āļø
Lowercase ('a'-'z'): Horizontal Alignment
āļø
Uppercase ('A'-'Z'): Physically Upright Vertical (Opening & Head on top!)
āļø
Italics (Italic style): Diagonal (45Ā°) Dynamic Stance
š§±
Lipid Bilayers: Type 'ff' for dual-leaflet membrane unit
BioDings Interactive Playground
Type Text (lowercase = horiz, UPPERCASE = upright vert):
Rendered BioDings Glyphs:
A /a
Antibodies
ANTIBODY
IgG Antibody with Fc stem, hinge disulfide bridge, and two Fab variable antigen-binding arms
Horiz ('a')
a
Upright ('A')
A
Diagonal
a
B /b
Microbiology
BACTERIA
Bacillus rod bacterium with capsule, nucleoid coils, surface pili, and polar flagella
Horiz ('b')
b
Upright ('B')
B
Diagonal
b
C /c
Lab Equipment
CENTRIFUGE TUBE
Conical microcentrifuge tube (Eppendorf) with snap cap on top, volume graduations, and pellet
Horiz ('c')
c
Upright ('C')
C
Diagonal
c
D /d
Nucleic Acids
DNA
DNA double helix with antiparallel sugar-phosphate backbones and base rungs. Supports OpenType ligatures: typing repeated "dd" extends into a continuous unbroken chain
Horiz ('d')
d
Upright ('D')
D
Diagonal
d
E /e
Lab Equipment
FLASK
Erlenmeyer conical flask with neck and rolled lip on top, liquid level, and bubbles
Horiz ('e')
e
Upright ('E')
E
Diagonal
e
F /f
Molecules
PHOSPHOLIPID
Phospholipid with polar hydrophilic head on top and two hydrophobic tails dangling down
Horiz ('f')
f
Upright ('F')
F
Diagonal
f
G /g
Molecules
GLUCOSE
D-Glucose Haworth pyranose ring with ring oxygen heteroatom and radiating hydroxyl groups
Horiz ('g')
g
Upright ('G')
G
Diagonal
g
H /h
Proteins
ALPHA HELIX
Alpha helical protein secondary structure showing coiled backbone ribbons and pitch
Horiz ('h')
h
Upright ('H')
H
Diagonal
h
I /i
Lab Equipment
INOCULATION LOOP
Microbiological inoculation loop with insulated handle at base and platinum wire loop at top
Horiz ('i')
i
Upright ('I')
I
Diagonal
i
J /j
Proteins
MEMBRANE CHANNEL
Transmembrane ion channel protein embedded in lipid bilayer with central conduction pore
Horiz ('j')
j
Upright ('J')
J
Diagonal
j
K /k
Molecules
WATER MOLECULE
Water molecule (H2O) with central Oxygen atom on top and two hydrogen atoms spreading downward at 104.5 degrees
Horiz ('k')
k
Upright ('K')
K
Diagonal
k
L /l
Proteins
BETA SHEET
Antiparallel beta pleated sheet ribbons with directional arrowheads and hydrogen bonds
Horiz ('l')
l
Upright ('L')
L
Diagonal
l
M /m
Lab Equipment
MICROSCOPE
Optical compound microscope with eyepiece tube on top, nosepiece, stage, and curved base at bottom
Horiz ('m')
m
Upright ('M')
M
Diagonal
m
N /n
Microbiology
NEURON
Multipolar neuron with dendritic arbor on top, soma, myelinated axon, and synaptic terminals at bottom
Horiz ('n')
n
Upright ('N')
N
Diagonal
n
O /o
Microbiology
OVUM STEM CELL
Eukaryotic ovum / cleaving blastomere with zona pellucida envelope and extruded polar body
Horiz ('o')
o
Upright ('O')
O
Diagonal
o
P /p
Lab Equipment
PETRI DISH
Petri dish culture plate with agar substrate, streak plate dilution, and isolated bacterial colonies
Horiz ('p')
p
Upright ('P')
P
Diagonal
p
Q /q
Microbiology
CHLOROPLAST PLANT CELL
Plant cell chloroplast with double envelope membrane, stroma, and thylakoid grana stacks
Horiz ('q')
q
Upright ('Q')
Q
Diagonal
q
R /r
Proteins
RIBOSOME
Ribosome translation complex with large & small subunits, mRNA strand, and growing polypeptide
Horiz ('r')
r
Upright ('R')
R
Diagonal
r
S /s
Microbiology
SPERM CELL
Spermatozoon with haploid head swimming upward, acrosome cap, midpiece, and waving flagellum
Horiz ('s')
s
Upright ('S')
S
Diagonal
s
T /t
Lab Equipment
TEST TUBE
