Cyclin-I (CCNI)
Necessary for triggering cell division.

Human (Homo sapiens)
Chimpanzee (Pan troglodytes)				
Rhesus Monkey (Macaca mulatta)
Cow (Bos taurus)
Mouse (Mus musculus)
Chicken (Gallus gallus)
Western clawed frog (Xenopus tropicalis)
Zebrafish (Danio rerio)

>Human
MKFPGPLENQRLSFLLEKAITREAQMWKVNVRKMPSNQNVSPSQRDEVIQWLAKLKYQFNLYPETFALAS
SLLDRFLATVKAHPKYLSCIAISCFFLAAKTVEEDERIPVLKVLARDSFCGCSSSEILRMERIILDKLNW
DLHTATPLDFLHIFHAIAVSTRPQLLFSLPKLSPSQHLAVLTKQLLHCMACNQLLQFRGSMLALAMVSLE
MEKLIPDWLSLTIELLQKAQMDSSQLIHCRELVAHHLSTLQSSLPLNSVYVYRPLKHTLVTCDKGVFRLH
PSSVPGPDFSKDNSKPEVPVRGTAAFYHHLPAASGCKQTSTKRKVEEMEVDDFYDGIKRLYNEDNVSENV
GSVCGTDLSRQEGHASPCPPLQPVSVM

>Chimpanzee
MKFPGPLENQRLSFLLEKAITREAQMWKVNVRKMPSNQNVSPSQRDEVIQWLAKLKYQFNLYPETFALAS
SLLDRFLATVKAHPKYLSCIAISCFFLAAKTVEEDERIPVLKVLARDSFCGCSSSEILRMERIILDKLNW
DLHTATPLDFLHIFHAIAVSTRPQLLFSLPKLSPSQHLAALTKQLLHCMACNQLLQFRGSMLALAMVSLE
MEKLIPDWLSLTIELLQKAQMDSSQLIHCRELVAHHLSTLQSSLPLNSIYVYRPLKHTLVTCDKGVFRLH
PSSVPGPDFSKDNSKPEVPVRGTAAFYHHLPAASGCKQTSTKRKVEEMEVDDFYDGIKRLYNEDNVSENV
GSVCGTDLSRQEGHASPCPPLQPVSVM

>Rhesus_monkey
MKFPGPLENQRLSFLLEKAITREAQMWKVNVRKMPSNQNVSPSQRDEVIQWLAKLKYQFNLYPETFALAS
SLLDRFLATVKAHPKYLSCIAISCFFLAAKTVEEDERIPVLKVLARDSFCGCSSSEILRMERIILDKLNW
DLHTATPLDFLHIFHAIAVSTRPQLLFSLPKLSPSQHLAVLTKQLLHCMACNQLLQFRGSMLALAMVSLE
MEKLIPNWLSLTIELLQKAQMDSSQLIHCRELVAHHLSTLQSSLPLNSVYVYRPLKHTLVTCDKGVFRLH
PSSVPGPDFSKDNSKPEVPVRGTAAFYHHLPAASGCKQTSAKRKVEEMEVDDFYDGIKRLYNEDNVSENV
GSVCGTDLSRQEGHASPCPPLQPVSVM

>Cow
MKFPGPLENQRLSFLLEKAISREAQMWKVNVPKIPTNQNVSPSQRDEVIQWLAKLKYQFNLYPETFALAS
SLLDRFLATVKAHPKYLSCIAISCFFLAAKTVEEDERIPVLKVLARDSFCGCSSSEILRMERIILDKLNW
DLHTATPLDFLHIFHAIAVSTRPQLLFSLPSLSPSQHLAFLTKQLLHCMACSQLLQFKGSMLALAMVSLE
MEKLIPDWLPLTIELLQKAQMDSSQLIHCRELVAHHLSTLQSSLPLNSVYVYRPLKHTLVTCDRGVFRLH
PSSVPGPDFSKDNSKPEVPVRGPAAFCHHLPAANGCKYASAKRKVEEMEVDDFYDGIKRLYNEDNASESV
GSVCGTDLSRQEGQASPCPPLQPVSVM

