-
2-Residue beta hairpin (type I')
- Residue 1: Left handed helix
- Residue 2: Glycine
-
2-Residue beta hairpin (type II')
- Residue 1: Gly
- Residue 2: Small, polar
-
3-Residue beta hairpin
- Residue 1: Right handed helix
- Residue 2: Helix-sheet bridge
- Residue 3: Left handed helix (Gly, Asn, Asp)
-
4 Residue beta hairpins
- Residue 1: Right handed helix
- Residue 2: Right handed helix
- Residue 3: Helix-sheet bridge
- Residue 4: Left handed helix (Gly, Asn, Asp)
-
β-meander
Sheets connected by a series of long loops
-
Other beta
- Ω-Loops
- Regular turns
- Reverse turns
-
Beta corner
- 2-Residue disruption/bulge (beta hairpin)
- 90° change in direction
-
2-Residue αα hairpin
- Residue 1: α-β bridge
- Residue 2: Gly
-
3-Residue αα hairpin
- Residue 1: α-β bridge (caps first helix)
- Residue 2: Left handed helix (caps both helices)
- Residue 3: β-strand
-
4-Residue αα hairpin (conformation 1)
- Residue 1: Bridging
- Residue 2: Left handed helix
- Residue 3: β-strand
-
4-Residue αα hairpin (conformation 2)
- Residue 1: β-strand
- Residue 2: Bridging
-
αα corner
- Two helices connect by a short loop (right-handed)
- Residue 1: Small (Ala, Gly) (cap first helix)
- Residue 2: Hydrophobic
- Residue 3: Small, polar (Ser, Asp) (cap second helix)
-
Helix-turn-helix
- Ca2+ binding
- 12 Residue loop (contains Gly6, Asp and Glu)
- Pairs
-
Helix-loop-helix
DNA binding
-
βαβ motif -
- Paralell β-sheet
- Paralell helix (perp. to strands)
- Right handed
-
-
Helix packing interactions
- I+4 -> i+3 Parallel 23°
- i+4 -> i+4 Orthoganol 52°
- i+4 -> i+1 Orthoganol 105°
-
Aligned β-sandwich, sheet angled
-20° - -50°
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