Biological Assembly 1  

 3D View: Structure | Validation Report | Ligand Interaction | Predict Membrane 

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 5.51 kDa 
• Atom Count: 387 
• Modelled Residue Count: 34 
• Deposited Residue Count: 34 
• Unique protein chains: 1

2NA5

NMR solution structure of vitamin B12 conjugates of PYY3-36

• DOI: 10.2210/pdb2NA5/pdb
• BMRB: 25928

• Classification: HORMONE
• Organism(s): Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2015-12-21 Released: 2016-09-21 
• Deposition Author(s): Doyle, R.P., Henry, K.E., Roth, C.L., Kerwood, D.J., Allis, D.G., Holz, G.G., Zubieta, J.

---

Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 4 
• Conformers Submitted: 1 
• Selection Criteria: structures with the lowest energy 

Literature

Solution Structure and Constrained Molecular Dynamics Study of Vitamin B12 Conjugates of the Anorectic Peptide PYY(3-36).

Henry, K.E., Kerwood, D.J., Allis, D.G., Workinger, J.L., Bonaccorso, R.L., Holz, G.G., Roth, C.L., Zubieta, J., Doyle, R.P.

(2016) ChemMedChem 11: 1015-1021

• PubMed: 27027248 
• DOI: 10.1002/cmdc.201600073
• Primary Citation of Related Structures:  
  2NA5


• PubMed Abstract: 
  

Vitamin B12 -peptide conjugates have considerable therapeutic potential through improved pharmacokinetic and/or pharmacodynamic properties imparted on the peptide upon covalent attachment to vitamin B12 (B12 ). There remains a lack of structural studies investigating the effects of B12 conjugation on peptide secondary structure. Determining the solution structure of a B12 -peptide conjugate or conjugates and measuring functions of the conjugate(s) at the target peptide receptor may offer considerable insight concerning the future design of fully optimized conjugates. This methodology is especially useful in tandem with constrained molecular dynamics (MD) studies, such that predictions may be made about conjugates not yet synthesized. Focusing on two B12 conjugates of the anorectic peptide PYY(3-36), one of which was previously demonstrated to have improved food intake reduction compared with PYY(3-36), we performed NMR structural analyses and used the information to conduct MD simulations. The study provides rare structural insight into vitamin B12 conjugates and validates the fact that B12 can be conjugated to a peptide without markedly affecting peptide secondary structure.

---

Organizational Affiliation: 

Department of Medicine and Pharmacology, Institute for Human Performance, SUNY Upstate Medical University, 750 East Adams Street, Syracuse, NY, 13210, USA. [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Peptide YY	A	34	Homo sapiens	Mutation(s): 0  Gene Names: PYY Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for P10082 (Homo sapiens) Explore P10082  Go to UniProtKB:  P10082
PHAROS:  P10082 GTEx:  ENSG00000131096

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CNC (Subject of Investigation/LOI)	B [auth A]	CYANOCOBALAMIN C63 H89 Co N14 O14 P SYZBZQWSWIJYAR-UVKKECPRSA-M

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 4 
• Conformers Submitted: 1 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2NA5 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2015-12-21 
• Released Date: 2016-09-21 
Deposition Author(s): Doyle, R.P., Henry, K.E., Roth, C.L., Kerwood, D.J., Allis, D.G., Holz, G.G., Zubieta, J.

Revision History  

• Version 1.0: 2016-09-21
  Type: Initial release
  
• Version 1.1: 2016-10-12
  Changes: Other
• Version 2.0: 2021-08-18
  Changes: Data collection, Database references, Derived calculations, Non-polymer description, Structure summary