Which special group is present in Histidine?

Which special group is present in Histidine?
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1 Answer

Answer :

Imidazole group.
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Related questions

The amino acid which contains an indole group is (A) Histidine (B) Arginine (C) Cystine (D) Tryptophan

Description : The amino acid which contains an indole group is (A) Histidine (B) Arginine (C) Cystine (D) Tryptophan

Last Answer : Answer : D

Amino acids excepting histidine are not good buffering agents in cell because (A) They exist as zwitter ions (B) Their pk and not in the physiological pH of a cell (C) Only Histidine has pk of its R group at 6.0 unlike the others which have at a different pH (D) None of these

Description : Amino acids excepting histidine are not good buffering agents in cell because (A) They exist as zwitter ions (B) Their pk and not in the physiological pH of a cell (C) Only Histidine has pk of its R group at 6.0 unlike the others which have at a different pH (D) None of these

Last Answer : Answer : C

It is the only amino acid having an ionizing ‘R’ group with a pK’ near 7 and is important in the active site of some enzymes: (A) Arginine (B) Cystein (C) Cystine (D) Histidine

Description : It is the only amino acid having an ionizing ‘R’ group with a pK’ near 7 and is important in the active site of some enzymes: (A) Arginine (B) Cystein (C) Cystine (D) Histidine

Last Answer : Answer : D

One of the following has a phenolic group: (A) Histidine (B) Hydroxy lysine (C) Seratonine (D) Hydroxy proline

Description : One of the following has a phenolic group: (A) Histidine (B) Hydroxy lysine (C) Seratonine (D) Hydroxy proline

Last Answer : Answer : C

Which among the following has an imidazole group? (A) Histidine (B) Tryptophan (C) Proline (D) Hydroxy proline

Description : Which among the following has an imidazole group? (A) Histidine (B) Tryptophan (C) Proline (D) Hydroxy proline

Last Answer : Answer : A

The amino acid which contains an indole group is (A) Histidine (B) Arginine (C) Glycine (D) Tryptophan

Description : The amino acid which contains an indole group is (A) Histidine (B) Arginine (C) Glycine (D) Tryptophan

Last Answer : Answer : D

The amino acid which contains a guanidine group is (A) Histidine (B) Arginine (C) Citrulline (D) Ornithine

Description : The amino acid which contains a guanidine group is (A) Histidine (B) Arginine (C) Citrulline (D) Ornithine

Last Answer : Answer : B

Buffering action of haemoglobin is mainly due to its (A) Glutamine residues (B) Arginine residues (C) Histidine residues (D) Lysine residues

Description : Buffering action of haemoglobin is mainly due to its (A) Glutamine residues (B) Arginine residues (C) Histidine residues (D) Lysine residues

Last Answer : Answer : C

N-Formiminoglutamate is a metabolite of (A) Glutamate (B) Histidine (C) Tryptophan (D) Methionine

Description : N-Formiminoglutamate is a metabolite of (A) Glutamate (B) Histidine (C) Tryptophan (D) Methionine

Last Answer : Answer : B

Zinc finger motif is formed in some proteins by binding of zinc to (A) Two cysteine residues (B) Two histidine residues (C) Two arginine residues (D) Two cysteine and two histidine residues or two pairs of two cysteine residues each

Description : Zinc finger motif is formed in some proteins by binding of zinc to (A) Two cysteine residues (B) Two histidine residues (C) Two arginine residues (D) Two cysteine and two histidine residues or two pairs of two cysteine residues each

Last Answer : Answer : D

Which of the following amino acids produce a vasoconstrictor on decarboxylation? (A) Histidine (B) Tyrosine (C) Threonine (D) Arginine

Description : Which of the following amino acids produce a vasoconstrictor on decarboxylation? (A) Histidine (B) Tyrosine (C) Threonine (D) Arginine

Last Answer : Answer : B

Histamine is formed from histidine by the enzyme histidine decarboxylase in the presence of (A) NAD (B) FMN (C) HS-CoA (D) B6-PO4