Laboratory test tube standing upright with rolled lip on top, liquid meniscus, and rounded bottom
Horiz ('t')
t
Upright ('T')
T
Diagonal
t
U /u
Molecules
BENZENE RING
Aromatic benzene ring (C6H6) with hexagonal carbon skeleton and inner resonance pi-electron circle
Horiz ('u')
u
Upright ('U')
U
Diagonal
u
V /v
Microbiology
BACTERIOPHAGE VIRUS
T4 Bacteriophage virus standing upright with capsid head on top, tail sheath, and spider tail fibers at base
Horiz ('v')
v
Upright ('V')
V
Diagonal
v
W /w
Microbiology
WHITE BLOOD CELL
Activated macrophage phagocyte with grasping pseudopod extensions, multi-lobed nucleus, and lysosomes
Horiz ('w')
w
Upright ('W')
W
Diagonal
w
X /x
Nucleic Acids
X CHROMOSOME
Metaphase X chromosome with paired sister chromatids, p and q arms, primary centromere constriction, and Giemsa G-bands
Horiz ('x')
x
Upright ('X')
X
Diagonal
x
Y /y
Nucleic Acids
Y CHROMOSOME
Metaphase Y chromosome with diverging upper chromatid arms, primary centromere constriction, paired long q-arm sister chromatids, and heterochromatin G-bands
Horiz ('y')
y
Upright ('Y')
Y
Diagonal
y
Z /z
Microbiology
RED BLOOD CELL
Human erythrocyte circular biconcave disc showing rounded peripheral torus rim and central dimple
Horiz ('z')
z
Upright ('Z')
Z
Diagonal
z
0
Molecules
ATP
Adenosine Triphosphate (ATP) with adenine, ribose, and 3 phosphate groups
Standard ('0')
0
Diagonal
0
1
Lab Equipment
MICROPIPETTE
Precision micropipettor with plunger on top, digital counter, and dispensing tip pointing down
Standard ('1')
1
Diagonal
1
2
Lab Equipment
BEAKER
Griffin glass beaker standing upright with pouring spout on top and graduation marks
Standard ('2')
2
Diagonal
2
3
Lab Equipment
BUNSEN BURNER
Bunsen burner with cast iron base at bottom, chimney barrel, and roaring gas flame pointing up
Standard ('3')
3
Diagonal
3
4
Nucleic Acids
BASE PAIR
Nucleotide base pair showing purine double ring hydrogen-bonded to pyrimidine single ring
Standard ('4')
4
Diagonal
4
5
Microbiology
MITOCHONDRION
Mitochondrion organelle with outer membrane, inner membrane, cristae folds, and matrix granules
Standard ('5')
5
Diagonal
5
6
Microbiology
ENVELOPED VIRUS
Enveloped coronavirus/influenza virion with lipid bilayer capsid and radiating spike glycoproteins
Standard ('6')
6
Diagonal
6
7
Molecules
AMINO ACID
Amino acid chemical structure with alpha-carbon, amino group (NH2), carboxyl group (COOH), and R side chain
Standard ('7')
7
Diagonal
7
8
Microbiology
MITOSIS CYTOKINESIS
Cell division cytokinesis telophase dumbbell with cleavage furrow and two reforming daughter nuclei
Standard ('8')
8
Diagonal
8
9
Lab Equipment
SCALPEL
Surgical dissection scalpel with graduated handle and sharp curved blade pointing down
Standard ('9')
9
Diagonal
9
_
Molecules
PHOSPHOLIPID LOWER
Lower leaflet phospholipid with polar head at bottom and hydrophobic tails pointing upward
Standard ('_')
_
Diagonal
_
=
Molecules
LIPID BILAYER
Complete lipid bilayer cross-section with opposing polar heads and interlocking fatty acid core
Standard ('=')
=
Diagonal
=
+
Nucleic Acids
TRNA
Transfer RNA cloverleaf with amino acid acceptor stem on top, D-loop, T-loop, and anticodon triplet at bottom
Standard ('+')
+
Diagonal
+
š¬ Chemical Anatomy of a Peptide Residue on the Line
Covalent Backbone ArchitectureEvery character in PeptideChain represents an authentic biochemical amino acid building block. Here is the exact chemical meaning of all the marks along the horizontal line:
The Main Backbone Line (Y = 280)
The continuous covalent polypeptide chain (-N-CĪ±-C-). Runs from X=0 to X=1000 with 0 gap across letters.
