SUPERFAMILY 1.75 HMM library and genome assignments server


Subunit VIII of photosystem I reaction centre, PsaI superfamily

SCOP classification
Root:   SCOP hierarchy in SUPERFAMILY [ 0] (11)
Class:   Membrane and cell surface proteins and peptides [ 56835] (58)
Fold:   Single transmembrane helix [ 81407] (38)
Superfamily:   Subunit VIII of photosystem I reaction centre, PsaI [ 81540]
Families:   Subunit VIII of photosystem I reaction centre, PsaI [ 81539]


Superfamily statistics
Genomes (85) Uniprot 2013_05 PDB chains (SCOP 1.75)
Domains 95 808 1
Proteins 95 808 1


Functional annotation
General category Metabolism
Detailed category Photosynthesis

Document:
Function annotation of SCOP domain superfamilies

UniProtKB KeyWords (KW)

(show details)
KW termFDR (all)SDKW levelAnnotation (direct or inherited)
Biological processPhotosynthesis0InformativeDirect
Cellular componentMembrane0Least InformativeDirect
Cellular componentPlastid0Moderately InformativeDirect
Cellular componentThylakoid0InformativeDirect
Cellular componentPhotosystem I0Highly InformativeDirect
DomainTransmembrane0Least InformativeDirect

Document: KW annotation of SCOP domains

InterPro annotation
Cross references IPR001302 SSF81540 Protein matches
Abstract PsaI has a crucial role in aiding normal structural organization of PsaL within the photosystem I complex and the absence of PsaI alters PsaL organization, leading to a small, but physiologically significant, defect in photosystem I function [PubMed7608190]. PsaL encodes a subunit of photosystem I and is necessary for trimerization of photosystem I. PsaL may constitute the trimer-forming domain in the structure of photosystem I [PubMed8262256].

InterPro database


PDBeMotif information about ligands, sequence and structure motifs
Cross references PDB entries
Ligand binding statistics
Nucleic-acid binding statistics
Occurrence of secondary structure elements
Occurrence of small 3D structural motifs

PDBeMotif resource

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Internal database links

Browse genome assignments for this superfamily. The SUPERFAMILY hidden Markov model library has been used to carry out SCOP domain assignments to all genomes at the superfamily level.


Alignments of sequences to 1 models in this superfamily are available by clicking on the 'Alignments' icon above. PDB sequences less than 40% identical are shown by default, but any other sequence(s) may be aligned. Select PDB sequences, genome sequences, or paste in or upload your own sequences.


Browse and view proteins in genomes which have different domain combinations including a Subunit VIII of photosystem I reaction centre, PsaI domain.


Examine the distribution of domain superfamilies, or families, across the major taxonomic kingdoms or genomes within a kingdom. This gives an immediate impression of how superfamilies, or families, are restricted to certain kingdoms of life.


Explore domain occurrence network where nodes represent genomes and edges are domain architectures (shared between genomes) containing the superfamily of interest.

There are 1 hidden Markov models representing the Subunit VIII of photosystem I reaction centre, PsaI superfamily. Information on how the models are built, and plots showing hydrophobicity, match emmission probabilities and insertion/deletion probabilities can be inspected.


Jump to [ Top of page · SCOP classification · InterPro annotation · PDBeMotif links · Functional annotation · UniProtKB KeyWords (KW) · Internal database links ]