Description : Histamine is formed from histidine by the enzyme histidine decarboxylase in the presence of (A) NAD (B) FMN (C) HS-CoA (D) B6-PO4

Last Answer : Answer : D

An amino acid used for the synthesis of thyroid hormone is (A) Tyrosine (B) Tryptophan (C) Histidine (D) Proline

Description : An amino acid used for the synthesis of thyroid hormone is (A) Tyrosine (B) Tryptophan (C) Histidine (D) Proline

Last Answer : Answer : A

In the synthesis of Angiotensin I, rennin acts on Angiotensinogen and cleaves the (A) Leucine – leucine at 10 and 11 position (B) Valine – tyrosine at 3 and 4 position (C) Isoleucine – histidine at 5 and 6 position (D) Proline – histidine at 7 and 8 position

Description : In the synthesis of Angiotensin I, rennin acts on Angiotensinogen and cleaves the (A) Leucine – leucine at 10 and 11 position (B) Valine – tyrosine at 3 and 4 position (C) Isoleucine – histidine at 5 and 6 position (D) Proline – histidine at 7 and 8 position

Last Answer : Answer : A

An amino acid required for porphyrin synthesis is (A) Proline (B) Glycine (C) Serine (D) Histidine

Description : An amino acid required for porphyrin synthesis is (A) Proline (B) Glycine (C) Serine (D) Histidine

Last Answer : Answer : A

Which of the following amino acid has been shown as one of the active site of phosphoglucomutase? (A) Lysine (B) Tyrosine (C) Serine (D) Histidine

Description : Which of the following amino acid has been shown as one of the active site of phosphoglucomutase? (A) Lysine (B) Tyrosine (C) Serine (D) Histidine

Last Answer : Answer : C

Pyridoxine deficiency can be diagnosed by measuring the urinary excretion of xanthurenic acid following a test dose of (A) Glycine (B) Histidine (C) Tryptophan (D) Pyridoxine

Description : Pyridoxine deficiency can be diagnosed by measuring the urinary excretion of xanthurenic acid following a test dose of (A) Glycine (B) Histidine (C) Tryptophan (D) Pyridoxine

Last Answer : Answer : C

Niacin can be synthesised in human beings from (A) Histidine (B) Phenylalanine (C) Tyrosine (D) Tryptophan

Description : Niacin can be synthesised in human beings from (A) Histidine (B) Phenylalanine (C) Tyrosine (D) Tryptophan

Last Answer : Answer : D

In Ames’ assay, liver homogenate is included in the culture medium because (A) It converts pro-carcinogens into carcinogens (B) Liver can metabolise histidine (C) Salmonella mainly infects liver (D) Liver is very susceptible to cancer

Description : In Ames’ assay, liver homogenate is included in the culture medium because (A) It converts pro-carcinogens into carcinogens (B) Liver can metabolise histidine (C) Salmonella mainly infects liver (D) Liver is very susceptible to cancer

Last Answer : Answer : A

In Ames’ assay, addition of a carcinogen to the culture medium allows S. typhimurium to grow (A) In the presence of histidine (B) In the presence of arginine (C) In the absence of histidine (D) In the absence of arginine

Description : In Ames’ assay, addition of a carcinogen to the culture medium allows S. typhimurium to grow (A) In the presence of histidine (B) In the presence of arginine (C) In the absence of histidine (D) In the absence of arginine

Last Answer : Answer : C

All the following amino acids are nonessential except (A) Alanine (B) Histidine (C) Cysteine (D) Proline

Description : All the following amino acids are nonessential except (A) Alanine (B) Histidine (C) Cysteine (D) Proline

Last Answer : Answer : B

An important finding in Histidinemia is (A) Impairment of conversion of α-Glutamate to α-ketoglutarate (B) Speech defect (C) Decreased urinary histidine level (D) Patients can not be treated by diet

Description : An important finding in Histidinemia is (A) Impairment of conversion of α-Glutamate to α-ketoglutarate (B) Speech defect (C) Decreased urinary histidine level (D) Patients can not be treated by diet