Amide Nitrogen (-NH-) at X = 200
The backbone nitrogen with its downward proton (Amide Hydrogen). In proteins, this is the hydrogen bond donor.
Alpha-Carbon (CĪ±) at X = 500
The central chiral stereocenter. The downward notch is the stereospecific Ī±-Hydrogen (HĪ±); the upward stalk connects the R-group.
Carbonyl Group (C=O) at X = 800
The carbonyl carbon with dual double-bond lines extending to the Carbonyl Oxygen sphere. This is the hydrogen bond acceptor.
Variable Side Chain (R-Group)
Extends vertically from CĪ± into the variable field: rings, thiols, carboxylates, alcohols, or aliphatic forks.
Alternating Trans Conformation
UPPERCASE ('A'-'Z') = sidechain UP. lowercase ('a'-'z') = sidechain DOWN! Type
[MkFlV] for alternating trans-pleats!
Live Polypeptide Sequence Builder
Type Sequence (UPPER=up, lower=down, '['=N-term, ']'=C-term, '*'=S-S):
Continuous Polypeptide Chain (Horizontally Scrollable):
[MkFlV]
All 20 Standard Amino Acids (UPPER: Up / lower: Down)
A /a
Nonpolar
ALANINE (Ala)
Smallest chiral amino acid with single methyl (-CH3) side chain
C /c
Polar
CYSTEINE (Cys)
Reactive thiol (-SH) capable of forming covalent disulfide bridges (cystine)
D /d
Negatively Charged (Acidic)
ASPARTATE (Asp)
Acidic carboxylate side chain (-CH2-COO-) with net negative charge
E /e
Negatively Charged (Acidic)
GLUTAMATE (Glu)
Extended acidic carboxylate side chain (-(CH2)2-COO-)
F /f
Aromatic
PHENYLALANINE (Phe)
Aromatic benzene ring on a methylene spacer, strongly hydrophobic
G /g
Special
GLYCINE (Gly)
Smallest, achiral amino acid with single hydrogen side chain
H /h
Positively Charged (Basic / Neutral)
HISTIDINE (His)
Aromatic imidazole 5-ring with pKa ~6.0, catalytic acid/base residue
I /i
Nonpolar
ISOLEUCINE (Ile)
Branched aliphatic sec-butyl side chain with two chiral centers
K /k
Positively Charged (Basic)
LYSINE (Lys)
Long flexible aliphatic chain ending in primary amino group (-NH3+)
L /l
Nonpolar
LEUCINE (Leu)
Branched isobutyl side chain, most abundant amino acid in proteins
M /m
Nonpolar
METHIONINE (Met)
Hydrophobic thioether side chain, AUG start codon residue
N /n
Polar
ASPARAGINE (Asn)
Polar carboxamide side chain, site for N-linked glycosylation
P /p
Special
PROLINE (Pro)
Cyclic pyrrolidine ring locks backbone angles (helix breaker)
Q /q
Polar
GLUTAMINE (Gln)
Extended polar carboxamide chain, cellular nitrogen donor
R /r
Positively Charged (Basic)
ARGININE (Arg)
Basic side chain with planar resonant guanidinium group
S /s
Polar
SERINE (Ser)
Primary hydroxyl (-CH2-OH) side chain, phosphorylation site
T /t
Polar
THREONINE (Thr)
Secondary alcohol side chain with chiral beta-carbon
V /v
Nonpolar
VALINE (Val)
Branched aliphatic isopropyl group, hydrophobic packaging core
W /w
Aromatic
TRYPTOPHAN (Trp)
Largest amino acid with fused indole ring (UV absorbance at 280nm)
Y /y
Aromatic
TYROSINE (Tyr)
Phenol ring with hydroxyl group, kinase phosphorylation target
[ /[
Terminus Cap
N-TERMINUS (Nterm)
Amino-terminal end cap (H3N+-) with free alpha-amino group
] /]
Terminus Cap
C-TERMINUS (Cterm)
