7SMU

Crystal Structure of Consomatin-Ro1 <structure_details=Consomatin-Ro1, a cone snail venom SSTL mimetic

• PDB DOI: https://doi.org/10.2210/pdb7SMU/pdb

• Classification: TOXIN
• Organism(s): Conus rolani
• Mutation(s): No 


• Deposited: 2021-10-26 Released: 2022-04-13 
• Deposition Author(s): Ramiro, I.B.L., Whitby, F.G., Hill, C.P., Safavi-Hemami, H., Concepcion, G.P., Olivera, B.M.
• Funding Organization(s): Department of Defense (DOD, United States)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.282 
• R-Value Work: 0.236 

Literature

Somatostatin venom analogs evolved by fish-hunting cone snails: From prey capture behavior to identifying drug leads.

Ramiro, I.B.L., Bjorn-Yoshimoto, W.E., Imperial, J.S., Gajewiak, J., Salcedo, P.F., Watkins, M., Taylor, D., Resager, W., Ueberheide, B., Brauner-Osborne, H., Whitby, F.G., Hill, C.P., Martin, L.F., Patwardhan, A., Concepcion, G.P., Olivera, B.M., Safavi-Hemami, H.

(2022) Sci Adv 8: eabk1410-eabk1410

• PubMed: 35319982 
• DOI: https://doi.org/10.1126/sciadv.abk1410
• Primary Citation of Related Structures:  
  7SMU


• PubMed Abstract: 
  

  Somatostatin (SS) is a peptide hormone with diverse physiological roles. By investigating a deep-water clade of fish-hunting cone snails, we show that predator-prey evolution has generated a diverse set of SS analogs, each optimized to elicit specific systemic physiological effects in prey. The increased metabolic stability, distinct SS receptor activation profiles, and chemical diversity of the venom analogs make them suitable leads for therapeutic application, including pain, cancer, and endocrine disorders. Our findings not only establish the existence of SS-like peptides in animal venoms but also serve as a model for the synergy gained from combining molecular phylogenetics and behavioral observations to optimize the discovery of natural products with biomedical potential.

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Organizational Affiliation: 

Department of Biomedical Sciences, University of Copenhagen, Copenhagen-N 2200, Denmark.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 6-mer - A6 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 10.2 kDa 
• Atom Count: 733 
• Modelled Residue Count: 78 
• Deposited Residue Count: 78 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Consomatin-Ro1	A [auth D], B [auth E], C, D [auth B], E [auth F], F [auth A]	13	Conus rolani	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
V1J (Subject of Investigation/LOI)	G [auth D]	3,6,9,12,15,18,21,24,27,30,33,36,39,42,45-pentadecaoxaoctatetracontane-1,48-diol C33 H68 O17 UQGCHKWTTDVZHM-UHFFFAOYSA-N

Modified Residues  2 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CGU	A [auth D], B [auth E], C, D [auth B], E [auth F], F [auth A]	L-PEPTIDE LINKING	C6 H9 N O6		GLU
HYP	A [auth D], B [auth E], C, D [auth B], E [auth F], F [auth A]	L-PEPTIDE LINKING	C5 H9 N O3		PRO

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.282 
• R-Value Work: 0.236 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.282	α = 90
b = 50.282	β = 90
c = 135.005	γ = 120

Software Package:

Software Name	Purpose
XDS	data reduction
Aimless	data scaling
SOLVE	phasing
RESOLVE	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-04-13 
Deposition Author(s): Ramiro, I.B.L., Whitby, F.G., Hill, C.P., Safavi-Hemami, H., Concepcion, G.P., Olivera, B.M.

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Funding Organization	Location	Grant Number
Department of Defense (DOD, United States)		PR161686

Revision History  

• Version 1.0: 2022-04-13
  Type: Initial release