Sigma factors are initiation factors that promote the attachment of plastid-encoded RNA polymerase (PEP) to specific initiation sites and are then released. Regulates transcription in chloroplast in a DG1-dependent manner. Involved in light-dependent chloroplast development. Required during early plant development and primary leaf formation.

Belongs to the sigma-70 factor family.

547 amino acids

MEATRNLVSSSPSFQTKTHLKSSYSSPSSVVMLHDQTTTPVVNSRHLNSLSRHFPASVLSQEPREESRPLSHALRDDRTSQLTLERRQFDELVSSREDEKFEQQLLHSTGLWNLLISPLTSETKLPAVVSPLADAELCDVVALAQKALSASKQAALLVDDTEANPSDNIKDSLSTSSSMSLPEKGNIVRSKRQLERRAKNRRAPKSNDVDDEGYVPQKTSAKKKYKQGADNDDALQLFLWGPETKQLLTAKEEAELISHIQHLLKLEKVKTKLESQNGCEPTIGEWAEAMGISSPVLKSDIHRGRSSREKLITANLRLVVHIAKQYQNRGLNFQDLLQEGSMGLMKSVEKFKPQSGCRFATYAYWWIRQSIRKSIFQNSRTIRLPENVYMLLGKVSEARKTCVQEGNYRPSKEELAGHVGVSTEKLDKLLYNTRTPLSMQQPIWSDQDTTFQEITPDSGIETPTMSVGKQLMRNHVRNLLNVLSPKERRIIKLRFGIDGGKQRSLSEIGEIYGLSKERVRQLESRALYRLKQNMNSHGLHAYADLLV

61.8 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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