Last Answer : Answer : B

The amino acid which synthesizes many hormornes: (A) Valine (B) Phenylalanine (C) Alanine (D) Histidine

Description : The amino acid which synthesizes many hormornes: (A) Valine (B) Phenylalanine (C) Alanine (D) Histidine

Last Answer : Answer : B

Neutral amino acid is (A) Leucine (B) Lysine (C) Aspartic acid (D) Histidine

Description : Neutral amino acid is (A) Leucine (B) Lysine (C) Aspartic acid (D) Histidine

Last Answer : Answer : A

Which of the amino acid produces a vasodilator on decarboxylation? (A) Glutamin acid (B) Histidine (C) Ornithine (D) Cysteine

Description : Which of the amino acid produces a vasodilator on decarboxylation? (A) Glutamin acid (B) Histidine (C) Ornithine (D) Cysteine

Last Answer : Answer : B

All α-amino acids have one asymmetric carbon atom except (A) Arginine (B) Glycine (C) Aspartic acid (D) Histidine

Description : All α-amino acids have one asymmetric carbon atom except (A) Arginine (B) Glycine (C) Aspartic acid (D) Histidine

Last Answer : Answer : B

In small intestine trypsin hydrolyzes peptide linkages containing (A) Arginine (B) Histidine (C) Serine (D) Aspartate

Description : In small intestine trypsin hydrolyzes peptide linkages containing (A) Arginine (B) Histidine (C) Serine (D) Aspartate

Last Answer : Answer : A

α-helix is disrupted by certain amino acids like (A) Proline (B) Arginine (C) Histidine (D) Lysine

Description : α-helix is disrupted by certain amino acids like (A) Proline (B) Arginine (C) Histidine (D) Lysine

Last Answer : Answer : A

Histidine is converted to histamine through the process of (A) Transamination (B) Decarboxylation (C) Oxidative deamination (D) Urea cycle

Description : Histidine is converted to histamine through the process of (A) Transamination (B) Decarboxylation (C) Oxidative deamination (D) Urea cycle

Last Answer : Answer : B

All amino acids have one asymmetric carbon atom, except (A) Arginine (B) Aspargine (C) Histidine (D) Glycine

Description : All amino acids have one asymmetric carbon atom, except (A) Arginine (B) Aspargine (C) Histidine (D) Glycine

Last Answer : Answer : D

The amino acids in which the R groups have a net positive charge at pH 7.0 are (A) Lysine, Arginine, Histidine (B) Lysine, Aspargine (C) Histidine, Aspargine (D) Glutamine, Arginine

Description : The amino acids in which the R groups have a net positive charge at pH 7.0 are (A) Lysine, Arginine, Histidine (B) Lysine, Aspargine (C) Histidine, Aspargine (D) Glutamine, Arginine

Last Answer : Answer : A

The lone pair of electrons at one of the ring nitrogens in the given amino acid makes a potential ligand, which is important in binding the iron atoms in hemoglobin: (A) Tryptophan (B) Threonine (C) Histidine (D) Serine

Description : The lone pair of electrons at one of the ring nitrogens in the given amino acid makes a potential ligand, which is important in binding the iron atoms in hemoglobin: (A) Tryptophan (B) Threonine (C) Histidine (D) Serine

Last Answer : Answer : C

Which one of the amino acids could serve as the best buffer at pH 7? (A) Glutamic acid (B) Arginine (C) Valine (D) Histidine

Description : Which one of the amino acids could serve as the best buffer at pH 7? (A) Glutamic acid (B) Arginine (C) Valine (D) Histidine

Last Answer : Answer : D

The greatest buffering capacity at physiologic pH would be provided by a protein rich in which of the following amino acids ? (A) Lysine (B) Histidine (C) Aspartic acid (D) Valine

Description : The greatest buffering capacity at physiologic pH would be provided by a protein rich in which of the following amino acids ? (A) Lysine (B) Histidine (C) Aspartic acid (D) Valine

Last Answer : Answer : B

An amino acid not involved in urea cycle is (A) Arginine (B) Histidine (C) Ornithine (D) Citrulline

