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Items tagged with: biochemistry

Stephen Royle

10 months ago

Stephen Royle
10 months ago

Seen on the other place.

I have been mystified why K represented Lysine for many years. Undergrad #biochemistry lecturer said “I don't know why, but I assume it is because of the end of the side chain looks like a K”. Well, turns out the answer is more simple.

Source: M Eugenio Vazquez. Posted in honour of Margaret Dayhoff, inventor of the single-letter amino acid code

A dot matrix printout of the rules for single-letter codes for amino acids.
MNEMONICS OF THE ONE-LETTER CODE
IF POSSIBLE, THE INITIAL LETTER OF THE AMINO ACID IS USED. IF MORE THAN ONE AMINO ACID BEGINS WITH THE SAME LETTER, THE MOST COMMONLY-OCCURRING ONE IS ASSIGNED THE INITIAL.
A = ALANINE C = CYSTEINE
G = GLYCINE
I = ISOLEUCINE
L = LEUCINE
M = METHIONINE
S = SERINE
T = THREONINE V = VALINE
H = HISTIDINE
P = PROLINE
SOME OF THE OTHERS ARE PHONETICALLY SUGGESTIVE.
F = PHENYLALANINE
R = ARGININE
0 = TYROSINE
DOUBLE RING IN THE SIDE CHAIN.
W = TRYPTOPHAN
THE TWO ACIDS ARE ADJACENT, IN ALPHABETICAL ORDER.
D = ASPARTIC ACID
E = GLUTAMIC ACID
THE TWO AMINES HAVE LETTERS FROM THE MIDDLE OF THE ALPHABET.
N = ASPARAGINE (CONTAINS N)
Q = GLUTAMINE (Q-TAMINE')
NON-INITIAL LETTER AS CLOSE AS POSSIBLE TO ITS INITIAL.
K = LYSINE

#biochemistry

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Lorena Rosaleny #AúnEnPandemia

2 years ago

Lorena Rosaleny #AúnEnPandemia
2 years ago

Hello there! 🧬 Biochemist and 🖥️ R programmer from #Spain speaking. I like reading sci-fi & fantasy and watching TV shows. Feminisms and #WomenInSTEM. Hope to meet like-minded people and see many cat's pics

#introduction #scifi #chemistry #Spain #WomenInSTEM #rstats #molecularbiology #biochemistry