Project A03 – Characterizing the molecular interactions of Y1 and Y2 receptors with NPY

In the proposed project, distance constraints of complexes between Y1 and Y2 receptors and NPY will be derived by NMR, using the paramagnetic relaxation enhancement (PRE) effect, as well as (photo-) chemical cross-linking combined with mass spectrometry (MS). The experimentally obtained constraints will be used to refine computational models of the NPY in the Y1 and the Y2 binding pocket. The ultimate goal is to characterize the binding modes and dynamics of peptides in interaction with Y receptors, which is a prerequisite for the development of highly selective drugs.


Prof. Dr. Andrea Sinz (Project Leader)

Martin Luther University Halle-Wittenberg
Faculty of Natural Sciences I, Institute of Pharmacy
Kurt-Mothes-Str. 3a, D-06108 Halle/Saale

Phone +49 345 55 25170

Jeannette Laugwith (PhD Student)

Leipzig University, Faculty of Medicine
Institute of Medical Physics and Biophysics
Härtelstraße 16 – 18, 04107 Leipzig

Claudio Iacobucci (PostDoc)

Martin Luther University Halle-Wittenberg
Faculty of Natural Sciences I, Institute of Pharmacy
Kurt-Mothes-Str. 3a, D-06108 Halle/Saale


  • Bruker Avance III 600 MHz NMR spectrometer
  • Bruker Avance I 700 MHz NMR spectrometer
  • New Avance Neo Console for 700 MHz NMR spectrometer and 2 solids probes
  • LTQ-Orbitrap XLMassspectrometer incl. ESI and Nano-ESI
  • Orbitrap Fusion Tribrid-Massspectrometer 
  • HPLC-System (Agilent 1200)
  • Nano-HPLC-System (Ultimate 3000, Dionex)
  • Orbitrap Q-Exactive Plus-Massspectrometer 
  • High Mass Q-TOF 2-Massspectrometer (MSVision)
  • MALDI-TOF/TOF – Massspectrometer (Ultraflex III, Bruker Daltonik)
  • FPLC-Systems (ÄKTA Prime, ÄKTA FPLC and ÄKTA Purev


Schmidt P, Vogel A, Schwarze B, Seufert F, Licha K, Wycisk V, Kilian W, Hildebrand PW, Mitschang L. Towards Probing Conformational States of Y2 Receptor Using Hyperpolarized 129Xe NMR. Molecules. 2023; 28(3):1424.

Tänzler D, Kipping M, Lederer M, Günther WF, Arlt C, Hüttelmaier S, Merken-schlager A, Sinz A. Effects of theophylline on ADCY5 activation-From cellular studies to improved therapeutic options for ADCY5-related dyskinesia patients. PLoS One. 2023; 18:e0282593.

Wygas MM, Laugwitz JM, Schmidt P, Elgeti M, Kaiser A. Dynamics of the Second Extracellular Loop Control Transducer Coupling of Peptide-Activated GPCRs. Int J Mol Sci. 2023 Jul 30;24(15):12197. doi: 10.3390/ijms241512197. PMID: 37569573; PMCID: PMC10419011.

Wei AAJ, Iacobucci C, Schultze W, Ihling CH, Arlt C, Sinz A. Different Oligomeric States of the Tumor Suppressor p53 Show Identical Binding Behavior towards the S100β Homodimer. Chembiochem. 2022 Jun 3;23(11):e202100665. doi: 10.1002/cbic.202100665. Epub 2022 Apr 13. PMID: 35333001

Piersimoni L, Kastritis PL, Arlt C, Sinz A. Cross-Linking Mass Spectrometry for Investigating Protein Conformations and Protein-Protein Interactions – A Method for All Seasons. Chemical Reviews Article ASAP. DOI: 10.1021/acs.chemrev.1c00786.

Krug U, Gloge A, Schmidt P, Becker-Baldus J, Bernhard F, Kaiser A, Montag C, Gauglitz M, Vishnivetskiy SA, Gurevich VV, Beck-Sickinger AG, Glaubitz C, Huster D. The Conformational Equilibrium of the Neuropeptide Y2 Receptor in Bilayer Membranes. Angew Chem Int Ed Engl. 2020 Aug 13. doi: 10.1002/anie.202006075. Epub ahead of print. PMID: 32790043

Laugwitz JM, Haeri HH, Kaiser A, Krug U, Hinderberger D, Beck-Sickinger AG, Schmidt P. Probing the Y2 Receptor on Transmembrane, Intra- and Extra-Cellular Sites for EPR Measurements. molecules. 2020, 25(18), 4143.

