Vitamin B7 & Deficiency
VITAMIN B7 (BIOTIN)
- Also called as anti-egg white injury factor or Vitamin H.
- Synthesized by intestinal flora.
- Reactive form is CarboxyBiocytin.
- Biotin serves prosthetic group for carboxylation reaction.
- Biotin acts as a coenzyme-
- Acetyl CoA Carboxylase
- Propionyl CoA carboxylase
- Pyruvate carboxylase
- Biotin antagonist- Avidin (raw white egg), Streptavidin
Biotin Deficiency-
- Depression, Hallucination
- Anorexia
- Seborrheic and erythematous rash near nose, eyes, mouth.
- Alopecia

Exam Important
- Also called as anti-egg white injury factor or Vitamin H.
- Synthesized by intestinal flora.
- Reactive form is CarboxyBiocytin.
- Biotin serves prosthetic group for carboxylation reaction.
- Biotin antagonist- Avidin(raw white egg), Streptavidin
- Biotin acts as a coenzyme
a) Acetyl CoA Carboxylase
b) Propionyl CoA carboxylase
c) Pyruvate carboxylase
Biotin Deficiency-
- Depression, Hallucination
- Anorexia
- Seborrheic and erythematous rash near nose, eyes, mouth.
- Alopecia
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