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Items: 12

1.

Methylation

A chemical reaction in which a small molecule called a methyl group is added to other molecules. Methylation of proteins or nucleic acids may affect how they act in the body. [from NCI]

MedGen UID:
44400
Concept ID:
C0025723
Molecular Function; Natural Phenomenon or Process
2.

Arginine

One of the twenty common amino acids (building blocks of proteins). Arginine is being studied as a nutritional supplement in the treatment and prevention of cancer and other conditions. [from NCI]

MedGen UID:
13907
Concept ID:
C0003765
Amino Acid, Peptide, or Protein; Biologically Active Substance; Pharmacologic Substance
3.

Protein binding

The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments. [from MeSH]

MedGen UID:
18704
Concept ID:
C0033618
Molecular Function
4.

Acetylation

A chemical reaction in which a small molecule called an acetyl group is added to other molecules. Acetylation of proteins may affect how they act in the body. [from NCI]

MedGen UID:
7840
Concept ID:
C0001038
Molecular Function
5.

Citrulline

A non-essential amino acid. In hepatocytes, L-citrulline is synthesized in the urea cycle by the addition of carbon dioxide and ammonia to ornithine. L-citrulline is converted into L-arginine by the enzymes argininosuccinate synthetase and argininosuccinate lyase in the presence of L-aspartate and ATP. Subsequently, L-arginine is converted to nitric oxide by nitric oxide synthase and L-citrulline is regenerated as a by-product. [from NCI]

MedGen UID:
983
Concept ID:
C0008864
Amino Acid, Peptide, or Protein; Biologically Active Substance; Pharmacologic Substance
6.

Protanomaly

A type of anomalous trichromacy associated with defective long-wavelength-sensitive (L) cones, causing the sensitivity spectrum to be shifted toward medium wavelengths. This leads to difficulties especially in distinguishing red and green. [from HPO]

MedGen UID:
854688
Concept ID:
C3887980
Disease or Syndrome
7.

Recruitment

MedGen UID:
78772
Concept ID:
C0271510
Disease or Syndrome
8.

Protan defect

Hereditary red-green color vision defects manifest mostly in males; the condition is not accompanied by ophthalmologic or other associated clinical abnormalities. Most individuals with protanomalous and deuteranomalous color vision defects (i.e., anomalous trichromats) have no problems in naming colors; some males with mildly defective red-green color vision may not be aware of it until they are tested. Individuals with dichromatic color vision defects (i.e., dichromats) are more proficient in deciphering texture camouflaged by color than observers with normal red-green color vision. Among individuals of northern European origin, about 8% of males and 0.5% of females have red-green color vision defects; these defects are less frequent among males of African (3%-4%) or Asian (3%) origin. [from GeneReviews]

MedGen UID:
56350
Concept ID:
C0155015
Disease or Syndrome
9.

Up-Regulation (Physiology)

A positive regulatory effect on physiological processes at the molecular, cellular, or systemic level. At the molecular level, the major regulatory sites include membrane receptors, genes (GENE EXPRESSION REGULATION), mRNAs (RNA, MESSENGER), and proteins. [from MeSH]

MedGen UID:
12003
Concept ID:
C0041904
Cell Function; Molecular Function
10.

Down-regulation

A negative regulatory effect on physiological processes at the molecular, cellular, or systemic level. At the molecular level, the major regulatory sites include membrane receptors, genes (GENE EXPRESSION REGULATION), mRNAs (RNA, MESSENGER), and proteins. [from MeSH]

MedGen UID:
4386
Concept ID:
C0013081
Cell Function; Molecular Function
11.

Essential amino acid

Amino acids that are not synthesized by the human body in amounts sufficient to carry out physiological functions. They are obtained from dietary foodstuffs. [from MeSH]

MedGen UID:
252
Concept ID:
C0002525
Amino Acid, Peptide, or Protein; Biologically Active Substance; Pharmacologic Substance
12.

Amino acid

One of several molecules that join together to form proteins. There are 20 common amino acids found in proteins. [from NCI]

MedGen UID:
250
Concept ID:
C0002520
Amino Acid, Peptide, or Protein; Biologically Active Substance; Pharmacologic Substance
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