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Related to L-serine: L-arginine, D-serine


a naturally occurring, nonessential amino acid, used as a dietary supplement, in biological studies and tests, and in culture media.

ser·ine (S, Ser),

2-Amino-3-hydroxypropanoic acid; the l-isomer is one of the amino acids occurring in proteins.


/ser·ine/ (Ser) (S) (sēr´ēn) a naturally occurring nonessential amino acid present in many proteins.


An amino acid, C3H7NO3, that is a common constituent of many proteins.

serine (Ser)

a nonessential amino acid found in many proteins in the body (e.g., casein, vitellin). It is synthesized from glycine or threonin and a precursor of the amino acids purine, cysteine, and others. It can be found in urine. See also amino acid, protein.
enlarge picture
Chemical structure of serine


A gene on chromosome 11q12-q13.1 that encodes a highly glycosylated plasma protein which regulates the complement cascade by inhibiting activated C1r and C1s, thereby preventing complement activation.

Molecular pathology
C1-INH/SERPING1 deficiency is associated with hereditary angioneurotic oedema (HANE).


(S) (sĕr'ēn)
One of the amino acids occurring in proteins.


A non-essential amino acid found as a component of most proteins. It is a precursor of choline, glucine, cysteine and pyruvate. Serine is present in most diets but most of the body serine is synthesized.
Serineclick for a larger image
Fig. 282 Serine . Molecular structure.

serine (S, Ser)

one of 20 AMINO ACIDS common in proteins. It has a polar ‘R’ group structure and is soluble in water. See Fig. 282 . The ISOELECTRIC POINT of serine is 5.7.


One of the amino acids occurring in proteins.

serine (Ser) (serēn´),

n a nonessential amino acid found in many proteins in the body. It is a precursor of the amino acids glycine and cysteine.


Ser; a naturally occurring amino acid.
References in periodicals archive ?
Kinetics of L-tryptophan production from indole and L-serine catalyzed by whole cells with tryptophanase activity.
HSAN1-associated mutant SPT has a reduced preference for L-serine and an increased activity toward amino acid substrates (specifically, alanine and glycine), which ultimately lead to the production of deoxy-type sphingosine bases.
Synthesis of GlcCer requires glucose, palmitoyl CoA, and L-serine from glucose.
Exogenous L-serine is required for the synthesis of neuronal phosphatidyl-L-serine and sphingolipids.
2000) L-serine and glycine serve as major astroglia-derived trophic factors for cerebellar Purkinje neurons.
2008) Roles of L-serine and sphingolipid synthesis in brain development and neuronal survival.
L-Serine induces sedative and hypnotic effects acting at GABA(A) receptors in neonatal chicks.
Forty-five CSF samples obtained from 3 groups of patients-chronic pain due to OA of the knees (n = 16), chronic pain resulting from PHN (n = 16), and pain-free participants (n = 13)--were analyzed for D--and L-serine.
The Sumichiral column separation of dabsyl D-serine, L-serine, and the D-tert-leucine in the standard and a CSF sample are shown in Fig.
005 mol/L) produced the best resolution for the D- and L-serine peaks and the dabsyl D-tert-leucine internal standard.
3 [micro]mol/L when evaluated on dabsyl D-serine and L-serine calibrators with r > 0.
The LOQ values for dabsyl D-serine, L-serine, and D-tert-leucine were 0.