Hexa‐histidin tag position influences disulfide structure but not binding behavior of in vitro folded N‐terminal domain of rat corticotropin‐releasing factor receptor type 2a

The oxidative folding, particularly the arrangement of disulfide bonds of recombinant extracellular N‐terminal domains of the corticotropin‐releasing factor receptor type 2a bearing five cysteines (C2 to C6), was investigated. Depending on the position of a His‐tag, two types of disulfide patterns w...

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Veröffentlicht in:Protein science 2004-09, Vol.13 (9), p.2470-2475
Hauptverfasser: Klose, Jana, Wendt, Norbert, Kubald, Sybille, Krause, Eberhard, Fechner, Klaus, Beyermann, Michael, Bienert, Michael, Rudolph, Rainer, Rothemund, Sven
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container_end_page 2475
container_issue 9
container_start_page 2470
container_title Protein science
container_volume 13
creator Klose, Jana
Wendt, Norbert
Kubald, Sybille
Krause, Eberhard
Fechner, Klaus
Beyermann, Michael
Bienert, Michael
Rudolph, Rainer
Rothemund, Sven
description The oxidative folding, particularly the arrangement of disulfide bonds of recombinant extracellular N‐terminal domains of the corticotropin‐releasing factor receptor type 2a bearing five cysteines (C2 to C6), was investigated. Depending on the position of a His‐tag, two types of disulfide patterns were found. In the case of an N‐terminal His‐tag, the disulfide bonds C2–C3 and C4–C6 were found, leaving C5 free, whereas the C‐terminal position of the His‐tag led to the disulfide pattern C2–C5 and C4–C6, and leaving C3 free. The latter pattern is consistent with the disulfide arrangement of the extracellular N‐terminal domain of the corticotropin‐releasing factor (CRF) receptor type 1, which has six cysteines (C1 to C6) and in which C1 is paired with C3. However, binding data of the two differently disulfide‐bridged domains show no significant differences in binding affinities to selected ligands, indicating the importance of the C‐terminal portion of the N‐terminal receptor domains, particularly the disulfide bond C4–C6 for ligand binding.
doi_str_mv 10.1110/ps.04835904
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Depending on the position of a His‐tag, two types of disulfide patterns were found. In the case of an N‐terminal His‐tag, the disulfide bonds C2–C3 and C4–C6 were found, leaving C5 free, whereas the C‐terminal position of the His‐tag led to the disulfide pattern C2–C5 and C4–C6, and leaving C3 free. The latter pattern is consistent with the disulfide arrangement of the extracellular N‐terminal domain of the corticotropin‐releasing factor (CRF) receptor type 1, which has six cysteines (C1 to C6) and in which C1 is paired with C3. However, binding data of the two differently disulfide‐bridged domains show no significant differences in binding affinities to selected ligands, indicating the importance of the C‐terminal portion of the N‐terminal receptor domains, particularly the disulfide bond C4–C6 for ligand binding.</abstract><cop>Bristol</cop><pub>Cold Spring Harbor Laboratory Press</pub><pmid>15295109</pmid><doi>10.1110/ps.04835904</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record>
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subjects ACN, acetonitrile
Affinity Labels - chemistry
Affinity Labels - metabolism
affinity tag
Amino Acid Sequence
Animals
BSA, bovine serum albumin
CDAP, cyanodimethylaminopyridinium tetrafluoroborate
Corticotropin-Releasing Hormone - metabolism
corticotropin‐releasing factor receptor
CRF, corticotropin‐releasing factor
Cysteine - chemistry
Disulfides - chemistry
DTT, dithiothreitol
GPCR, G protein–coupled receptor
GST, glutathione S‐transferase
GuHCl, guanidinium hydrochloride
Histidine - chemistry
Histidine - genetics
Histidine - metabolism
HPLC, high‐performance liquid chromatography
IAA, iodoacetamide
MALDI, matrix‐assisted laser desorption/ionization
MBP, maltose binding protein
Molecular Sequence Data
MS, mass spectrometry
NT, N terminus
Oligopeptides - chemistry
Oligopeptides - genetics
Oligopeptides - metabolism
Protein Binding
Protein Folding
Protein Structure, Tertiary
Rats
Receptors, Corticotropin-Releasing Hormone - chemistry
Receptors, Corticotropin-Releasing Hormone - genetics
Receptors, Corticotropin-Releasing Hormone - metabolism
Recombinant Proteins - chemistry
Recombinant Proteins - genetics
Recombinant Proteins - metabolism
RP, reversed‐phase
Sequence Alignment
SPA, scintillation proximity assay
TOF, time of flight
Urocortins
title Hexa‐histidin tag position influences disulfide structure but not binding behavior of in vitro folded N‐terminal domain of rat corticotropin‐releasing factor receptor type 2a
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