NCBI Accession #
NP_173858.5
NCBI GenBank Nucleotide #
NM_102294.6
NCBI Official Full Name
protein ALBINA 4
NCBI Official Symbol
ALB4
NCBI Official Synonym Symbols
ALBINA 4; ARABIDOPSIS THALIANA ENVELOPE MEMBRANE INTEGRASE; ARTEMIS; F21J9.16
NCBI Protein Information
protein ALBINA 4
NCBI Summary
Homologue of the Alb3/Oxa1/YidC family. ALB4 is almost identical to the Alb3/Oxa1/YidC domain of the previously described 110 kDa inner envelope protein ARTEMIS. However, ALB4 is expressed as a separate 55 kDa protein and is located in the thylakoid membrane of chloroplasts. Analysis of a T-DNA insertion line with a reduced level of Alb4 revealed chloroplasts with an altered ultrastructure. Mutant plastids are larger, more spherical in appearance and the grana stacks within the mutant lines are less appressed than in the wild-type chloroplasts. ALB4 is required for proper chloroplast biogenesis.
UniProt Synonym Gene Names
ALB; ALB4; ART1; Ath4
UniProt Protein Name
ALBINO3-like protein 1, chloroplastic
UniProt Synonym Protein Names
Arabidopsis thaliana envelope membrane integrase; Protein ALBINA 4; Ath4; Protein ARTEMIS
UniProt Entry Name
ALB31_ARATH
UniProt Primary Accession #
Q9FYL3
UniProt Secondary Accession #
Q1RPP7; Q9FYL4
UniProt Related Accession #
Q9FYL3
UniProt Comments
Probably required for the insertion of integral membrane proteins into the chloroplast thylakoid membranes.