Astra Suite

AstraROLE2 & AstraSUIT2

Function and Experimental Suitability, from Sequence

Two companion models answer the first two questions about any protein. AstraROLE2 tells you what it does; AstraSUIT2 tells you how to work with it — so an unannotated sequence arrives already profiled for function and for the bench.

FunctionSuitabilityMulti-Task
Read the Preprint
Rhodopsin
UniProt P08100 · 348 aa
FunctionGPCR · Photoreceptor
PathwayVisual Phototransduction
CofactorRetinal (11-cis)
MembraneIntegral · 7 TM
LocalizationPhotoreceptor Membrane
Illustrative Profile · Rhodopsin (P08100)
Signature Strength

A Complete Protein Profile — From Sequence Alone

A ten-factor functional profile — function (EC, GO, pathways) and experimental suitability (cofactors, membrane type, topology) in one call, no MSA. It generalizes to low-homology, engineered, and de-novo proteins, where homology-based tools fall short.

10
Functional Factors, One Model
EC 3.4.217 TM HelicesGO: SignallingCofactor: Zn²⁺Membrane: IntegralCytoplasmHost: Eukaryota

Real Structure · Rhodopsin (PDB 1U19)

One Sequence, a Full Profile

Two Models, One Call

What It Does, and How to Work with It

Both read the same sequence and return a structured profile — no MSA hunt, no manual annotation.

AstraROLE2

What the Protein Does

EC Number
Enzyme Commission Classification
GO Terms
Molecular Function, Process, Component
Categories
Protein Type and Family
Pathways
Metabolic & Signalling Membership

AstraSUIT2

How to Work with It

Cofactors
Metals, Nucleotides, Prosthetic Groups
Domains
Fold Class and Domain Make-Up
Host Lineage
Eukaryota / Bacteria / Archaea / Virus
Membrane Type
Soluble, Integral, Peripheral, Anchored
Localization
Subcellular Compartment
TM Helices
Transmembrane Span Count
10
Functional Factors, One Call
Four Function Factors · Six Suitability Factors
5 / 7
Matches or Beats Specialist Tools
On Tested Tasks · Macro-F1 0.85–0.98
0
MSAs Required
Generalizes to Low-Homology & De-Novo Proteins

Example Read-Out

One Sequence, Fully Profiled

Rhodopsin · OPSD
UniProt P08100 · 348 aa
Function · ROLE2
Function
G Protein-Coupled Photoreceptor
GO
Phototransduction · GPCR Signalling
Category
Class A (Rhodopsin-Like) GPCR
Pathway
Visual Phototransduction
Suitability · SUIT2
Cofactor
Retinal (11-cis)
Membrane
Integral · Multi-Pass
TM Helices
7
Localization
Photoreceptor Membrane
Host Lineage
Eukaryota

Illustrative Read-Out for a Well-Characterized Target.

AstraROLE2 & AstraSUIT2: Multi-Task Annotation Models for Functional Profiling of Proteins
Tasks, Coverage, and Evaluation · bioRxiv, 2025
Read →

Put Astra on Your Targets

Every Astra model runs inside the Orbion platform. Bring a sequence and get the full read-out — structure, function, modifications, binding, and stability.