>Mouse
MKFPGPLENQRLSSLLERAISREAQMWKVNVPKIPTNQNVSPSQRDEVIQWLAKLKYQFNLYPETFALAS
SLLDRFLATVKAHPKYLNCIAISCFFLAAKTVEEDEKIPVLKVLARDSFCGCSSSEILRMERIILDKLNW
DLHTATPLDFLHIFHAIAVSARPQLLFSLPKLSPSQHLAVLTKQLLHCMACNQLLQFKGSMLALAMVSLE
MEKLIPDWLPLTIELLQKAQMDSSQLIHCRELVAYHLSALQSALPLNSVYVYRPLKHTLVTCDKGAFKLH
PSSVSGPDFSKDNSKPEVPVRGPAAFHLHLPAASGCKQTSAKRKVEEMEVDDFYDGIKRLYNEDNGPENV
GSVCGTDLSRQEGHASPCPPLQPVSVM

>Chicken
MKFSGPVESQRLSLLLEMAISREAQMWKAHVPKIQPNQDVAISPKQRDEVIQWLAKLKYQFHLYPETLAL
AISLLDRFLAVVKARPKYLNCIAISCFFLAAKTIEEDERIPVLKVLARDSFCGCSPAEIRRMEKIILDKL
NWDLHMATPLDFLHIFHAVAVSNRPQLLSILPKLSPSQHVAALTKQLLHCMACYQLLQFKGSMLALAIVS
LELEKLLPDWLALIIELLQKAQMDSAQLIHCRELVAHHLSTLQSSLLPNPVYVYSPLQHTLVTCNRGAFK
CQPSSVPGPGFSKDNGRPEVPVTATAALYQRLPAPSGCKQASAKRKVEEMEVDDFYDGIKRLYNEDAAPE
VVALENMGSVCGADVSRQEGNVSPCPPLQPVSVM

>Frog
MKFSGPLESQRLYFLLERAVSREAQIWKVYAQKTQINQDVGISPEQRDEVILWLAELKYQFRVYPETHAL
AISILDRFLAAVKARPKYLRCIAISCFFLAAKTIEEDERIPVLRVLTQGSSCGCSPAEVLRMERIILDKL
NWDLHTATPLDFLHIFHAMTLNASPELFDRIPELNPSQHVALLTRQLLQCMAFHQLLQFKGSMLALALLS
LEMEKLLPDWLAVTIKLLQLAQMDSAQLFYCREVAAHHLSLLQPPLPPNAVYIYSPLKRTLVSYNRGAYI
HPSTVKEPGFHPQGNCISGALIKGASVLYQSLAAPAVCKQASTKRKVEQMEVDDFYDGIKRLYNEDSSAD
VVGMEIVACSSGLSRSEGSLSPCPQLQAVSVM

>Zebrafish
MKFTKPLESRKLSSLLEKAVSREAKLWKVYVPKKPTNQDTDISPEKRDEAVRWLRDVHSQLKLYPETLCL
AIGILDRFLSTIKARPKYLRCIAISCFFLAAKTSEEDERIPSLRELASSSKCGCSPSEILRMERIVLDKL
NWDLHSATALDFLYIFHAMVLSCKSGRLSAALSGLNPSHHVALLTQQLFHCLAHNALLQVRGSLLSLGLI
TLELEKLCPDWLALTVDLLHRLQIDSSQLICCRELVARCLSTHTASLPPNTVYICRPLPEPRDEGVLHVS
LAPTAPSDPNSTHSRSAKRKVEQMEVDEYYDGIKRLYNEENPQEGALLCTAQTAGGGQPNAGSSPCPPLQ
PVRET