Cited by 629Protease and Inhibitor MechanismsEnzyme Structure and FunctionProtein Structure and Dynamics

[2] Families of serine peptidases

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Rawlings, Neil D., Barrett, Alan J.·1994·Methods in Enzymology

Abstract

Publisher Summary This chapter examines families of serine peptidases. Serine peptidases are found in viruses, bacteria, and eukaryotes. They include exopeptidases, endopeptidases, oligopeptidases, and omega peptidases. On the basis of three-dimensional structures, most of the serine peptidase families can be grouped together into about six clans that may have common ancestors. The structures are known for members of four of the clans, chymotrypsin, subtilisin, carboxypeptidase C, and Escherichia D-Ala-D-Ala peptidase A. The peptidases of chymotrypsin, subtilisin, and carboxypeptidase C clans have a common “catalytic triad” of three amino acids—namely, serine (nucleophile), aspartate (electrophile), and histidine (base). The geometric orientations of these are closely similar between families; however the protein folds are quite different. The arrangements of the catalytic residues in the linear sequences of members of the various families commonly reflect their relationships at the clan level. The members of the chymotrypsin family are almost entirely confined to animals. 10 families are included in chymotrypsin clan (SA), and all the active members of these families are endopeptidases. The order of catalytic residues in the polypeptide chain in clan SA is His/Asp/Ser.

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Crossref · 10.1016/0076-6879(94)44004-2

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Authors
Rawlings, N. D., & Barrett, A. J.
Venue
Methods in Enzymology
Publisher
Elsevier
Published
1994
Volume
244
Pages
19-61
ISSN
0076-6879 (ISSN-L)
OpenAlex
W1550745757
Cited by
629
References
102
Citations by year
2026: 8 · 2025: 13 · 2024: 17 · 2023: 10 · 2022: 19 · 2021: 22 · 2020: 16 · 2019: 19 · 2018: 16 · 2017: 13 · 2016: 18 · 2015: 21 · 2014: 29 · 2013: 24 · 2012: 46
FWCI
15.83
Type
book chapter
Language
en
Open access
Locations
  • Methods in enzymology on CD-ROM/Methods in enzymology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Protease and Inhibitor Mechanisms
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
Keywords
serine protease, catalytic triad, protein structure, protein evolution, exopeptidases, endopeptidase, oligopeptidase
MeSH terms
Amino Acid Sequence, Carboxypeptidases, Chymotrypsin, Molecular Sequence Data, Serine Endopeptidases, Subtilisins

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