7SSF

Light harvesting phycobiliprotein HaPE560 from the cryptophyte Hemiselmis andersenii CCMP644

• PDB DOI: https://doi.org/10.2210/pdb7SSF/pdb

• Classification: PHOTOSYNTHESIS
• Organism(s): Hemiselmis andersenii
• Mutation(s): No 


• Deposited: 2021-11-10 Released: 2023-10-25 
• Deposition Author(s): Rathbone, H.W., Michie, K.A., Laos, A.L., Curmi, P.M.G.
• Funding Organization(s): Australian Research Council (ARC), Other government

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free: 0.192 
• R-Value Work: 0.154 
• R-Value Observed: 0.156 

Literature

Molecular dissection of the soluble photosynthetic antenna from the cryptophyte alga Hemiselmis andersenii

Rathbone, H.W., Curmi, P.M.G., Michie, K.A., Green, B.R., Laos, A.L., Thordarson, P., Iranmanesh, H.

(2023) Commun Biol 

• DOI: https://doi.org/10.1038/s42003-023-05508-4

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration, mass spectrometry

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 2 assigned by authors.

Biological Assembly Evidence: gel filtration, mass spectrometry

Macromolecule Content

• Total Structure Weight: 114.3 kDa 
• Atom Count: 9,395 
• Modelled Residue Count: 985 
• Deposited Residue Count: 996 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HaPE560 alpha subunit	A, C, E, G	72	Hemiselmis andersenii	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Phycoerythrin550 beta subunit	B, D, F, H	177	Hemiselmis andersenii	Mutation(s): 0
UniProt
Find proteins for U5T8W0 (Hemiselmis andersenii) Explore U5T8W0  Go to UniProtKB:  U5T8W0

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
AX9 (Subject of Investigation/LOI)	J [auth B], O [auth D], S [auth F], Y [auth H]	DiCys-(15,16)-Dihydrobiliverdin C33 H40 N4 O6 MZFCOERRVCGRTL-ZTYGKHTCSA-N
PEB (Subject of Investigation/LOI)	AA [auth H], I [auth A], K [auth B], L [auth B], N [auth C], P [auth D], Q [auth D], R [auth E], T [auth F], U [auth F], X [auth G], Z [auth H]	PHYCOERYTHROBILIN C33 H40 N4 O6 NKCBCVIFPXGHAV-WAVSMFBNSA-N
TRS	BA [auth H], M [auth B], V [auth F]	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C4 H12 N O3 LENZDBCJOHFCAS-UHFFFAOYSA-O
CL	W [auth F]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
LYZ	A, C, E, G	L-PEPTIDE LINKING	C6 H14 N2 O3		LYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free: 0.192 
• R-Value Work: 0.154 
• R-Value Observed: 0.156 
• Space Group: I 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 84.32	α = 90
b = 67.97	β = 99.33
c = 184.494	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
iMOSFLM	data reduction
pointless	data scaling
Aimless	data scaling
PHENIX	phasing
Coot	model building

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-10-25 
Deposition Author(s): Rathbone, H.W., Michie, K.A., Laos, A.L., Curmi, P.M.G.

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Funding Organization	Location	Grant Number
Australian Research Council (ARC)	Australia	DP180103964
Other government	Australia	FA2386-17-1-4101 (U.S. Air Force Office of Scientific Research through the Asian Office of Aerospace Research and Developmen)
Australian Research Council (ARC)	Australia	LE190100165

Revision History  

• Version 1.0: 2023-10-25
  Type: Initial release
  
• Version 2.0: 2023-11-15
  Changes: Atomic model, Database references