the immunohistochemical study revealed that s100-alpha is mainly localized in slow-twitch muscle fibers , whereas the beta subunit of s100 protein ( s100-beta ) was not detected in both types of muscle fibers , an observation indicating that the predominant form of s100 protein in the slow-twitch muscle fiber is not s100a or s100b , but s100a0 .
C3658228
beta subunit
C0027758
s100 protein