Pacull EM, Sendker F, Bernhard F, Scheidt HA, Schmidt P, Huster D, Krug U. Integration of Cell-Free Expression and Solid-State NMR to Investigate the Dynamic Properties of Different Sites of the Growth Hormone Secretagogue Receptor. Front Pharmacol. 2020 Oct 29;11:562113. doi: 10.3389/fphar.2020.562113. PMID: 33324203; PMCID: PMC7723455.

Piotrowski C, Moretti R, Ihling CH, Haedicke A, Liepold T, Lipstein N, Meiler J, Jahn O, Sinz A. Delineating the Molecular Basis of the Calmodulin‒bMunc13-2 Interaction by Cross-Linking/Mass Spectrometry-Evidence for a Novel CaM Binding Motif in bMunc13-2. Cells. 2020 Jan 7;9(1):136. doi: 10.3390/cells9010136 PMID: 31936129 PMCID: PMC7017353.

Vogel A, Bosse M, Gauglitz M, Wistuba S, Schmidt P, Kaiser A, Gurevich VV, Beck-Sickinger AG, Hildebrand PW, Huster D. The Dynamics of the Neuropeptide Y Receptor Type 1 Investigated by Solid-State NMR and Molecular Dynamics Simulation. Molecules. 2020 Nov 24;25(23):5489. doi: 10.3390/molecules25235489. PMID: 33255213; PMCID: PMC7727705.

Bräuning B, Bertosin E, Praetorius F, Ihling C, Schatt A, Adler A, Richter C, Sinz A, Dietz H, Grolla M. Structure and mechanism of the two-component α-helical cytolytic toxin YaxAB. Nature Commun. 2018; 4:1806.

Iacobucci C, Götze M, Ihling CH, Arl C, Hage C, Schäfer M, Schmidt R, Piotrowski C, Sinz A. A Cross-linking/Mass Spectrometry Workflow Based on MS-Cleavable Cross-Linkers and the MeroX Software for Studying Protein Structures and Protein-Protein Interactions. Nature Protocols. 2018; 13:2864-89.

Schmidt P, Bender BJ, Kaiser A, Gulati K, Scheidt HA, Hamm HE, Meiler J, Beck-Sickinger AG, Huster D. Improved in Vitro Folding of the Y2 G Protein-Coupled Receptor into Bicelles. Front Mol Biosci. 2018; 4;100.

Yang Z, Han S, Keller M, Kaiser A, Bender BJ, Bosse M, Burkert K, Kögler LM, Wifling D, Bernhardt G, Plank N, Littmann T, Schmidt P, Yi C, Li B, Ye S, Zhang R, Xu B, Larhammar D, Stevens RC, Huster D, Meiler J, Zhao Q, Beck-Sickinger AG, Buschauer A, Wu B. Structural basis of ligand binding modes at the neuropeptide Y Y1 receptor. Nature. 2018; 556:520-4.

Hage C, Iacobucci C, Rehkamp A, Arlt C, Sinz A. The First Zero-Length Mass Spectrometry-Cleavable Cross-Linker for Protein Structure Analysis. Angew Chem Int Ed Engl. 2017; 56:14551-5.

Arlt C, Flegler V, Ihling CH, Schäfer M, Thondorf I, Sinz A. An Integrated Mass Spectrometry Based Approach to Probe the Structure of the Full-Length Wild-Type Tetrameric p53 Tumor Suppressor. Angew Chem Int Ed Engl. 2017; 56:275-9.

Kaiser A, Mueller P, Zellmann T, Scheidt HA, Thomas L, Bosse M, Meier R, Meiler J, Huster D, Beck-Sickinger AG, Schmidt P. Unwinding of the C-Terminal Residues of Neuropeptide Y is critical for Y2 Receptor Binding and Activation. Angew Chemie Int Ed. 2015; 54:7446-9.

Schmidt P, Thomas L, Mueller P, Scheidt HA, Huster D. The G Protein-Coupled Neuropeptide Y Receptor Type 2 is Highly Dynamic in Lipid Membranes as Revealed by Solid-State NMR Spectroscopy. Chemistry Eur J. 2014; 20:4986-92.

Hofmann S, Frank R, Hey-Hawkins E, Beck-Sickinger AG, Schmidt P. Manipulating Y Receptor Selectivity of Short Neuropeptide Y Analogs by Introducing Carbaboranes. Neuropeptides. 2013; 47:59-66.

Kölbel K, Ihling, CH, Sinz A. Analysis of Peptide Secondary Structures by Photoactivatable Amino Acid Analogues. Angew Chem Int Ed Engl. 2012; 51:12602-5.