Forms and functions of human SDR enzymes

Area of Science:

• Biochemistry and Molecular Biology
• Enzymology
• Human Genetics

Background:

• Short-chain dehydrogenases/reductases (SDR) represent a large, functionally diverse enzyme superfamily.
• Over 1600 SDR members are currently annotated across all life forms.
• Distinct sequence motifs define the SDR family, enabling identification of its members.

Purpose of the Study:

• To identify and characterize all human members of the SDR enzyme family.
• To classify the identified human SDRs based on their known or predicted functions.
• To explore the potential links between human SDRs and various diseases.

Main Methods:

• Utilized conserved SDR sequence motifs as search queries in biological databases.
• Retrieved and analyzed sequences to identify distinct human SDR family members.
• Categorized identified SDRs into functional groups: intermediary metabolism, lipid metabolism, and unknown function (ORFs).

Main Results:

• Identified 37 distinct human members belonging to the SDR enzyme superfamily.
• Classified these human SDRs into at least three major functional categories.
• Highlighted the relevance of SDRs in intermediary metabolism, lipid mediator metabolism, and as ORFs with undetermined roles.

Conclusions:

• The human genome contains a significant number of SDR enzymes with diverse biological roles.
• Understanding the functional landscape of human SDRs is crucial for comprehending their involvement in health and disease.
• This overview provides a foundational understanding of human SDRs in the context of the human genome project and disease association.