S100 Family: 3.40.50.1980.1.1.1.1

Representative domain: 1m1nA02

Classification Lineage (3.40.50.1980.1.1.1.1)

CATH Code	Level Description	Links
3	Alpha Beta
3.40	3-Layer(aba) Sandwich
3.40.50	Rossmann fold
3.40.50.1980	Nitrogenase molybdenum iron protein domain	Gene3D
3.40.50.1980.1
3.40.50.1980.1.1
3.40.50.1980.1.1.1
3.40.50.1980.1.1.1.1

Summary of Non-Redundant Representatives


-	-	-	-	-	-	-	-	33

Non-Redundant Representatives (33)
Functional Families
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What is a Non-Redundant Representative?

CATH is a tree-like organisation of nodes that begins with the class node (i.e. the first branch-point of the tree) and ends with the domain nodes (i.e. the leaves of the tree). Each node below the class have a parent that they belong to, e.g. the parent of the H level (Homologous superfamily) is the T (Topology). Additionally, each node above the domains have child nodes that belong to them, e.g. the child nodes of a given H (Homologous superfamily) level are the S35 families (domains clustered at > 35% sequence identity).

S100 Count Entries in S100 Family 3.40.50.1980.1.1.1.1 (33)

CATH code	Domain ID	Keywords
3.40.50.1980.1.1.1.1.1	1m1nA02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.2	1m1nC02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.3	1m1nE02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.4	1m1nG02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.5	2minA02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.6	2minC02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.7	3minA02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.8	3minC02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.9	2afhA02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.10	2afhC02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.11	1g20A02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.12	1g20C02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.13	1m34A02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.14	1m34C02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.15	1m34I02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.16	1m34K02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.17	2afkA02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.18	2afkC02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.19	1l5hA01	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.20	1g21A02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.21	1g21C02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.22	1n2cA02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.23	1n2cC02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.24	2afiA02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.25	2afiC02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.26	2afiI02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.27	2afiK02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.28	1m1yA02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.29	1m1yC02	Azotobacter vinelandii, Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase.
3.40.50.1980.1.1.1.1.30	1m1yI02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.31	1m1yK02	Nitrogenase molybdenum-iron protein alpha chain, Nitrogenase., Azotobacter vinelandii
3.40.50.1980.1.1.1.1.32	1minA02
3.40.50.1980.1.1.1.1.33	1minC02

The information on Functional Families (FunFams) is currently being updated and will be released by the end of March 2012. The pages will include the following features:

Multiple alignments for each functional family
Representative structure for each functional with known catalytic and interface residues highlighted, along with conserved residues predicted by scorecons
Detailed functional information on diversity and conservation within Functional families
Multi-domain architectures

In the meantime, please find a summary of information on the FunFams and protein networks within this superfamily on the Gene3D pages:

http://gene3d.biochem.ucl.ac.uk/superfamily/?accession=3.40.50.1980.1.1.1.1

What is a Non-Redundant Representative?

Why can't I have a multiple structural alignment of the whole superfamily?

The simple answer is that some of the larger superfamilies in CATH comprise relatives which are very structurally diverse, having different secondary structure embellishments. Attempting to provide a global alignment of all domains in the superfamily would result in poor quality alignments. As a result, structural alignments in CATH are generated by first clustering together the structures that have at least some recognisable structural similarity using a normalised RMSD score (SIMAX = RMSDxNumber of residues in the largest domain/number of aligned residues) less than a given cutoff.

What is an Close Structural Cluster?

A Close Structural Cluster describes a cluster of two or more CATH domains that have been grouped together due to their close structural similarity (SIMAX score < 5Å where SIMAX = RMSD x Number of residues in the larger domain/number of aligned residues).

What is a Distant Structural Cluster?

A Distant Structural Cluster describes a cluster of two or CATH domains that have been grouped together with a more relaxed structural similarity threshold to investigate more distant evolutionary similarities (SIMAX score < 5Å where SIMAX = RMSD x Number of residues in the larger domain/number of aligned residues).

What is a Structural Neighbour?

The term "structural neighbour" is used here to describe two CATH domains that share a degree of structural similarity. The SSAP algorithm is used to calculate this similarity and works by generating a structure-based pairwise alignment of the two domains then scoring this alignment using a RMSD score which has been normalised by the length of the larger domain divided by the number of aligned residues (SIMAX).

S100 Family: 3.40.50.1980.1.1.1.1

Classification Lineage (3.40.50.1980.1.1.1.1)

Summary of Non-Redundant Representatives

What is a Non-Redundant Representative?

S100 Count Entries in S100 Family 3.40.50.1980.1.1.1.1 (33)

What is a Non-Redundant Representative?

Why can't I have a multiple structural alignment of the whole superfamily?

What is an Close Structural Cluster?

What is a Distant Structural Cluster?

What is a Structural Neighbour?

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