Carboxy-terminal end cap (-COO-) with free alpha-carboxylate group
- /-
Linker
PEPTIDE LINKER (Link)
Planar trans-peptide bond linker (-CO-NH-) connecting consecutive amino acid residues
* /*
Disulfide Linker
DISULFIDE BRIDGE (CysSS)
Covalent disulfide bond (-S-S-) linking two cysteine residues across peptide chains
š Release v1.1.0 (Current Production)
Stable
- PeptideChain Font: Added dedicated biochemistry polypeptide font with all 20 standard amino acids, N/C-terminus caps, and seamless covalent backbone linking.
- Alternating Trans-Conformations: Uppercase ('A'-'Z') renders sidechains UP; lowercase ('a'-'z') renders sidechains DOWN, enabling authentic pleated sheet conformations (e.g.
[MkFlV]). - Physical Upright Posture Invariants: Corrected vertical orientation for Test Tube ('T'), Centrifuge Tube ('C'), Phospholipid ('F'), Bacteriophage ('V'), Sperm ('S'), and Micropipette ('1') so openings, caps, and heads point upright.
- Distinct Horizontal vs Vertical Geometries: Redesigned Ribosome ('R'/'r'), Petri Dish ('P'/'p'), Red Blood Cell ('Z'/'z'), and Ovum ('O'/'o') to ensure 100% of alphabet pairs possess distinct horizontal vs vertical dimensions.
- Lipid Bilayer Mechanics: Added upper leaflet ('F'), lower leaflet ('_'), and automatic dual-leaflet membrane bilayer GSUB ligature ('ff').
- OpenType GSUB Ligatures: Added support for 3-letter IUPAC codes (Ala, Cys, Met) and functional motifs (RGD, KDEL, FLAG, GSG).
- Automated Test Suite: Added pure Node.js test suite in
test/verifying all font tables, geometry invariants, and ligatures in under 100ms.
šļø Colophon & Typography
Open Source
The Biological Typography suite bridges biochemical laboratory accuracy with humanist open-source type design.
UI Typeface: Junction
Specimen interface, typography specimen labels, and documentation are set in Junction, designed by Caroline Hadilaksono and Tyler Finck, published by The League of Moveable Type. Released under the SIL Open Font License 1.1.
BioDings (v1.1.0)
Biological Wingdings iconography font designed and engineered by Soliloquy LLC. Features 67 symbols across horizontal (lowercase), upright vertical (uppercase), and 45Ā° diagonal (italic) stances, plus lipid bilayer membrane ligatures.
PeptideChain (v1.1.0)
Biochemistry polypeptide font designed and engineered by Soliloquy LLC. Provides seamless covalent backbone continuity at Y=280, authentic trans-pleat isomer switching, and OpenType GSUB ligatures.
Copyright & Open License
Copyright © 2026 Soliloquy LLC. Reserved Font Names: "BioDings" and "PeptideChain". Licensed under the SIL Open Font License 1.1.
LAJA bio Activity
Biological innovation and open typography tools are housed in the LAJA bio activity. Explore our biology projects and tools at laja.bio.
Engineering & Vector Pipeline
The font tables and outlines are compiled via a pure Node.js pipeline using OpenType.js and verified with Fontkit. Glyph contours are mathematically normalized to 1000 units per EM, an 800 ascender, and a -200 descender with sub-pixel parametric curves.