamide was determined by X-ray crystallography to a resolution of 2.84 angstrom. Full occupancy binding of the inhibitor is observed only at one of the active sites of the homodimeric enzyme where the flexible loop is locked in a completely open conformation by crystal contacts. There is evidence that the inhibitor also binds to the second active site of the enzyme, but with low occupancy. The hydroxamyl group of the inhibitor forms hydrogen bonds to the side chains of Asn 11, Lys 13, and His 95, whereas each of its three methylene units is involved in nonpolar interactions with the side chain of the flexible loop residue Ile 172. Interactions between the hydroxamyl and the catalytic base Glu 167 are absent. The binding of this phosphonate inhibitor exhibits three unusual features: (1) the flexible loop is open, in contrast with the binding mode observed in eight other complexes between triosephosphate isomerase and various phosphate and phosphonate compounds; (2) compared with these complexes the present structure reveals a 1.5-angstrom shift of the anion-binding site; (3) this is the first phosphonate inhibitor that is not forced by the enzyme into an eclipsed conformation about the P-CH2 bond. The results are discussed with respect to an ongoing drug design project aimed at the selective inhibition of glycolytic enzymes of T brucei.",
keywords = "N-HYDROXY-4-PHOSPHONO-BUTANAMIDE, TRIOSEPHOSPHATE ISOMERASE, BRUCEI-BRUCEI, INTERMEDIATE, PHOSPHATE, CATALYSIS, PHOSPHOGLYCOLOHYDROXAMATE, CRYSTALLOGRAPHY, DETECTOR, ENZYMES, SULFATE, ANALOG",
author = "CLMJ VERLINDE and CJ WITMANS and T PIJNING and KH KALK and WGJ HOL and M CALLENS and FR OPPERDOES",
year = "1992",
month = dec,
language = "English",
volume = "1",
pages = "1578--1584",
journal = "Protein Science",
issn = "0961-8368",
publisher = "Wiley",
number = "12",

}

RIS

TY - JOUR

T1 - STRUCTURE OF THE COMPLEX BETWEEN TRYPANOSOMAL TRIOSEPHOSPHATE ISOMERASE AND N-HYDROXY-4-PHOSPHONO-BUTANAMIDE - BINDING AT THE ACTIVE-SITE DESPITE AN OPEN FLEXIBLE LOOP CONFORMATION

AU - VERLINDE, CLMJ

AU - WITMANS, CJ

AU - PIJNING, T

AU - KALK, KH

AU - HOL, WGJ

AU - CALLENS, M

AU - OPPERDOES, FR

PY - 1992/12

Y1 - 1992/12

N2 - The structure of triosephosphate isomerase from Trypanosoma brucei complexed with the competitive inhibitor N-hydroxy-4-phosphono-butanamide was determined by X-ray crystallography to a resolution of 2.84 angstrom. Full occupancy binding of the inhibitor is observed only at one of the active sites of the homodimeric enzyme where the flexible loop is locked in a completely open conformation by crystal contacts. There is evidence that the inhibitor also binds to the second active site of the enzyme, but with low occupancy. The hydroxamyl group of the inhibitor forms hydrogen bonds to the side chains of Asn 11, Lys 13, and His 95, whereas each of its three methylene units is involved in nonpolar interactions with the side chain of the flexible loop residue Ile 172. Interactions between the hydroxamyl and the catalytic base Glu 167 are absent. The binding of this phosphonate inhibitor exhibits three unusual features: (1) the flexible loop is open, in contrast with the binding mode observed in eight other complexes between triosephosphate isomerase and various phosphate and phosphonate compounds; (2) compared with these complexes the present structure reveals a 1.5-angstrom shift of the anion-binding site; (3) this is the first phosphonate inhibitor that is not forced by the enzyme into an eclipsed conformation about the P-CH2 bond. The results are discussed with respect to an ongoing drug design project aimed at the selective inhibition of glycolytic enzymes of T brucei.

AB - The structure of triosephosphate isomerase from Trypanosoma brucei complexed with the competitive inhibitor N-hydroxy-4-phosphono-butanamide was determined by X-ray crystallography to a resolution of 2.84 angstrom. Full occupancy binding of the inhibitor is observed only at one of the active sites of the homodimeric enzyme where the flexible loop is locked in a completely open conformation by crystal contacts. There is evidence that the inhibitor also binds to the second active site of the enzyme, but with low occupancy. The hydroxamyl group of the inhibitor forms hydrogen bonds to the side chains of Asn 11, Lys 13, and His 95, whereas each of its three methylene units is involved in nonpolar interactions with the side chain of the flexible loop residue Ile 172. Interactions between the hydroxamyl and the catalytic base Glu 167 are absent. The binding of this phosphonate inhibitor exhibits three unusual features: (1) the flexible loop is open, in contrast with the binding mode observed in eight other complexes between triosephosphate isomerase and various phosphate and phosphonate compounds; (2) compared with these complexes the present structure reveals a 1.5-angstrom shift of the anion-binding site; (3) this is the first phosphonate inhibitor that is not forced by the enzyme into an eclipsed conformation about the P-CH2 bond. The results are discussed with respect to an ongoing drug design project aimed at the selective inhibition of glycolytic enzymes of T brucei.

KW - N-HYDROXY-4-PHOSPHONO-BUTANAMIDE

KW - TRIOSEPHOSPHATE ISOMERASE

KW - BRUCEI-BRUCEI

KW - INTERMEDIATE

KW - PHOSPHATE

KW - CATALYSIS

KW - PHOSPHOGLYCOLOHYDROXAMATE

KW - CRYSTALLOGRAPHY

KW - DETECTOR

KW - ENZYMES

KW - SULFATE

KW - ANALOG

M3 - Article

VL - 1

SP - 1578

EP - 1584

JO - Protein Science

JF - Protein Science

SN - 0961-8368

IS - 12

ER -

ID: 6334474