Description : An amino acid not involved in urea cycle is (A) Arginine (B) Histidine (C) Ornithine (D) Citrulline

Last Answer : Answer : B

The amino acid which synthesizes many hormones: (A) Valine (B) Phenyl alanine (C) Alanine (D) Histidine

Description : The amino acid which synthesizes many hormones: (A) Valine (B) Phenyl alanine (C) Alanine (D) Histidine

Last Answer : Answer : B

The basic amino acid: (A) Glycine (B) Leucine (C) Histidine (D) Proline

Description : The basic amino acid: (A) Glycine (B) Leucine (C) Histidine (D) Proline

Last Answer : Answer : C

The neutral amino acid is (A) Lysine (B) Proline (C) Leucine (D) Histidine

Description : The neutral amino acid is (A) Lysine (B) Proline (C) Leucine (D) Histidine

Last Answer : Answer : C

This amino acid cannot have optical isomers: (A) Alanine (B) Histidine (C) Threonine (D) Glycine

Description : This amino acid cannot have optical isomers: (A) Alanine (B) Histidine (C) Threonine (D) Glycine

Last Answer : Answer : D

Seratonin is derived in the body from the following amino acid: (A) Phenylalanine (B) Histidine (C) Tryptophan (D) Serine

Description : Seratonin is derived in the body from the following amino acid: (A) Phenylalanine (B) Histidine (C) Tryptophan (D) Serine

Last Answer : Answer : C

Histidine is converted into histamine by (A) Carboxylation (B) Decarboxylation (C) Methylation (D) Hydroxylation

Description : Histidine is converted into histamine by (A) Carboxylation (B) Decarboxylation (C) Methylation (D) Hydroxylation

Last Answer : Answer : B

Histamine is formed from histidine by (A) Deamination (B) Dehydrogenation (C) Decarboxylation (D) Carboxylation

Description : Histamine is formed from histidine by (A) Deamination (B) Dehydrogenation (C) Decarboxylation (D) Carboxylation

Last Answer : Answer : C

The defective enzyme in histidinemia is (A) Histidine carboxylase (B) Histidine decarboxylase (C) Histidase (D) Histidine oxidase

Description : The defective enzyme in histidinemia is (A) Histidine carboxylase (B) Histidine decarboxylase (C) Histidase (D) Histidine oxidase

Last Answer : Answer : C

An amino acid that does not take part in α helix formation is (A) Histidine (B) Tyrosine (C) Proline (D) Tryptophan

Description : An amino acid that does not take part in α helix formation is (A) Histidine (B) Tyrosine (C) Proline (D) Tryptophan

Last Answer : Answer : C

A vasodilating compound is produced by the decarboxylation of the amino acid: (A) Arginine (B) Aspartic acid (C) Glutamine (D) Histidine

Description : A vasodilating compound is produced by the decarboxylation of the amino acid: (A) Arginine (B) Aspartic acid (C) Glutamine (D) Histidine

Last Answer : Answer : D

An amino acid not found in proteins is (A) β-Alanine (B) Proline (C) Lysine (D) Histidine

Description : An amino acid not found in proteins is (A) β-Alanine (B) Proline (C) Lysine (D) Histidine

Last Answer : Answer : A

What is the speciality of Histidine?

Description : What is the speciality of Histidine? 

Last Answer : The pK value of Histidine is 6.1, and therefore effective as a buffer at the physiological pH of 7.4. The buffering capacity of plasma proteins and hemoglobin is mainly due to histidine residue.

which codon is code for the amino acid histidine?

Description : which codon is code for the amino acid histidine?

Last Answer : It is CAC and CAU.

What condon is the code for the amino acid histidine (His)?

Description : What condon is the code for the amino acid histidine (His)?

Last Answer : Feel Free to Answer

Explain in brief about histamine It is formed by the decarboxylation of amino acid histidine ?

Description : Explain in brief about histamine It is formed by the decarboxylation of amino acid histidine ?

Last Answer : It accounts for 10% of granule weight. This histamine binds to specific receptors on various target cells.