Classification of all b Proteins

ring/zippered/helical/right-handed
Ecotin, trypsin inhibitor
gamma-Crystallin-like
Spermadhesin, CUB domain
alpha-Amylases, C-terminal beta-sheet domain
alpha-Amylase inhibitor tendamistat
Prealbumin-like
Segmented RNA-genome viruses' proteins
Neurophysin II
Galactose-binding domain-like
Trypsin-like serine proteases
Viral coat and capsid proteins
EF-Tu/eEF-1alpha C-terminal domain
Pyruvate kinase beta-barrel domain
Common fold of diphtheria toxin/transcription factors/cytochrome f
FMN-binding split barrel
PNGase F-like
Reductase/isomerase/elongation factor common domain
Calpain large subunit, middle domain (domain III)
TNF-like
Lipase/lipooxygenase domain
Epsilon subunit of F1F0-ATP synthase N-terminal domain
Barrel-sandwich hybrid
TRAF domain
C2 domain-like
Phosphatidylethanolamine binding protein
Domain of alpha and beta subunits of F1 ATP synthase-like
Immunoglobulin-like beta-sandwich
Adenovirus fiber protein head domain (knob domain)

ring/zippered/helical/left-handed
mu transposase, C-terminal domain
HSP40/DnaJ peptide-binding domain
PDZ domain-like
N-terminal domains of the minor coat protein g3p
SH3-like barrel
HSP20-like chaperones
EV matrix protein
EV matrix protein
LexA/Signal peptidase
OB-fold
Ribosomal protein L14
FMT C-terminal domain-like
beta-Prism II
GroES-like
tripple barrel

ring/zippered/non-helical
Transcription factor IIA (TFIIA), N-terminal domain
beta-clip
Head domain of nucleotide exchange factor GrpE
Head-binding domain of phage p22 tailspike protein
WW domain-like
Sm motif of small nuclear ribonucleoproteins, SNRNP
Oncogene products
Cupredoxins
gp9
RabGEF Mss4
Cyclophilin (peptidylprolyl isomerase)
Hedgehog/intein (Hint) domain
Double-stranded beta-helix
ValRS/IleRS editing domain

ring/non-zippered
alpha-Subunit of urease, composite domain
Concanavalin A-like lectins/glucanases
XRCC4, N-terminal domain
Core binding factor beta
Supersandwich
Streptavidin-like
ISP domain
PH domain-like
Double psi beta-barrel
Acid proteases
F-MuLV receptor-binding domain
beta-Prism I
Ribosomal protein L25-like
SMAD/FHA domain
Osmotin, thaumatin-like protein
Bacteriochlorophyl A protein
4-bladed beta-propeller
beta-Trefoil
Herpes virus serine proteinase, assemblin
Lipocalins
Single-stranded left-handed beta-helix
5-bladed beta-propeller
Carbonic anhydrase
Soluble secreted chemokine inhibitor, VCCI
Photosynthetic reaction centre, H-chain, cytoplasmic domain
8-bladed beta-propeller
Extracytoplasmic domain of cation-dependent mannose 6-phosphate receptor
Paculovirus p35
6-bladed beta-propeller
7-bladed beta-propeller

non-ring
Hyaluronate lyase-like, C-terminal domain
gp9
Outer surface protein A
beta-Roll
Single-stranded right-handed beta-helix
Triple beta-spiral
Cyanovirin-N
E2 regulatory, transactivation domain